UI CD 1:6) - World Radio History

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Talk about CONVENIENCE!

ANNOUNCING THE TELEBINDER

In response to your many requests, there is now available

the new TELEBINDER, designed especially for use with

Wallace's TELAIDES. Ruggedly constructed, the binder

has metal rings which open or close instantly for the ad-dition or removal of material. Pages lie flat when the

TELEBINDER is opened. The TELAIDES you now own

are punched to fit exactly the rings of this new binder.

THE TELEBINDER IS CONSTRUCTED SO AS TO HAVE A LONG AND USEFUL LIFE.

Cover material is extremely tough, flexible and attractive-ly stamped.

No tugging at the rings, or jammed fingers --separate

levers at opposite ends of the binder spine instantly open

or close the twenty-two steel rings.

Binder and cover are brass riveted.

USE TELEBINDERS FOR:

Combining TELAIDES for several manufacturers into a

single traveling service reference book!

Combining 1956 and other added information for a single

manufacturer, with the initial TELAIDE covering early

chassis, into one convenient unit!

Collating information in any other manner to fit your in-

dividual needs.

now ready! EMERSON

MOTOROLA

ADMIRAL

ZENITH

SYLVANIA

PHILCO

CROSLEY

RAYTHEON

WESTINGHOUSE

GENERAL ELECTRIC

R.C.A. VICTOR

EACH

Is your TELAIDE library

up-to-date?

COMBINATION No. 1:

Stromberg-Carlson, Kaye-Halbert, Starrett

COMBINATION No. 2:

Arvin, Tray-ler, Philmore

COMBINATION No. 3: (1954 Models)

Admiral, Motorola, Westinghouse

Sylvania, Arvin, Trav-ler

COMBINATION No. 4: (1954 Models)

Philco, Emerson, Zenith, Crosley

Raytheon, Stromberg-Carlson

COMBINATION No. 5:

Late 1954 and Early 1955 Models

for all above manufacturers.

BENDIX (1946-19554

CAPEHART (1947-1955)

SENTINEL (1947-1955)

WESTINGHOUSE

lTELAIDE

WALLACE'S TELAIDES INCORPORATED, 136 DAY STREET, JAMAICA PLAIN 30, MASSACHUSETTS

MODEL INDEX

Models Pages Models Pages Models Pages Models Pages Models Pages Models Pages

800A 2, 3 12C107 42-45 17C108 56, 57 2012 68, 69 21C351 86, 87 COLOR:

800B 2, 3 12C108 42-45 17C109 56, 57 21C103 82, 83 2111 74, 75 15CL100 90-99

800C 4, 5 12C109 42-45 17C110 58, 59 21C104 82, 83 2112 72, 73

800D 4, 5 12K1 46, 47 17C111 58, 59 21C105 82, 83 2113 74, 75

801 6, 7 1211 40, 41 17C112 56, 57 21C114 8C., 81 211-4 70, 71

802 8, 9 1213 42-45 17C113 60, 61 21C115 80, 81 2115 70, 71

803 10, 11 1214 42-45 17C114 56, 57 21C116 80, 81 2116 74, 75

805 12-15 1217 44, 45 17C115 60, 61 21C117 80, 81 2117 76, 77 RADIOS:

806 12-15 14C101 48, 49 17C117 60, 61 21C119 80, 81 2118 76, 77 818 101, 2, 3

807 12-15 14C102 48, 49 17C120 60, 61 21C120 80, 81 21110 80, 81 820 101, 2, 3

809 12-15 1412 48, 49 17C125 74, 75 21C121 80, 81 21111 80, 81 840 101, 2, 3

810 16, 17 1413 48, 49 17C127 80, 81 21C200 68, 69 21112 80, 81 12K1 101, 2, 3

811 16, 17 16C103 52, 53 1711 56, 57 21C201 74, 75 21114 80, 81 16K1 101, 2, 3

814 18, 19 16C104 52, 53 1712 56, 57 21C202 74, 75 21115 80, 81

815 20, 21 16C110 50, 51 1713 56, 57 21C204 74, 75 21117 88, 89

817 22-25 16C111 50, 51 1714 56, 57 21C206 74, 75 21118 88, 89 UHF:

818 26, 27 16C113 52, 53 1715 56, 57 21C208 74, 75 21119 80, 81

UHF-70 104 820 28, 29 16C115 50, 51 1716 56, 57 21C210 74, 75 21120 78, 79

UHF-80 104 821 22-25 16C116 52, 53 1717 60, 61 21C214 74, 75 21121 78, 79

UHF-90 104 830 30, 31 16K1 54, 55 17110 72, 73 21C225 78, 79 21122 82, 83

UHF-101 104 835 32, 33 16K2 54, 55 17111 72, 73 21C226 78, 79 21123 82, 83

840 34, 35 1611 50, 51 17112 72, 73 21C227 78, 79 21124 82, 83 UHF-103 104

RUX-001 82 901 36, 37 1612 50, 51 17114 88, 89 21C228 78, 79 21125 82, 83

910 36, 37 1613 52, 53 17115 80, 81 21C229 78, 79 21126 84, 85 RUX-003 105

RUX-006 105 10C101 38, 39 1614 52, 53 17116 88, 89 21C230 78, 79 21127 84, 85

RUX-007 105 10C102 38, 39 1615 52, 53 17117 80, 81 21C231 78, 79 21130 86, 87

1011 38, 39 1616 52, 53 17120 82, 83 21C232 78, 79 21131 86, 87

10T4 38, 39 17C101 52, 53 19C101 62, 63 21C233 78, 79 24C101 66, 67

1015 38, 39 17C10. 52, 53 20C105 68, 69 21C240 84, 85

1016 38, 39 17C103 56, 57 20C106 68, 69 21C241 84, 85 PRODUCTION

12C101 40, 41 17C104 56, 57 20C107 74, 75 21C348 86, 87 CHANGES 106-111

12C102 40, 41 17C105 56, 57 20C150 64, 65 21C349 86, 87

12C105 40, 41 17C107 56, 57 20C151 64, 65 21C350 86, 87

ELECTROLYTIC CONDENSERS

REF. NO. DESCRIPTION PART NO.

C268

C277

C278

C297

C354

C358

C346

C37I

C372

C373

C374

C299

C325

C327

C3I9

C2I3

40 mf, 300V

10 mf, 150V

150 mf, I5V

100 rnf, 50V

50 mf, 100V

10 mf, 350V

I rnf, 50V 150 nit, 150V

150 mf, 150V.

150 nit, 150V.

150 inf. 150V.

30 mf, 450V

SPECIAL

47 mf, 800V. , mica Hi voltage, 500 rnmf

20,000 V.

TRIMMERS 45-380 mrof. , horiz.

drive trimmer cap.

1.25-1.95 rnmf.,

500V., trimmer

capacitor.

RCE-088

RCE-088

RCE-088

RCE-089

RCE-089

RCE-089

RCE -090

ACE -091

RCE-091

RCE-091 RCE-091

RCE-092

RCN-021 RCN-023

RCY-051

RCY-053

CONTROLS

DESCRIPTION REF. NO. PART NO.

Volume 500K

Volume 500K

Brightness 500K

Brightness 500K

Contrast 500K

Contrast 500K

or. Hold 100K

or. Hold 100K

Vert. Hold 100K

Vert. Hold 100K

Vert. Size 2 meg

Vert. lin. 2K, 2W

ovals 100K ocu• 100K

On-off

On-off WIREWOUND gi SPECIAL

R347

E347,

R261A

R26IA

R26IB

R261B

E321

R321

R298

R298

R302

E300

2.353

2.353

S371

S37I

RRC-099 •

EEC- 104 •• EEC-097 •

RRC-102 ••

EEC-097 •

EEC-100 ••

EEC-098 *

RRC-103 ••

EEC-098 •

EEC- 103 ••

EEC-096

RRC-095

EEC-099 •

EEC-104 ••

EEC-099 •

EEC-104 ••

42. 5K, temp. comp.

Globar, 75 ohms 5 ohms, I/2W (used with

original thermal cutout)

4.6 ohms, 5W(use w/RSR-

002 only)

800A ••800B

R328

2.373,4 E371

E371

ERN-007

RRW-041

RRW-043

RAW -048

COILS

REF. NO DESCRIPTION PART NO.

201

L202,5

L204

1248

1255,6,8

1257

L3I1

L312

L3I6

L34I

L342

L343 L372, 3

L376

Input RF a. Osc. choke 8.2 oh,

RF choke

IF Vid, comp. ch. 165 mic

Vid. comp. choke

Hor. Size

Hoe. lin.

Hor. flywheel

1st audio IF

Focus, clamp type E'ocu•, swivel type

4, 5, 249

RF choke-2.0 oh. Filter reactor-used v.,/

PM speaker

ELF-023

ELI-032

ELF-024 ELF-027 RLI-038

ELI-068

RLD-011

RLD-012

RLD-014

ALI-069

ELF -025

ELF -026

13.L1-063

RTL-096

TRANSFORMERS

DESCRIPTION REF NO. PART NO.

Audio Output

Audio Output

Hor. output (•weepo

Ratio detector

Vertical sweep

Yoke (used w/c lamp

type focus coil a say)

Yoke (used w/swivel type focus coil any)

T342

T342

T3I 1

T34I

TZ91

RT0-062

EEC-066

RT0-076 ai

RTD-008

RT0-064

RLD-010

RLD-013

(•pkr. mounted)

(chassis " )

RKT-010

MISCELLANEOUS

EF. NO. DESCRIPTION PART NO.

371, 2Selenium rectifier-6 pl.

(see RER -007)

Head-rod 180001

RER -004

R-IX-02.7

2

VI 6AU6 1st RF Amplifier

V2 6AU6 2nd RF Amplifier

V3 12AT7 Converter - Oscillator

MISCELLANEOUS


X37I Selenium rectifier - 5p1.

limited mounting space adjacent to spkr 0.-SI

RER -007

Spkr, 4" Ion trap replaces earlier

double magnet type

RET -00 3

Head end (800A) RJX-028

Broadcast filter ass'y RLX-027

LSI Speaker -4" electro-

dynamic

ROP-019

13371 Thermal cut out-power

line circuit breaker

ESE-002

S341 Focus switch RSW-066

1,..52 Speaker-4" PM 402C3

lutportont Neu: It is impudent, tke acne, el units, tkot tie proper s•ri•s

resistets R371 is used With otigtnal cut-out, us• RiNT(1143, 5 ohms, 411.,

Se« units, Ft 58.002, require tke seti•s resestenc• 8371, to be RM-044, 4.6 sky... Thereto, when original thermal tut•evt units ere being rut:decent by

RSR•002, the original S elm. series resist. R371 must else be replaced by

RRW-048

V4 6AU6 1st IF Amplifier

V8 12AU7 Video Amplifier V5 6AU6 2nd IF Amplifier

V6 6AU6 3rd IF Amplifier

V7 6AL5 Video Detector - DC Restorer and Clipper

V10 12SN7GT Vert. Multivibrator & Sweep Output

V11 12SN7GT Phase Inverter-Clipper

V12 12SN7GT Hor. AFC & Sweep Gen.

V13 19BG6-G Hor. Sweep Output

V14 IB3GT/8016 H. V. Rectifier

VI5 25Z6GT Hor. Sweep Damper (Model 800 A & B)

V16 6AU6 Audio IF Amp. & Limiter

V17 6AL5 Ratio Detector

V18 6SQ7 1st Audio Amplifier

TEST CONDITIONS

Volume Min.

FOG1173 - Normal

H. Hold - Normal

V. Hold Normal

Brightness Min.

Contrast Max.

Meters:

AC 1000 ohm/volt.

DC 20,000 ohm/volt.

Line volts - 117V. All voltage DC unless otherwise noted.

* Use scale 50V or higher.

t Voltages on Models 800A & B only.

*8 Min. - Max. of Focus Control. e AC voltage reading.

V19 25L6GT Audio Output

1

("vii

¡RATIO DV T 341

81.5

341

SECONDARY TOP

PRIMARY

BOT TOM

1ST AUDIO

I F COIL

iud.m

L244 -(6.9)

L243-®

C297

C3580 C354 e

V12

I2SN7yG

VII

12SN7CTi

VIO

123/4707

.5299 ® -1242

- X 371

BOTTOM VIEW

•

V13

19866

VIS

25 Z6

V14

11336143016

c2 97

TOP VIEW

C35111c

C354 6

-'

X 372

sAu•

4907

6408

681.9

"Ó 1

IZAS?

R204

112 L..2L224 L225 ,6

13 70

2

1227 .228

• 3 64 65 6 7 48 •9 SaRI 40513

boo C222 $0201 310 203

O19 R216

3346EG •HTENKA éreUT 300 01885

R 0 3

1.232

223

.00 ,so 26 INCL

C20

32016

1234 1235 _err

1233

1 8203 K2o€ *--rvvvs-wv-,

51K 51K

117v

60-

geo

1237

4 5 60817 8 9 43 66K

520.8 6AU6 V2 2NoR F

L 204

et'l_2 38

11

VI 6AU6 Isi RF

7

C207 5.0 R207 .00

C204 5000

R202 270

C22I 87

--- 1 V 3t• I V4 CONV I 1ST IF

'.. I2AT 7 6AU6 1

1(-• 8215 I30

>205

R208 8 220K

1209 L2KT 1211 1.212 12,3 .rd er

1214 L215

Ser,

13203 c2I0 K

C- 2I5

2 3 • 5 6 7 e 9 0 II 1213

10

108 C 22 CONTROL

320IC TUNING 82

•

- --71- 017 6704if. S- 2 L7

301r 4

8371

THERMAL

CUT OUT 0371

#371

II S 37. POWER

2372

V38 OSC '/2 I2AT 7

MEAD END CAASS6

C2201

1001

eL2ce_i -

C216 5050 ; I

R209 I 27K I

470

R243 100K

CONTRAST CONTROL

1

1

1

2

R2618 500K

C208

I 55090618FMAIN 1046515

51376 USE0 WITH LS2 PM SPKR IN WHICH CASE HUM BUCK COIL IS OMITTED

+ 27311

0 1371 CR 1 376

+ G37I

C372

1$061F

SPKR FIELD"

00 11 y,- 508F

R312

.2653

.150 v

1000

; 7, 4 012*5513 470K MAS

137'4141 01.00 VERT ST

CUTPUT SWOOP VIDLF 251667 451117GT 64/16

R371

210 381) VID VTO 1ST 2143 OSC V1OU MOLE CET AMR. Re RF CONN( 6406 6406 6415 P2AU7 6ALI6 6.4U6 12477 • 1 9 • 5 4 4 3

75 cry 1Me. 1172 1373 C379 C C387 C38 C377

3000 Ve 5001- 1 Or .0, 500(504 500

065

R374 ez.GT 19006 125N7GT 2 7 2 7 7 8

12917GT 6426 6415 1.374 6507

/5 DAMPER Nort NCR SON 09 /1/0 ALM 1ST OUTPUT C6G Ame DE 7 •uo

C245

100

R244 470

C246

5000 8254

4 5 7.7

V5 2No 1F 6AU6

47

r C342 39

V6 3No IF 6AU6

0249

00

,t.L243 c.ORA

R251 • 70

C248 5000

22K

C279 5000

C254

00

1248 76 UN

C253 5000

0253 1000

V7A CET

1,2 6AL5

24

17 E ,4(.• ...5/1249

2•••-i On 21.84

#265 seo

ce66

5- 1236 ,cd '6SUH D

V8A 1ST VIDEO y212AU7

1255 2

.65 UN

C2e1

84

020 oa

V8B 2 TKoVIDEO lo I2AU7

• 11 C273 0214F

R275

3 .." 3300 , ,Te MEG

C277 y

88 Csay =

•

R39K

5000

265 v

.10 C 302 0234

800A, 8008 V 7B V 9

DC RESTORER &CLIPPER PICTURE TUBE 6AL5 10BP4

J K., 1257

2652H O RED

266 C27.

10K 05 P26 7 4700

26 III

R278

MEG

VERT SWEEP VIOA GENERATOR 1/2 12SN7GT

17301 R291 #292 C293 -4/...V6V36464.46.3.3.34-4.46mv•-1

10K 22% 39« 150

_C300 _C291 .S.292 R294

1002 1002110auf eoK MF

4

R295 c296

Ke. um('

R297 390

1.23

298

VIIA VII8 12SN7GT DATM FOL

V212SN7GT

R336 3,3K 839

470K

8312 22K

81.

135 13,7

*-11-4-1 820 2000

R314 68K

C 516 I-4 220

VERT HOLD

V12A Vl2B I2SN7GT e212SN7GT

AFC HC« SWEEP

0315 47K

.40R SPEED 1313 O' 30321

95 .11

1008 132 R328 GRI-' 059/F 42.58 c332

240 2 R31.5 361EG

C318

02m/

R3.8 E120

C321

28F

200K 220

R319 eoK

.50 v

- C331

VI6 6AU6

LIMITER -AMPLI

0354 470K

5

4265 v

8296 4 MIED

v 2.20 1295 ... 297..1299 -

512€ I 061e +

361EC. R300 "X' ri 20

02

•

1316

VIS 6SQ7

1st auDio

VERT LINEARITY

2 VIOB

Y212SN7GT 1200,,

REO

GREEN

L.238 c269 94(08 çeuo. FieF--0269 390K

BRIGHTNESS R2614 500 K

R279 •70

R306 2 7K

03" D291

0283 224

C271 oc

R304 2K

5 "Tyr----11-313

2 R3:15

C325 47

R270 OOK

7 5./L

BAC

4303 5K

HOP SWEEP OUTPUT

3'. 2 VI3 R330 L. I9BG6-G 47°K

334 voiéTE

33 y002210 _

35 J10"

13327 82

7

V14 !MGT/ 8016 H.V RECTIFIER

8333

C32 4 70K

VI5 25Z6GT DAMPER

211

1312 31.0.

00

HOR SIZE L31 , 102.11

8 8333

330

1324 541E

HOR 32- LINEARITY 0478F

C32 3

047 r4F

334 5.300

C330 6

<330 rIn.

800..

• 5 PAC

1141 6AL5

ID r) 'DETECTOR

0355

S 0001-

I- 1/357

.00 04 '9

C

C34

C344 12oI

2

000 0500 __

5c.301 3

-11

r=.

R341 R342 56/6694. - "MN

33K 68K

343

#3244 1X

0345 220

C306-IMF

194

270 R346 22K

C349

002

C348

5000.

C150 0,V1F

2 0348 47 MEG

6

•

R357133K

R347 1 500K riC356

5000

C339 -TCO3

VI9 25L6GT

265 ',OLT

AUDO OUTPUT Ye7342t,

C352 R356

0 61E

1000

R 35, R352

470K 61 R353 K3OK

R349 220K

FOCUS

8335 60K

1305 mE

v

0061(0 63LuNE

*2 75*

4=11

RED

200

GREEN

0364 220

358

109IF

15. 00 152 (SEE 1.371)

HUM BUCK COIL S34. • COARSE FOCUS

d - 41358

RED 430

342

FOCUS Ca.

Re59 820

R360 820

55418

O O

36 363

54

so MF

3

800C, 8000 ELECTROLYTIC CONDENSERS

REF. NO, DESCRIPTION PART NO.

C266 277 278 C297 354 358 C346

C371,2,

C299 C383,4

C327

C319 C213

40 ml. 300V 10 ml, 150V. 150 ml. I5V. 100 mf, 50V. 50 mf, 100V. 10 mf, 350V. 1 nif. 50V.

3,4 150 inf., 150V 30 mf., 450V 60 mf., 350V

p2.eLi. 500mmf. ZOK V HV

Trimmers

RCE-088

RCE-089

RCE-090

ACE-091 ACE-092 ACE-094

RCN-023

.RCY-051 RCY-053

45-380mmf. hor.d

1. 25-1. 95mmf 500V

CONTROLS

DESCRIPTION ?tEF. NO. PART NO.

Volume 500K Volume 500K Brightness 500K Brightness 500K Contrast 500K Contrast 500K Hor. Hold 100K

Hor. Hold 100K Vert. Hold 100K Vert. Hold 100K Vert. Size 2 meg Vert. Lin. 2K, ZW Focus 100K 'On-off Focus 100K On-off

Wirewound & Special

14.347 11.347 R261A R26IA R26IB R26IB R321

R321 R298 R.298 R302 R300 R353 S371 R.353 S37I

R328 R.373.4 R.371

R371

ARC-099 • ARC-104 4.* RAC-097 • ARC-102 SS ARC-097 • RAC-102 •• RAC-098 •

ARC-103 8* RAC-098 • ARC-103 •• RRC-096 ARC-095 ARC-099 • ARC-099 •

ARC-104 5i RAC-I04 5.•

RAN-007 RRW-041 RRW -0435 5*

RAW -04965*

42.5 temp. compensating Globar - 75 ohms 5 ohms, 1/2 W (use with orig, thermal cut-out) 4.6 ohms, 5W (use with thermal cut-out RSR-002)

COILS

REP. NO. DESCRIPTION PART NO.

1201 1.202. 5 1203.7 1204 1208;

1.209.

1.248 L255,6. L257,6( 1.313,

1,314,

1,341 1,342 L343 1.372.3,4 1,376

Input RF & Osc. ch. 8.2 iii..

RF RF choke 242, 3,4 Video IF plate C222. C223. C2I9, R.220 Broadcast filter Coil-IF B. Vid, comp. ch. 165 rnic Vid. comp. Choke R325 Blocking oscillator 315, 316 Hor. size lin. or flywheel 1st audio IF Focus-clamp type Focus, swivel type 5, 249. RF Ch. 2.0 uh. Filt.React., w/PMI Spiv.

RLF-023 RLI-032 RL1-083 RLF-024

RLP-014

RLX-027 RLF -027 RL1-038 RLI-068

ALI-086 RLD-014

ALI-069 RLF -025 RLF -026 RL1-063 RLI-096

TRANSFORMERS


Hor. output (sweep) Audio output Ratio detector Vertical sweep Audio output Yoke u•ed w/clarnp type focus a•s'y Yoke used w/swivel type focus as•'y

T321 T342 T341 T29I T342

RT0-076 RT0-062 RTD-008 RT0-064 RT0-066 RLD-010

RLD-013

t ha••i• mount k

MISCELLANEOUS


X371.2 X371

Selenium rectifier-6 pl, Selenium rectifier-5 pl limited mounting space adjacent to electro-

dynamic spkr dictate• the use of this rectifier Ion trap-replaces earlier double magnet type

RER -004 (See RER -007) RER -007

RET-003

VI 6AU6 1st RF Amplifier

V2 6AU6 2nd RF Amplifier


MISCELLANEOUS

REF. NO. DESCRIPTION PART WM

Ring -large outside picture centering ring

RHM-059

Ring-small inside picture centering ring

RHM-060

Head end-complete RJX-027 (8000)

LS2 Speaker - 4" PM 402C3

151. 371 Electrodynamic ROP-019

Speaker. 1"

B371 Thermal cut-out RSR-002 •••

S34I Focus Switch RSW-066

••• NOTE: It Is with the chauye of malts, ,he, the peeper series ....slut« 8371 is used. With toduluel «vtutept, use RRW-043, S ohm, 4W., W.W. New ...Its, RS11402, requite the series resistree, 8371, te be RUMS, 4.4 ohms. Thotudere, whore efighoul thetwel cet-turt wits um Ivies replaced by RSR-0(Q. The «Waal S elm seer. lutist« 8371 nest doe be teetered by RRL0411.

• 800C •• 8000

V4 6AU6 let IF Amplifier

V5 6AU6 2nd IF Amplifier


V7 6AL5 Video Detector - DC Restorer and Clipper

V8 12AU7 Video Amplifier

V10 12SN7GT Vert. Multivibrator & I Sweep Output

V11 12SN7GT Phase Inverter-Clipper

V12 12SN7GT Hor. AFC & Sweep Gen.

V14 1B3GT/8016 H. V. Rectifier


u

V15 25W4GT flor. Sweep Damper

(Model 800 C Id D)



V18 68Q7 1st Audio Amplifier

[V19 25L6GT, Audio Output

TEST CONDITIONS

Volume - Min. Focus _ Normal

H. Hold _ Normal

V. Hold - Normal Brightness _ Min.

Contrast _ Max.

Meters:

AC 1000 ohm/volt.

DC 20,000 ohm/volt.

Line volte - 117V. All voltage DC unless otherwise noted.

* Use scale 50V or higher.

t Voltages on Models 800A & B only. *5 Min. - Max. of Focus Control. @ AC voltage reading.

1

1 4

1

SECONDARY TOP

PRIMARY BOTTOM

1

• ttAl.5)

VI Cau6;

L L 341

I ST AUDIO

F COIL

7..v 4.SN /GI

f.ALe

L244 —(67)

L243— @

V 2 •

6AUG)

® —L2 08

V 3

12M?

• VS

GAu6

—L2 42

TOP VIEW

VIS

25164 )

C 3 58•1 C354 à

BOTTOM VIEW

TI

13SO7

"U'

Slut

CALS

r -•-

1224 1.225

• :cm 51 o

510 1-6 INCL.

1.212 1.234 1235 er 1237 peL238

• 25e7 8 9 2 0

52016 6AU6 I onos 6206 V2 2NoR.F I •-.-/S.W-M.A.r--

5 IK 5,4 L 204 .4

12fi.226 VI 6AU6 1st RF

1209 1210 1211

03e Pre xi' L211 L.213

arf

2 3 4 5 6 7 9 0 11

R,05 C210 541y5000

`• czo

3 V 38 OSC

Le°2 12AT 7

V 3A CONV I2AT7

V4 1ST IF 6AU6

1111 6245

800C, 8000

V5 V6 V7A V8A V88 V 7 B V9 2No LE 3Ro IF CET ST VIDEO 2 NoVIDEO DC RESTORER PICTURE TUBE 6AU6 6AU6 t2GAL5 v212AU7 V2 12A.U7 1/2 6AL5 1013F 4

C249

tool3 lOO S op too EL2cati 1242 2 6 L243 6252

RED

6243 100K

CONTRAS CONTROL

62112.2 6201C TUNING C21 HEAD END 10K T CONTROI OIASSIS

— .671.-01iTOT-£1d— OrTC—HirME7.6- 27 i1/71-EL— L208

117V 60-

1371 6)

137264

T 5000 male 4 MAN CHASSIS

* C327 CONNECTED AS INOKATED BY DOTTED LINES watt, C134 86337 OWED à 1376 USED WITFILS2 PM SPEAKER

IN WHICH CASE HUM BUCK COIL IS OMITTED

I-275

8371 THERMAL

CUT OUT

3:5371 POWER

C371 1501.0

' C372 1506W

AL IN0 VFW ITT 2110 396 OUTPUT SEEP VOIT VOLE VOW 25L6GT 129.767 &WS . SAU6 6A06

6373

A 1371 061376

SPICE FELD 80 A

C373

B. • .1659

B. +145 V

+ C374

-12?

VID VIO CET A. GALS emri

R375 470«

1ST 260 OSC RF RF CM 6.4U6 64.416 12477

6374 196666 1256741 12917GT 2141 461 66116 64LS 1374 6.507

HOR Hors, SYN DAMPER V9 056 AIM AmP

D I 0.4 KNA4

3

AUC1 AUD. 1ST DEE AUCI.

CONIT•ssT CO•TROL

,1}••

SIRS

012•• • .

6. c04,47cDoN5 ••• RI-

A 64 coo«

SMr-e'el ;ten,.

1 ..1 L.,. I. I1333 FOCUS con

C278 ISOMF •

VIIA VII8 I2SN7GT CLIPPER

V2I2SN7G

1 6354 I 4709 1

6246 c274

C256

5— L256 165 UM

V2 12SN7G

R301 42, R292 C293

45 NC

73.11

C277

WAF = ._ •

6296 6296 ',ANNA

1000 OOK

LI 6299 2.211

C295 mr 04 SIF

298 2 vxm ibmc

V 12 A V1213 6332

k'212SN7G1 I2SN7GT 75K

AFC HOR SWEEP tie 660 29311

13318 62K

C32t

2MF

- VI7 :6AL5 :DETECT

0

6342

Rae 6 150K 6313 R

200K 220

R319 100K

C348

C349 5000.

- 054E0 j - vOt uNE'

C333

390

I2SN7GT

/C3/9 1200 e 45-380

IIZ

t.i5.61-24216.9.FGREe C 0292

OC 2 5, 266,5069

lox 05 1267 4700

o

OC BLACK

6303 I SK

C326 .0022•0 6130 470K

6279 6279 47K 196G

Vise 25W4GT DAMPER

V14 IB3G 8016 H V RECTIFIER

327 6335 500 470K

304 2 1 2K 8f. 5 811

265 VOLT

VI8 VI9 200

6S07 25L6GT 7344 LSI OR 152 (SEE 1371) Iv AUDIO AUDIO OUTPUT 1641£ GREEN

NoTE LATE PICOUCTKIN 6361,6362.6363 REPLACED ei COE OR R377 11700A SW)

C352 6356

6351 6352

470K IC*

6555 103K

HUM BUCK COIL 53416 COARSE FOCUS

801 ELECTROLYTIC CONDENSERS


C64 C31A C3113

C31C C45A C455 C45C C450 ZZA 225 22C 220 C32A,

C62,3

C69

C67A. C112

90 mid., 450V

40 mid., 25V 40 mid., 25V 40 mid., 25V 30 mid.. 450V 30 mid. , 450V 15 mfd., 450V 30 mid., 15V 30 mid.. 450V 30 mfd., 450V 15 mid.. 450V 30 mid., 15V B, C, D 30 mid., 15 mid., 15 mid., 450V 30 mid., 300V

50 mid. , 25V TRIMMERS

RCE-017 RCE-018 RCE-018 RCE-018 RCE-019 RCE-019 RCE-019 RCE-019 RCE-019

RCE-019 RCE-019 RCE-019

RCE-020

RCE -021

RCE-048

ACT-013 RCY-015

B 13.cae tun'g cond TV tuning cond.

CONTROLS

DESCRIPTION REF. NO PART NO.

Volume2 meg.1/2 W. Br ightne• • 500K, dual Contrae 500K. dual Hor. Hold 100K. dual, Hor. Size Vert. Hold250K, 1/2W. Vert. Size Vert. Lin.I000, 2Y/.

Height 100K,dual, Hone. Lin. 250K, I/2W. Tone 500K, 1/2Y/. Focus 5000, 4W. w.w.

Wirewounds

1/2W. I/2W.

2w.

w. w. ZW.

R69A R84A R845 R36

1262

A.58 A61

R19 R695 R88

R50 R69

ARC-022 RAC-023 RAC-023 RAC-020

RRC-021

RRC-024 RAC-020 RAC-021

RRC-022 ARC-025

RAW-011

RRW-012 300 ohms, 7.4W. 3000 ohms, 7. 4 W.

COILS


1.1 L2 L3,98 L4 L5 L7 L8 LIO 1.18

LI5,19 1.14 L2I

7 h.. 75 ma.. filt. ch. 7 h.. 140ma.. lilt, ch.

90 uh., video choke 55 uh., video choke

Video detector choke Variable choke hor.•i id Focos Choke-broadcast Choke -RF amplifier "K' Choke -RF amplifier"K' Osc. Cathode Choke Cathode Choke Assy

RLF-005

RLF-006 RLI-007 ALI-008 R12-009 RRC-034 RLF -008 RLF -009 RI.1-003 11.1.1-006 RI.1-019

R1.1-031

TRANSFORMERS

DESCRIPTION AEA. NO. PART ND

Vert. Osc. Vert. Output(sweep Hor. Output4weep)

Audio Output Yoke

FM IF discriminated le Video IF 2nd Video W 3rd Video IF 445 kc IF 4th Video IF Composite 455 kc & 10. 7 mc IF le Video IF

AFC synchronizing Power. 50 cycles Power, 60 cycles B-C antenna B-C oscillator

T8 T9

TIO 1.9 T6

TI T2 T3 T13 T4 T5

T7 TI4 T14 T11 T12

RT0-016 RT0-076

RT0-017 R.1.0-001

RTD-003 RTL-023 RTL-024 RTL-025 RTL-027 RTL-033 RTL-034

RTL -053

RTM-00I RTP-037 ATP-040 ALA-007 RÉ.C-012

MISCELLANEOUS


SI

LEI

Switch - RF Coil any, complete

Loudspeaker - 12" PM

Replacement Speaker Cone assembly

RJX -014

UOP -1206 UOX -005

VI 6AU6 RF Amplifier

V2 7F8 Cony. 61 Osc.

V3 6AC7 1st Video IF

V4 6AC7 2nd Video IF V15 6SL7GT Hor.disc.-Vert. sync. amp V20 6 S V7 Audio IF

V16 6SN7GT Vert. Multivibrator V21 6AQ7GT Disc. - Audio Amp. V5 6AC7 3rd Video IF

V6 6H6 Vid.det. - Vid IF Bias Rect.

V7 6AC7 Video Amplifier

V9 6SN7GT Clipper -Hor Sync. Amp.

VIO 6SL7GT Hor. Die. -D. C. Amp.

VU 6SN7GT Hor. Multivibrator

V12 807 Hor. Output

V13 8016 H. V. Rectifier

V14 6AS7GT Damping

V17 6V6GT Vert. Output

ina 6SA7 Converter Radio

V19 6SG7 Audio IF

V22 6V6GT Audio Output

V23 5Y3GT Rectifier

V24 5U4G Rectifier

* Measured with VTVM t Measured on 50V scale ** Use multiplier with 1000V scale

@ AC Voltage

Use vacuum tube volt meter unless otherwise noted.

Unless noted all readings are DC taken by a 20,000 ohm/volt meter, selector

switch at channel No.1, contrast at maximum and brilliance at minimum.

6

_Cre • •ICE T•CLE

vi-oor /per

COMM{ ••••

0

TICI.CrISMO,. TM» 110.1e10•1 •SS

.restrkt. noneerat. mauve.

ess

CHASSIS TOP VIEW

CHASSIS BOTTOM VIEW

SMMITOISS ••••

For Production Changes, see Page 106.

RIO 200

lo

VI R F, AMPLIFIER

6AU6

ceco e2

LI dOl

82 U6

LI

LIS

RA SID

TITI 1.0TOM AM IMITM F0.11 OF

MT. SI ME SIMON SCMMTK•ily

lb • S.M., OM FOR IMIT.CITT Toi SUMIR •04•CtliT TO TITS

SIM. Muff COMIESIMOS

OIMITall MS TM AM« libM•Ti•

0MielbOb OF .0[4•111. »var.« •S VOW. fle« FROM OF 51*1 1,14

TH Ce7A

'VVV. 881 LESKO.

C58

05KM 1237

1000

R42

t

c4

V 2A V3 CONVE RTER-TELE VISION Im VIDEO I F

o NANO MVO., - 7F8 Ti6AC7 151 Put I-F

°MOO RA1800

cej 3

722 • •

123

•

1'24 •

125

I A -

me mu. v.v me commute., omen MT IMIMILCOMIST

SAM AS Tt•

VIS CONVERTER-RID*

GSA?

C68 47

-e-Inrs111° r T32

T13 45sec

NM, PSI Gb•MMS •

OM% MT mow couj

toni onm"%ns"°e"e"m ll "I MD sai eOlo«CTIO TIC

UNI •• POI TO.

VW/ AUDIO I F 6SG7

R55-120 R92

33K

TELEVISION TUNING

Co'

V20 AUDIO IF 6SV7

27 91AC TRAP 82 85

100K NCO

V 9A

CLIPPER - 6SP47G7

é

M9 Ilk imEG 0325

1511F

Meg

MEG

VI2

HOR OUTPUT ( 807

Tt 130 PIS 14

801 14 V5 A V7 VS(STERNAL

2» VIDEO IF 2e VICRO IF VIDEO DETECTOR WED AMPURCII INDTrepre COATiNS

6AC7 SAC'? 4- obe SAC/ L3-270•N GROUNDED

73

VIO Vroà

NOR SYNC AMPUFIER MDR. DISCRIMINATOR S,2 - 6SNIGT 42 -6SL707

)

R2S-2.2 lee

824 1000

RES -Ste

179ee DIME

110v 0+

VERT SYNC

TVA V210 V22 CISCRIMINATOR AUDIO AIIPUFER AUDIO OUTPUT

6A07GT 42 6A07GT 6V T •

• 01.1.10

FILAMENT Si

LA £zis. Le:ArS

IISV 1110.1.4

14 47H PIK 1-•

V 108 so

ELC. AMPLIFIER Itt -IISLNIT

032 .03510'

C3IS

401IF

1131 100K 330K 81L •

•

832 IR20 T C32A 17.00 30Yr

Vit

MONIMNO wri•

W eenie" R7 INES.

ve2 • NOR. OUTPUT

.68060

1.11 VERT

L. SEEL FOCUS COL mn 11400-7%.

V 13 H V RECTIFIER

8016

L7 WIDIN effizejs'.

V158 VI6 LINEARITY

VERT STIC AINPUFIER VERT MULTIVISRATOR 42- 6SL7GT 6SN7GT

SUM

_I_ 034 .021IF

V II: VERT OUTPUT

13V6GT

840 TIGE2C 2.2 WES ISIEF

G35 . IMF

842 857 293K 470

VERT

V23 RECTIFIER c..63 • 5730T e--.

V24 RECTIFIER 3048 _ 23.01

415Y

F" 3014F

• t-cle

134 VOLTAGES MEASURED WITH A 20,000 OHM P R VOLTMETER. CHANN L SWITCH AT NOi CONTRAST AT MAX. BRIGHTNESS AT MIN.

'USE MULTIPLIER WITH 1,000v SCALE

7


RU. NO, DESCRIPTION PART WI.

C27A.B

WC,

C40A

C4OB

C40C

C4013

C45/3.33

C45C,

C50B,

C50C

C106 C107

C108 CI22A CI 228

C8, 100

C101

Cl 18

30 mid., 300V

D 30 mid., 300V

30 rnfd., 300V

15 rrifd.. 300V

15 rnfd., 300V 15 mfd., 300V

15 infd., 300V

0 30 rnfd., 50V

40 mfd., 25V 40 mfd., 25V

90 mfd., 450V

30 mfd., 300V 30 mfd., 300V

15 mfd, 350V

15 mfd., 350V

TRIMMERS

RCE -043

RCE-043

RCE-044

RCE-044

RCE-044

RCE-044 RCE-043

RCE-043

RCE-018

RCE-018

RCE-017

RCE-045

RCE-045

RCE - 002

RCE-002

RCY-029

RCY-015

RCN-023

I to 8 mmf.,

TV tuning capacitor

SPECIAL

trim.

500 ain't., lectro-

film, HV

CONTROLS


Volume 2 meg

Brightness 500K

Contrast 500K Hor Hold 100K

Vert. Hold 250K

Vert. Lin.1K, 2W

Tone-500K. Power switch-500K

Vertical height-100K Hor. linearity 250K

Focu• 5K, 4W

WLFtEWOUND & SPECIAL

R135

RIO8B

RIO8A

R86

RII5

5.58

R107

52

R49 R46

R20

1;1123

119

RRC-045

RRC-051

RRC-051

RRC-041

RRC-042

RRC-043

RRC-040

RRC-040

RRC-041

RRC-042

RRC-057

RRW -011

RRW-012

300 ohms

3000 ohms

COILS


LI

L2. 25,26,

L29

L4,8,

L7

LIO

LII

LIZ

L13

LI4,R

LI5

LI6

LI7

LI8

L20

L2I

L22

L24

L28

L3I

L32

L33

L34

L36

C56, 98.

Antenna choke

27 Fllameut Choke Osc. coil asey(17. 4rnc)

30

RF choke

RF Cathode choke

Video coupling

FM osc. padder

Hor. & Vert. deli. ass'y

Focus

132

270 oh. , ch ts 68K ohm.

165 uh. choke

B-C antenna

B-C.oscillator

B-C padder coil

Oscillator cathode

7 henry, 140 ma., lilt. 7 henry, 75 ma., filt.

IF cathode choke Broadcast dummy loop

IF wave trap any

Variable ch. (Hor. size)

Hor. multivibrator ch.

Broadcast ant. choke

21.9 mc trap

127, LI 32

Trim. •trip-B-C RF &

ono. 8, 27.9 mctrap

trimmer & coil a•ey

Hor, width con. (incl.

secondary for AFC

feedback voltage) use

w/la TO-076

ELF-009

R11-034

R LI-030

RLI-006

RLI-003

RLI-009

RLM-010

RLD-001

RLF-008

RLI-039

RLI-038

RLA-013

RLC-023

RLM-007

RLI-019

RLF-006

RLF-005

RLI-033

ALL-023

RLL-029

RRC-034

RLI-031

RLI-008

RLW -002

RLM-011

RLD-017

TRANSFORMERS


Vert 0,c.

Vert. Output

Hor. Output H. V.

& Sweep

Audio Output

Power I I7V, 60

cycles.

FM discriminator

1st FM & BCIF

2nd FM & BC IF lut video IF

T20

T25

T27

T26

T24

T22

T23

T15

RIO-016

RT0-076 &

RKT-006

RT0-027

RTP-030

RLD- 005

RTL-037

RTL-038

RTL-046

'/2 7F8 Converter Oscillator

V3 6AC7 1st Video IF Amplifier

V4 6BE6 2nd Converter

V5 6SG7 1st Audio IF Amplifier

TRANSFORMERS (CONCLUDED)


2nd Video IF

4th Video IF

3rd Video IF

Hor AFC

T16

T18

Ti?

T19

RTL -047

RTL-049

RTL -055 RTAI-001

VI 6AU6 RF Amplifier V6 6SV7 2nd Audio IF Amplifier

V7 6AQ7GT Audio Disc.-Amplifier


V9 6SG7 Phono Preamplifier

V10 5Y3GT Low Voltage Rectifier

MISCELLANEOUS


SI Swatch -RF coil a

switch any wired &

aligned (incl. tubes)

RJX-021

Pickup-Variable re-

luctance pickup.

RP X-040

Switch-Coarse focus

control switch (not

on early production

receivers).

RSW-038

1.51 Speaker, 12' PM COP-1247

Vil 5U4G Low Voltage Rectifier

V12 6AC7 2nd Video IF Amplifier

V13 6AC7 3rd Video IF Amplifier

V14 '6AC7 Video Amplifier

V15 6H6 Video Det. -DC Restorer

V16 6SN7GT Clipper-H. Sync. Amp.

V17 6SL7GT H. Disc. - DC Amp.

V18 6SL7GT H. Disc. -Vert. Sync. Amp.

V20 6V6GT Vert.Sweep Output Amp.

V21 6SN7GT Hor. Multivibrator

TOP CAP 425 „

V22 6BG6G Hor Sweep Output Amp.

V23 6AS7G Hor. Damping

V25 8016/1B3GT H. V. Rectifier

V26 6BE6 Broadcast Mixer

TEST CONDITIONS

Unless noted all readings are by 20,000

ohm/volt meter.

Selector switch at Channel No. 1.

Contrast Control at Maximum.

Brilliance Control at Minimum.

All readings DC unless otherwise noted.

Use multiplier with 20,000 ohm

voltmeter.

@ AC voltage reading.

1

8

1

Us.

1=f (me •10...

aCIIECEIMMLE

0,77.•

010.7 SOC.

nna 1.40,1177

CHASSIS TOP VIEW

11111MM mas

CHASSIS BOTTOM VIEW

PRODUCTION CHANGES MODEL 802

1. VIDEO COUPLING CAPACITOR, C3-The original value

of this capacitor was 0.5 add. This was reduced to a 0.1 mfd.

capacitor to improve immunity to aircraft and •levated rail-

way flutter. Change mode at approximately Serial No. 8500.

2. COARSE FOCUS SWITCH-This switch was incorporated

at Serial No. 9000 approximately. This permitted the Focus

control on the front panel to always °quote at or near its

add-position.

lab MEMO .7/120171. tavern

on VIOT17

an 117111701.SS .0.

r RADIO 8 FM

TUNING CONTROL

I.

CP .r

CS)

ZOO

ROM

SID

Tr. lamas a. amt. Mama Or be 11.1707. me. 5cc AILS am man cuss • *Tun. sae .• ral Sammo• 7. ow...7. S71. re ma ••17. •••••• CCe• 71.0.0•70 nc OsAnt surtees. IS vas am. Mollerm• or e.o.m. »rat.. ml1•70 ram .0171 IMO« «GM..

li•

•

0211 B C SISES 68E6

GRO TOE 10

MOTOR

VOLTAGES MEASURED WITH A 23.000 IN OHM PER VOLTMETER CHANNEL SWITCH AT NO I CONTRAST AT MAO BRIGHTNESS AT /MN • USE AIUL r 'Ps 1ER WITH 1000v SCALE

3. 21.9 MC WAVE TRAP-The 21.9 mac wavetrop in the diode

video IF transformer, T18, was changed from an absorption

type to a series tuned trop. This was done to improve the

sound carrier rejection. This change was made at approxi-

mately Serial Na. 9000.

V5 £U010 IF 4567

112 113 VIE 013 VOA COMVER TER TELEVISOR NIT VIDEO IF cc P.M/0 IF 34. VIDEO F 010E0 DETECTOR

1/2 7/ us SAC? 1CO SAC? 4•C7

rif CO. a» »My 11011117S Fat 01•071•13 e• immy • el 1•77 sine cas T. May 111 COMILSOOM VD OM«. M• The. • W. •1717 =MGM TM Mg a 17

Vt OSCILLATOR TELEVISION F hi a RADIO V t 7E8

V6 AUDIO IF 6 SV7

ces Ms it

•

PHOMO PRE.AMPUFIER 6 SC 7

0- 010 SO, 01.11

E- ON 110% 0101.1

/7103 • 1•011

TIO

MOP Cell

VISA CLIPPER

02 £5117111

V 7A 45 NC OTSCR.MMIATOR

Vi • 6A07GT

C. Of.

VISO HOR STAG AMPLIFIER

02- 6 SallGT

Via

Tb

T 17 VIM MS 14

VITA NOR INSGRIMMTOR

Tie- 6547 GI

C•7VISA NOR DISCRIMISATOR

172- 151. 7G1

V78 vs WOO AMPLWIF.11 MIND OUTFIT

-6A07GT MOOT

ye* DC AMPUFIER 'It -451.7ST

VISO VERT SYNC AMPLIFIER

V2 • 6SL7417

PaRT au Tee emo s lICfl . Oil

• • 1011 ICIENAVe UMPLIIMMTIOR

an • • 1.1 OTVIE• POSITIONS • OSOCAST IMO • • IWO MODUSAT100 • - peamosomme T • Tt LEM..

? P e

t444444 .F

1114 ROS 024 INDIC MOPUISER OCIIOWi PICTURE TUIX

GAG 7 sm I/2 TINA MUSA

• Roe

Is

VSI NOR 10.71.11.10.7011

6SPITST

I! VERT MULTIVIDRATOR

IS II7GT

It

e

Has

V22 NOW OUTPUT SMOG

a IMO. COL .00.

V20 VERT OUTPUT

601ST

VI, RUT, 1ER

5114G

802 011•11.1

• CETI. t_ cry* Somf OIl

VIO RECTIFIER 5•73GT ,TZT

Lo.

"Ee



C106

C27A.

C45A,

C40A.

C107,8

C50A,E

C101

Cft 100

Cl 18

90 tad, 450

BCO and

13, C, D:

30-30-15/300

B, C, ID:

30- 30-15-15/ 30/300V

40-40/25V

TRIMMERS:

V

V. 30/50V

300V

RCE-017

RCE-043

RCE-044 RCE-045

RCE-054

RCY-015

RCY-029

RCN-023

TV tuning capacitor

1 to 8 rnmf trimmer

SPECIAL:

500 rnmf lectrofilm,

high voltage

CONTROLS


Volume

Ortghtneee Contrast

Hor.

Hor.

Vert. Vert

Vert

Vert.

Hor.

Tone,

5000 ohm,

300 ohm.

dual, 2

500K, dual 500K. dual

Hold 100K Size

Hold 250K Size

Lin. 1000, 2w,

Height, 100K

Lin., 250K, dual

50K

4w, w. w.

WIRE WOUND

meg. RIO7A

R10813

RIO8A

R86

R 115

R58

R49

R46

RIO7B

R20

RI23

RRC-079

RRC-080

RRC-080 EEC-041

RRC-042

RRC-043

EEC-041

EEC-042

EEC-079

EEC-081

RRW-011

COILS


Li

L2, 25,

L4,8,30

L7

LIO

LI1

L12

L13

L14

L15

Lit

LI7

L18

L20

L21

L22

123

L29

L2.8

L3I

L33

L34

L36

C56,98

Antenna

26, 27

Filament

RF

RF cathode

Video coupling

FM O•c. padder

Hor. IS Vert, dell. am .),

Foci,.

Choke, 270 uh & 86K

reei•tor

Choke, 165 ib.

B-C antenna

B-C o•cillator

B-C padder

Oec. cathode Theory, 140 ma. , lilt.

7 henry, 75 ma., fin.

Variable (hoe. .me)

Oec., 17.4 rnc.

Loop, broadca•t dummy

IF wavetrap aeeembly

}tor. multivibrator

Antenna broadca•t

21.9 inc trap

127 Trimmer .trip

B-C RF Osc. 1027.9

trap trimmer alse'y

ELF -009

RLI-034

ALI-006

ELI-003

RU-009 RLM-010

RLD-001

RLF -008

ALI-039

RLI-038

RLA-013

RLC-023 ELM-007

RL1-019

RLF-006

RLF -005 EEC-034

RLI-030

ALI-023

ALI-029 RU-031

RLI-008

RLW-002

RLM-01I

TRANSFORMERS


FM di•criminator

Lot FM & BC IF

2nd FM Si BC IF

let Video IF

2nd Video IF

3rd Video IF

4th Video IF

Hoe. AFC

Vertical

Audio

Hoe. d high voltage

Power - I I7V, 60

cycle,

T24

T20

T27

T25

T26

RTD-005

RT0-016

RT0-035

RT0-076 d

RKT-007

RTP-030

MISCELLANEOUS


SS

SI

SZ

Coar•e focus, switch

RF head end unit

aligned with tube•.

ON - OFF .witch

Sneaker oval

RSW -037

RJX-022

EEC-079

ROP-013


V2 7F8 Converter - Oscillator


V4 6BE6 2nd Converter

V5 6SG7 1st Video IF Amplifier

V6 6SV7 2nd Video IF Amplifier


V10 5Y3GT Low Voltage Rectifier

V11 5U4G Low Voltage Rectifier



V14 6AC7 Video Amplifier

V15 6AL5 Vid. Det. -DC Restorer

V16 6SN7GT Clipper - Hor. Sync. Amp.

V17 6SL7GT Hor. Disc. -DC Amp.

V18 6SL7GT H. nifiC. -Vert. Sync. Amp.

V19 6SN7GT Vert. Multivibrator

V20 6V6GT Vert.Sweep Output Amp.

V21 6SN7GT Hor. Multivibrator

V22 6BG6G Hor. Sweep Output Amp.

V25 8016 High Voltage Rectifier

V26 6BE6 Broadcast Mixer

* Use multiplier with 20,000 ohm/volt

meter

@ AC Voltage

Use vacuum tube volt meter

unless otherwise noted.

Unless noted all readings are DC taken

by a 20,000 ohm/volt meter, selector

switch at channel No, I, contrast at

maximum and brilliance at minimum.

1

10

803

teen

VOLK.

00.2

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MC•A

CHASSIS TOP VIEW

CHASSIS BOTTOM VIEW

•••••orti, eon

VI SAO.

• .ord• symer Kee, a. • men.... lode Kmommd“,

CAM, •s A sT•md• LIE ▪ smdca• •K male. "JO' MD re. I•ovot KAI, Loa

0.10.01. ml Comm.. re ...Rd men.re. orlc•mme or cLoc•e• 00.•••• AS mmoTo red radv (Ka letclove•

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1001.1

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1/2. 7E a LIN

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RI, cots Roo RR,. Poona Foe otmentLa • II TM. • IT KT 1•0«. COLA L. Tray TM CORMIVONO

OTAKOLLS • MORI • I., me OK caaacTre na LAW

v6 AUDIO If 65v7

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ICI earlt2 Si.350

T TA

V3 VIE VIS INI VIDEO I F COT Er VIDEO LIT 3 VIDEO IF

RAC? Ice RAC 7 SAC?

na 00.

v16A CLIPPER

V2 ISN7OT

v 7A

• 5 MC. 0.5C mINA TOR 6•07GT

VOLTAGES MEASURED WITH A 20.000 OHM PER VOLTMETER CHANNEL SWITCH AT ROI CONTRAST AT MAX BRIGHTNESS AT MIN

.USE MULTIPLIER WITH ipoo. SCALE

5.

T17 V• PM IT

COMOSITC STK. UM.

VISO NOR SYNC AMPUFrER

V2- 65576T

eVII CI rum

V711

woe AMPLIFIER v2.6•07GT

or .0er Ida

VITA

TOW OPSCRIIrNATOR 1/2- IISLTOT

vs AUDIO OUTRIT

*VOGT

vrfe 0 C AmPLIFIER 1/2 -6SL7GT

VISA 014 VISB 024 VIDEO DETECTOR VIDEO AMPUFTER DC RESTORER pICTuRE TORE

i/2.6AL5 SAC 7 CI. 1/2 6•15 10BP4

•

021 NOR MULTIVIBRATOR

.5.7.1

Ago C40•

Jj I3or

O re HOR DISCRIIRMATOR

112- AIL 76T

VISA VERT SYNC Ala•LIFIER

V2-6SL7GT

MKT d TN{ dal. KIT. • Med. • dot MAM•C•

MIN KIMMATIC IKOPLOKATeel

COO. A ALL OTK. MKT..

MIOADCAST •••0 MOOKAT..

r T.L.VIMOM

v VERT MuLTPFIBRATOR

55575T

VO! NOR OUTPUT

6566G

VERY PIPI

VOS HO RECTIFIER

6016

eat

020 VERT OUTPUT

13v66T

• 6270 for «al

APO

CITE AL =Arum

/ •Rownwo

.2/300v

V23 DAMPING 6•576

440v .25v

RE CTIFICA VIO Lai

5VJGT .0, •

210y

t_c4a4 _

11

805, 806, 807, 809 (EARLY)(T and S) ELECTROLYTIC CONDENSERS


C268

C277

C278

C299

C354

C297

C358 C346

C371.2

C3I9

C213

40 mid. , 300V

10 rrifd. , 150V

150 mfd. , I5V

30 rnf. , 450V 10 mf., 350V

100 mf, 50V

50 mf, 100V 1 mt._ 50V

3,4

150 mt., 150V

TRIMMERS

RCE-088

RCE-088

RCE-088

RCE-092

RCE-089

RCE-089

RCE-089

RCE-090

RCE-091

RCY-051

RCY-053

45-380 mmf., Hor.

drive trim. cap.

1.25-1.95 mmL,500V

trimmer cap.

CONTROLS DESCRIPTION REF. NO. PART NO.

Volume

Volume & On-off

Brightne•a

Brightne•s

Contrast

Contrast

Hor. Hold

Her. Hold

Vert. Hold

Vert. Hold

Vert. Lin.

Height

Focus

Focus WIREWOUND

R353

R366

R261A

R226

R26IB

R263

12321

11329

11298

11307

R300

R302

R347

11365

11328

R 373.4 371

RRC-099. RRC-104..

RRC-097* (Tas)

RRC-102.•(earlyl

RRC-097. (T & S)

RRC-102.•

RRC-098.

RRC-103.*

RRC-098.

RRC-103••

RRC-095

RRC-096

RRC-099. RRC-104.•

RRN-007

12RW -041

RRW -043

42.5K temp. comp.

75 ohms, globar 5 ohms, 4W. w. w.

COILS


L201

L202 &

L203 &

1.204

L206, 249,

1.208 &

L248 L255, 6

L257

L3I I

1.312

L3I 3

L314,5

L3I6

L341

1.242

L343

L376

Input

L205. RI, & Osc. choke,

8.2 oh.

L207. RI, Coil.

RF Choke.

259; 372 thru 375. Beater choke, 2.0 oh.

L242, 3,4. Video IF plate plug core.

IF Choke 8. Vid, comp. ch. 165uh

Video comp. choke

Horizontal cire

Horizonaal linearity

Blocking oscillator

Hor. size or lin.

Hor. oscillator

let audio IF coil

Focus

Focue Filter reactor.

ALF-023

RU-032

RU-083

RI-F-024

R11-063

RLP-014

RLF-027

R LI-038

R LI-068

RLD-011 (early)

RLD-012 (early)

RLI-086

RLD-014 (T & SI

RLC-091 RU-069

RLF-025 (early)

RLF-026 (T Li S) RTL-096

TRANSFORMERS

DESCRIPTION REF. NO. PART NO

Hor. Output

Bor. Output

Audio Output

Yoke Yoke

Broadcast filter

Ratio detector Vertical sweep

Audio Output sweep

T311

T312

T342

T341

T291

T344

RT0-076 & RKT-010

RT0-071 ( T

RT0-062

RLD-013 RLD-010

RLX-027

RTD-008

RTO--064

RT0-066••

(early)

I 9 only)

(T & S)

(early)

MISCELLANEOUS REF. NO. DESCRIPTION PART NO.

X371,2

LOI

LS2

LS5

B371

5341

5371

5372

Selenium rectifier

Ion trap-I0BP4 pin tube

Lg. outside center.); ring

Sm inside center lg ring

RF head end-complete RF head end-complete

Spk-4" electro -dynamic

Speaker -10 inches.

Speaker-4 inche•, P. M

Thermal cutout

Focus switch

On-Chi ....ditch

On-Off Switch

RER -004

RET-002

REIM-059 RHK.f.-060

RJX-027.•

RJX-028.

ROP-019*

ROP-018..

U0P-487 (T Li S)

RSR -001

RSW -066

RRC )99.

RRC- 104..

• (805, 6, 7) 4.4 (809)

V1 6AU6 RF Amplifier



V4 6AU6 let IF Amplifier



V7 6AL5 Video Detector, DC

Restorer & Clipper


V11 12SN7GT Phase Inverter &

Clipper (Early & T versions)

270K"

60Ku

1 V12 12SN7GT AFC & Hor. Sweep Cbn. (Early & T Versions)

V17 6AL5 Ratio Detector V13 19BG6-G Hor, Sweep Output


V15 25Z6GT Damper (Early & S)

V15 25W4GT Damper ( T Version)

V16 6AU6 Audio IF Limiter & Amp.



TEST CONDITIONS

Voltages Measured

Volume - Min.

Focus - Normal

H. Hold - Normal

V. Hold - Normal

Brightness - Min.

Contrast - Max.

Meters:

AC 1000 ohm/volt

DC 20,000 ohm/volt

• Use scale 50V or higher

t Min. - Max. of Focus control

Line volts - 117V

All voltages DC unless otherwise noted.

45) AC voltage reading.

Resistance Measured

Volume - Min. w.v. off

FOCUS - Max.

H. Hold - Max.

V. Hold - Max.

Brightness - Min.

Contrast - Max.

Focus sw.- Tap.4

Meter: 20,000 ohm/volt

12

I

1

SECONDARY TOP

PRIMARY BOTTOM

D297 0358 C554

—1208 CHASSIS TOP VIEW

_ _ _

- X 372

o

BO'ITOM VI

12597

M.14

4114. 5

&AU'

C278 t 501M

L. esaeo °PEN ON CHANNELS 2-6 INCL.

1371(F) I 372414

For Production Changes, see Pages 106 and 107. r _

6204 V 3A I V4 157 1 F V5 V6 D6EVAL7TA5 ISTVV814DEO V8 B V78 V 9

..mj L22. L225 ,i2r L227 FerL 228 V Fè 2° N4 TV7 I2AU 7 2PooVIDEO DC RESTORER PICTURE TUBE 108P4 OR 10FP4 I 6AU6 36161 F

• cnol

624e Du l6F

c2s4

I 2 3 94 95 6 97 11.3 te WO N2

-2IC 19r.. 52 1209

1001

_J

I 6 7 70405

'2162a

C.2;439

6 8252

...5176248uN

00

2 91C,:9 L235 E.5UH 2

s,265UN 1260 a2:052211FG:

330,0

6203 Ii 76 05 R201 >RZOB

8244

2 2341 C325 C253 8265

12Au7

• E eer -16252676 c274

1/2 6AL 5

s'R'esIh825S3629;E\ C‘ 26. 19'à GRE eN 2 0312'8'1f:2942

500K

an L29 L226 11-11

SEE NOTE "A" 805, 806, 801, 809 (EARLY) (T and S)

6SATUR670 F

3591.4. ANTENNA MPUT 300 OHMS

-;éQL 2 L13 isi --1'23e°pe

11203 8206 6-1,A4V-We-

516 5Ix

— 6206 - 5000

1201 C2D2 510

6 FNCL 1237 PrL238

szoi• 64U6

V2 2NoRF

1204

L209 1210 1211 1212 1213 173' er Fe ei

2 3 • 5 6 7 8 9 10 12 13 I--

V 38 215 02 2

CONTROL

TUNING t 4 C2,3 1712 ,. OSC Y 12AT7

,.,..........- C.999556 MEAD EN D I

1 •-•,....., I e' _.,

0216 1500 • R209

6243 1COK

CONTRAST CONTROL

1

- C2061 T s000 Noe -L mAN CHASSIS

® 0327 0314NECTED AS INDICATED By 001700 UNES For+ 8097.8065 me 6334 & 6337 ACOED meyEAD Oc09m4 PIN 8 cr vi3 TO 89.

C371 ,501M

C372 ISONF

53T POWER

0371 8371

5

1371

SPKR. FELD 80 fl

C373 1501,4F

6244_

6242 50,00 R24

9275

265V

VIO tST 2ND OSC 2140 380 Mee VERT IS/ CUTPUT 9NEEP v151F 1104F tiOLO (ET AMPL RF NO CCNV 251601 ta9a51 9116 6AU6 6AU4 6AL5 129/17 6Au6 6AU6 i2A77

R373 4 3 9 • 4 4 3

75 /9 C C38I C375 LnL L372 L373 ce, 5001". 50001

''''°I 51115 50001

53'4'1 '°C.15°°°1- 5°°C1

C377

9374 PEO60 1256757 1294751 25W1157 6606 GALS 1374 6507 2 7 7,AB 0.1113 EP.j 3

75 HOR IC« SIN DAriPER CUTPUT OSC Amp

V9 610 AUO. 1ST LE DE1 AL*

08P4 OR Oop4

NOTE "A"

"EARLY" VERSION: Original production. "T" VERSION: Change from a molded type horizontal output transformer T311

to ceramic iron core type T312.

"S" VERSION: In addition to "T" change a larger picture opening in cabinet.

C246 5000 R254

6251 R-470 2211

VI IA VIIB V2 I2SN7GT CLIPPER

1/212SN7G"

8336 3914

6355

04739 74F

-5415/9 113. 470K

C266 5 L756

165 Um â

1/2 I2SN7G

V 124 I2SN7GT FC

V 12B II2SN7GT

HOR SWEEP RED

1313 .11 95

C312 41328 Git 056E 425K c332

C)5 C317 8316 -If •l 220 2000

4265 V

F1:42K8

02MF c321 2MO

2006 2213 R319

- VI7 6AL5 :DETECTOR

D

C34 t -

120

(2o NOTE LATE PFOCUCTEN R361,14362 R363 REPLACED BY PE RESISTOR .R377 moon 5,04)

6337 1346 6800 ram

6323 8326

390 330

328

VI8 6SQ 7

1sT AUDIO

6366

2 11348 47 G

9'-4'AM-4470e: 05 t R267

6326 .06221W 6330 470K

a 0234.1. 71er

VI9 25L6GT

AUDIO OUTPUT 8L GREEN

VI 4 1B3GT/ 8016 H.V RECTIFIER

120011

265 VOLT

7342 LS1

6352 8356

8364 220

C271

8304 128 s eh

6327 R135 540 470K

1216AF 800V

HUM eUCP COIL 534IA COARSE FOCUS

1343

fae

17358 eiMA 430 8339 820

8360 020

13

805, 806, 807, 809 (U and IV) ELECTROLYTIC CONDENSERS


C268

C277

C278

C299

C346

C354

C358

C297

C37I,2

C213

R328

R373,4

R371

40 mf., 300V

10 ml., 150V

150 ml. , I 5V 30 ml.. 450V

I ml. , 50V

10 mt.. 350V

50 mf., 100V

100 mf., 50V

3,4

150 mf., 150V

TRIMMER

RCE-088

RCE-088

RCE-088

RCE-092 RCE-090

RCE-089

RCE- 089

RCE-089

RCE-091

RCY-053

RRN -007

RRW -041

RRW -043

1.25-1.95 mmf.,

500V, trim. cap.

SPECIAL

42.5K temp. comp.

75 ohms, globar

5 ohms, 4W, w. w.

CONTROLS


Volume

Volume

Brightness

Brightness Contrast

Contrast

Hor. Hold

Hor. Hold

Vert. Hold

Vert Hold

Vert. Lin.

Hor. Lin.

Height Foco•

Focus

On-off .witch

•(805, 6, 7) se.(809)

5.353

5.366

5.231

5.226

R227

5.263

R321

R329

R298

R307 5.300

5.402

R302

R347

5.365

5372

RRC-099. ARC- 104...

RRC- 109.

RRC- 102..

RRC- 109.

RRC-102.•

RRC-098.

RRC- 103..

RRC-098.

RRC-103.•

RRC-095

RAC- 108

RRC-096

RRC-099.

RRC- 104. 0

RRC- 104 8,1.

COILS


L201

1.202,5

L203, 7

L204

L206,

L208,

L248

L255,6

L257

L3I3

L314, 5

L316

L341

1,343 L376

Input coil

RF le O•c. ch. 8.2 oh,

RF coil

RF Choke

259, 372, 373, 374, 375,2

Heater choke 2.0 iih.

242,243.244

Video IF plate plug core

IF Choke

8 Video comp.ch. 165 id>

Video comp. choke

Blocking o•cillator

Hor. .ire or Hor. lin.

Hor. oscillator

1st audio IF

Focus

Filter reactor

RLF-023

RLI-032

ALI-083

RLF-024

49

RU-063

RLP-014

RLF-027

RLI-038

RLI-068

ALI-086

RLD-014

RLC-091

RLI-069

RLF -026

RTL -096

TRANSFORMERS


Ho:. Output

Audio Output

Audio Output

Yoke

Broadca•t filter

Ratio detector

Vertical sweep

T3I2

T344

T312

T34I

T29I

RT0-071

RT0-066

RT0-062

RLD-013

RLX-027

RTD-008

RT0-064

( 809)

(C394, S)

MISCELLANEOUS

REF. MO. DESCRIPTION PART NO.

X371, 2

LS2

LS5

5371

S34I

Selenium Rectifier

Ion Trap-10BP4 pic tub

Lg.Outside center .g ring

Sm. Inside center .13 rani

RF Head End, Complete

RF Head End, Complete

Speaker, 10"(Model 809

Speaker, 4" PM

Thermal Cutout

Focu• Switch

RER -004

e RET -002

RHM-059

RHM-060

RJX-027 (Mod. 809)

RJX-028 (805,6, 7)

ROP-018

UOP-487

RSR-001

R.SW-066


V2 6AG5 RF Amp. ( W Version)

V3 12AT7 Converter- Oscillator




V7 6AL5 Video Detector, DC Restorer and Clipper



V13 1913G6-G Hor. Sweep Output


V15 25W4 Damper




V20 6SL7GT Sync Inv. di Clipper

V21 12SN7GT Hor. Control & Ose.

V22 6AL5 AFC Discriminator

TEST CONDITIONS

Voltage Measured:

* Measured on 50V Scale.

t Focus control max. - Focus switch max. clockwise.

*8 Measured on 2.5V Scale.

Volume control off.

Focus control - normal

Contrast - max.

Brightness - min.

H-Speed - normal

V-Speed - normal

Resistance Measured:

Power cord - off

Volume control - min.

FOCUB control - max.

H-Speed control - max.

V-Speed control - max.

Contrast control - max.

Brightness control - min.

Vert. Lin. control - max.

Vert. Size control - max.

Focus sw. control - max.

Hor. Lin. control - max.

1

14

1

1

SECONDARY TOP

PRIMARY OT TOM

V2 ®-1242

GAGS fo,

® -1206

4m!Y CHASIS TOP VIEW I

Pet Lz1

X 371 X 372

BOTTOM VIEW

1754

•SOT

•74.,

4444

441"

CD 02 641E6 U. VER5E114

For Production Changes, see Pages 106 and 107. r _

.204 L2 1.226

1222 1224 1225 Pr

43 70

3 4 5

R2i6

ANTONIA 13 (6 MUT #2,2

1% 1 OHM 3ME

•6 17

CL207 V

I L233 L2162-4 1232 er1234 L235

52

• 5 61314

LZ2 7 .314fi.228

1257

7 8 9

S20.4

2

R201 K)00

C202

510

peL238

14205 R206

5 1K SIK

e pti

32018

V2 6AG5M

2NoR F

VI

6AU6

kr R F

R202 270

C224 331414

V 34 CONV

I2AT7

8206 2 20K

C214 1500

R219 00K

5 R218

V4

Is T IF 6AU6

- 7_ C250

MW

R244 10K

5147 C255

470

1.209 12.0 L21 L.212 1213

le pi se le le 1211

3 4 5 6 Silo,

C2. 122 5201C

TUNING CONTROL

sr,

5

R205 CM 5000

2

1202

cze 1

V 3B

OSC

5'2 I2AT 7 KEN) CPO CKASS6

Ft28 7 470K

57V fr4

60- a 137260

estop oam ow CHANNELS 2-6 INCL

SEE T EIS SCHEMATIC FEN

CONNECTIONS OF v26406 USED IN u VERSION

11371

THERMAL

GUT OUT

1:3311 FERRER

C371 1501S

-RP- 72 .57, .2713

C372 150IFF

‘sr2 c3e3-GOW 6CW

L 376 809W ONLY

"\C ONNEC TIC« FOR

C254 5000

R229 221

R227 2 wEG

CONTRAST cONTROL

- if 5000

4265 V

C245

100

L242 MITE

R244

55 /I C373 IC3 150IÉP

4. 74

Too

.150 V

39 0.245 ,5K

C246

5000 R254

V5

2No IF

6AU6

R 3130

REG

V6

3ao IF

6AU6

C249

O0

f,L243 o ORA

470

C248 5000

R268

0293 828

C258 40 S AM •

22K 8381

64%6K3

C392

C.: S:°°° « 1.

V20

6SL 7GT

FiriASE INV Ce4

V7A

DET

42 6AL 5

C 264

u. 1249

QS

R265 500

805, 806, 807, 809 (U and W) V8A V8 B V 7B

I ST VIDEO 2 NoVIDEO DC RESTORER

w2AU7 I/2 124U7 I/2 6AL5

1255 2 *SUN

1160 ‘,265

- - 1 8'.

1256 o .65 UN

C257

coor

'4) C 500

I_275 02ku

11275 3300

?SO

C227 -I-5030

• Rina

.4»

o 1257

E2650

la 26 7 4220

22e 270

#278

11•EG

V 9

PICTURE TUBE

10P84,10FP4

,e ,269 GREEN 03.2 0292

6328 IMP

6266 10K

OR cw TRESS R231 50G K

R2133 22«

22

1270

..! 0

C457°0' c296 R295 1------MMM

5 VIOA 00« .000

I/2-12SN7GT

Ill? #308 394

,C306

le

C309 470

C307 002 Mr

•

• •

e 8294 100K

e • R296 6 k 4 bFIEG.

Pie' 2, cee.ri .1297- "

e 981 4107, I 310V

HOLD

R390 #389

vice "

r2SN7GT 1200 11.

GREEN

C301 .os

C 302 02.6

R506 2 7K

2 2

en

o 7511

BLACK

11_4,411,1z

#303 SK

47

.•• C406 i-T 13W

V2IA

Vz - 12 SN7Q A FC

313 7 30« 2 R384 1MEG,

V22 64%1_5_ DISCH

63218 040

CI« 3900 8391 331

.385 c396

- ME 0,

C395 680

8586 820

391 OZ

3.3 05

V218

22 V2 T 12SN7GT

HOR OSC

I II-2 C400 c•02

4.70 2000 •

R394 68«

3 C401 e 220

-

R393 27«

R 521 00 K

tee

R396 35K

C405 5000

C•04_ 3900

8391, . 3\ 4.7K

C403

911,6 000

da.m

RF181

mc lc°

M. SOFT 1ST 211) 3410 YO OUTPUT 902E1 YICUE VOW VOL? DET 2211.161' 6912GT Soul Yu. &WS 623.5

R373 4

C /OS 220

220 4117

yr. 1901368 12518701 6,4.3 9W_701 254140T641.16 6315 L374 £607 2 7 7 8 6

NOR C4r2 NON AFC SYNC DIMPER A1.10 A1 St Mr our-aura, osc DES

R375 •7011

Vitt ST 210 OSC. MPL R F RE CORN

122437 644.16 6405 OAT?

9 • 4

cp. 1.375 L372 1373 L. c381 c 0318 2.377 C37H-

1 1 5°C° -{ SCCe SCCCI- '°4 5°4 9°°

NOTE CS.C1TOR MLUES ARE à6.6 uALES5 SPECwED

09

E13 AŒ0 TO

3 3IFEG

1001W/F LATE PRODUCTICO EIROACICAST FILTER

4.541 G IS,524

/.•

VI6

6AU6

LIMITER -AMPLI

5 c342 39

8354 470«

1. 1344

5

•

cc.

R3913 VI

198G6

NOR OUT PUT

#326

22

6537 114EG

5

C410

I' R402 25K IN U

DRIVE %v

3

c 326 .002256 #330 • 70K

•011-^

R403 MOO.

1312

VI4

IB3G T/ 8136

I-1.V RECTIFIER

R399 3.3K

R304 2K 8 n.

3

axe uk

R400 500 470N

20

611

S

5 L3I4

20

C332 emu

1.5AV

VI5 5 25W4GT

DAMPER

3 MP

405

• 5 1.4C

T341 :6AL5

'DETECTOR

14

2 c3451_

C 120T

SC 0▪ 3 01- -Ó11 .3. 0 03 5 70

c5.50.5c1,_ 6800t R3t_ ,Re342

543

#011 2

0345 228

c547 00?

C546 447

C368 470.4.4F - C366

5000

o R546 22

C 349

002 MF

e

C348

5000.

*548 1 47 >1EG

R376 39«

VI8 VI9

6507 25L6GT

1ST AUDIO AUDIO OUT T -4444 £ GREEN

R440 epee .

CA42 T

200

73421 D II ISO

7- 1 •

5

8557 33K

347

C"'

C359=

C352 R3

01 11F

1000

V47K 350 le o 1ji) R353 p: AWL

8555 ie0K

C367

C353

005 1./F

OME Y.1..UME

.30 V

RED

R364 220

c 3513 u

,031F

5 344• GCMRSE FOCUS

RED

L 343

S3418

R358 G 0

.VvY• •30

8359 820

#360 820

R377 1700 5w

oa

BLUE

ORO

810, 811 ELECTROLYTIC CONDEKSERS

REF_ MID. DESCRIPTION PART MI

C33

C58

C62.

C35

C59

C60

COI

C63

CIOZ

C59,

C46

C93

15 mid., 450V

30 mid. ,450V

30 refit., 450V

30 rnfd., 50V

15 rnfd., 450V 30 mfd., 450V

10 rnfd., 450V

30 mid., 450V

2000 mid.

60, 61, 63

Capacitor

Capacitor

25 mfd.. 25V

SPECLAL

RCE-070

RCE-070

RCE-070 RCE-070

RCE-071 RCE-071

RCE-071

RCE-071

RCE -083

RCE-084

RCE-093

UCE-065

Model 810

Model 811

Model 81 I

C53 C28

C103 C57

C56

SOO rnmf., ZOK

.047 mfd. , 600V

.0022 mid.. 1K V 4 rnmf.. 1300V

47 rnmf., 800V

TRIMMER

RCN-011

RCN-014

RCN-019 RCN-020

RCN-021

mica

mica

C49,81

C.80

C12,17

C5. 6

25-150 rnmf..

1_25 rnmf..variabl)

tuning condenser

1.5-15 mmf.

0. 4-2. 4 mmf.

RCY-045

RCY-046

RCY-047

RCY-048

mica

rrllea

CONTROLS


Vo lurne. 2 Meg; On-Off ins.

Brightness 7500, (dual)

Contrast 500K, (dual)

Hor. Hold 50K, (dual) Hor. Size

Vert. Hold 50K, (dual) Vert. Size 100K

Vert. Lin. 1000, 2W.

Focus 1000. 4W.. w.w.

On-01f switch

NV IREW OUN 0

R86, S2

1095 1013

1046

1029

1031

1033

R72

S2

R70

1097

10105

RRC-091

RRC-089

RRC-089

RRC-090

RRC-090

RRC-087

RRC -086 RRC-088

RRC-091

RRW-028

RRW-029 (81 0)

RRW-034

560 ohms, 7W., w.w.

.65 ohm, 4W. ,w. w.

1.0 ohm. 1/2W., w. w.

COILS


LI, 3

L2

L4

L5

L.6.14

LIS

L16,17

L18

L19

L20

LOI

L24

L25

RF input, V2 cathode

RF V2 cathode V2A oscillator cathode

TV audio 1st IF

Video carrier sel trap

TV audio take-off trap

22,23

Video, 165 hy.

Hors., size control

Hurts. lin. control

7 henry, HV sy. filter

TV audio 2d IF

7 henry, LV sply filter

Focus

RLI-006

R1.1-003

RLI-019

RTL-085

RLI-005

RLI-061

RLI-038

RLD-004

RLD-005

ALI-059

RTL-085

RLI-060

RLF-013

TRANSFORMERS


Í PowerModel 811 Audio Output

Yoke

Audio discriminator

1st video IF

2nd video IF

3rd video IF

4th video IF

lot audio IF

Hor. blocking ose.

Vert. sweep output Hor. sweep

Power, 60 cy. (810)

Antenna input

T113 T20

T19

T11

T12

T I 3

T14

TOI

TI),

T15

T17

T18

T1

RTP-300

RT0-052

RLD-006

RTD-007

RTL-081

RT1,-0132

RTL-083

RTL-089

RTL-090

RTM-003

RT0-053

RT0-076 f.

RTP-062

RLA-031

RKT-008

MISCELLANEOUS


SRI

Centering assembly Includes magnet rings

IS split fiber tube. Selenium rectifier.

Ion Trap- model 811

Contacts-speaker

model 811.

RAX-024

RER -003

RET -002

RJC-002



V3 6AU6 1st Video IF Amplifier

V4 6AU6 2nd Video IF Amplifier

MISCELLANEOUS


Head End Unit- inel.

tubes, completely

aligned.

RJX-023

Speaker-ten inch,

used on early produc-

tion model 811.

ROP-018

Board- Antenna term. UJB-004 LS1 Loudspeaker- 5 1/4

in. PM, model 810. UOP-577

Speaker -eight -inch UOP-867 PM, used on Late

production model 811.

V5 6AU6 3rd Video IF Amplifier

V6 6AL5 Video Det. -Clipper Rect.

W 12AU7 Vid. Amp. - Limiter

V9 6SN7GT Vert. Sweep Generator

V10 6V6GT Vert. Sweep °input

V11 65N7 Phase Inverter - Clipper

V12 6SN7 Hot.. AFC -Sweep Gen.

V13 6BG6-G !for. Sweep Output

V14 1B3G High Voltage Rectifier

V16 5U4G Rectifier

V17 6AU6 Audio IF Amplifier

V18 6S117 Audio IF Limiter

V19 6AQ7GT Audio Disc.-Amplifier

V20 6K6 Audio Output

V21 5Y3GT Rectifier


* VTVM through 0.5 megohm resistor

** Measured at start of primary winding

t Grid voltage at V3 di V4 indicates range of Contrast Control

@ AC Voltage

Unless noted all readings are DC, taken


switch at Channel No.4, normal synced

picture, normal brilliance and contrast,

line voltage - 117 Volta.

1

16

810, 811 •667,••• 70166,6. @ONO

r. KW« 771•6311011.46

66•61011 [TO,/

scceo.R+ mono.:

• 16 veg.! 71.665

(S. "1,--i" Roo um« v,» ;' +RR". Rm.

urtneak nul ITIA65

71

rs, vvt0 If

COW

eel%

vOrtKAL MLA .671

60660666 NOLA 11146

CHASSIS TOP VIEW

T 18

117Y 10114

.4 e

Mar

VIDEO CARRIER-SET TRAP

171.14ff c5. _E— C10I t I '-2156114 LIS

o • -a « 64U6 1.14.Z "

, V2B V3 07 R-F AMPuf ER ,, ile T • OK» ceERTER " 3-'1. 6U6S1ST VOE0 K TI2

• N__. __—./ IN 0 0 qfp- i »- C134 i CM

SWF I 7à ,,Cor _LC15 5 heel 244 2

C7 7

l

v2A 4 i2AT7 0770LLATOR

AM 62K

073 10011

Rev« VII 93

47666 C6 CO 15000

2.4 MIF

119 ZAK

«PO TAITE-0« TRAP

21 @MC


ios 2.7K • LEK 56K

ea 27K III

C60 AC LI ±.211Mif

701600 AO« litAr

4,3 301IF

5000 Stie COIL

125

Ve V13 0,0s L6

OR,

VN VS VM 41 97

LO

5120 RAEG

022 6M16

1-F 4111PUFIER

• 1f2A 101

O If Té3

031 Co.,

R26 VERTGAL V9 22011 SIZE 6SN7GT

VERT SWEEP GENERATOR

«ss C30 C31 4'

/.0Cele .C4 OW 626 82K

- •

11008

I 5=1

,MLIF

r 065

I

C106 T 5000

1 C90 "SOLO

tee

250V

-1-C2590KO

vn SAUK 65117 I

I-F AMPLIFIER C68 LIMITER , -9 3.

ICOINAF o• MK

i 12 .1 40e a" We a

l

1616 50K

eV, Kee

447 *LLD >240

048 MEG

Ca 030

I4 %.024.2e 33«

_ IHALD

I vs I ,rou,6,10E01-F

C23

VIO 6V6-GT/G

SWEEP OUTPUT

TI•

V6A

-6ALS

DETECTOR

a. C.26 61/111F

RZO u7 MEG

V126 - 85017 GT KOLSWEEP GEKRATOR

22K

il I__ 2

l. E. cro MMF I

= 4211

TM 47 R83 j 68K 7 .75

C74

C73- 68K coM 150 -r

V7A 12AU7

VIDEO AA«

I/26407-6T Is INS0111411MTCH

47

82

C87

C28

criZTis,

VI99

6A07GT MOO AMPLIFIER

979

-12AU7 ICI VIDEO AMPLI 123

ET" 165U14

L22 *SUH 711

T-

Ve 10F P4 or 1013P• PICTURE TUBE

EKTERINA

TWHuomart, EELLEECC5TTROSTTAATTICG.09L o 16

AL

112IERT OULECTON

MT«

12 BUr..K R97 MEG

TEL

CIO rIS R 2«

2.711 .ceodFo

47K

0000

166 196A1414 C54 1-8.1

• 33 a

T20 131

32

* RESISTOR ROO IS EITHER SPIPITE0 OUT OR LEFT IN He CIRCUIT WHEN THE CENTOMI6 OF He VERTCAL HOLD CONTROL 629 6 CHECKED AT THE FACTORY.

17



C33

C35

C58

C62

C59

C60

C6I

C63 C102

C93

C49

C80

C12 17

C5,6

C8 I

C28

C103

C57

C56

C53

15 rold. , 450V

30 mfd., 50V 30 mfd. , 450V

30 mfd. , 450V 15 rnfd., 450V

30 mid., 450V 10 mfd. , 450V

10 rnfd. , 450V 2000 mfd

25 rnfd, 25V

TRIMMERS

25-150 mrnf, mica

I. 25 rnmf, variable

tuning conden•er. I. 5-15 mmf, mica

trimmer. 0. 6-2. 5 mrnf,

45-380 rnmf,

SPECIAL

.047 mid. 600V

.0022 infd, 1000V 4 mint, 800V, mica

47 mrnf, 800V

mica.

500 inrnf, ZOK V

RCE-076

RCE-076

RCE-076

RCE-076

RCE-077

RCE-077

RCE-077

RCE-077 RCE-083

RCE-086

RCY-045

RCY-046

RCY-047

RCY-048

RCY-051

RCN-014

RCN-019

RCN-020

RCN-021

RCN-023

CONTROLS


Volume 2 meg

Brightness (dual)

Contrast (dual)

Hor Hold 50K, (dual)

Vert. Hold 50K, (dual) Vert. Size 250k

Vert. Lio.1000, 2W

Focus w. w.

On-Off switch

WIREWOUND

w. w

R86

R95

R73

R46

R29

R31

5,33

R72

S2

R105 R107

RRC-091

RRC-089

RRC-089

FtRC-090

RRC-090

RRC-084 RRC-086

RRW-033

RRC-091

RRW-034

RRW-035 1.0 ohm, 112W.,

900 ohms, 7W. ,

COILS


LI. 3

L2

L4

L6, 14

L16,17

1.22,23

LIS

LI8

LI9

L.20

L21

L24

L25

RF input, V2 cathode

RF choke V2 cathode

VZA oscillator cathode

Vid.trap & filament choke

Video choke, 165 oh.

Audio take-off trap

KO, size cont.

Flor. linearity

7 henry, HV, supply lilt.

TV audio 2nd IF

7 henry, LV, supply filt.

Focus-PM magnet

RLI-006

RLI-003

RU-019

RLI-005

RLI-038

RLI-061

RLD-004

RLD-005

ch. RLI-059 RTL-085

ch. RU-060 RLF-017

TRANSFORMERS


Vert. Output

Antenna Input

Pow .'" 60 cycles Audio Output

Yoke

Audio disc,

lst video IF 2nd video IF

3rd video IF

4th video IF lst audio IF

Hone. bilk. osc.

Horiz. & high

voltage.

TI5 T1

T18

T20 01,2

T19

TII

T12

TI3

T14

T2I

TI6

T17

RT0-053 RLA-031

RTP-066

RT0-052 RLD-007

RTD-007

RTL-081

RTL-082

RTL-083

RTL-089

RTL-090 RTM-003

RT0-076 &

RKT-009

MISCELLANEOUS


RSI

Centering ring sup-

port assembly.

Selenium rectifer

Cunifee centering

ring. RF Head End Complete

Speaker

RAX-025

RER -003

RHM-057

RJX-023

ROP-015


V2 I2AT7 Converter - Oscillator




V6 6AL5 Vid. Det. & Clipper Rect.

V7 12AU7 Vid. Limiter & Amplifier


VIO 6V6GT/G Vert. Sweep Output

V11 6SN7GT Phase Inverter & Clipper

V12 6SN7GT Hor.AFC & Sweep Gen.

V13 6BG6G Hor. Sweep Output

V14 1B3GT/8016 Ri-Voltage Rect.

V15 5V4G Horizontal Damping

V16 5U4G Power Rectifier (H. V.)

V18 6SH7 Audio FM Limiter

V19 6AQ7GT Audio FM Disc. &Amp.

V20 6K6GT/G Audio Output

V21 5Y3GT Power Rectifier (L. V.)


TEST CONDITIONS

DC Measurements taken on a 20,000 ohm

per volt meter.

Selector switch set at Channel No. 4.

Normal Synced Picture, Normal

Brilliance and Contrast.

Line voltage - 117V. Values listed may have a tolerance of

+20%.

Measured with a VTVM through

1/2 meg ohm resistor.

it AC voltage reading.


18

S4COMM MEMOIR

ere,. Inn

16:016•1•1 learrrar

MTEOR• TIMM MOM _

vEMC41. IDEO RE.

M1171016,14 a. ^

CHASSIS TOP VIEW

IS 616.11.4T y nun 40,M4

MIR1.167


RP,

In lot« production Model 814, the audio If coil LS has

been changed to an audio IF transformer, 721, to give

added selectivity in the audio channel to reject vertical

pulses and video signal which couse hum and noise in the

audio.

In lose production Model 814, C3, a 5000 mmf. wafer-type

410vt

• V ocvN.,

TI LI CI

vt 6.6u6

RAVIL.EIER

47

C32 6 ear -

v2A ¡MAT)

OSOLLATOR

Cs 1

MAO tra

V2I 5736T

ceo 4 oc u 1.2ieW

Vit VI 55 v19 me vs V7

7 r r • • • vii

CII 47 WS

capacitor has been replaced by o ceramic capacitor, 1500

mad. Cat. No. RCW-026. On sets using the wafer-type capa-

citor C3, it was found that this capacitor started vibrating

and was a source of howl. Since C3 is comparatively dif-

ficult to replace, it is suggested that a rubber block (Cat.

No. RMM-081) be wedged between the edge of C3 and the

chassis of the head-end unit. To facilitate mounting of this

cm

v22 6AUS

i-F AMPLIFIER

Cal VW -

Doto 120

Au»

RO CARR1ER•SET TRAP

L-2LIMAC

II:AKE-Orr TRAP

Ca 1.5 Owe Len

v3 c.7 Ice 6•116 236.5

ST II-SEO fc tt2 13 '5." ETE119q9(boor° D 0

C22

v. 27,01110 If 1.3

5 WI 1COmas C20 50031 war ,

6

RI?

Ce I SCCO

290 v -5-c67

R31 2505

R26 VERTICAL 220K V9 SIZE

69MGT VERT SWEEP GENERATOR•• R11 CIS 3

.....„......ZE ' 55e I

...--------. R30 22MEG -

vue eel

ilea, .36

11.2K

VT? SAW

1-F AMPLIFIER

VERTICAL HOLD •

23

_ 251 1-0 1 vs 68116 3RD m0E0 IF

Teti - einnr

Rte Ce5 III

I"

v6A

-6AL5

DETECTOR

C26 PiAlf

v711. 12467

VIDEO AMU cze

642 Fit

820 AEG

I ---7, ---. Irv/ rt07-67

I 31

Fat.F 1555

iyOnCRMINATOR

LieeTER Ssv

Vie I é é eSm7 I

re \--Ok C75 T l,i

R75 47 1770:4 - 07191 n " r GSell C

C-6" A, - A •: -.-_-_-.6 C100

850 T OW 21K ,a„,-r be, 0 r _I_ , 1. 1 56K MK

rubber piece, it should be cut into o V shape so that the

edge of the capacitor C3 is held in the channel in the edge

of the rubber block.

Another source of howl was found to be the tube V2 (12AT7)

being or becoming miCrOphOnic. Where this is the cose, o

e

2mEG

CS? Oths

lead cop (Cat. No. RHX-014) should be mounted on the

12AT7 tube.

A third eCterCe of howl was found to be the textolite rotor

and/or the metal guide ring on textolite rotor of the oscil-

lator wafer of the channel switch becoming loose and vib-

rating. The guide ring should be cemented to the textolite

C76 reef

L

v1913

4- 6407GT AuDO AMPL.FIER

I-78 - mau7

VIDEO wet.

C97

ea3-Raires

5-2m8

R61

R23 IDO

Rn

713 123 err` MUM

L22 *Sum 711

Lew R70 3305

863

114•Cx El

C110 029.1f

51.9 2•K

_LC.04 2eff

814 Ve

12KP4 ELECTROSTATIC PICTURE TWIE

SHIELD Exect.1:. 2.3,ATING

vERT,fOiECTeN

K) 02 HOR.

DEFLECTION

CM?

R112 270K

BRIGHTNESS

4 7K T

R116 — C55 33013

JRE ram...WM t

1-141 3311

V20 en-CT/0

A110.5 OUTPUT

315 V acw LS.

nos 15•0*. Fa

mo

32 ̂

• RESISTOR 71110 IS Cana SHORTED OUT OR LEFT IN THE CIRCO wield THE CENTERING Of THE VERTICAL HOLD CONTROL 529 IS CHEWED AT THE

R.13 MAY BE REMOVED FROmi/Cted/Y. THE CIRCUIT AT THE FACTORY WHEN THE CENTERING OF THE VERTICAL HOLD CONTRCL 829 rs CHECKED

rotor and the textolite rotor should be cemented to the

shaft with "Dekodhese Cement". Extreme caution should

be observed when applying this cement. The cement should

only be applied to the guide ring, the textolite rotor, and the

shaft. The cement should not touch the fingers of the elect-

rical contact ring which extend through the textolite rotor.

19


REF. NO. DESCRIPTION PART HO.

C97,8 .30

C9I 90

C45A 30

C4513

G45C 15

C45D

G32A

1.7.32G,B15

C32D

G60

C35,6

C95,6

C120 C22A

C22B

C93

CII5

C114

C92

C I 12

inf., 300V

mf., 450V

mf., 450V

30 mf., 450V

mf., 450V

30 mf., 450V 30 mf., 450V

mf., 450V

15 mf., 450V

50 mf., 25V

60 mf., 300V

60 mf., 300V

4E rof., 10V

30 mf., 450V

200 mf., 50V

ZOO mf.. 50V

1000 mf, 6V

500 mf, I5V 100 mf, 25V

TRIMMER

For television

tuning.

RGE-009 RCE-017

RCE-019

RCE-019

RCE-019

RCE-019

RCE-020

RCE-020 RCE-020

RCE-048 RCE-054

RCE-054

RCE-096

RCE-103 RCE-103

RCE-104

RCE - 106

RCE.107

RCE-108

RCY-057

CONTROLS

DESCRIPTION REF. NO PART ND.

Volume .t.ial, 2 meg Brightness

Contrast

Vert. Hold

Vert. Lin.

Tone 500K, dual

Height Horis. Peaking

Focus Horizontal Centering

Vertical Centering

WIREWOUND

55 ohm•, 7 watts.

R69A

R84B

R84A

R35

R.40

R.695

R36

R50 R74

R87

R88

R73

RRC-079

RRC- 117

RRC-I17

RRC-114

RRC-I18

RRC-079

RRC-115

EEC- 116

EEC-119

EEC-IZO

RRC-121

RRW-046

COILS

REF. NO, DESCRIPTION PART MO.

LI

12

L3, Kt 19

L4, 7

L5

Lk

L8

LII

L13

L14

LIS

L18

120

Filter ch., Thy., 140 ma.

Filter ch., 7hy.,140 ma.

RF coupling Width & Hor. lin.

Video detector

Osc. cathode

Focu•

Filter (foci.)

Filter choke, pl. supply

Video amp. Video amp.

RF coupling Cathode, IF

RLF-018

RLF-019

RL1-006

RLD-014

RLI-009

RLI-032

RLF-029 RLF-032

RLF-031

RL1-039

RLI-038

ELI-003

RLI-033

TRANSFORMERS

DESCRIPTION REF. NO, PART NO.

Vert. Osc.

Vert. Output

Hor. Output

Power

Audio Output Antenna input

Audio IF

Osc, & RF

channel 11

FM chsc.

lot video IF

2nd & 3rd video

4th video IF

Vertical blocking

T26

T9 TZ5

T 10 T4

T6

T21

Ti

TI

T2, 3

T4 T27

RT0-074

RT0-068

RTP-303

RT0-073 RLA-033

RL1-089

RU-091

RTD-009

RTL-I01

RTL-102

RTL-104 RTM-007

MISCELLANEOUS


SRI

Oval loud•peaker 4.1c6"

ISelenium Rectifier

ROP-015

RER -005





V6 6AL5 Video Detector

V7 6AG7 Video Amplifier

V9 6T8 Clipper-Hor. AFC Disc.

V10 6SN7GT Clipper - Limiter

V11 6J5 Vertical Sweep Oscillator

V12 6 SN 7GT Vert. Sweep Output


V15 1B3-GT High Voltage Rectifier

V16 6W4GT Hor. Sweep Damping

V17 7 5U4G Low B+ Rectifier

5U4 High B+ Rectifier

V19 6AU6 1st Audio IF Amplifier

V20 6AU6 2nd Audio IF Amplifier

V21 6SH7 Audio IF Limiter

V22 6AQ7 Audio Disc. Amplifier


TEST CONDITIONS

Readings taken by voltmeter 20, 000

ohms per volt.

@ - AC Voltage Reading.

DNM - Do Not Measure.

20

1

815

1

rc

«dig C4.1

41

eill•CAL Meg, •••••••••

VI RF Amin. WIER

"u'

.0

100

G103 47

R103 3300

V24 GONVERTER It2 - 7F 8

6216

TO 47 2 6104 * ,0 47 •

10.

R102 • •

10« 715

Nee

ee.,ereee 49011 05W 646110114651 37

d-rtyn---f—re=ib TŒ Ir

310 0 723

, 717 , Su,

mg Gams 74.-732 OR MMUS MA. 13 MT SIAM COMER

reeza M"..ri&M"'

Me'

•DJACLN1 TA MAN

r POW COAA•0•01 reaCIrI•Ow7..1.. i/AVgi

ROMA Cor MA».

VI' 1ST MX00 IV 'AU.

r6 7

R92 56«

F.67 22«

V20 210 AUDIO rf

SAUR

76 Lexe-

BOITOM VIEW

V23 922 321 330 959 V16

4123 INEG

04

r 4461 4700

V28 OSOLLATOR u2-7,8

602 4

v2I LUSTER £567

G 12 TELEV.506 TimaNG

699 5000

Ri 47«

6107I470 LS L5 „it

V913 OrSCASSNATOR 1.2 - STD

77 F224 F229

41300F2OUTPUT

r - — Ammer

v3 1ST 410E0 EF 6467

•

•

v9à, 0_410.03• 6UPPER

v2- ET

MEG

<R24

p oll

V4 2NÓ VOE0 1-F

6467

• 12 g ig

278 MC TRAP

CS3

4- 70

••A

548 47500,

Ogir 2 MEG VOLUME

cute eee 5005

S 7 7 5 I 7 3 2 2

7 It 4 3 7 2 8 2 S 4 12 4 7 7

V13 VII2 vi I 344

3

Was 491511155 447 sob gem

NO V9 Ve

91.01

3.4

4E4

611116.48

LEAS ellimultailMIS

re 900112 1f

lcieo 4000 MED

VS 3R0 VIDEO er

6467

C 3211 15,110

725 344 449

v134 VIDEO 0E7EGTOR

1/2- SAL 5

V7 VIDEO AMPLIFIES

SAG?

•

V" PG RESTORER

1.12-134L5

1117 6161 C8

• LIS OuiF i 595

6332 165141. 101.

635-1154* 45.36 1000

co2MEG TRAP cR me ze2t_ 2 ez

RECTIFER SUNG

1.24 OWN

L9 8.11. DEFLECTOR

F12 6634707 V OUT MI

658 C58 R5I1 30X CGS 1.3.

*,

SO

VIS etv REC7601

16367

VO PICT ME TUBE

1641,4

564 465 1179 530 12101 SO« 120«

It LINE 413.71. 10 A

.R66 1 _1.06 <1501(

COI

582 583 680 680

C91 15041. C454 • 6456 905s - 301,0 - 3056

695 - _ C97 606F _ ,.. .-..1- 30.4F __

%DM -lc« Res — our . 301.6 160 •

11,—MAA--•

754 180.11

sorl 1323

V «NM«

015 1000 Mr

811, 821 (T and S) ELECTROLYTIC CONDENSERS


C268

C277

C278

C303 C358

C365

C346

C371, 2,

C299

C383

384

C326

C327

C3I9

C2I 3

40 mi, 300V

10 inf, 150V

150 rnf, 15V

10 mf, 350V

50 ml, 100V

100 trif, 50V

Imf, 50V

3, 4

150 mf., 150V

30 rrif, 450V

60 mf, 350V

SPECIAL

.0022 mf., 1K V

HV, 500 mmf.,20KV

TRIMMERS

45-380 mmf.,

horn, drive.

I. 25-1.95 mmf.,

tuning control.

RCE-088 ACE-088

RCE-088

RCE-089 ACE-089

RCE-089

RCE-090

RCE-091

RCE-092

RCE-094

RCN-019

RCN-023

ACY-051

RCY-053

CONTROLS


Volume dual, 100K Brightness

Contrast

Hor Hold

Vert. Hold

Vert. Lin. 2000 ohm, 2W

Height 3 rneg Focus, dual, 500K

WIREWOUND & SPECIAL

Temp. comp., 42.5K ohm•

75 ohms, 10W.

R366 R226

R263

R329

17,307

R300

R302

R365

5328

R373,4

ARC-104

ARC-102

ARC-IO2

RAC-103

RAC-103 RRC-095

RAC-096

ARC-104

RRN -007

RAW-041

COILS


L201

1202,5

L203

L204

L206,

L207

L242

L243

L244

L248

L249

L255,6

L257, 260

L3I3

L314,

L341

L342

Input

RF & o•c. ch. -8. 3 oh

RF

RF choke-31 oh.

249, 259, 372, 3, 4, 5

Heater choke coil

RF Video IF plate

Video IF plate

Video IF plate

IF choke-7.6 oh.

Heater choke

8

Vid, comp. choke

Vid, comp. choke

Blocking oscillator

15, 16

Hor. width is linearity

lit audio IF coil

Focue-w/PM magnet

Focus w/wing not as•y.

Broadcast filter

RLF -023

R.L1-032

ALI-083

ALF-024

RLI-085

R.LI-083

RLP-014

RLP-014

ALP-014

RLF-027

RLI-085

ALI-038

ALI-068

ALI-086

RLD-014

RLI-069

ALE-017 (817)

ELF -028

RLX-027

TRANSFORMERS


Vert. Output

Hor. Output

Audio output (821)

Audio output (817)

Ratio detector

Reactor filter

TZ91

T3I2

T343

T344

T34I

L376

ETC-064

RT0-071

ETC-072

ATO-066

RTD-008

RTL -096

MISCELLANEOUS


X371

X372

8371

S34I

LS3

LS4

Rectifier -Selenium

250 ma.

RF Head End-corn-

pletely aligned .ith

tubes.

Thermal cutout.

Focus switch.

Speaker-4 in. PM

Model 821.

Speaker-12 in. PM

Model 817.

RER -004

RJ X-027

RSR-001

ASW-066

UOP-477

UOP- 1247



I V3 12AT7 Converter - Oscillator




V7 6AL5 Video Detector, DC Restorer & Clipper


VIO 12SN7GT Vertical Multivibrator & Sweep Output

V11 12SN7GY niase IrP.orter

V12 12SN7GT AFC & Hor.S'weep Gen.

VI3 19BG6G Hor. Sweep Output

VI4 1B3GT/8016 H. V. Rectifier

VI5 25W4GT Damper




TEST CONDITIONS

Voltage Measured:

Volume - Min.

Focus - Normal

H. Hold - Normal V. Hold - Normal

Brightness - Min.

Contrast - Max.

Meters:

AC 1000 ohm/volt

DC 20,000 ohm/volt

Line volts - 117V


* Use scale 50V or higher

t Min.-Max. of Focus Control


Volume Min sw. off.

Focus Max.

H. Hold Max.

V. Hold Max.

Brightness Min.

Contrast Max.

Focus sw. Tap. 4

Meter: 20,000 ohm/volt

1

22

1

1

1

1

0,e

25W4

11S117

BOTTOM VIEW

MU.

CIU.S

ED

For Production Changes, see Pages 107 and 108. - - r -

R204

.38 L29 L226 1.222 ;.M. 1124 L225 pe 3

470

I 2

72212 220

3

8214 lOO

•-•44/..• 4 •5 .6 .7 08

L227

440 411 012

I -

I 8226

I• NN R23.1371'60

I A----euET

300 0,4145 3 ., G eL2,37 L213 2

L232 ,peL231 L235 pr

C201 510

ATeL228

'3

52024

203

52020

.C205 C20

.c.L 201

1 V 6 INCL.

L237

36

2 3 4 5 6 7 8 9 I 12

C202

510

VI 6AU6 IsT RF

72202 2200

12/L238

I R205 R206

51K 51K

__ C5 :11.60

117 V

60-

S2026 6AU6

V2 2 moR F

L 204

L209 L2I0 1.28 1112 L213 L214 e e pi zr RT.' C215 er , 2 9

2 3 1 5 6 7 f3 9 10 II 12 3 L V 38 2.5

p , OSC

3202C C. L.",-„ 1/2 I2AT 7 R211 C22 CONTROLI2 10K 1

TUNING 4 £213 HEAL, Eno 4 9 _- CHASSCS -- ____.- i ...

7

72202 270

V 3A CONV

1/2 I2AT 7

C2201

1001

2013_ i

R2°8 8.C1IV 220K

• fi

72218

C221 47

•

5

72203 c210 5.6 Ky --5000

470

8243 100K

372 1.I1

eS2020 OPEN ON CHANNELS 2-6 INCL. C2013

I5000 MME MAIN CHASSeS

eT3HERMAL CUT OUT

3: 5372ta

C137.1 50,

72371 > 371 L376

C372 • £373 150em

150MF

V4 1ST IF 6AU6

2 6

C255 5000

242

72226 500K

CONTRAST CONTROL

R24 i5

265

C245

00

#244 470

#24

#245 2277

V5 2mo IF 6AU6

47 5000

leC° C246

470 5000 72254

135 V

C249

V6 3mo IF 6AU6

R251

▪ C248 5000

C278 150 MF

V7A V8A V8B CET I ss VIDEO 2 moVIDEO 6AL5 /212AU7 '/2 I2AU7

UH ,760H L 248 WHIT 2 L249

R265 5100

C266

5- L256 165 UN

L255

165 UN

5

R284 47

R2135 47

R2

L260

2 ‘,265 l/F1 - - RED

•

£277

014F

£273 02 MF

72215 3303

R200 3972

72726

MEG

265 V

5.

28

C261

5000

C268

40 MF

811, 821 (T and S) V7B

DC RESTORER & CLIPPER

1/2 6AL5 reL±1269

165 uH tom

o L257 R269

E 265 U n 39077

RED BRIGHTNESS 77263 500K R266 C274

10K 05 R267 • 700

26 8276

INIEG

7

72279 47K

V 9 PICTURE TUBE

12 K P4

GREEN 0313 0293

2

4

R304 2EL 1 2K

8.0 580. 3

R283 2271

C270

DAF

•

x37 7r • - C383. - --C. 184 601e COME

13714- 270D AU0i0 WW1 ST

OUTPUT 9MEEP enDiF VOLE 25L6CT C215147GT 64U6 6406

R373 • fr • 3

C375 q73576 3 C723,7 _ 1373 75

5001". 5000 500C C3780,. 50 15000 500Cr500C1 504

.135 v

R375 4 70K

-

3773 VIO 1.40 ST 2M) OSC «HE CET A. RF RF CPA(

64U6 64L5 12Au 7 64U6 64U6 12477

9374 19806G 125870 I2SN7GT 25w4GT

9 4 • 3 4 3 4

£381 C38

VIIA VIIB 1/2 12SN7GT CLIPPER PHASE INV 1/2 12SN7G

- 270 ss

•--

R 336 I 39K

Mummull9 .4135 el

VIOA 1/2 I2SN7GT

R301 R291 R292 C293 .-4.4"(Wve8AAW(41.~.4.14.4-1

10K 2222 3914 .50

_.c300 S.291 _&292

1002 1.002/001MF MF

C296 R295

i 000 100K

4 •

72297 3921

77294 100K

(

.11

R296 4 36265

294

307 302 COK 3MEC

2 VI OB 8LuEL1.291 GREEN

R299 2221

C305 03 MF

2SN7GT D

R3C7.0 2K

2 7 299

RED

7511.

BLACK

C271 101

C 302 ..021f

R306 2 7K

C325 47

R270 100(

R303 I 5K

C35 c.317

220 2000

R3I4 68K

C 306 220

265 V

UHL tau

VERT .1._PeAp111

V 12 A 1/2 I2SN7GT A FC

R315 47K

/42111/%0rERCNT) 1313

85 o

100K C312 0511F 425K D3.32

R328 Geir

24

V12 B V2I2 SN 7GT

NOR SWEEP ,401k NOW FED

2

72327 5606

C318

- 02m

77328 8221

C32I

2/4F

3/6

R 326 6 150K C3I3 R

200K 220

R319 loom

R332 75K

L 316 2930.

R325 - C329 82K 4700

VI8 6SQ 7

1sT AUDIO

172680C337 270.0

C326 .0022MF

VI3 R330 196G6 •70K

C334 047 MF

T312

VI 4 IB3GT/ 8016 H V RECTIFIER

335 I 2K

3f1.

77335 470K

7/1. .94 ft

VI58 25W4GT DAMPER

50 7

E

L3I4 29.30

R539 3 1203

161

4 47mF

1.315 2930

_C322 „Sin C335

1047e4F 03 C339 eAF 12 ;

265 VOLT

72334 560K

• 5 MC

VI6 T TI T V17 4 5M C IF 6AU6 6AL5

-1324' LIMITER -AMPLI à :DETECTOR , o

641.16 64L5 L374 6507

75 NOR HOR SYN DAMPER V9 6.10 1ST ouTRuT OSC AMP IF DE 1 LuD 4 5 m C

2

5 C342 39

R354 47077

L341

7

£343

-8c3fe7 5000 5000

R34

10

8342

33e( 5000

se«

R550 1000

C31

120

K.*

2

343

7

R344 226

R345 22K

46 IMF

34 7 00,

270 R346 2271

C349

002 MF

C348

5000.

C366

2 R348 • 7 MEG

3

R357 33K

72365

?- 1C356

Tscoo

C359 - 023

Vr9 200

25L6GT T343 1L Ii 0 LOS

AUDIO OUTPUT elle GREEN

3

C352 R356

01 /000 MF

RED

72351 14352

470K

R366 100K

1R349 220K

41 11..1

8355 1/30K

C353_

005 MF

VOLUME 15006

-4275

72364 220

.1.L' .C358

10 MF

53114 COARSE FOCUS

R358

RED 430

R359 L344 1320

S

EiLuE

72360 820

R361 5100

S3418 00

RJR 363

354

50 MF

NO LÁTE PRODUCTION R361, R362,8363 REPLACED El7 ONE RESISTOR R377 (1700/1 541)

23

817, 821 (11 and VI) ELECTROLYTIC CONDENSERS


C257

C258

CZ68

C277

C278

C297

C303

C354

C358,

C299

C346

C371,2

C383,4

C406

C3Z6

C327

C2I 3

10 mf. , 45 V

40 mf., 300V

40 inf. , 300V

10 rrif. .150V

150 mf., I5V

10 inf., 350V

50 mf., 100V 50 mf., 100V

365

100 inf., 50V 30 mf, 450V

I inf., 50V

3,4 150 mt., 150V

60 mf., 350V

10 mi., 150V

SPECIAL

V

20K V

RCE-I00

RCE-I00

RCE-088

RCE-088

RCE-088

RCE-089

RCE-089

RCE-089

RCE-089 RCE-092

RCE-090

RCE-091

RCE-094

RCE-I00

RCN-019

RCN-023

RCY-053

.0022 mf. , IK

HV, 500 mmf..

TRIMMERS

I. 25-1. 95 rnmf .

tuning control

CONTROLS


Volume 100K

Brightness

Contrant

Ho, Hold

Hor. Size

Vert. Hold

Vert. Size

Vert. Lin. 2K, ZW

Height 3 meg

Focus, 500K 25E ohms, drive

WIREWOUND & SPECIAL

R366 5.230

R263

R329

R307

R300

R302

R365 5.402

R328

R373,4

R371

RRC-104 RRC-110

RAC- I 10

RRC- 103

RRC-103

RRC-095

RRC-096 RRC-104

RRC-108

RRN-007

FtRW-041

RRW -043

Temp. comp. 42.5K ohms

75 ohms, IOW

5 ohms, 4W.

COILS

REF. HO, DESCRIPTION PART MO.

L201

L202,5

1.203, 7

L204

L206;219;259;372,

L212,3,4

L248

L342.4

L255,6,8

L257,

L3I4, 315

L3I6

1.341

Input

RF & Ono ch. 8.3 oh

RF Coil

RF Choke 31 oh

3. 4, 5 Heater Choke 2.0 oh

Vid. IF Plate Coil

IF Choke 76 oh

Focu• Coil Focus Coil (Model 817

w/PM magnet)

Vid. Comp. Choke

M60 Vid. Comp. Choke

Hor. width & Lin.

Horizontal O•c.

lot Audio IF

RLF-023

RLI -032

RLI -083

RLF-024

RL1 -085

RLP-014

RLF-027

RLF-028

RLF-017

RLI -038

RLI -068 RLD-014

RLC-091

RLI -069

TRANSFORMERS


Yoke Vert. output

Audio output (821)

Ratio detector

Reactor filter

Audio output (817)

(lor. Output

T29I

T343

T34I

L376

T344

T3I2

RLD 015

RT0-064

RT0-072

RTD-008

RTL-096

RT0-066

RT0-071

incl. C344, 5

MISCELLANEOUS

REF. No, DESCRIPTION PART NO.

B37I

S34I

1.53

LS4

X371,2

Broadca•t filter

RE Head end

Thermal cutout

Focus switch

Speaker-4" PM(821)

Speaker 12" PM 1817)

Selenium rectifier

250 ma.

RLX-027

RJX-027

RSR-001

RSW -066

U0P-477

UOP-1247

RER -004




Ft. 6AU6 1st IF Amplifier

I V5 6AU6 2nd IF Amplifier


V7 6AL5 Video Detector, DC Restorer and Clipper


V.10 12SN7GT Vert. Multivibrator and Sweep Output



V15 25W4GT Damper





br20 6SL7GT Sync. Inv. & Clipper

V21 12SN7GT Hor.Osc. & Reactor


TEST CONDITIONS

Voltaes Measured:

* Measured on 50V Scale

t Focus Control Max.-Focus switch

maximum clockwise @ AC voltage reading.


Volume - Control Off

Focus - Control Normal Contrast - Maximum

Brightness - Minimum

H-Speed - Normal V-Speed - Normal


Power Cord Off

Volume Control Minimum Focus Control Maximum

H-Speed Control Maximum

V-Speed Control Maximum Contrast Control Maximum

Brightness Control Minimum

Vert. Lin. Control Maximum

Vert. Size Control Maximum Focus Sw. Control Maximum

Hor. Lin. Control Maximum 1

24

1

1

1

1

ex 1,0.741r

V13

BOTTOM VIEW

6.4

GAY

OA.

Y2. 6a VERS N947

For Production-Changes, see Pages 107 and 108. r___

11104

LZ L21.6 L.222 L224 L225

2

1227 JEK.2203

5 6 7 11,0 .119 13

1

1203

5202A

C202

120 50 50 V

233 L2362-6 1234 1235 Fir 1237 If1/1238

01 1000

I R205 R206 I •--.N.A.N.-•VW-. SIR MK

1209 L2,0 L2.

al pi se

68K 7 9

$20n 6AG5

V2 2NoRF

L 204

.3

VI 6AU6 1s$ R F

C207 RZO7 100

R202 270

V 3A CONV

'412AT7

Colo -

000

• R29 0011

G224 33.re (---•

100

209

19111

V4 151 If 6AU6

_I_ C250

51•F cZ55

470

1212 1.20

Fer Fer

Z 3 • 5 89

•

1.214 Fe,

/0 11

5202C 529 C212 TONING 10K 12 CONTROL

2.3

C213

R203 C2I0 56y-5000

eS2020 OPEN ON CHANNELS 2-6 INCL. FOR GORNEGTIONS FOR V2 16.061 US(D I"'0" VERSION SU PAGE 27

5371 TNERNAL

0.17 OUT ---

I: 537i PONER

is7v 60-

C371 MOW

C)72

R257 470.

1

ces 2 l I

V 3B OSC 1

L202 I2A-1-7

READ 00 CHASSIS

;7

CONNECTION FOR MODEL «I ONLY -;

Re72 L376

5000

R229 2214

R230 2 mo.

R352 5

lac

. R409

IOU

c24 5

1242 owNTE

R244 39 FR245

15K

COO'

5000 3554

V5 2No IF 6AU6

V6 3No IF 6AU6

IIII G249

03

EL243 oORA

R251 70

248 5000

65

C279 5000

N Mum L248

5000

5255 1000

1.306 Oed ••F

V7A DET 6.415

249

-If

VIOA 12SN7G

R309 15.

C309 470

c 307 002

V8A 1ST VIDEO 1/212AU7

1293

C.295 R295

.000 009

•

297

R294 1009

•••

307 00K

C 500 5000

1R296 II

4 3666

G305 .„ 03«le

.07 Wu.

C273 029F

G26 5000

'YO V

CONNECTION FOR - mom. SI? ONLY

9265V

c2517 _ • 40

•

1500 A 55 + C373 TO«

+ C374

1372.10)

NOTE CAPacrrolL viLLIESARE maw uNLESS SPEOFED

czsz-lowo use No - mov on c4os-o • ea,

C3S11101073 350v 6164-30 130v cry, CO 50.2

AUDIO 51,11 ISO OUTPUT SWEEP VINE 231.567 12:9767 ULM

R373

C408 220

.372 • -c31

•

1605411/4 F

C331 T 04700 5 R375

• 70K

91, 200 3110 vID ve, 1ST DO OSG. VINE vilif DU OWL RF In GO« 6.1.16 406 6065 12aul 611U6 065 8207

00

9150 V

4 44 4

Ci373 1.371 9c03 1 500°

5 L3221373 L371 c C C371 G377 C

"Ceir "C«r e)er 5.34

R374 198668 129961 9.1L5 6517GT 25.0467 EALS 1314 6607 75 2 7 7 4 7 0 5 7 3

C409 - HOP C41 , Now Arc SYNC DANFER MO AM 1St 22L) 4- OUTPUT •7 -I- 05G. Amp 9/\• F trElf AM.

Q 1 V9

• 1300G „110A0 cm,

3 SUES riJ

100919 LATE PROOUCTION BROADCAST FILTER

P390 R5119

C390 02

R3190 1 2

566

V88 21eVIDEO '/z12AU7

COVITROL coes CONTRAST

15000

.1

g1297 2651.1.4

R2177 4700

228 270

vice am( Tr, "WI t2SN7GT Czs.n.

R300 uF 2«

4211). LMANTi

RED

817, 821 (11 and VI) V 7B V 9

DC RESTORER PICTURE TUBE 1/2 6AL5 12 KP4

/ tifro4269 GREEN p3,2 o292 .1 .12

5266

BRIGHTNESS RZ32 SOO K

Z.7

en

11

83 20

C $ce 0261F

10

G325 •7

C299 R30,3 I SR

R265

--NV \AA«

R304 1.211 5 en.

G SI

SOON. •50.

V2IA -I2SN7GT A FG

3151 22K

1--47 C392

-sl000

- . V20 6SL 7GT PHASE INV

V22 6AL5 Discs

• 265

K3

r.e4 T ,30

557 X«

1.354

4505 1WIEG

395 IRO

R3fA 82.

3.9

R380 f NEC

GI« 3900 R33. .13«

1311 01 NF

C399 05 Me

V2I8

N. 12SN7GT KR OSC

I I-2 G400 G.102

„, 470 2.700

, •

3 C401 220

5393 27.

R179 03«

Din

15

R394 686

L9

R396 :79

C405

C404 _ 7900

5395 4.7.

C403 I000

f.

C330 6

R598 15 V13

198G6

OUTPUT

22'

re..z

5

C41.3

I 4' 5402 25K

C326 .0022bif 1732/0 470«

T312

V14 IB3G T/ 8016

RECTIFIER

R399 33.

R400 470.

40

5403

1.314

120

C332 879.10

1.5Xv

VI5 5 25W4GT

DAMPER

u89 3

• 4711,

r45. CMS RAF

459G

VI6 r - 7341

Is.$4, 6AU6 :6415 2 LIMITER-AMPLI c il I !DETECT 22K

0344

3 1, «i f410

C142 39 1 2

45 NG

2

R334 470.

1341

7

co.!

5000

10

357_.00, „--•/1

-11=j4 R341 R342

C355

5000

„AV,' 6800 15.

01.4. C34 I 8345

C l20JJfl

- .F 11341

G346 4111.

G368 4 70•Mai

e -eer--"7 -41346/ 22K

C345 9-1

G349

00

R376 39K

VI8 V19 zoo

6607 25L6GT r$21 o LS5 1s$ AUDIO AUDIO OUTPUTI mum

6 Eligost.60

R348

EG

9357 33K

65

G356

5000

-003539 _

Of MF

1000

R354 R352

470K '°°

7 INC

C353_

5355 lip NOR

Sliz vote'«

9150 Xe.

Rio

01364 220

+_ssse e IONF

5 3•IA 00./ex FOCUS

RED 430

R339 344 IRO

5360 820

R3 7 ? 1700 5W

OR

53410

1014V

25



C257

C258

C297

C299

C346

C364

C365

C37I,

C383,4

C406

10 mi... 450V 40 mf. , 300V

10 mf. , 350V

30 mf. , 450V

I mf. , 50V

50 mf., 100V

100 mf., 50V

2,3,4

150 mf., 150V

60 mf . , 350V

10 mf.. 150V

SPECIAL

RCE- 100

RCE-I00

RCE-089

ACE-092

RCE-090

RCE -089

RCE-089

RCE -091

RCE-094

RCE-100

C227

C224

C327

C331,

C396

3. 3 mm(. ,•ilver :Mc>

3. 3 mmf.,•ilver mici

500 rnrnf. , 20K V HV

361, 397 .047 rnf., 600V .01 mf. , 600V

TRIMMERS

RCN-028

RCN-028

RCN-023

RCN-014 RCN-018

C5

C2 13

Cap., 2-20 rnmfd.

I. 25-1.95 mf. head-

end unit.

RCY-034

RCY-053

CONTROLS


Volume 500K

Brightness 500K

Contrast 2 meg Hor Hold 100K

Vert. Hold 100K Vert. Size 3 ,,,, jg Vert. Lin. 2K . 2w

Focu• 100K

Horis. drive 25K, 1/2W

WIREWOUND a. SPECIAL

Globar. 75 ohms

4 ohms, 1/2W

404

R263A

R227B

R.329

R.307

R302

R300

R369 5.402

5.373

R374

R37I

ARC-113

RAC-110

RAC-110 RAC-I03

ARC-103

RAC-096

RAC-095

RAC-113 RAC-108

FLAW-041

RAW-044

COILS


L201

L202.5

L204

L242,3

L3I4

L3I6

L34I

L344

1.371,

1203,7

L256

L376

Input

RF & o•cillator

Choke -RF , 21 oh.

let. 2d, 3d,vid. IF cony.

Horia. •ise Horia. oscillator

Audio IF

Focus

2,3,4

Heater choke, 2 oh.

RF Input

Vid. comp. (165 uh)

Reactor-filter

RLF-023

ALI-032

RLF -024

RLP-014

RLD-018

RLC-09 I

ALI-069

ALF-017

RU-085

RU-083

RU-038

RTL -096

TRANSFORMERS


Vert. output

Ratio detector

Inter'stage

Mori.. output

'Yoke

T291 1 341

T345

T312

I310-064 RTD-008

RTM-005

RT0-076

RLD-015

MISCELLANEOUS

REF. NO. DESCRIPTION PART NO

X371, 2

13371

Head End complete

Selenium Rect. , 250 ma

Thermal cutout

Switch-push button Speaker -12' same a•

Distributor speaker

RJX-027

RER -004

RSR-001

RSX-018 OOP-1247

S1200D-7







V7 6AL5 Vid. Det. , DC Restorer


VIO 12SN7GT Vertical Multivibrator ,it‘ Sweep Outnut


V14 IB3GT/8016 H. V. Rectifier

V15 25W4GT Damper



VI8 6J5 1st Audio Amplifier

V19 25L6GT Focus Control

V20 6SL7GT Sync. Inv. & Clipper

V21 125N7GT Hor. Ose. di Reactor


TEST CONDITIONS

Voltages Measured:



2.5 volt range

• Voltage will vary more than 20%.

Input 117V, 60. All controls set for normal sweeps,

Focus and Brightness. Measurements are in respect to B- with

a 20,000 ohm/ volt meter.


Short Capacitors C373 and C374

Short Pin 3, V15 to B-

FOCUS shunt R359 shorted.

Focus Control - Full CW

Contrast - Full CW

Brightness - Full CW

V. Hold - Full CW V. Size - Full CW

V. Linearity - Full CW

NOTE: K - 1,000

M 1, 000,000

INF - Infinite Resistance

1

26

SECONOART TOP

PRIMARY OT TON

1 1

FOR RADIO USED WITH THESE CHASSIS, SEE PAGES 101, 102, 103. r

V34 4204

12 CONV 12AT7

16 1224 L225

R216 — I :1203

ANTENNA 3.30EG

«PUT. R2 17 f'. :1S2 /X Ore 33 NE G LI At 1201

ra.2".13-7 •

L233 2 - INCL

Feu 34 a 35 Joe 1231

1227 e[228 VI

6AU6 1st RF

9'L238

C224 4 1S 7 ISIOII

2 n

3 33éro $2028

8209 R206

SIX 5111

%20000.6

V2 6AG5 2NoR F

1 204

1209 12,0 12.1 12,2 12,3

.91 - -

82" I C2I2

L_ sacno °Po. oh CHANNELS 2.6 INCL

1207 5.0 R207 330

LATE. PROO UC TON ADJACENT CHANtEL TRAP

117 if '372 60 -

1. FLUTTER ON STRONG TELEVISION SIGNALS: Inter-

mittent flutter of picture brilliance of a few cycles dura-

tion, similar to airplane flutter, at very strong signal

strength which requires the contrast control set near min-

imum was corrected during production by changing C255

13M

8371

THERNAL

CuT OUT

C371 503ii

•

C372 15001

V 38 OSC

I2AT 7

•

«L2138

1500

R273 00K

ne END cwsses GROuND

v r9 25L6 GT

FOCUS coNTRot._

NOT(000)5 c't",",„.in oN CONTROL OUT IF FOCUS CURR257 IS TOO HIGH

636W c93• GO GC.«


V4 1st IF 6AU6

_1_ 6250 5C00

R2278 2 MEG

CONTRAST CONTROL

'OCHS VERT 1ST 2220 3R0 VIO OTO ST 2220 OSC CCNTROL SUEZ P vEnl NW Via, CET ArAPL RF RF COIN

R373 221.187 ,29.170 RAU& 6AU6 6•06 6AL5 r2Au7 feu6 GAGS OAT? • 4 4 3

C.08 L375 1322 1373 8-1..57.; 220 1 C35001713 C3,17 7 C.378

on

5020 00 tooó 5045000T 500

e.

8374 198660 1294702 61,5 651 1G , 251r461 6•4/6 6415 1.374 615 7 8 8.,,.j 3 4 7 7 7 4

409 NOR 220 1,Ctffetn

1.0.1 At c 5”.„ OSC A3LP

irons a .05 mfd. to a .5 mf., 200 volt paper capacitar and

changing R280 from a 39K resistor to an 18,000 ohm, )5

watt resistor.

ALIO ISt DET MID

2. INCREASED RF GAIN: Early Model 818's were made

with 6AU6 second RF amplifier. During production, the

second RF amplifier was changed to a 6AG5 to give in-

creased RF gain. Chassis with this tube (6AG5) are mark-

TO «AD END

VS V6 2.D 1F 3RD IF 6AU6 6406

C245 6248

liCre;— 11— .: 100

"•124 3 '"ORA

6275 5000

R381 225

V 7A V8A CET IsT VIDEO

1/2 6AL 5 y2 12407

.41 ,I20 ' 5

WlTI

6.6

5— L256 65 UN

1255

165 UN

C50

8297 C309 3921 470

—C306 — -..- 5294 001 C307 / ICOK •iF 002

NE

1•390 1 #389

50K 1502

V2IA V218 K2 - 12 SN7GT UV V2- I2SN7GT HOR CISC HOR OSO

I li— e; .. 2 C400 c402

R388 s 470 2000 , MEG

8-4 C 596 3900 R 391 3311

RIB5 C396

C273 021AF

V8B 2 RoVIDEO V2 I2AU7

3.1257

E25508

1292 GREEN

C326 002N« 2330 4 702 3

C401 Pc403_1_ 220 Clnao

• R393 27K

C•04_ 3')Or,

818 V76 V 9

DC RESTORER PICTURE TUBE V2 6AL 5 12 K P4 te,.. am 0313 D295

. I 22F

R266

BRIGHTNESS Ri.63A 500K

4 1314

Trt

C1316 e

E C332 82 7 1200

R339

15K V

T 34 5 047.« C2365,0,

• 5 NC. V18 4 5rd c VI6

6AU6 à "DETECTOR "21:

L 60AL5 6J5 Rtur z 1p4, 2 LIMITER -AMPLI

5 R4326; c3461

5

R345 - C5A.:1.606D. 10 AMP

•-•• • 22K

E e. 1201 2

45 a C C368

C 34:723.5.3r

10— •70 R368

C5:3:0400

noo EN

•

21342 I

0 4 7 0 343 MEG

14 7 00.re

70 R 23244K

35,M,M,7 6„„ 68«

cd "W" on the front apron of the television chassis. Elec-

trical connections for V2, 6AG5, second RF, are shown in

schematic diagram.

If the head-end is rewired for a 6AG5 second RF amplifier,

it is necessary to realign the RF head-end circuits. The

following inset shows the connections for a 6AU6 second

RF amplifier.

R 404 0 5.« vOLLON CONTROL

3. REGENERATION: Over-all regeneration on an advanced

setting of the contrast control was removed by connecting a

5000 mmf. capacitor RCW-3014 from pin 4 of V7 to the B—

bus at the terminal strip adjacent to the socket.

V15 25W4GT DAMPER

C335

T ISO

R304 2 28. I 2K

Brt 5 13 El 3

632 5 47

«left

5405

820 (EARLY, R and T)

•


REF. NO. DESCRIPTION PART NCI.

C33

C35

C58

C62

C102

C46, 59

C28

C57 Is

C53

C31

C5

C49

30 ml, 450V

30 ml. 450V

15 ml, 450V

30 ml. 50V

2K mfd, 6V

60,61,63. 30-30

15-30@ 450V

SPECIAL

.047 mfd, 600V

C118*. 4 rnmf, 800V

mica.

500 mmf, 20K V

01 rnfd, 600V

TRIMMERS

2-20 mrnf. trimmer

25-150 omit, mica.

RCE-076

RCE-076

RCE-076

RCE-076

RCE -083

RCE-084

RCN-014

RCN-020

RCN-023

RCN-025

RCY-034

RCY-045

CONTROLS


Volume

Brightness,

Contrast

Nor.

Vert.

Vert. Vert.

Brightness,

Contrast,

Focus,

, 2 meg

7500 ohms , SOOK

Hold, 50K

Hold, 50K

Size, 25014

Lin., IK, 2w. ,w.w.

100K

2 meg

3K ohms, 25 w.

WIRE WOUND

R86

R951

R73/ R46

R29

R31

R33

R95*

R73•

R72

R105

R107

RRC-085

EEC-089

RRC-089 RRC-090

RAC-090

EEC-084

EEC-086

EEC-105

RRC-105

RRW-033

RRW-034

RRW -035 1.0 ohrn,

900 ohms,

1/2 w.

7 w.

COILS

REF. NO. DESCRIPTION PART No.

LI, 3

L2

L4

1,6, 14

L15

L16,17,22, L18••

L5,19 (T)

L19**

L20 L21

L24

R-F input, V2 cathode

R-F choke (V2 Cath. )

Choke V2A oec. cath.

V2 fil. choke

TV Audio take-off trap

23. Vid. choke,165 uh

Hor. sine control

3. 7-30 millihenry

width & linearity

Hor. linearity

Focu• coil I. PM magi).

7 henry HV fil. Choke Television audio let IF

Choke 7 henry LV

RI-1-006

R LI-003

RLI-019 RI-1-005

R1-1-061

R LI-038

RLD-004

RLD-014

RLD-005

t RLF-021

R LI-059

RTL -085

RLI-060

TRANSFORMERS

DESCRIPTION REF. /40. PART NO.

Vert. Om-.

Vert. Output Hor. Output

Power

Audio Output Yoke

Hor. sweep &H. V.

Hor. sweep &H. V.

Power 60 cycle

Power 60 cycle

Antenna input

Video IF let

Video IF 2nd

Video IF 3rd

Video IF 41h

Audio W. Hor. sweep B.O.

TI5

T19

T17

T17 (T)

T18

T18*

T1

T I I

T12

T13

T14

T21

T16

RT0-053

RTD-007

RLD-007

RT0-076••

RT0-068

RTP-066

RTP- 301

RLA-031

RTL-081

RTL-082

RTL-083

RTL-089

RTL-090

RTM-003

& RKT-009

MISCELLANEOUS


SRI

Si

Selenium rectifier, 150

Head end unit-R-F

Switch-Selector(on-off)

Speaker-12"PM

Center k ring & •upport

assembly.

Centering ring.

ma. RER -003

RIX-023

RSW -063

U0P-1247

RAX-025

RHM-057

• Used in R & T only.

•• Early and R.

II Early only.


V2 I2AT7 Converter- Oscillator

(Refers I.() Early Chassis)


(Refers to It & T Chassis)


( Early Chassis)


(Refers to R & T Chassis)


(Refers to Early Chassis)


(Refers to Ft & T Chassis)

V5 6AU6 3rd Video IF Amplifier 1



(Refers to R & T Chassis)

VG 6AL5 Video Det -Clipper Rect.

V7 12AU7 Audio Amplifier -Limiter


VIO 6V6GT/G Vert. Sweep Output

VII 6SN7GT Phase Inverter-Clipper

VI2 6SN7 Hor. AFC & Sweep Gen,


V15 5V4G Hor. Damping

V15 6W4G Hor. Damping

(Refers to T Chassis only)

V16 5U4G Rectifier



V19 6AQ7GT Audio Discriminator

V21 5Y3GT Rectifier (low -voltage)


TEST CONDITIONS

Voltage Measurements:

* Measure with a VTVM through

1/2 megohm resistor.

@_à. AC voltage reacting.

DC measurements taken on a 20,000 ohm per volt meter.

Selector switch set at Channel No.4.



Line Voltage - 117V AC

Values listed may have tolerance of

+20%.

Resistance Measurements:

t Resistance value varies with Control setting.

28

820 (EARLY R and ID

www44

390.04O 199 ,0.41 — n n .

o FPUVILII

meow. W envot.. -1 RATE MUNI

PRESET CONTROLS

vOlemeerw•Ty_fil lei

TOP VIEW

vsRIRAL 430 Ott ee•ORIZEMITAL

POLO A411

WELD 41140

RIO

FOR RADIO USED WITH THESE CHASSIS, SEE PAGES 101, 102, 103.


TI LI

"-Li«

ANT TE1491 000.140

rs-9

,

Szc '_ ,as

421 5Y3GT

VI 69.16

MIPL.FER

42* MATT

°SOL L ATC44

ALC40 TANE-OFF

Cm VICIECI CARRIER-SET TRAP TRAP

C9. _L— t CR test «WS

... .. eels 1 à tüls•so Les

le: - d Ice

n 611.16 ,fre.„, 2.9.41W &ben' . 1/29 V3 cir el2AT7 _.„...».

. 4 j----.4 S6001110 .-4 II Ic0. 1411,92 17 el000tooloo .019.19TER 57 VICEO IV 92 DO INSEEI Is tis

n sows ; Ap3 Ica — Komi Cto-4-o".^.m-4 41 22

MOW S WI 244 5000I

Cl 7 2 2

▪ 1 4714144

CS FF

C.

-2.•

▪ I

prays-U.arrrr•-•

COO # RC LI EZIMIF

I.24 9 11.0No7 EGO 900

'5 I SOW out

II 1_ FOCUS COIL :Del 125

r--

4.

_J

VI)

SRI

VN 59 35 94 V7 VIT

R OS

Lo C•02

L6

T :

•

woo IOW MO3

446

rni

120 I I/EG

VIII VSI

-6SN7GT 1-6AL5 PHASE INVERTER CUOMO,

C10.

R42 47

C.9

VERTICAL SOK V9 SIZE

MOOT VERT SWEEP GOEI4ATOR 4* R1.3

iONEG

C30

2.00219

;▪ Co

suP I R30 7244EG -

VI? 43 1 6196 6947 I

AMPLIFIER LIMITERCAS .

cf OFIEcTOR 7)5

BMW

4125

'SWOT 11011.9REEP GETCRATOR

VIA 1201.11

VEIE0 W.IPU

979 i-nour 7a

VIOE0 AMPLI 123

‘122

70 :WSW.

.14 °CIA&

RECEPTACLE

C29

•

V. 1004

PICTURE MOE

ExT e,u. „g

VEREGIIkECT1011

•

R12000, - • I tI

VLSI STIR MK) IS EITHER SHORTED OUT OR LEFT IN THE GROAT WHEN TWE CENTERING OF THE VERTICAL HOLD CONTROL R21 IS CHECKED AT THE FACTOR,.

...RESISTOR (0.3 Ot REHOVE0 F.40à4 99E9E0.1 AT EKE FACTORY WHEN THE CENTERING OF TIME VERTICAL SIZE CORER*. R 31 IS con-orn

29

830 (EARLY, R and P ELECTROLYTIC CONDENSERS

REF NO OUCRIPTION PART NO

C33 IS mid . 450V RCE-070

C35 10 mid., 50V RCE-070 C58 30 mid . 450V RCE-070

C62 30 mid. 450V RCE-070

C59 15 mid . 450V RCE-077

C60 HI mid.. 450V RCE -077 C6I 10 mid., 450V RCE-077

C63 30 mid.. 450V RCE-077 C46 20 mid . 450V RCE-093

C93 25 mid . 25V RCE - 086

C102 2K mid RCE-083

TRIMMERS

C49 25-150 mmf., ink RCY-045

C60 1.1 mmi RCY-046

C12, 17 I. 5-15 :Tim!. , mica RCY -047

C5,6 0.6-2.4 rnrnl. RCY -048

C131 45-380 rnmf, RCY -054

CONTROLS

DESCRIPTION

Volume (on-off) 2 meg

Brightneite 100K

Brightnee• 2 rneg 100K

Contra. 500K

Contra,. 2 met

Hor. Hold 50K

Vert. Hold 50K

Vert. Site 250K

Vert. Lin. OK ZW, w.w.

Focus 3K, 25W.

WIREWOUND

1.0 ohm If 2W

900 ohme 7W

e., R86

ROS

R95

R73

R71

R46

R29

R31

R72

R 05

R107

PART NO

RRC-091

RAC-101 (Early)

RAC-1052 (RIT)

ARC-101 (Early)

RRC-1052(RITI

RRC-090

RRC-090

RAC-084

RAC -086

RAW-033

RRW -034

RRW-015

COILS

DEICRIPTION PART MO

LI I

12

L4 1.6.14

L15

L16,17

L18.19

LI8

L19

L20

1.24

L25

TRANSFORMERS

DESCRIPTION

Choke RI' input V2 c•th

Choke RF V2 cathode

VO -A o•c. c•thode

V21,1. yid. carrier •etir

Audio Take-Off trap

22,23. Vid. (165 Ink.)

Hor. Lin. & Hor, •Ine

Ho..

Nor. Lin.

Cho!. 7 by.. HV fil

Choke 7 by.. LV Isl.

Few us

RLI- 006

RLI-003

RLI- 019

p RLI-005

R LI-061

RL1-038

RLD-014 (T)

RLD-004(E•rly & R)

RLD-005 (Early & R)

RLI-059

RLI-060

RLF -017

REF. NO PART NO.

Vert Output

Audio Output

Yoke

Hor. ',weep. H. V.

Coile-prs & •ac wsnding only.

Power 60 cycle•

Power 60 cycle•

Video IF let

Video IF 2nd

Video IF 3rd

Video IF 4th Audio IF let

Audio IF 2nd

Hor. •weep B.O.

Antenna input

Audio Diec

T15

T20

TI?

T17

T18

T113

TOI

T12

T13

TOO T2I

L2I

T16

T I

T19

RT0-053

RT0-052

RLD-010

RT0-068

RLT-004

RTP-006

RTP• 101

RTL-081

RTL-082

RTL-083

RI L-089 RI L-090

RTL-005

RTM-003

RLA-031

RID-007

(T)

(Early 10)

(T)

MISCELLANEOUS

REP. NO DESCRIPTION PART NO.

SRI Selenium rectifier

He•d end unit.R-F

Loud•p eeeee

Centering rsng

RAR-003

Rix-023

ROP -015

RHM-057



(Refers to Early only)


(Refers to "R" only)


(Refers to "T" only)


(Refers to "R" & "T" only)


(Refers to Early Chassis only)


( Refers to Early Chassis)


(Refers to "R" & "T" only)

V5 6AU6 3rd Video IF Amplifier I (Refers to Early Chassis only)

V5 6AU6 3rd Video IF Amplifier (Refers to "R" & "T" only)

V6 6AL5 Vid. Det. & Clipper Rect.

V7 12AU7 Video Limiter & Amplifier


V10 6V6GT/G Vert. Sweep Output

V11 6SN7GT Phase Inverter -Clipper

V12 6SN7 Hor. AFC & Sweep Gen.




(Refers to Early & "R" orgy)

V15 6W4G Horizontal Damping

( Refers to "T" Chassis only)

V16 5U4G Power Rectifier ( H. V. )


V18 65117 Audio FM Limiter

V19 6AQ7GT Audio FM Disc. & Amp.

V20 6K6G Audio Output

V21 5Y3GT Power Rectifier (L. V.)


TEST CONDITIONS

Voltage Measured:



1/2 meg ohm resistor


NOTE:

DC measurements taken on a 20,000 ohm per volt meter.


Normal synced picture, Normal


Line voltage - 117V. Values listed may have a tolerance

of + 20%.


t Resistance value varies with

Control setting.

30

830 (EARLY, R and T)

TOP VIEW


Tle

vl GAMS

R-f NAPL,FIER

TI Li CI

u.

4

vZ4

OSOLLATMI

574

cs4 DOM J .

SOO« 571

AUDIO I-F

94SK

7t7 SIR

GOO 4 AC LI tlimif

OU 47 Les

CS .6.24 MA ,-

12•71F"'2.-21T-s-•

•1[5rffr,-.

a.r1-Er•-•

L•15TITS-•

AUDIO

e'IST vefel3e0 7F TO 15.:C75:T1-tce:smlcie" V' , no

VIM CARRIER-SET tRep

5101,

Ce4 n Die ,71_.ec:: 24 11 or 1œMA

@ it. 1

42,4,410

C7 22 5000i COD

47mvf

IAMf

ctojl47.7TE.

V22 SAM

1-F AMPLIFIER

RAW __..

4100

45-

Cel

VI7 VO SALK 63117

1-f AMPLIFIC11 CRATER CAA

IMO viDEOI-F ne

{IMF mc

ISIM-DTM SWEEP OUTPUT

GUIS 0000 MAW

ism UK I

1175 CM

G75— NMI PROF ITO MA

VIA

-GALS OETECTOR

U7 IMEE. I56 UN 7n

NM 124J?

VOTO MIKE

V7I1 -1M? in

vino Amok, 123 eMemmmomi, 1 r . von y '1145. 2 13 •

EeLII4 711

GT9

DO

'vzo OKA -GTFG

Aube OUTPUT

]:

eRCHTNESS

R116 C55 330n

G1i3 ▪ • RESISTOR DO IS EITHER SHORTED OUT OR LEFT NI THE CIRCUIT WHEN THE CENTERING Of THE VERTICAL HOLD CONTROL 1125 IS CHECKED AT THE

CORES, S TOR R113 MAY OF REM FACTORY. FROm THE cificulT AT THE FACTORY WHEN THE CENTERING OF THE VERTICAL SIZE CONT711:4. 1131 IS CHECKED

DEFLEC▪ TION

CZU 08.0.1

RED

Ve «Pe

PICTURE TUSE

EllektEATIING

31

835 (EARLY and R) ELECTROLYTIC CONDENSERS


C59

C60 C6I

C63

C102

C33.35 58.62

C93

C46

15 mfd.. 450V

30 rnfd. , 450V

10 mfd.. 450V

30 mfd. , 450V

2K mfd.

30, 30,15 mfd. ,

450V, 100 rid& 50V

25 mt.. Z5V

20 inf., 450V

TRIMMERS

ACE- 071

ACE -071

RCE-071

RCE-071

RCE-083

RCE-085

RCE-086

RCE-093

G49. RI

C80

C12,17

C5,6

25-150 minf., mic

I. 25 ininf. ,variabl,

tuning condenser

I. 5-15 rnmf. , mica

0. 4-2.4 mmf..

t RCY-045

RCY-046

RCY -047

RCY-048

CONTROLS


Volume Contrast

Brightness

Contrast

Brightness

(on-off) 2 meg. 500K

100K

2 meg

100K

SPECIAL

R86 R73

R95 R73

595

RCC-091 RCC:-101

RCC-101

RCC-105

RCC-105

560 ohms, 65 ohm,

I. 0 ohm,

7 w., w. w. 4 w. ,w. w.

1/2 w., w. w.

R70 R97

R105

RRW-028 RRW -029

R RW-034

COILS


1,1, 3

L2

IA

1.6. 14

L15

LI6,

17,22.

23

LI8 L19

L20

L24

L25

Choke RF input V2 cath

Choke R-1 (V2 cathode) Choke, V2A o•c. cath.

Choke Vid carrier set

trap

Choke Audio take-off

trap

Choke Video. 165 henry

Horizontal size

Horisontal linearity

Choke 7 henry HV fil

Choke 7 henry, LV fil.

Focus

R L1-006

R LI-003 RU-019

RU-005

R LI-061

RLI-038

RLD-004

RLD-005

RU-059

RLI-060

RLF-013

TRANSFORMERS


Veit. 0,,c.

Vert. Output

Ho, Output

Power 60 cycles Audio Output

Yoke

Hor. adapter kit

Video IF 1st

Video IF 2nd

Video IF 3rd

Video IF 4th

Audio IF, Ind 6 Znd

Audio IF 1st

Antenna input

Audio Disc. Hor. blocking osc.

TI5

T17

T113

T20

D1,2

T 11

T1Z

T13

T14

L5,21

T21

T1

T19 TI6

RT0-061

RT0-071

RTR-062

RT0-052

RLD-006

RKT-008

RTL-081 RTL-08Z

RTL-083

RTL-089

RTL-085

RTL-090

RLA-031

RTD-007 RTM-003

MISCELLANEOUS


SRI

Centering a•sy.

Selenium rectifier

Loudspeaker 5 1/4' . PM

RA X-024

RER -003

UOP-577



(Refers to Chassis Marked Early)


(Refers to Chassis Marked "R")


(Refers to Chassis Marked Early)

V3 6AU6 1st Video IF Amplifier (Refers to Chassis Marked "R")



V4 6AU6 2nd Video IF Amplifier (Refers to Chassis Marked "R")

V5 6AU6 3rd Video IF Amplifier V10 6V6 Vertical Sweep Output



( Refers to Chassis Marked "R")

V6 GALS Vid. Det. - Clipper Rect.

V7 12AU7 Vid. Amplifier - Limiter I

V9 6SN7 Vert. Sweep Generator

V11 6SN7 Phase Inverter & Clipper

I V12 6SN7 Hor. AFC R.t Sweep Gen.

V13 6BG6 Hor. Sweep Output

V14 1B3 H. V. Rectifier

V16 5U4 Rectifier

V17 6AU6 Audio IF Amplifier V22 6AU6 Audio IF Amplifier


V19 6AQ7 Audio Disc. - Amplifier

V20 6K6 Audio Output

V21 5Y3 Rectifier

TEST CONDITIONS

DC Measurements taken on a 20,000

ohm per volt meter.

Selector switch set at Channel No. 4



Line voltage - 117V.

Values listed may have a tolerence

of + 20%

Measure with a VTVM through

1/2 megohm resistor.

t Resistance value varies with con-trol settings.

Value given is with control set giving

maximum reading.

@ AC voltage Reading.

32

835 (EARLY and R)

OCCOMITY INTW•o - n mr.

RUFF 130.1

t-ve vt00.4. 10•111

02.

now93•ML Hole

TOP VIEW

3HELA Mimeo

For Production Changes, see Pages 108 and 109.

vi RAUB

R-F AMILIFIER

TI LI CI

IL] c cLoWo ON

100ARA o

7 .3

1500

Fe 20:1

r;

cel

02 56/1

01 VIDEO CARRIER-SET TRAP 476elf iri 1 *5. -. .. 1

AtEm. -._,--s-....4« -

ry 1 V2B..,

ce. 1--10 n 0 0 1.1.0 0 s--1 .-

13 Slaw *—w -° _I_03

• Ras - MOMS 24K 2 C7 7

470MW CR 5-24 IMF

1270sK 41«

MOO TAKE-OFF TRAP

21 801C LIS

LS V3

64U6 £1 6viuL0 TO ,44" -WOW . IMO 61 VIDEO If Tit 14

,611000er00 5 ,b1IF

2

2411

r vs

I 31U4iDE0 TH

1.w. I 0 811

fa..1 NR ,

L_ íi m

-1-ces 7:t /- 5000

VGA

-GAAS

'DETECTOR

00 Wo• C26

M7 T6IBF 4311 7

LIT 165 UH

230V

LS 16.51,1 7(0

VIA 12047

VICI(0 way.

C27 05 WE

RIO IIIEG.

To

Ca

D47 I.

R21 S6K

278 -12Aul

711 VIDEO AMPLI 123

J

'. L22 :WSW'

711

- 023 PO

8211 3.34

025 ear •

C104 'AF

vs 'OMNI

PICTURE TUBE

XTVITIAANc.igATING

MLI•twomart, ELECTROSTATIC SHIELD

1:ERT OWiTrer

211111

•2

•LACE

TEL

112 loco RED

413.

6

-

er1101 ,-. ti

WAIF 4.111 001P-4 e •-• 22K

COQ AC 1152100F

C64 -I-- 1173 os T 500K war

*Lao 1-F

• CONTRAST

RO

000k I5C00

TSV

859 IlK

032 206

RII7

II K

0121 5000 -eINEG

027

360V

R9 100

103 4711

INF7117

026 VENTCAL 106 220K v• 65/176T SIZE 27K

VERT SWEEP GENERATOR •

...-"*****.---... --................. WIele--030 2291E6 =

's CSO CS

3 .0021e .06 INF

290V

c41_ .001 T

ROI 820

Re VO

VERTICAL HOLD •

VIO 6V6-67,6

SWEEP OUTPUT

9020

080 L5 It

425V

R4 2

VILO Vie - 6511767 1-6ALS PRAM INVERTER CLAMPER

•

V118

«kitIWAT 11R236

4-

me

C37

VV 5Y3GT

R64

RIII 837 1600 SOB

R92 6.930

C37 029 SOK

3024 R45 66/1767 >1006

AFC CCIKTROL

C.3111 R46 506

r .17tIZ § 047 HELD

C39 2 1 " c.• .« -1-.os. 0 , 2 135AW M

R!., C44 1201/167 _G47

If CA3 C45 390 I 854 IMF ••

if

I MEG

1,71 -tri*Ii1 . EP GENERATOR

Kt, TIN

I▪ g 80

3.3 NEG

049 110‘,0

C78 050 ef 82x

RIC°3 3 IL 1

032 •7

C49 25-60 1154 IWIF 000 1112. FRED,

csi moms

0104

413 6866-6

SWEEP OUTPUT .3n,

056

330

C94 SWF I

02 490 If 270 • 065

C97. 00 NE

VIO 183-67/8016 N-V RECTIFIER

063

3311

0000

22« CSI 7111600 I Kee

•MOV

COI CT≥

301e ] 3OIW 117C

•wev nor 540

R97 5

01«

• v 60.3.•

124 in

COS

360V

'SUP

• FOOUS COOL L25

VI VOS V3 • •

V4 22 • t

49

VII

913 mos LB

SRI LO

U el 39 vs V9 V7 V17 -=

230v

422 VIT 1141.16 611U6 6507

I-F IMPLIFIER I-F AMILIFŒR L•IIT▪ ER Cf11 3

C96

21.294C 2 I T21 j

10 ?re-,- - 36.44F a

a

0102 006 22K > 15000

/410

C6

707

11366 MOCO ,

078 10011

R79 22

1.21

C69 50301 War RIO. ROI 560 MK

6

• CFO 5000

t. 4 01114

6100 II ROS II °C. C75

ats - - -!5

C 113

V2 -GT 01501111114000

e

47

II

CM

DOW

2..2131T

C77

C99 310 1 DOS wax ,

R 76 11, 4

= CW94

CO7 01,1F

6

•

V198

- 6407 GT A0 08521.1448

V20 NM -GT/0

AU010 OUTPUT

C93

à T.

KM T20

p0516215 C79

TegLID

RESISTOR RI10 15 EITHER SHORTED OUT 08 LEI' IN THE CIRCUIT WHEN THE CENTERING Of THE VERTICAL HOLD CONTROL Ft29 FS CHECKED AT THE FACTORY.

33


EF. NO, DESCRIPTION PART 140.

C33, 35

58,62

C102

G46, 59

60,63

C49

C80

C12,17

C5, 6

C81

30, 30.30, IS rnf.

2K mf.

30, 30,15, 30 ml

TRIMMERS

RCE-070

RCE-083

RCE-084

RCY- 045

RCY-046

RCY-048

RCY-054

25-150 rnmf.. mica

I. I imnf.

1. 5-15 mm!., mic2RCY-047

0. 6-2. 1 mint

45-380 mmf., mica

CONTROLS


Volume 2 ,,,,g

Brightness 7500 oho, Contrast 500K

Hoe Hold 50K

Hor. Size Vert. Hold 50K

Vert. Size 250K

Vert. Lin. 1K Zw., w. w,

Focus 3K, 25 w.

SPECIAL

R86q

R95

R73

R46

R29

R3I

R33

R72

R105

R107

EEC-085 EEC-089

RRC-089

RRC-090

RRC-090

EEC-084

EEC-086

RRW-033

RRW-034

RRW -035 1.0 ohms, 1/2 w. , w. w.

900 ohms, 7 w., w. w.

COILS

EF. NO DESCRIPTION PART NO.

LI, 3

L2

LA

L6, 14

LIS

LI6,

17,22,

23

LI8

LI9

L19,

L18

120

1.21

1,24

Choke RE- input,VZ cath

Choke RF (V2 cathode)

Choke V2A osc cath

Choke V2 fil Si Vid

carrier set trap

Choke Televi•ion audio

take-off trap

Choke Video 165 oh

Coil Hor size control

Hor linearity control

Hor width and Lin used

with RT0-076

Choke 7 henry HV, fil.

TV audio (2nd I-F)

Choke 7 henry 1:.V, fil

Focus coil and PM mag

R LI-006

R LI-003

RLI-019

RLI-005

ELI-061

R LI-038

RLD-004

RLD-005

RLD-014

RLI-059

RTL-085

RLI-060

RLF-021

TRANSFORMERS


Vert. Osc.

Vert. Output

Hoe. Output

Power

Audio Output

Yoke

Hor. Output

Kit for old stylus transformer.

Coils -pri St sec

windings. Audio Disc.

Video IF 1st

Video IF 2nd

Video IF 3rd

Video IF 4th

TV audio IF 1st Hor. sweep B.0

Antenna input

Tl5

T18

T17

TI7

TI7

TI9

TII

T12

T13

T14

T2I T16

TI

RT0-053

RTP-066

RLD-010

RT0-076

RKT -009

RLT -004

ETD-007

RTL-081

RTL-082

RTL-083

RTL-089

RTL-090 RTM-003

RLA-031

MISCELLANEOUS


RI

Centering ring and

support assernbly

Selenium rectifier

Head end unit-R-F

RAX-025

RER -003

RJX-023






V6 6AU6 Vid. Det. gi Clipper Rect.

TV712AU7 Video Limiter ii Amp.


V10 6V6GT/G Vert. Sweep Output

V11 6SN7GT Phase Inverter Id Clipper

V12 6SN7 Hot'. AFC 81 Sweep Gen.




V16 5U4G Power Rectifier (II.V.)

VI7 6AU6 Audio IF Amplifier

V18 6SH7 Audio FM Limiter

V19 6AQ7GT Audio FM Disc. &E Amp,

V21 5Y3GT Power Rectifier (L. V,,)


TEST CONDITIONS

DC Measurements taken on a 20,000

ohm per volt meter.




Line voltage 117V.

Values listed may have a tolerance of

+20%.


1/2 meg ohm resistor.

@I AC voltages.


34

ANEMIA TEN•w.M. MI6

PRAWN 114.1

SECCM70/TT 1110TTOWI—.

FAIMSCRold TRAW

W ri....5.10 OO IF COL

2110 A0040 LE CO&

1.104.011E2

PLATE COWRY TRIMMER

VERTICAL 1.111FARITY 1.15

4M.5/

AIN VCE0if Twos

•

W0VEIE01 , TRAMS

ser2r4

OIS wœOM MANS

07

S 0CfreFERLIAUS;

TRY

5. 0.0•61 SELECTOR

TOP VIEW

TIS VERT. OUTPUT

TRAMS

YERTOS. 5.2E

MACKIN& OSC&LATOR

WIANSFONWEN

7101/120ITTIL SUE CONTROL

L10

(7e dn›,

TERMINAL PUJO PE

OFF -M. 52

VERTICAL MOLD ROO

C5O.C60,

Ci02 C63 OC 46

ELEC.

V.

714 ....401

VS

'AU'

Ta NORMCwIAL WEEP TRANSFORWO

CONTRAST— . 1773

t-NOOMONTAL 164.0 Fun

WELD REMOVE0

ORIGNTNESS ROS


OMS OFf •AML.FIER

, L. CI

11.0 ,11- y MOWS o

Li •••

01 4716IF

lo

29

Li. WI MOT G50 100

lohis

Li U Ii or FT:CUSCO&

L25 fooF

SORTI 00213 • • • 2 • 7 SRI

Riœ

SOOT

VI V7 517

LG

111,••

VICEOCAIIMER-S(T TRAP

a 1 1 telswooi

/Zee

SAW R103 J_Ci3 2.11

C7

4710AF

A.2.4 5•AF


The following changes were mode in production to improve

audio frequency response, and to insure against excessive

bass response causing low frequency rumble when playing

the phonograph and radio.

A. TELEVISION AUDIO RESPONSE:

0) C114 at the television volume control was changed

522 ¡AUG

1.7 PAPLWIER

67 TOCO M Tm

SEE AUDIO AND RADIO POWER CHASSIS, PAGE 102.

42. --nisofttoosit

C22 C20

CA• ;COME

121 L • -e•V•

33516

12.1L0

SIl leek(0.,

- I I000I5I'Y-"' Ci•

2•6

VIO IMG-G76

SWEEP OUTPUT

1 Mr IRO &AUG 115/17

.-F A./PUFFER LISTER C4111

from 1000 mmfd. to 470 mmfd.

Is) C135 in the rodio receiver chassis television audio

input circuit was changed from 470 mmfd. to 1000 mmfd.

It is recommended that the above changes be mode to all

receivers which have not been modified. Note that no ad-

ditional components are necessary since they are inter-

changed.

00*

-EALS

°VECTOR

250V

el?

v7A MAU]

III0E0 •AIPLI

-J

ca

VOS 1- QM),

VIDEO AWL, 7 LOS

C.09 2.7K .05100

6.6

2 •

0 COI

.17 OCTAL RECEPTACLE

840 VO 2254

PICTURE TUSE

EXTLI:ouNNAL017

COON

DEFLECTION

ei›J.

0

• RESISTOR R1106 EITHER SmOITTIO OUT

OR LEFT re THE CIRCUIT WHEN TIE CENTERMG OF ENE VERTICAL NOLO CONTROL Rif IS CRECRED AT ERE FACTORY.

— RESISTOR 0113 MAT BE Rto0,60 FROM T./ECU/COI T AT /NE FACTORY WHEN THE CENTERING Of TIE VERTICAL SIZE CONTROL RN IS CREME°

B. RADIO AND PHONOGRAPH RESPONSE:

a) R39 was removed from the Radio Bass Control circuit..

Is) Removal of R39 disconnected C82, C83, and C84 from

the remainder of the circuit. These capacitors remain in the

chassis and become ineffective. The schematic diagram

shows R39 dotted, representing early production.

35

901, 910 ELECTROLYTIC CONDENSERS


C9IA, 5

C37, 2(2

C42A,

C203

C204A

C2O4B

0205,6

C35 CI98

C201A

C2OLB C76 C148

C149 C71

C72

C73

C78

C131

C63, 80

C58,9

C79

C160

C153, 6

15 rnfd. , 350V

30 mfd. , 250V

, C, ID; C107A,B, C.»

I72A, 13. C, D. 4Ornad.

350V, 30mfd., 350V.

lOmfd. ,350V, 50mfd

50V 100 infd. , 25V

30 told. , 25V

30 mfd., 100V .5 ohme @l5kc., 3V

1 ohm• @ 60 cy. 3V

200 mfd., 25V

30 mfd., 450V

90 rnfd. , 450V

200-250 rot-rd. 280-380 mrnf.

475-575 mmf. ..trip

45-80 mrrif.

475-575 mmf.

280-380 mmf.

34-70 mmf.

2-20 mmf; •trip

4-50 mmf. 34 -70mmr.

3-30 nun!. 80-130mre

3-30 mmf., mica

Air for TV Tuning

3-30 mmf., air

RCE

RCE-009

RCE-058 RCE-060

RCE-061

RCE-061

RCE-062

RCE-063

RCE-064 RCE-072

RCE-072

RCX-016 RCX-016

RCX-016

RCX-022

RCX-022 RCX-022

RCX-022

RC

RCX-023

RCX-024

RCY-011

RCY-015

RCY

-062

X-022

-0 17

CONTROLS


Hor. Hold

Vert.

Vert.

Vert.

Hor. Lin. Hor. Lin.

Vert.

Volume.

Brightne•ii,

Contra

Focue,

Hor. phase

Hoc. centering

1K meg. bleeder

500 ohm•,

1500 ohms, 150 ohm.,

ohm..

500K

Hold 1 meg

Size 2 meg

Lin. 5K

NI IK ohms

1/2&3 -250K

centering 20 ohma

2 meg.

5K

•t, 5K

6 meg.

del, bal.,

20 ohm., SPECIAL

w. w.

ohm•

41,4

1K

4W

Volt.

R37

R49

R50

R45

R212

R209, I

R44

R117

R12

R83

R161

R30

R2I8

R245, R159

R204 RI01, 2

R85

RRC-067

RRC-068

RRC-069

RRC -070

RRC-072

RR C-073 RRC-071

RRC-064

RRC-065

RRC-065

RRC-066

RRC-020

RRC-071

RRN-005 RRW-021

RRW -022

2 RRW-023

RRW -024

26kv. anode

6W w. w.

5W w.w. 6W w.w.

6W w. w. ,_61$

COILS

REF. MO DESCRIPTION PART NO.

L2

L3

L4

1_6, P9

L6, P9

1,

1.3

L9

1,12

1.13

114

LI 5

1,17

LI 8

L21,24

L22 L33

L35, 6„

1.200,1

LI 1

L20

L23

L37

L38

1.203

'TV Antenna input

TV oric. V2B, cathode

Vid. del. series peaking

Cabinet back and loop

Loop board-Ant, loop

and plug a•sembly

V20 ch. RF pl. SW1&Z baad

TM RF plate choke

V20 RF pl. dummy load

V21 Osc e.w. loading

"O.c" B -Band shunt

Cathode choke (FM)

Vid, amp. series peak'g

Vid, del. series peaking

TV RF VI, cathode

Choke FM band, 2 oec.

Vid. amp. shunt peaking

Cony. e. w. input load'g

40,1, 2, 3, 4, 5, 204

Choke filament

Ch. Radio pwr sup. tilts ,

Radio osc. V2I plate

Hor. cath.(hor. freq con

FM 1st IF plate peaking

Wave trap, 21.9 mc

(TV 4th IF) Wave trap, 21.9 mc

(TV diode detector)

Hor. size

roll

RLF -009

PLI-019 Fl LI-009

RAB -065 (901 only)

RAB -066 (910 only)

RLB -008

RLB -010

R LB-009

RLC-015

RLC-016

R LB -007

PLI -045

PLI-047

R LI-003

RLA-011

PLI -046

R LC-017

R LF -007

R LF -011

R LP-006

R LI-055

RLP-005

RLW -003

R LW-002

RI.M-012

TRANSFORMERS


Vert. Output

Hor Output

Power 60 cycles Audio Output

T8

T202

T201

T13

RT0-043

RT0-042

RTP

RT0-041

-055



TRANSFORMERS


Yoke

Ant. broadcaet tun.

FM RF & converter

RF broadcast tun.

FM oecillator

Oec. broadcast tun.

FM discriminator

TV audio disc.

Radio FM & AM let

IF. Radio FM, AM 2d IF

Radio FM, AM 3d IF

TV IF let

TV IF 2nd

TV IF 3rd

TV IF 4th

TV diode del. IF

Vert, sweep gen.

TV Audio IF

Hor. AFC phase del. Rad power 60 cy.

L202

TI7

T16,18

TI4

T37 TI5

T36

T 10

T19

T33

T35

T1

T2

T3 T4

T5

T9

T11

T6 T200

RLD-003

RLA-009

RLB-005

RLB-006

RLC -013

RLC-014

RTD-001

RTD-003

RTL-017

RTL-022

RTL-045

RTL-065

RTL-066

RTL-067 RTL-068

RTL -069

RTL-070

RTL-071

RTM-002

RTP-054

(coil)

(tuner coil)

(coil)

(coil)

(coil)

MISCELLANEOUS


T16, 8

T37 Tuner vane for FM

Tuner vane for FM

Televittion-R-F headend

Loudspeaker -10" PM Cable & yoke assy

Speaker cable asey.

RMM-010

RMM-011

RSX-0I 5

OOP- 1057(deluxe)

RWX-0124Model 910 RW X-014(Model

910)



V25 6SV7 Radio AM Det-FM Limiter V6 6AC7 4th Video IF Amplifier

V7 6H6 Video det. -OC. Restorer


VIO 6SH7 Clipper

V17 6SG7 Audio IF V23 6SG7 Radio let IF Amplifier V29 6V6 Audio Output Vil 6SN7 Hor.,BiVer Sweep Amp.

512 MILI Her', Phew dome.«I Vow. Sync. Amplifier.

V13 6SL7 H. Phase Det. -DC Amp.

V20 6AG5 RF Amplifier V26 6AQ7 FM disc.-Audio cath.follow'g V14 6SN7 Hor. Sweep Generator

V15 6SN7 Phase Inv. -Cath. Follower V21 6A1(.5 Radio Oscillator V33 6SC7 Phono Preamplifier

V16 6L6 Vert. Sweep Output

V18 6SV7 Audio Limiter

V19 6H6 Audio Discriminator

V22 6AK5 Radio Converter

V24 6SV7 Radio 2nd IF Amplifier

V27 6SL7GT Audio Amplifier

V26 6V6 Audio Output

V30 6V6 Audio Output

V3I 6V6 Audio Output

V32 6AL7 Tuning Indicator

* Irrvm through 3 meg. T 10V scale

$82.5V scale

@ AC Voltage

Unless noted all readings are DC taken


switch at channel No.1, contrast at

maximum and brilliance at minimum.

When making VTVM measurements,

a 3 megohm resistor is connected in

series for isolation.

1

1

36

901, 910

wromad.

4•1012.

Mt MI0 Inn

•••/.1611.. Fee

00/6/0161•6 el°

0137

•

11.

11:0«CTha /Ye«,

CeleflUt

Mae..

el•Ce0 TWO«

1=4\ IILLICTO•

4 \ VOW«

TON! •

SCHEMATIC OF POWER CHASSIS

YO 10.

001/0

lee •6010 • /EL el 0.0..entº •••• 04•Aol

.00100C 04 MAW GIUSIe

PO•l• C61663

4L,

{

21_

-t ytte

Lr. 6100Y .11,110/011

.06 0..

.41o.

to I 0000.6 it« 100,..L.

eV006.1101/1.00/6 COT••

060

r

“Mg.. 7.1

To V

GL•

•t

0001•17...

ate 101/e1«.0.

.0,

'1 COL OP MEL

P' l

37

10C101, 10C102, 1011, 1014, 1015, 1016 ELECTROLYTIC CONDENSERS


C297,3,

C346

C372,1,

C299 C383,4 C257,8,406.

C2I3

C225,6

58. lOrnf,350V; rnf, 100V;10Orn1,50

I mf., 50V

3,4. 150mf,

30 rnf, 450V

60 rof, 350V

10 rnf/450;

300; 10/150V

Trimmers

50

V

150V

40/

trap

RCE-089

RCE-090 RCE-091

RCE-092

RCE-094

RCE-I00

RCY-059

RCY-060 Tuning control

High channel

CONTROLS


Contra•t

Vert. Height

Focus

Focu•

Volume

Volume

Brightnee•

Brightne••,

Hor.

Vert.

Hor.

Vert. Her. Hold

75 ohms,

1700 ohms,

4.6 ohms

2 meg •

Lin. 2K, 2W

3 meg

100K ••

•

500K ••

•

500K,

500K •

Drive 25K, 1/2 Hold 100K •

Hold *

Hold 100K AS

I25K ••

SPECIAL

W

R.331 R300

R302

R347

R347

R353

R353

R227

R227

R402

R.298

R.32I

R321

R2913

R373, 4

R377

R372

RRC-124

RRC-095

RRC-096

RRC-099

RRC-I26

RRC-099

RRC-I26

RRC-109

RRC-124

RRC-I08

RRC-125 RRC-125

RRC-I34

RRC-I34

RRW-041

RRW-045

RRW-048

Globar

5W, ww

w. w.

COILS

REF. 110.1 DESCRIPTION PART HO.

L201

L202

L203,

L209, L255,

L246,

L247,

L249,

L245

L256, L260

L269

L314

L3I5

L3I6

L343

L371,

L258

Input Cathode 1.4 rnic

207. RF Input

205. Cony. plate

268. Vid. comp. 110mi

208. 2nd IF plate 248. Vid. det. a•ey

204, 248. Choke P.F.

3Irnic

IF

257. Video comp.

Video peaking

Trap coil 1. 5 mc

Hor. si•e

Linearity

Hor. o•c.

Focus 2, 3,4,5,244, 350.

Heater, 2 mic.

Vid. comp. choke

RLF-023

RLI-033

ALI-083

RLP-016

RL1-093 RU-110

RLX-029

RLF-024

RLI-096

RLI-038

RLI-108

RL1-100

RLD-019

RLD-020

RLC-091 RLF-026

RU-085

RLI-109

TRANSFORMERS

DESCRIPTION REF. NO, PART NCI.

Vert, Output

Hor. Output

Power

Audso Output **

Yoke

Audio Output •

Audio IF let

Ratio detector

T291 T3I2

T342

D3I2

T342

T340

T141

RT0-064

RT0-076

RT0-062

RLD-013

RT0-066

RL1-097

RTD-008

MISCELLANEOUS

REF. NCI DESCRIPTION PART NO.

X37I,2

B37I

5341

LS5

LS5

Selenium rectifier 250

Ion trap-(10BP4)

picture tube IOTI

R-F head end •• R-F head end* Thermal cutout

Switch-focus

4" PM (10T1,4, 5,6)

10" (or(I0C101, 2)

ma. RER -004

RET-003

RJX-036

RIX-038 RSR-002

RSW -066

UOP-487

UOP-1047

• 10C101,102 •• 10T1,4,5,6

VI 6AU6 let RF Amplifier

V2 6BC5 2nd RF Amplifier

( 6AG5 in initial production; replace with 6BC5)

V4 6BC5 1st IF Amplifier

(6AG5 in iagibo5luction; replace

V5 6BC5 2nd IF Amplifier

(6AG5 in initial production; replace with 6BC5)

V6 6BC5 3rd IF Amplifier

( 6AG5 in initial production; replace with 6CB5)

V8 12AT7 Video Amplifier

I V10 12SN7GT Vertical Multivibrator & Sweep Output

V13 19BG6 flor. Sweep Output


V15 25W4GT Damping Tube

V16 6AU6 Audio Limiter & Amp.

V17 25W4GT Damping Tube

V18 6SQ7 Audio Amplifier


V20 6SL7GT Sync. Amp. & Clipper

V21 12SN7GT Hor. Ose. & AFC



TEST CONDITIONS

Voltage Measured:

Meter 20,000 ohm/volt. Line volts - 117V, 60 cycles.

All controls set for normal sweeps, focus and brightness.



t Use 2.5V range. * Voltages vary more than +20%.


Short capacitors C373 and 374.

Short pin 3 of V15 to B-. INF - denotes infinite resistance.

Turn the following controls full:

Focus Contrast

Brightness

Vert. Hold

Vert. Linearity

Vert. Size Values listed may have a tolerance.

1

38

1

1


— — — —

0204 OK 12 1224 1222 1224 1225 1227

70 5 6 99 *0

JerL 228 V 1 641.16 Isy RF

0 13

5201* C20,--150 • I 13276 33WEG

maD04* •wv.vv. INPuT 1207 300 oetis R217

C203 C226 01 ce°2

C225 1 IF 680

:L2

2-6 INCL.

7 R201 .000

331£0

150 L215-7 - 34 1235 er 1237

4203

1229

233

.00 III 6R2r9 6 e,,,,

cr205

2

gr12311 à

L_

117V 60-

0205 0206

5.16 5..6

% 216

52016

1204

6

. C207 680 me.

C2I II o

33

C221 800

0202 270

100

*DJ CH TRAP V JU 47 25 WC I CONV l2AT7 2511

02013 220

BOO

33--1 C224 3.3

6AG 5C) 2NoR F

e°7 V2 ioo

AUDIO CARRIER TRAP ADJ CH TRAP

V4 •1 2 5 hiC V5 47 25 MC V6 1 IL 2No 1F iti 3,40 IF ST 1 F 64050 6AG50 uc„, 6AG5 ®

127° Pre 1.808 22 1236 G239

R2135 2281

8218 .54F

C255

1.248

R247

471(

1242

5

R21118 61116

6242

6255 __ 47 G240 1250

5000 1241 5000

5

6.246

0240 68*

0230

•7

0221 47

ii-G237 3 •

1 9. w I

1:L247 -

1 7, L

C 5000-.3-£

5000 _-C238

10C101, 10C102, 1011, 1014, 1015, 1016 I V8A

CET Isr VIDEO IN64 v2 I2AT 7

1

21 1249

)0274 9...„ 470

5000

4)°°°

R265

12 165

72,

R229 226

6276 221.1EG

470

1262 1263 1264 12651266 t 267 215

i2141 gff

3 4 5 6 7 e 9

520.0 0711 C212 .06 r 12

21

TUNING 4(2.3 CONTROL

0203 1208 BOO

2 G223 5

V38 OSC 1/212AT 7

0287 470A

EMILY PRCOUCTION IF TRAP

NEIK, EN) GHASSiS

1256 5000 +135V

•

4 Kzedc TRAP

0278 470K

6290 RIK 2w

V88 2 NoVIDEO 1/2 2417

A - 1267

10 HT — 1267

.05

6220 220

DCINY465ST°FeER V 9 'ICTUFE TUBE

1061,4, 10FR4, OR I OF R44

C269

10K 005 0267 4700 2w

à

• 0266 3.AEG

C270 .23AF

03._ 0292

13304 26 2K

811

11

0203 2274

0281 220K

einGHTNESS

023

lo

244

0227 2 IkrtG

CONTRAST CONTROL c, 5

I 5000

I

4 1 3'244

eszoo

837. 7.7(69+1

COT OW

• ''

1:5371 POWER

OPEN ON CHANNELS -6 1NCL

o NOTE 0330 SNORTED IF 0300 IS NU FOR 8E" LINEARITY

® ON LATE PROOUC 7ION • 6015 MAY BE I l'ED • 68C5 MUST BE USED TO

REPLACE A 6AGS.

C13791 50 R 364 20

1137? —VVVVYA

13717 55 n

4. 4

8372 ....2r,or 13114 —

6030 65*;

• .09 MI

+550V

0411 •70K

+135 V

7- C374

0375 • 70«

Ve9 V 10 V4 1/5 V6 V23 V e VI 62 63 21L6GT 056711 6465 64G5 6415 6406 12477 &Au* 6•65 12AT7

0373 • 9 44 • 3

75

c2r07

cziOn C373 • 5 1372 1373 1371 G376 1377 C378 1386_ 1387

5003 3000 I 50001 50001- 800 I Boor eoo C3439 BOOT

0374 19866G 1736751 6AL5 65L7GT 25VMG7 691.16 6913 1374 6607 75 2 7 7 • 7 8 8 7

¡C I. 47,N3 .1132233 a v22 V20 V15 VIA VI7 VII NOTE SEE VIN

NOTE CaPAC.704 vAL uES AFE 776e UNLESS SPECIFIED

1257 -73MF0 1304 C258-40" 3004 MI C406 ,0 ' 4306 de

C353(10700 3509 SO C334 30 • 150+16 1297- CO • 7SV

Q I 69

V23 64116 AMPLI

R 3*0 22 17EG

25+. Zyil

VERTICAL SWEEP GENERATOR

R293 82«

C258 _40

MF •

390

0308 396

1306

IO 701°: I

C296 0295 I

1000 00" VIOA 1/2 "12SN7GT

C309 470

I 0297 686

.0296 • 4.3 -6 NEG.

294 R266 100K

0390 6389

2913 125K

C397

.059F 1506 7501

309 700

BLUE V108 Lr294

1. 12SN7GT „

RED (C305T TK 5000

02 36,66 3oe

¿03134F 97

0014F

8300 •

GREEN

1301 .05

I c 302 02032

R306 2 76

C325 47

1299 0303 I 51(

1406 LINEARITY Ole

300 V.

0409 1122 .01111F

f. C392 . 220 •

6

I. _

V20 6SL7GT SYNC Amp a CLIPPE

V22 6AL5 ESC

4.250

V214 V2 - :2 SN7GT A FC

T

1 387 100 5C«

R 384 110E0

R3135 MEG

395 6e

R3116 1130K

391

is

V2IB ,a9k2 14- I2SN7GT

I-10R OSC

2 C400 c402 03138 s 4 70 MO IMEG 1

C 398 3900 R391 33K

/396 01 MF

C399 .05 Mr

C401 220

0393 77K

•4;321 F.000à

tie mc1,

• 4 •

•60e

UI6

Ku)

0396 338

C405 5000

c404_, 3900

0395 106

1403 1000

13402

180

,1

_c 3.

a356 VI3 IsK 198G6

OUTPUTHOR

R326

226

111397

IC11

C 326 .00229w 0330 470K

312

V14 1B3G T/ 8016 H V RECTIFIER

.3 399 L3+

327 MI? 20

LI-

13 ,5

r15 ,11_6117

42 A

#403 MOIL

1271

VI5 • 25W4GT

DAMPER

3 rie • 971ff

5000

400.196 13%. 7

C328 Mrr C339 174 0410 Ïs 4701. T 13•K

0354 220

C341

5

VI6 r - 6AU6

4 5..K. Ts4o LIMITER -AMPLI

FL. si a) • , r 3

OK

O

13

45 RC --- VI7

T34I :6AL5

111 :DETECTOR

0343

«u: 0345 226

c70.

355 13360 6000

270

32

7

1545 • 5000

C413 0341 0342

9000 100K 470K 6363 561(

1350 21/6

0346 2211

1349

002 MF

73376 39.4

VI8 V19 • C346 6S07 25L6GT

Isr AUDIO AUDIO OUTPUT

6

1348 0357 336

too>

37« VOLUME

347

1336 3000

1369 .103

G352 0356 •

0351 IT 3S2

4706 ne

0363 IOC*

0349 220K

G342 8355 5000 18CM

B..

--. G353 -00534,

1367 lis

210

Y342 0 155

RED

-6 C358.

IOMF

5341A COARSE FOCUS

t

01358

53415 0

RED 430

0359 L 343 820

R360 920

11377 1700 3W

68.14

»4 4

50

Kv

39 1

12C101, 12C102, 12C105, 1211 ELECTROLYTIC CONDENSERS


C299 C383,4 C257 C258 C406 CZ97 C354 C358 C346 C371 Z. 3, 4

C322 C396 C126 C327 C211 C386 C224,7 C237

C213

C225 6

30 mf., 450V 60 mf., 350V 10 mf. , 450V 40 mf. , 300V 10 mf. , 150V 10 mf. , 350V 50 mf., 100V 100 mf., 50V 1 mt., 50V 150 mt. , 150 V

SPECIAL .01 m f.

. 0022 mf., 1K V 500 mint. , NV 800-800 mmf. 450V, ceramic 3.3mmt..silver mica

9 mmf. ,silver mica TRIMMERS

RCE-092 RCE-094 RCE- 100 RCE-I00 RCE-I00 RCE-089 RCE-089 RCE-089 RCE-090 RCE-091

RCN-018

RCN-019 RCN-023 RCN-027 RCN-027 RCN-028 RCN-029

RCY-059

RCY- 060

Tuning control . 2-1 mmf. High channel trap . 7-7 mmf.

CONTROLS


Vert. Lin. 2K, 2W Height 3 meg. Hoc. Drive 25K. 1/2W Vert. Hold 100K Vert. Hold 100K Nor. Hold 100K Hoc. Hold

Volume 500K Volume 500K Volume Focue 100K Focus 110K Focus Brightness 500K

Brightness 500K Contrast 2 meg Contrast 2 meg

WIRE WOUND

R300 R302 R.402 R307 R309 A.329 A329

R366 R366 R366 R.365 R.365 R.365 R.230

R230 A.232 R.232

R.373,4 R377 R372

ARC-095 RAC-096 ARC -108 RAC-103 (12T1, C101, 21

RAC-125 (12C105) RAC-103(1M I2C101.4 RAC-125 (12C105)

ARC-104 (12T1) RRC122 (12C101, 4 ARC-123 (12C105) RRC-104 (12T1) ARC-122 (12C101, 2) ARC-123 (12C105) RAC-11042T1,12C301,2)

RAC-124 (12C105) ARC-110(12T1,12001, 4 RAC-124 (12C105)

RAW-041 FtRW-045 RAW -048

Global., 75 ohms IOW 1700 ohms. SW 4.6 ohms

COILS REF. NO, DESCRIPTION PART NO.

L201 1.202 L203,7 L204,48,

L205,9 Lzoa4EaF L245 L247,8 L255,68 L258 L256,7 L260 1269 L315 L3I6 L3I7 L344 L376

Input Cathode, 1.4 mic. RF input 49. RF ch. , 31 mic. for vid. det. a•s'y

Converter plate coil

IF coil Vid. det. ass'y Vid. comp. ch. , 165 mic. Choke vid. comp. 130 mic Vid, comp. ch., 165 mic. Vid. peaking Vid. trap, 4. 5 mc Hor, Lin. Nor, oscillator Width control Focus Filter reactor

RLF-023 RU-003 RLI-083

ALF-024 RLP-016 RLI-110 RLI-096 RLX-029 R11-093 RLI-109 RLI-038 RLI-108 RL1-100 RLD-020 It LC-091 RLD-018 RIS -028 RTL-096

TRANSFORMERS DESCRIPTION REF. NO. PART NO.

Vert. Output Hor. Output Audio Output Audio Output Audio IF 1st Yoke Ratio detector

T291 T312

T344 T340

T341

RT0-064 RT0-076 RT0-077

RT0-066 1I2C R1.1-097 RLD-013 RTD- 008

(12T1)

101, 102, /05)

V1 6AU6 1st RF Amplifier

V2 .6AG5 2nd RF Amplifier


V4 6AG5 1st IF Amplifier I

MISCELLANEOUS


Selenium rect. 250 ma. RER -004

R-F Head-end RJX-037

R-F Head-end RJX-038 (12C105-6)

Thermal cutout RSR -002

Switch-focus RSW -066

Detector-Germ. rtal 12465

Detector IN64

Speaker 12" PM uop_ 247 (12C101, 2, 5)

Speaker-5 1/4" PM UOP-577 (12T1)

V5 6AG5 2nd IF Amplifier

V6 6AG5 3rd IF Amplifier


V10 128N7 Vert. Mult. di Sweep Output


V16 6AU6 Audio Limiter di Amp.


V18 69Q7 Audio Amplifier

I V19 25L6GT Audio Output

V20 6SL7GT Sync. Amp. ta Clipper

V21 12SN7GT Hor. 08C. à AFC

V22 6AL5 AFC Discriirinator

TEST CONDITIONS Voltage Nleasioremeitt s:

VOLTAGE MEASUREMENT IN RESPECT 10 6-, METER 20K OHMS/VOLT LINE VOLTS II7V. ISO CYCLES

ALL CONTROLS SET FOR NORMAL SWEEPS • USE 2.5 VOLT RANGE. TTVOLTAGE VARY MORE THAN 24111. iAC VOLTAGE READING.

Resistance Measeumumes.

SNORT CAPACITORS C373 AMO C374. SHORT PIN 3 OF VIS TO IMF. DENOTES INFINITE RESISTANCE. TURN THE FOLLOWING CONTROLS FULL CLOCKWISE: FOCUS CONTROL, CONTRAST. BRIGHTNESS, VER - ICAL HOLD. VERTICAL SIZE, VERTICAL LINE AJITY.

VALUES LISTED MAY HAVE A TOLERANCE OF 2011.

04114 • 00 NOT MEASURE.

1

40

1

1 1 1

TOP VIEW

II

65618T

4507

6811

For Production Changes, see Page 109. I _______ _ —___ ____ we uri I R204 V 3A : I

7;22 1.11f, L224 Le25 „Pe 1227 WK.228 VI tiCle•TV7 L I I L226

I R220 6AU 6 IsT R F 2a I I czzoi

I 2 3 14 43 6 17 1110 o 81213 470 •

5 e

EL 209 i

I--

I ANTENNA INPUT 300 OHis

%2020 R216 ,230‘

1314EG

1207

R217 1201 3314E6

62251

j coo 2-6 INCL. - 1234 1235 pr 1237

1233

21003 4 I K 5 6 6219

33028 19

R61•1238 d

6205 6206 11-15/Wo-N/N/V--

5 11( SIS

216

L 204

6224 33

I 6AG 41)

7 2No R F • C207 680 R207

V2 lung 100

600

1.262 1263 1264 12851266 1. 267

por ye pre rer

2 3 4 5 6 7 8 9 10 12

11211 /OK 6212 12

215

TUNING 4 C213 CONTROL

13203 C208 Seit 800

2

2

C223 L5

V 38

OSC

I2AT 7

L_ 52026 _ S2020 oNan oN CHANNELS

60-

1371

ale 1372 A«

6407 1-+220

53 7, THERMAL

CUT OUT

L3 POWER 0ER

6371 150e6F

6372 o5OIN

"4.7î 2371 4.2605

1372 — CM 601.

R208 220

6214 1500

R210 39«

R2N

AUDIO CARRIER TRAP

41 25 WC V4

Iv I F 6AG5® uwecgs•

R285 2211

62e54e

1245

6

R24

4711

6242 5000

1.236

111

8288 6111«

ADJ CH TRAP 47 25 MC

V5 4 V6 2No IF 360 IF

6AG5 e a°. eC222•2 6AG5®

C239

E1246

242 6136

R255 47 —C240

— 5000 6241 5000

R240 66«

R250

47

6221 47

6250

3

Y 1

DE.

I N64

r i • I C237

9

e1247

238

C266

— 0—I

L R274 470

6247 re1 5000

23

ti I - I GREEN

1248 6273 1236

I — H I 02

V8A

IsT VIDEO

v2 I2AT 7

1249

31U14

11265 3600

1256 165 uH

R233 6800

R276 22 MEG

6229 22K

2

1.2

12C101, 12C102, 12C105, 1211 V8 B

2 NoVIDEO

1/2 I2AT 7

C245 GREEN • 1268 7 ;

1040

8260 8K 2w

686• 0 1260 110 1.81 RED

R275 1.518

\r-

• • C257 1.267 - IMF .05

RED

1257 165 116

72e-

R236

Y 2 V 9

DC RESTORER PICTURE TUBE

IN65 I2KP4A

6269

II-RAF

OK .005 R267 • 700 2w

228 220

R278 470K

Igleoele 5 3

GREEN 0312 0292 e

5504 2 III

8f1

11

11283 22x

C270 _i_ 2MF

R26I 220K

IWAGHTNESS

470

R287 I 47011

EARLY PRODUCTION I LE TRAP

z 640330

R232

500K

lO

11230 2 MEG

CC•ITRAST CONTROL c 1.5

I 5000

#382 5

MEG

y ee 135 V

C279 5000

• egm ire.1"CFÓRIlenEkSir2 LINEARITY

ED ON LATE PROOUCTION A 68C5 MAY 86 USED WHEN REPLACING A 6465

USE A 6565.

L 376

5511

6384 6664F

6331 .0514F

R364

220

+ 250 V

R411 6373 470« 150/0

• 135 V

C374

150

R375 • 70K

VIS v10 V1 VS Ve V23 Ve VI v2 V3 251601 QSN7GT 6605 6665 6405 6AU6 12417 66.16 6AG3 WAT7

R373 4 9 44 3 • 3

75 C408 220 c 375 1375 1372 1573 13D

6376 6377 63 6396 63137 _ 6369

50001 50001 50001 50001 800 eoo I 800 600

#374 1913866 256701 6515 651.701 25•467 6AU6 6515 1374 6507 73 2 7 7 4 7 6 R 7 3 4

640.7.1 Vex_ , "3 621 v22 620 VIS VI7 VIO

220 NOTE SEE VI6

NOTE CAPACITOR on/WEAR( mow uALESS SPEOFIED

C257.064E0 t50v • C25440' 3006 BB 640610 450V ao«

6356 Klow0 350v In C3S4 50 " 150 V • 6257-00" 75V

Q I V9

NOTE FOR 126101 126102

126101

C348

50▪ 00 1 votuee CCOITROL

BASS COMP 6378 I CNCIAT 6379 66K 1 6356

01 î 5000

VERTICAL SWEEP

GENERATOR

R293

6306

390

R301,

VIOA

1/2 -12SN7G

6305 470

*6306 — 62K 001

1.12 C 302 I 002

SI s 6258_ IN 4028 MF •

MF

R390

6296 R295 I- --11AAAaVe

1000 100K

4

6297 eK

6294 10011

601.0

R389

,F 6296 6 4 31.1EG

6294

6307 125K

Il

R381

C390 02 ear

R 380 22 16EG

C39

Sow

11309 470

6303

vice 4 291 GREEN

2SN7GT 7s. • Iv .n 131.16K

RED

6299

316EG .0365 •.'r2300 302 C305 •

106•• 2K

en_ LINEARITY

R303 1.5K

R268

it

630 05

302 D2LIF

R306 276

I"-632 5 47

8

\.„11315 12«

350 V

-_L 6406 1010

290v

130K 15011

R409 6322 DIME

F. 6392 . 220 • •••

Ii

•• 1

V20

6SL7GT

SYNC AMP

a CL V22

6AL5 DISC

250v

#4eK3

C. 4

V214

- 12 SN 7GT

A FC

3 387 00 150K

#384 mac,

R385 168

395 680

11386 1806

R388 IIAEG

C. 398 3900 R39, 3311

C396 — 01

MF

C399 05 F

3

V218

2P),2 t4" I2SN7GT

HOR OSC

1 2 6400 C4CQ s 470 1800

_ o

R394 o •

6401 220

R393 27K

lie. 14_0_0

6811

E60

flb

\ go.

L 316

HOLD

NOK

R396 33K

6405 5000

C404_ 3900

R395 «.. 10K C403 eoo

t330 — 6

Re l \M3

198G6

OUT PUT

11326

2211 5

1 6412 22

R397 '-IMEG

R402 25K

NoN DRIVE

6 326 .0022611 R330 470K

C411

42

R403

IL

13,2

211

V14

183G T/ 8016

RV RECTIFIER

1313 140R L. /a,

632 _T_ R410 1M TC335

470 1W T 11.1f

32 e'e r 500 .

1317

4 399 3.3K

er"--

VI5

25W4GT

DAMPER

3 'at'

TH çee_ILT

4 ANN

V23 6AU6 AMPLI

11354 220

6341 5000

5

6 I

9 R361 1 39K 68

VI6

6 6AU6 • 564

134 LIMITER - AMPLI c

4—

340

g, I • I

331 I

5

634

5000 :36-Sr 1S6s ,cmc 56K c413 R341

1006

r -

11342

470K

L350 -5.-e- C357 -I- 5000

10

•5 MC

1341

01

VI7

6AL5

DETECTOR

631

120

343

7

It C342 elf

R345 22K

MF

E

R350 Le 1K i

270 R346 2211

6349

.002 14F

C3411

5000.

39K

VI8 R376

6SQ.7 25L6GT

1sT AUDIO AUDIO OUTPUT

6 6366 5000

4-1 02346 e 4

R357 e 33«

R365

• 6356

5000

O 560E vOLLIAN

C359 — 603

• •

6352 R356

1000 01 MF

z C353 005MF

3

R351 #332 .70K 100

#349 22O8

U020—

RI

rew

IMF

C3135

5000

+6358.

1CHHF

156

f 1300.

53416 COARSE FOCUS

117 R ese

6E0 11 430

6359 1344 e20 ae

11360 820

11377 1700 3 ‘,/

OR

S3418

00

10 • V

12C101, 12C108, 12C109, 1213, 1214 ELECTROLYTIC CONDENSERS


C309

C454

C423

C4I0

C3I0

C272

C355

C379

C45I

C452

C453

C2I 2

C219 C220

10 mf. , 350V

50 inf. , 100V

100 mf., 75V

I mt. , 50 V

30 inf., 450V

10 mf., 450V

40 mf . , 300V

10 mt., 150 V

300 mf. , 150V

125 mf. , 350V

80 mf . , 300V

TRIMMERS

RCE-089

RCE-089

RCE-089

RCE-090

RCE-092

RCE- 100

RCE- 100

RCE- 100

RCE- 110

RCE- III

RCE- 112

RCY-059

RCY -060 Tuning capacitor

III channel trap

. 7-7. 0 mrnf.

CONTROLS


Volume

Brightness 500E

Contrast

Flor Hold 125K

Nor. Size

Vert. Hold 100K

Vert. Size

Vert. Lin. 4K, 2w.

Height 3 meg

Hor. Drive 25K, 1/2w.

Volume 500K

Volume 500K

Contrast 2 meg

Contrast 2 meg

Focus 100K

WIREWOUND

R421

R365

R305

R3I1

R308

R369

R262

R262

R412

R4I 3

10276

R454, 5

10427

R451

R455

RRC-I30

RRC-135

RRC-135

ARC-127

RRC-096

RRC- 108

RRC-I28

RRC-131

RRC - 128

ARC- 131

RRC-I30

RRW -041

FtRW -045

RRW -048

RRW -054

Globar, 75 ohms, 10 w.

1700 ohms, 3 w.

4.6 ohms 5 w.

350 ohms, 0.6 amp. ,

Globar

COILS


L201,2)2

L203

L218

L218, í

L251, í

L252,

L254,

L259

L260

L261

L263,

L264

L351

L352

L353

L401

L45I

L211,2 i

RF input

Input

Cathode ch., 1.4 mic.

26, 7. Cony. plate

65. IF with trap

153. IF Coil !SS. Vid Det Ass'y

Vid. comp. choke 165 mic

4.5 rnc vid. trap

Vid. peaking

;57. Vid comp. 165mic. Vid, comp. choke

Hor. o•cillator

Hor. Lin. control

Width control

Focus Filter reactor

RF Headend complete

4, 5,6. RF choke, 31

mic. for Vid. del.

RLI-083

RLF-023

RLI-003

RLP-016

RU-I23

RLI-110

RLX-029

ALI-093

RU-I00

RLI-108

ALI-038

RLI-109

RLC-091

RLD-020

RLD-014

RLF -028

RTL-096

RJ X-039

RLF-024

TRANSFORMERS


Vert, Output

Hor. Output

Power

Audio Output

Yoke

Audio Output • Audio IF 1st

Ratio detector

•I2C107, 108, 109

T301

T351

T403

0301

T404

T401

T402

RT0-064

RT0-076

RT0-081

RLD-013

RT0-086

RLI-097

RTD-008

( 12T3, T4)

MISCELLANEOUS

REP. NO, DESCRIPTION PART NO,

X45I, 2

B45I

Y2

Y I

Rectifier -300ma,Seleriurn

Thermal cutout

Switch-Focus

Detector -Germanium

crystal Detector Germanium

crystal

Speaker-12" PM

Speaker-51/4" PM

RER -009

RSR-002

RSW -066

IN65

IN64

SIZOOD-2

S5270-7

PRODUCTION CHANGES MODELS 12T3, 12T4,

12C107, 12C108 AND 12C109

1. Early production models did not incorporate the 41.25

mc trap on IF coil L265.

2. Early models used a high gm 6AG5 tube in place of a

6BC5 for the second RF amplifier V2. When it is necessary

to replace this 6AG5, o 68C5 tube should be used for re-

placement.

3. Some of the receivers use for tie crystal diode Y2 the

Type 1H48 Instead of 1H65 which does not change the per-

formonce of the receiver.

4. In order to improve electrical performance of the Vertical

Hold Potentiometer, R305, the value was increased from

100,000 ohm (RRC-129) to 125,000 ohm and the new catalog

is RRC-136.

5. Because of procurement difficulites, the capacitor C451

will be replaced by two 150 mf (RCE-091) capacitors; the

capacitor C452 will be replaced by two 60 mf (RCE-094)

capac itors.

Vi 6AU6 1st RF Amplifier

V2 6BC5 2nd RF Amplifiel V7 12AT7 Video Amplifier


V4 6BC5 1st Video IF Amplifier

V5 6BC5 2nd Video IF Amplifier

V6 6BC5 3rd Video IF Amplifier

V9 12SN7GT Vert. Sweep Gen. Output


VII 6AL5 Horizontal Discriminator

V12 12SN7GT Hor. AFC & Sweep Osc.


V15 25W4GT Hor. Damping Tube

VI6 6AU6 Audio IF Amplifier

V17 6AU6 Audio IF Limiter Amp.

V14 1B3GT/8016 H. V. Rectifier VI9 6SQ7 Audio Amplifier


TEST CONDITIONS Voltage Aleaseeemetsts:

VOLTAGE MEASUREMENTS IN RESPECT TO METER 20K 01-111/VOLT LINE VOLTS 117Y, 80 CPU-ES.

ALL CONTROLS SET FOR NORMAL SWEEPS. • USE 2.5 VOLT RANGE. ttVOLTAGE VARY MORE THAN 20%. @ AC VOLTAGE READING

Resistance Measureenterts:

SHORT PIN 3 OF VIS TO IS-. INF. DENOTES INFINITE RESISTANCE. TURN THE FOLLOWING CONTROLS FULL CLOCKWISE: FOCUS CONTROL, CONTRAST, BRIGHTNESS, VERT-ICAL HOLD, VERTICAL SIZE, VERTICAL LINEARITY

VALUES LISTED MAY HAVE A TOLERANCE OF 20%. DI4M- DO NOT MEASURE.

1

1

42

SECONOAR TOP

PRIMARY BOTTOM

1

1

ST AUCX0 F TRANS

1260

41

1254

SHIELD

CHANNEL. 11 TRAP

0 0 (TOP2r9 L25

C220 C219 1253 (BOTTOM)

Ce(-1251 (TOP)

L226 (TOP)

là-f72,« M I

TOP VIEW

2422 2451

4607

ALS

EiaPPOM VIEW

eft!

444

Il 477

3 .4 5 6 7 70 III 5202A

ruŒ-

6 520201

_10202-150 2-6 iNCL 1214 1.215 jur 1216

S20213

0212 0213

5.K 5.K

— ec% î

1211

1219 1220 1221 L222 1223

PI ere e

4 [210 VI 6AU6 IsT RF

1203 ozo5

16110"n

1224 1225

2 3 4 5 6750101 2

TUNING c212 OK 0215 G 211

CONTROL

5202C L.

1174

1451 g,

C209 33

0201 G214 56K 500

* S2020 OPEN ON CHANNELS 2-6 iNcL

0451 TNERmAL

CuT OUT

1:5POME-451n

0451 0451 4 6 2457

0213

V 3A CONV ‘12AT 7

ADJ TRAP 4725 M-C _, I

L227 e0218 22 I

C211,

V4 IsT IF 6B C5

0251 5MF

eiO TE gf09.01TOR VALUES ARE mmF UNLESS SPECdoED

C272-10 504 de C355-40MF 3004 C379- tOMF 4504 a

C454-20 MF 3004 II C423-50MF 1504 • 0309.10061F 75V

1451

300 TaF 2654 55 It

2451 7e

8452

220

C454

20MF

420 49 44 45 Ve vi6 47 vi 42 43 231561 29047 ea5 11305 6E105 64U6 1202 64116 9805 12077

R454 9 4 4 75 G457 03 i z ell I d £

n zoo cese 1452 1453 1454 1455 0459 C460 0461 C22I C GS23.. C224

1- 5001 5mo/ scooT BOU T too POO

8455 195660 12911702 6615 6SL7GT 259461 MU& GALS 1456 6607 75 2 7 7 7 8 8 7

V V V15 v17 :,-;-, VIS V19 II 10 i

„:NOTE SEE V17

NOTE FOR 120107. 12CI08 120109

BASS cm. 8414 CIRCUIT 0416 411111

.0114Fi

R413 O 51•16 VOLUME CONTROL

0415 j s000

C255

5

R254 MIK

V16 6AU6 AMPLI

ADJ EN TRAP 4725 MC

V5 V6 2No IF 380 IF 68C5 1213,c22280 68C5

C259

351 02 I-

6351 2.2 NEG.

026 5000

R258 PICTURE, 470K CONTROL

C261

8263 1.5MEG

R353 IMEG 0354

C 353 • 220 •

VIO 6SL7GT SYNC Aé/P &CL •

VI 1 6AL5 DISC.

— C352 05MF

12C101, 12C108, 12C109, 1213, 1214

Y 1 V 7A V 7B DET. 191 VIDEC 2 NoVIDEO IN64 ve 12AT 7 1/2 I2AT7 — — 1

1 I GREEN

L255 C2661 1259 z 7,.crw 7 .• I -H OE

R264 470

C266 -L- '• R265 5000 3600

1257 165

R2 4700 2W

DC. YRÎSTORER PICTURE TUBE V 8

1N65 12KP4A

0275

lAr

C276

8268 22 MEG

8270 1eK 2w

0303 _if 470 i C3 5 030 5)

V ERTICAL SWEEP V9 A I 1000 100K ILUE k m , GENERATOR Et OUTPUT y7.12sN7G 2 V9 B GREEN

i 11 12SN7GT .'« C 75.IL.

0302 o R307 =op A S. Mt 39K 6 4 3MEG R * 030 REO

R304 4700 T1J NO C304 II 68K

R301 • 70 306 + -9. °D 9. 02x sC301 - 8312

• 00, G302 - 00 I 514

E : 1 602 72 Z loe G3013 R311 up 11F 03MF 4 lc

4E0') 0379 41

C3.35-= . NOLO LINF.AftiTY IOMF

Mr • It 359 0360

V I2A 4 5K4

>2- I2SN7GT AFC

C424 5000

R37 »MG

360 600

0362 3900 8362 33K

79 270K 255

- V18 :6AL5 :DETECTOR

0423 391

V I 9 V20 6507 25L6GT

-, Re Iv AUDIO AUDIO OUT T

8418 0420

470K '8°

9421 COR

VULF

1264

130101 53".

9275 I MEG

GREEP1 0351 0301

11278 (!ij 11/65 226

0278 .oseti

0279 2 7K

V14 IB3GT/ 8316 1-1.V RECTIFIER

152

0417 no« 0420 0422 5000 §1110K

5401 COARSE FOCUS

O424 0

430

O425 020

1054

43

12C101, 12C108, 12C109, 1213, 1214, 1211 (B version) ELECTROLYTIC CONDENSERS


C4I0

C3I0

C272

C355

C379

C451

C452

C453

C309

C423

C454

1 mi. , 50V

30 mi.. 450V

10 ml. , 450V

40 mi., 300V

10 mf.. 150V

300 inf., 150V

125 mf., 350V

80 mf. , 300V

20 mf., 300V

50 mf., 100V

100 mf. , 75V

SPECIAL

RCE-090

RCE-092

ACE- 100

RCE-I00

RCE-100

RCE-110

RCE- 1 1 I

RCE-112

RCE- 115

RCE - 115

RCE-I15

C419

C372

C376

C36I

C265 C365 C362.7

.01 ml. , 600V

.0022 mi. , 1K V

500 mmf. , 20K V

.01 mf., 600V

9 mmf.. silver mica 1800 rnmf., 600V 3900 mmf.. 500V

TRIMMERS

RCN-018

RCN-019

RCN-023

RCN-025

RCN-029 RCN-033 RCN-034

C207

C230

C213

C206

Trimmer

Trimmer

Tuning capacitor

For MU channel trap .7-7,0 rom!.

RCY-048

RCY-048

R CY-059

RCY -060

CONTROLS

DESCRIPTION REF. NO. PART HO.

Volume,

Brightne••.

Hor.

Vert.

Vert.

Height

Picture

Focus

Hor.

500K

500K

Hold, I25K

Hold, 1130K

Lin. 4K, 2w.

3 meg

2 ineg

100K

Drive 25K, 1/2 w.

WIREWOUND

R412

R276

R365 R305

R311

R308

R262

R421

R369

R45I

R427 R220

RCC-128

RCC-I30

RRC-136 RRC-136

RRC-127

RRC-096 RCC-128

RCC-I30

NEC-140

RRW-048

RRW-045 RRW-049

RRW-054

4.6 ohms, 1700

43 ohm.,

Globar.

5w. , w. w.

ohms, 3w., w.w.

4 w. , W.W. 35 ohms. 0.6 arrip(R455

COILS

REF. NO" DESCRIPTION i

PART NO.

L201

L202

L202

L2I8

L226, 7

L251

L252,3

L254,5

L254.5

L257.63

L259,62

L260

L261

L264

L351

L352

L353

L401

L45I

1.258,

Input

Choke

CHoke

Cathode choke,I. 4 mh.

Converter plate

IF coil

IF coil

.6. RF choke, 31 mic.

for vid. detector

Video detector asey

Vid, comp.. ch. 165 mir

Vid. comp., ch., 165 mic

Trap, 4.5 mc Video

Video Peaking, 110 oh.

Video comp., 130 oh.

Hor. Osc.

Hor. lin.

Width

Focus

Reactor filter

2, 452, 3, 4, 5, 6.

Heater choke. 2 rojo.

RLA-036

RLI-006

RLI-106

RLI-003

RLP-016

ALI-096

ELI-110

RLF-024

RLX-029

RLI-038

RLI-093

RLI-100

RLI- 108

ELI-109

RLC-091

RLD-020

RLD-014

RLF-026

RTL -096

RLI-122

TRANSFORMERS


Vert. Output

Hor. Output

Audio Output

Yoke

Audio IF 1st

Ratio detector

T301

T351

T403

0301

T401

T402

KTO-064

RT0-076 RT0-081

RLD-013

RLI-097 RTD-008

MISCELLANEOUS


S401,2

Y I

X451,2

5451

Switch-focu• Detector -Germ. xtal

Speaker, 5 1/4" PM

Selenium rect. 300 ma.

Ion Trap

R-F Head-end

Thermal cutout

RSW -066

IN64 S-527D-7

RER -009

RET-005 RJX-040

RSR-002

MODEL 1217 ONLY.

@25.2v 0 v

11.7 - INF

(a19 v 0

0 v INF 100 ‘ v 0. 9 v

10K -

165 v

V1 6AB4 1st RF Amplifier

@l9 v

.

215 v

9 10K

10K • 12.7 v

55

210 v

0 0 "2 7 0 v

450K ,

-0.5 v


6.3 v • v

• 39K d v -2. 7 v 2 220K

0V 3 0 • 0S 1 V

10 -0 v (c_r12. 7v

5. 6K

280 v

V3 12AT7 Converter - Oscillato—r1

[,y1 6AB4 1st RF Amplifier






V9 12SN7GT Vert. Sweep Gen.& Output

VIO 6SL7GT Sync.Amp. & Clipp2r

V11 6AL5 Horizontal Discriminator

1V12 12SN7GT Hor. AFC & Sweep Ose.

V13 19BG6 Horizontal Output

V14 1B3G/8016 H. V. Rectifier

V15 25W4GT Damper


V17 6AU6 Audio Limiter & Amplifier

V18 6AL5 Audio Detector

V1S 6SQ7 Audio Amplifier


TEST CONDITIONS

Yoko?' Measuremerats;

VOLTAGE MEASUREMENTS IN RESPECT TO IS—, METER 20It OHM/VOLT LINE VOLTS 117V, 60 CYCLES.

ALL CONTROLS SET FOR NORMAL SWEEPS. • USE 2.5 VOLT RANGE.

v. VOLTAGE VARY MORE THAN 20%. AC VOLTAGE READING.

R•sIstaace Measurements:

SHORT CAPACITOR C453. SHORT PIN 3 OF VIS TO IMF. DENOTES INFINITE RESISTANCE. TURN THE FOLLOWING CONTROLS FULL CLOCKWISEi FOCUS CONTROL, CONTRAST, BRIGHTNESS, VERT-ICAL HOLD, VERTICAL SIZE, VERTICAL LINEARITY.

VALUES LISTED MAY HAVE A TOLERANCE OF 20%.

DI4M-DO HOT MEASURE.

1

44

1 SECONDARY

TOP

PRIMARY_i_ BOTTOM

1

1

1

1

1

14T AUDIO F TRANS

L260

[L Y25' 4)

SHIELD

CHANNEL' il TRAP 125 (TOP)

C206 1253 (BOTTOM)

C 2070

TOP VIEW

C>4-1251 (TOP)

Ce- L226 ( TOP)

1227 (BOTTOM)

8452 X 451

ID

490,

BOU'ILM VII :ri

4484

L

II II

il

Il II

1

For Production Changes for 12T7, see Page 109. - ADJ CH TRAP

I 4725 MC - 1

V 3A I Ur 0209

I. CONV ao9 VI I2AT 7 L227 ellt622e L204 L206 1207 •700 L

6484 IsT R F C218 1

3 4 56 S2024

iAt iren.

13

05 C206 -152020

C201 150

F72013 3MEG

R202.3 30E0

C202

2,, L213 L2i4 1300

4 6 L2I5 7.8 9 2 a (---41 vs.v. 15

•

R222 Yit 470 V 2 I10K 6

l 26N0BCR5F I

0216 1215 l

1

56y- 800 I

I

1219 L220 1221 1222 1223 If i 1224 L225 • 1214

Ize Pe er Per er .1 ...i5 1..._ I Fir

I

TONING # C21: 7. .3 V 38 OSC

nap cre I I I

2 3 1 5 4 7 8 9 a II

02161C212 10K 1-12

5202C

CONTROL 1

:121 Y2 12 AT 7

CHASSE 1

I

520213

0212 0213

5171 51K

L_

5

eL226

C217 800

0218 39K

3451 4,

2le C210

803

-* 52020 C1OSEDON CHANNELS 2- INCL.

8451 TNERMAL

Gui 040

5-451 POWER

0451 C45I 46 0452

271 R267 10 6800

6272-10MF 150%. e C355-40MF 300V II 1379-1016F 450V a

C454-201e 1423-50ME 1309-K304e

1.451

300 MF 265V 55 ft

0451 1452 125 OAF

0452

680

300V 150V • 75V

V4 Is T IF 6BC5

6251 615MF

0453 •70K

C222 C223 Cie Boo 0 C224

800 920 V9 V• VS VO 916 V7 VI V2 1 V3

eSN7GT e6C5 acs 41315 64U6 12.4T7 6484 88c5 12477 9 • 4

6458 L.V49 145C3 ....1.45460 e46, 1435

5000 50001. 5000 5000T Cee T T R220,4311. 49/

0455 é 98166 125N7GT 6•5 651.7GT 25404GT Edit* 64L5 1456 6507 35 2 7 7 4 7.8 e 7 3

V VIS VI? ,..•,-, VI8

10 ' 4,-\• ;' NOTE SEE V17 Q 1

V8

NOTE FOR 126107, 126108 126109

BASS 03116P 0414 CIRCUIT 6416 54K

.014IF î

ADJ CH TRAP 4725 MC

V5 V6 2No 3Ro I F 6E105 1253fi,c22280 EBC5

1255 C259

1257 5000

gL252

12C101, 12C108, 12C109, 1213, 1214, 1211 (B version) Y I V 7A V 7 B CET 1ST VIDEC 2 toVIDEO I N64 1/2 12417 1/2 12477

1 41 1265

t!I 1255 C268

1

1 — I 1 05

L256 0264 31Uel

47 470 8268

1266 -L--4 0265 22 MEG 5000 3600

GREEN 1259

C26 5000

470K PejerijR1 126i

0263 L5MEG

R353 470116354

OIMF

C353 •• 470 •

1351 02

VIO 6SL7GT SYNC AMP a CLIPPE

VII 64L5 DSC

1257 F65 JUH

1303 _if 470

VERTICAL SWEEP GENERATOR CUTPUT

0302 39K

V 9 A 1/2 -I2SN7G

0359 0360

4.2 MC TRAP

4.

,. R307 6 4.71/EG.

304 700 68K

C306

0305 304 2 514 !MEG

0270 181( 2W

V124 V128 R367

V2- 12SN7GT ,6t 3 4- 12SN7GT AFC HOR OSC

C 63 C365 7' V13 0373 0361 • 4 0 1800 198G6 47C1L 'MEG' •

- : • R 1372 fl .. • 1(

6 0022 6364 C367 .._ 220 3900 0372 4011

GREEN .,•• 169 G 274 1262 •• ,HE 6

L.263

RED

RI \T

6800 1261 110 UI4 REO

R269 15K

A • C272

IOMF

03)0 2700 + C309 +

R31-; be 4K

1273 0578F

0272 4700 2W

1362 3900 0362 33K

C361 O1

1375 05 PIF

0365 OOK F41 de_ tQL0

- 6352 R379 .05MF 270: 255V

VI 6 VI7 A6AmpU6Li

4 T401I5eC L M6AU61TER -AMPLI

e --I o 0410 R4.5

. 47 IA l G , 1 o OH

EAG7= D c no : 22K 6417 b * i 5000

3.,. 1 6411 402 33 I 001 -

39 i 5000 ,--bb -' 0408 m.

E 270 0411

6406 I

R403 2Elli.. ; %IT J. OK 6425 0405 0406 - 1 9 G4I3 l

100K 470K 4or .1..c409 —1 —4-6 --. R404 1K -- e°°° - 1" 56K c:412 5000 , 1 0412,

•••• 0.5. V

21.01 .-.. C51X3 liEG. 1402

kW 41 .-. •-' 5000

-1 V18 ; 64/5

111 'DETECTOR

6369 6

0418 0420

4705 120

1275

1352 H00104

V 8 PICTURE TUBE

12KP4A OR I2LP4 A

GREEN 0351 0301

8275 MEG

e.g.; I 0277

V14 I B3G T/ 806 H V RECTIFIER

6374 470 TJUF

e

5401 COARSE FOCUS

0424 L9 4 ..MOV9 MCI •30

0425 1401 820

0427 1700 3Y1

t(-

S402 0 0

10XV 4-

1 45

12K1



C297

C354

C358

C346

C37I,

2, 3, 4

C299

C383,4

C257,

C258

C406

C5

C2I3

C225

C226

10 mf. , 350V

50 inf. 100V

100mf., 50V

I ml. , 50V

ISO rnf . , 150V

30 mf. 450V

60 mf. 350V

10 rnf. ,450 V

40 mf., 300V

10 mt., 150V

TRIMMERS

RCE-089

RCE-089

RCE-089

RCE-090

RCE-091

RCE-092

RCE-094

RCE-100

RCE-100

RCE-100

RCY-034

RCY-059

RCY-060

2-20 mmf. , ant. te

Tuning control

For high channel

trap . 7 to 7 mmf.

CONTROLS


Volume 500K

Br‘ghtne•• 500K Contrast 2 rneg Hor Hold

Hor. Size

Vert. Hold 100K Vert. Size

Vert, Lin. 2K . 2 ,„„.

Height 3 rneg

Hor. Drive 25K

Focus 100K

WIREWOUND

R404

R230

R232

R329

R307

R300

R302

R402

R369

R373,4 R377

R372

RRC-113

RRC-110

RRC-I10

RRC-103

RRC-103

RRC-095

RAC-096

RRC-108

RRC- 113

RRW-041

RRW-045

RRW-048

Globar, 75 ohms

1700 ohms, 5 w . , mw.

4.6 ohms, 5 w. , w.w.

COILS


1.201

L202

L203

207

L204

247

L205

209

L208

246

L245

L247

248

L255

268

L256

257

L258

L260

L269

L3I5

L3I6

L3I7

L344

L376

L244,

Input

Cathode, 1.4 mh.

RF input

RF ch, 31 oh. ; for

video detector any

Converter plate coil

IF coil

IF coil

Video detector assy

Video comp choke.

165 tali Video compensating

165 uh.

Video comp., 130 oh.

Video peaking coil

4. 5 mc video trap

Horizontal linearity

Horizontal o•cillator

Width control

Focus

Filter reactor

Headend 44mc IF

Antenna loop any.

350, 371, 2, 3, 4, 5

Heater choke, 2 oh.

PLI -023

PLI -003

PLI -083

RLF-024

RLP-016

PLI -110

Ft LI-096

RLX-029

ALI-093

PLI -038

PLI -109

PLI- 108

PLI -100

RLD-020

PLC-OS 1

RLD-018

RLF-028

RTL-096

RJX-037 RLL-036

PLI-085

TRANSFORMERS


Vert. Osc.

Vert. Output

Hor. Output Yoke

Audio IF 1st

Ratio detector

Filter reactor

Interstage

T29I

T32I D295

T340

T341

L376

T345

PTO-064

RT0-076 RLD-013

Ft LI-097

RTD-008

RTL-096 RTM-005

MISCELLANEOUS

REF. NO. DESCRIPTION PART 140.

X371.2

Y I

Y2

Record changer-

triple speed

Speaker-12" PM

Selenium rectifier

250 ma.

Detector -Germanium

crystal

Detector-Germanium

P14

UOP- 1247

RER -004

IN64

11,165

PRODUCTION CHANGES MODEL 12K1

1. IF TRAP: Early production receivers had an IF trap

added in the head-end unit connected between pin 2 of tube

VI and pin 1 on tube V2. The schematic, shows this trap

in broken lines. All sets with this trop hod the coil detuned

and the screw bent so that the slug could not be adjusted.

On later production receivers, this trap was removed.

2. IMPROVEMENT OF PICTURE QUALITY: In order to

improve the picture quality of this receiver, the plate load

resistor (R275) of the first video amplifier, V8A, was re-

duced from 2200 ohms to 1500 ohms (URD-053). The reduc-

tion in gain affected by this change was compensated for

by reducing the vlaue of the screen resistor (R247) of the

first video IF amplifier tube, V4, from 82,000 ohms to

47,000 ohms (URD-089).

3. REDUCTION OF BACKGROUND NOISE DUE TO HAR-

MONICS OF AUDIO IF: Harmonics of the audio IF have a

similor effect on the picture as noise under weaker signal

reception. A simple check for this condition is to short the

limiter tube, V16, grid to cathode and observe the picture

when receiving a station. If there is a noticeable drop in

noise, the following changes should be mode:

An RF choke )L350), RLI-085, and a 5000 mmf. capacitor

(C357), RCW-3014, is added to the sound IF amplifier. This

involves the removal of the connection to the pin 7 of V16

and the ¡unction of resistors R344 and R345 from the B—

bus. These two points are then connected together and re-

turned to B— through the RF choke (L350). The capacitor

(C357)by-posses this choke and connects to chassis ground

(not B—).

The choke location should be from pin 7 of V16 to the

nearest B— bus point, while the capacitor (C357) should

connect from pin 7 of V16 to o ground lug under the dis-

criminator transformer mounting nut. On some receivers it

will be found that the capacitor C357 is added between the

junction of R344 and R345 to chassis ground. This capa-

citor location should be moved and connected as indicated

in the above procedure.

4. CHANGE OF BANDWIDTH: Early production receivers

had a bandwidth of 3.5 mc. In order to prevent sound in the

picture, the IF bandwidth was reduced by 0.25 mc.

5. CHANNEL NO. 11 TRAP: A trap was added to the head-

end unit. The Cat. number FM-037 refers to a unit which

always incorporates the trap.

6. 4.5 MC INTERFERENCE: This causes similar condition

described under paragraph (3). In order to completely

eliminate this trouble, a 5000 mmf. capacitor (RCW-3014)

was connected between socket terminals No. 4 and No. 7

of tube V16.

(continued on Page 109.)

VI 6AU6 lot RF Amplifier

V2 6AG6 2nd RF Amplifier


V4 6AG5 lot IF Amplifier

V5 6AG5 2nd IF Amplifier

V6 6AG5 3rd IF Amplifier


VIO 12SN7 Vert. Mult. & Sweep Output


V14 1B3GT High Voltage Rectifier

V15 25W4 Damping Tube

V16 6AU6 Audio Limiter & Amp.

V17 GALS Ratio Detector

V18 6J5 Audio Amplifier


V20 6SL6GT Sync.Arnp.& Clipper

V21 12SN7GT Hor. Osc. & AFC



TEST CONDITIONS Voltage Measereamerrts:

VOLTAGE MEASUREMENT IN RESPECT TO 11—, METER 2014 OHMS VOLT, LINE VOLTS 117, 60 CYCLES

ALL CONTROLS SET FOR NORMAL SWEEPS. • USE 2.5 VOLT RANGE. ftVOLTAGE MAY VARY MORE THAN 20%. @AC VOLTAGE READING.

Resistance Measurements: SHORT PLUS 250 TO B. SHORT PIN 3 OF V15 TO S. 111F DENOTES INFINITE RESISTANCE. TURN THE FOLLOWING CONTROLS FULL CLOCKWISE, FOCUS CONTROL. CONTRAST, VERTICAL HOLD, VERTICAL SIZE, VERTICAL LINEARITY.

VALUES LISTED MAY HAVE A TOLERANCE OF 70%. FOCUS SHUNT R338 SHORTED AS DELIVERED FROM FACTORY. OHM- DO NOT MEASURE.

46

1

1 1

1

1

yi 18

425)

4:51.6GT CHANNE71.7.1 TRAP

e C226 C223

Y1

1247

1244 (Top) v113

208 k 125217CT (Bo., TON

@--1245

1‘/..D4 05

t -L209 (Ter)

1205 (BOTTOM)

37;

TOP VIEW

11 372

254.• GT

BOTTOM VIEW

311. 74 T

17 SK 7GT

11 .us

0

GAGS

(E )

QM/


For Production Changes, see Page Opposite and Page 109.

3504

Lt L222 1224 1225

ANTENNA RIPUT 300 011115

C201-I50

*52020

4216 12301 3311EG g

1207 4217

336,1EG 6226

C203-80 - 234 120

52028

5205 3506

518 MK

_C.216 r00

1362 1263 1264 1265 1266 ef ar er

5202G C2.122

27 aeL2211 VI

6AU6 1ST RE

ADJ CH TRAP1 V 3A 47 25 MC I

CONV et I ti 12AT 7 Uesi

1205 22

C2201

15I-r

so 6 AG5'19 2/0oR F

iteoe V 2 100

R203 c206 V

1267 21 Jar C223

2

I

• um

Ara 250v

AUDIO CARRIER TRAP ADJ CH TRAP

V4 • 1 25 MC V5 47 25 MC

1ST IF & 2tio LE ,.,.., et 6AG5 0 6405W FiCtS2

1270 gr 1206 F1 22

6234 6239

LE TRAP

eu

V 36 I OSO I Yz I2AT 7 I

CONTROL 4i2,5,96 04•1843 1 TUineill C2I3 Kb DO I

— cameo

t— -- -- — — — — 1E$2020 OREN ON CNARAELS 2-610011 *GROUNDS MACE TO HEAD EEC, CHASSIS ONLY \le

NOTE . 6310 SHCETED F R300 25L6 GT

LINEARITY 8EST FOCUS O CL DNTR 0 ON LATE PRODUCTION A

68C5 MAT 13F USED WHEN REPLACING A 6665USE • 6863

117V 13,2 OD -

1374

BOTE AMER IS

CLIPPED OUT F 8354 430.5 0434E0 MOO IS 700 NM

C371 J5084

••

GS72 isoas

EMUS 0077

+ 260 v

R358 430

FOOS COE L344, 300,

V19 vs0 v4 v5 VIS v23 Ve VI V2 v3 4373 451148T MINT 6065 4665 6A0 SAMS I2AT 6446 6A65 EAT7 75

C4011

•-1-e•oeZ 2" Z220

8374 ise6136 1291761 6A1.5 6sElGT 25144T fetli 0E5 1374 615 4 7 11

C409 vI3 v21 v22 v20 vi5 VIS Vil va

220 1-40TE SEE VIS

MU: CMICIT001 NOILUE3414E IMF (ALM SPEWED K67,953 -7 G257-10mED 150v à C258 -40 • 500v a G406-0 • 450v KA

467,955-4 c364-tOmED 350v • C36550 • 00v .6 c297-430. 75v

+250 v

V23 6 AU 6 AMPLL

vice 12SN7GT

UK ;Îze.

1 0 5

C270 1-.21, 0 BRIGHTNESS

14232

12M V 9

PICTURE TUBE 12 KP4A

GREEN 0313 0295

2131 220R

VI 4 1133G V 8016 RV RECTIFIER

V 15 25W4GT DAMPER

3 r2333 .

4304 I 2K 811.

V6 Y I V8A V88 Y2 3fto 1E„ CET Ise VIDEO 2..VIDEO DC RESTORER

6AGS ‘."-) — — — JN 4 vi 12AT 7 '12 12477 1N65 111 eeTe

V20 6SL7GT SYNC AMP CLIPPE

V22 64L5 DISC

C331 .051.118

r - 45" - 'I VI7 V16 T341'6415

4.5 mc 6AU6 1 4 §

0 LI _MITER-AMPLI. — 32 4: gI s I à à :CETI 5 f,.'. 044

22X

J. C, Q. C-351 C Izo .

10 Qm 7 li

i ; mie234roe. 0123::

6343 II-4 5000

11341

C.237

1248 G273 .02

8265 3600

1256 ,65

1244

21n4 25 ..

VERTICAL SWEEP

GENERATOR

GREEK 1255

8297 684

11276 UMEG

6256 5000

GREEN L268

\Pr 72 4236 6290 6900

1260

46211C4275 TRAP t.5

kV 1506 150K

V2IA V2I8 4334 K2 - 12SN7GT M2 12SN7GT »lc HOR 05C. HOR. OSC

1 • I i--- M C400 6402

• C« 4348 , 470 OW . 1106,

394

13-1 G404 68K s

1 mEG 3900 220 4364 c 396 c401

t000 3900 er— —

,1391 334

8385 0E6

395 680

6362

5-41-1 C343 002 D2ir

R402 25K HOP 51119E

4370 26K

R404 51012 vOLUNE CONTROL

25W 1345

14C101, 14C102, 1412, 1413 ELECTROLYTIC CONDENSERS


C410

C3I0

C451

C452

C453

C454

C423

C309

C379

C355

C272

C207 C2 13

C206

C220

1 mf. , 50V

30 mt., 450V

300 mf. , 150V

125 mt. , 350V

80 mf. , 300V

20 mf. , 300V

50 inf. , 100V

100 mf. , 75V

10 mf., 450V

40 mf., 300V

10 inf., 150V TRIMMERS

RCE-090

RCE-092

RCE- 110

RCE- Ill

RCE- 112

RCE- 115

RCE- 115

ACE- 115

RCE- 118

RCE- 118

RCE-118

. 4-2. 4 mmf.

1. 4-2.8 mm!

For high trap

. 7-7 rnrrif.

Trimmer

RCY-048

RCY-059 RCY-060

RCY-063

CONTROLS

DESCRIPTION REF. 140. PART MO.

Brightness 500K

Hor. Hold 100K Vert. Hold I25K

Vert. Lin. 4K, 2 w.

Height 3 meg

Hor. Drive 25K

Focus 10K

Volume 500K (14T2. 3) Volume 500K (14C102, 3)

Contrast 2 rneg(14T2, 3)

Contrast 2 meg(14C102, 3) WIRE WOUND 6: SPECIAL

R276

R365

R305

R311

R308

R369

E424

E4 12

R4I 2

R262

R262

E451

E220

R382

E380

RRC-145 EEC-146

RRC-146

RAC- 127

EEC-096

RRC- 140

EEC-145

EEC-128(off-on)

EEC- I 3I(o)f -on)

EEC-128

EEC-131

RRW-048

RRW-049

RRW -051

RRW -052

RRW -053

4.6 ohms, 5w.

43 ohm•, 4 w.

20 ohm•, Globar ternp.cornp.R454 10. 5K, Globar voltage

sensitive resistor

4K, 7 w.

COILS


L201

L202

L218

L226,7

L252,3

L254,5

L256

L25/63

L259, 62667.

L260

L261

L264

L351

L352

L353

L401

L451

Antenna Input

Choke

Cathode Choke

Converter plate

IF coil

Video detector easy.

Choke coil RF

Video choke coil

Video choke ix rests. Trap 4.5 MC video

Choke video Choke video

Hor. oscillator

Nor. linearity

Width

Focus

Filter reactor

RLA-036

RU-106

R11-003

RLP-016

RU-110

RLX-029

RLF-024

RU-038

RU-093

RLI-100

RU-108

RU-105

RLC-091

RLD-016

RLD-014

RLF-039

RTL-096

TRANSFORMERS


Vert. Osc.

Vert. Output

Hor. Output Power

Audio Output

Yoke

Audio Output

Audio IF st

Ratio detector

T301

T35I

T403

0301

T403

T401

T402

RT0-064

RT0-090

RT0-081

RLD-025

RT0-086

ELI-097

ETD-008

(14T2, 14T3(

(14C102,103)

MISCELLANEOUS

REF. 140, DESCRIPTION PART NO.

X451,25elenium

B45I

rect., 350 ma Ion trap

Pm-speaker contact

RF Head-end

Cutout Thermal Speaker (I4C102, 3)

Speaker (14T2, 3)

Crystal (11464)

RER -008

RET -003

RJC-00I

RJX-043

RSR-002. 5120007

5527D7

Part of RLX-029

VI 6AB4 1st RF Amplifier

2nd RF Amplifier



V5 6BC5 2nd Video Amplifier



V9 12SN7GT Vert. Sweep Gen. Fa Blank'

VIO 12AU7 Vert. Sweep Output

VII 6SL7GT Sync. Amp. Fe Clipper

VI2 6AL5 Hor.Freq. Discriminator

V13 12SN7GT Hor. AFC eg Sweep Osc.

V14 25BQ6 Hor. Sweep Output

V15 1X2 High Voltage Rectifier

VI6 25W4GT Hor. Damper Tube





TEST CONDITIONS


Inputs 117V, 60 cycles.

All controls set for normal sweeps.

Measurements are in respect to B-

with a 20K ohms/volt meter.

* 2.5 volt range.

tf Voltage will vary more than 20%.

@ - AC Voltage Reading. Resistance Measurements:

Short capacitor C453.

Short pin #3 of V16 to B-.

M denotes meg.

Inf. denotes infinite resistance. Turn the following controls full

clockwise: Focus control, contrast

brightness, Vertical hold, vertical size, vertical linearity.

Values listed may have a tolerance of

20%.


1

il

48

f.

SECONDARY / TOP

PRIMARY BOTTOM

7401

RATIO DEF

251667

CMANNEL' il TRAP

® L252 I TOP)

C206 L 253 ( BOTTOM )

Is* Auoio F TRANS

260

VI

1.2 54

1227 (BOTTOM)

VI 3

I 2SN7GT

VII

6SL7GT

C2726 C 3550 C 379

SHIELD

V9

125/4761

04.—L 251 (TOR)

1226 (TOP)

25806

TOP VIBJ

2451

$2

BOTTOM VIEW

IS sm. FAT

25806

C451

2452

4454

1

For Production Changes, see Pages 109 and 110.

117v 40

78

R27613111E0

R27 3.315EG

* C206 .S202

L203

1.201

2 /213 L214 1 216

R212 9213

5..11 5.16

L219 L220 1221 1222 1.223 L224 1225

1»e Re Pe Frf

9216 IC2I2

1011 'r 12

1451 04)

1452 VF)

52020

VI 6A84

207 NT RE

V3A CONV. I2AT 7

4125 PAC I

1227 e30219 22 I

2

R2I9

'VV.& 470

V 38 •Fel -4-osc i Yz I2AT7 I

C213 NEW (10 I „..................- CRASS* 1

• szoe cuesED0H cmwomELs E-s INCL.

9451 THERMAL

CUY OUT

;.3

ITOR VALUES ARE IMF UNLESS SPECIFIED

0272-101AF :50v IL 0355-4091F 300v II C379- 101:1F 460V

0455-2061F 300V el C423-50MF 100V • C 309- KK31IF 75v

5451 L45. C45I 46 14 52

300 MF 265v 55 A

11452 1251AF

9452

660

255v

R453 • 709 ge C222

V2I V9 v10 VS ve vI7 v7 vi l V2 v3

251.6 eve 12207 68C5 v4 80C3 405 6Aue GATT 6594 8805 12,9T7 4 4 9 • 4

V4 IsT I 6BC5

C251 .5MF

C•54

20MF

C4561 1552 I 1453 I 1454 jt.455

s000 woo' s000 seal 800 I r ee r eooT R22.4

0459 0460 C461 022i 0124

25806 1259.707 64.5 651.70T 255461 ULM BALS 1456 161307

4.2v v V 14 47 13 12 II

v.6 v18 219 220

NOTE :SEE v113

5451 POWER

TRANSLATOR

POWER

NOTE

FOR 15C 102 140 103

0513

8585 COI.P 02021 0416

.011.•

5000

2512 0 5MEG

nVeit C415 6000

0255

5

9254 Sill

VI7 6AU6 AMPL I

14C101, 14C102, 1412, 1413 2#o LE a 3ito LE

6B65 °EeC5

V5

LA250:1.7C.;46 cTmtR2caAeP

V6 CET.

syVv7IDEA 2 moVIDEO V 7B

41 t.1.1 11:12AT7

0259 0261

I IN64 I2,AT 7

¿ 0265 II

0351 .022 mr

ELM itzsee

7

C261 5000

9353 5709 C354

5 C353

_L 352

VI8 6AU6

IMITER-AMPLI.

V9 VERTICAL SWEEP GENERATOR & BLANKING I 2SN7

R 302 395

1255 CM.

I — 1 es

1256

31W4

GREEN 1259

6270 11311 tw

v e PICTURE TUBE I4CP4

0215 OOP

110154

1.1275 MEG.

000 VERTICAL DEFLECTICN COILS 0301,

1000 CiO5 Z.1.3e, R318,476

• 1009 VIO

I2AU7 IFFIUTCAL

BLUE[7301GREEN ?249 4 îte

1

1-4e-41-2 C363 C365

#361 „, 410 4100 IREC

0362 3900 5362 335

-1 VI9 ; 6AL5 ;DETECTOR

41(

VERT. - 0379 LINEARITY

R362 0 (AT 125V1

V20 ss***;:iir-e. • 0410 6907 25L6GT IMF Iv AUDIO AUDIO OUTPUT

5518 " 20

470« ISO

R521 1000

R315 2.2Kg 280

1352 NOR 154

V15 I X2 H.V RECTIFIER

037 .564

Ile* 370V

49

16C110, 16C111, 16C115, 1611, 1612 ELECTROLYTIC CONDENSERS


C410

C310

C379

G355 C272

C451 C452

C453

C454

G423

C309

I ref., 50V

30 rnf., 450V

10 rnf., 450V

40 mf. , 300V

10 mf. , 150V

300 mt., 150V

125 mf., 350V

80 mf. , 300V

20 mt. 350V 50 rnf., 100V

100 ntf., 75V

TRIMMERS

RCE-090

RCE-092

ACE- 100 RCE- 100

RCE -100

RCE-110

RCE-111

RCE-112

RCE-115

RCE-115

RGE-115

C207

C230

C213

C206

Trimmer

Trimmer

Trimmer

For htgh channel trap

RGY-048

RCY-048

RCY-059

RCY-060

CONTROLS


Brightness 500K

Hor. Hold I25K Vert. Hold 100K

Vert. Lin.

Height 3 mtg. Volume 500K

Volume 500K

Picture, 2 meg.

Picture, 2 meg.

Focus 100K

Hor. Drive 25K WIREWOUND & SPECIAL

R276

15365

15305

15311

R308

R4I2

15412

15258

R258

R421

R369

R427

15451 15454

15220

382

R382

15380

RISC- 130

RISC- 136

RRC-136

RRC-127

RISC-096

RRC-128(16TI, 2)

RISC- I 3M16C110. 1, 5)

RRC-128 (16T1, 2) RRC-13106C110, I, 5)

RRC - 130 RISC- 140

RRW-045

RRW-048 RRW -051

RRW-049

RRW -052

RRW-052

RRW-053

1700 ohm•, 5W

4.6 ohms, 5W 20 ohm•, Globar temp. comp

43 ohms, 4W

20 ohm•, Globar temp. compR

10. 5K, Globar Voltage

•ensitIve re•iator 4K ohms, 7W

COILS


L201 L202

L353

L218

L226,

L251

L252, !3,

L254, 55.

L256 L257,

L259

L260,

L264

L261

L35I

L352

L401

L402

L45I

L452, 53.

Input

Choke Width control

Cathode choke

7, 218,19. Cony. plate

2nd Video IF

IF Coil

Video detector

Choke 53. Video Choke

Video choke

0, 71. Trap 4. 5 mc vid.

trap

VIdeo choke

Vtdeo choke Horisontal on,

Hor. linearity

Focu•

Choke

Filter reactor

54, 55, 56, 58. Heater

choke

RLA-034

RLI-106

RLD-014

ALI-003

RLP-016

ALI-096 RLI-110

RLX-029 RLF -024

RLI-038

RLI-093

RLI-100

RLI-109

RLI-108 RLC-091

RLD-016 RLF-038

RLI-085

RTL-096

RLI-122

TRANSFORMERS


Vert. Output

Nor. Output Audto Output

Yoke

Audio IF let

Audio Output

Ratio detector

7301

T351

T403

0351

T401

T403

T402

RT0-064

RT0-085

RT0-081

RLD-024

RLI-097

RT0-086 RTD-008

(16T1, 16T2)

(16C110, Ill, 115)

MISCELLANEOUS


X451,1

B451

5401,2

LS2 1.52

Selentum rectifier 300

Ion trap

RF tuner Cutout thermal

Switch focu• Speaker (16C110,I1,15) Speaker (I6T1, 2)

ma. RER -008

RET-003

RIX-040

RSR-002

RSW-006

SIZOOD7 052707

VI 6AB4 1st RF Amplifier

V2 6BC6 2nd RF Amplifier I


V4 6BC5 lst Video IF Amplifier




V9 12SN7GT Vert. Sweep Gen 8zBlank'g

V10 12AU7 Vert. Sweep Output

V11 6SL7GT Sync. Amp. gi Clipper

V12 6AL5 Hor, Freq. Discriminator

V13 12SN7GT Hor.AFC it Sweep Osc.



V16 25W4GT Hor. Damper Tube


V18 6AU6 Audio IF Amp. Limiter




TEST CONDITIONS


Input 117V, 60 cycles.


Measurements are in respect to B—


* 2.5 volt range.

ttVoltage will vary more than 20%.

@- AC Voltage Reading.


Short capacitor c453.

Short pin 3 of V16 to B—.

M denotes meg.

Inf. denotes infinite resistance.

Turn the following controls full

clockwise: Focus control,

contrast, brightness, vertical

hold, vertical size, vertical

linearity. Values listed may have a tolerance

of 20%.


1

50

1 SECONDARY

TOP

genuaer_±... DOT TOM

CHANNEL# 11 TRAP

L252-1 (TOP)

C206 1.255 (BOTTOM)

TOP VIEW 1451

UIT Auceso UP TRANS

L260

Y'

SHIELD

C1.-L 251 (701)

1.226 (TOP)

L227 1130770111

25106

1 22

2451

BOTTOM VIEW

1452

Pr'


1

Fig4L

204 pr 1.206 L207

3 4 6 5202

70ReillaWT 1 V

rL

e

G202

212 L213 L- 2,4 L216

VI 6484 Isr RF

à

C206 -152020 6

1.203

1257 5100

4 6

520213

8212 R213

Î2089

L215 7 11 • 213

L219 1.233 1.221 L2221.223

Pi-Pbreer

R211 C212 102 12

63-

1451 .10

L224 L225

52021

- • 52020 C105E0044 CmANNELS 2-6 1NGL

1145t TNERAIAL

CUT OUT

11126/R

1452 171

R454,

1451

300 PAF

V21 V9 va va 25L6 12917 eAU7 6105

4

8451 46

X45i

68C5 281, R F

5457

V4 Is? IF 6BC5

V 3A CONV I2AT 7

V 3B OSC Ys I2AT 7

1.227 Él.C219 at I

1218!

C217 1300

HEAD END CNASS0

_1451.11.c iTOR vALUCS ARE 188

miss spEcinEo

1272-,01,1F :50v & 1355-407AF 500V • 1379-10717 450v &

1454-201W 300v II C425-5011F 230v & 1309.700ii 75v

1451

1452

*8453 e 470K

C222 si. Ce6 ROO C223

800 VS V8 VI? 97 v I V2 v3 no 61315 64u6 OAT? 6034 16C5 2477

4 9 • 4

251306 122170 68L5 64,7GT 25w407 61140 6115 1456 5507 7 7 7 8 e 7

VIA v i8 VIS v20

It 1 Ve

NOTE

FOR 161,10,16Cil i6c1i 5

SASS COW 111CurT G416

12,47

R4,3 05M13

nee, C•15 5000

Arm Ck1 TRAP 4725 MC

V5 V6 2tro lF 30to IF 6BC5 1.253ecao 6BC5

1255 G259

VI? 6AU6 AMPLI

4 TOK W et

1261

5000

1262 5000 T

1262 2 MEG

1- 1265

16C110, 16C111, 16C115, 1611, 1612

V 7B Is' VIDEC

Y I V 7A OET 2 NoVIDEO

IS 72.1.26EN2 eer7 1 1210

I N6t1.14

1.255 12612 GREEN

I2A2 T 7

8264 470

R2611, 1266 8265 22 MEG 5000 T 3600

V 9 VERTICAL SWEEP GENERATOR ti

BLANKING I2SN7

8302 394

0301 ...ed 1301 001 34F

0357 NEIG

360 660

1256 31UN

1.257 65 611

1362 5900 1362 332

1305 8306 1 •

1000 1002

2 1363 1365 ,s470 :SOO

11365 005

IF

H.=

1352 051,4F 1804

1402 2 Um

71406

5000

0405

5000

4414C TRAP

8270 UN' 2w

1369 102

1366 1000

1261 110

RED

• • 6272

101if

L-11369

6

1273 05..

8272 •700 2w

1215

V 8 PICTURE TUBE

I 6K P4

616231 036, 0301

6521 eat

1322 1501

137

V 15 3.34

I X2 Fi V RECTIFIER

C542

s R428 279

LS2

1E0 •30

140. 620

R•27 1700 3*

1 1

2KV

51

52

16C103, 16C104, 16C113, 16C116, 1613, 1614, 1615, 1616, 11C101, 11C102 ELECTROLYTIC CONDENSERS


C4I0 C3I0

C45I C452

C453 C454

C423 C309 CZ72 C355

C379

I mt., 50V 30 mf. , 450V

300 mi., 150V

125 mf., 350V 80 mt.. 300V

20 ml. , 350V 50 mf. , 100V 100 mf., 75V

40 ml. , 300V

10 mf., 150V 10 ml.. 450V

TRIMMERS

RCE-090

RCE-092 RCE-I10 RCE- Ill

RCE-I12 RCE-115

RCE- 115 RCE- 115

RCE-I18 RCE- 118 RCE- 118

CZO7

C213 C206

C220

Trimmer Trimmer

Trimmer for high Channel trap

Trimmer SPECIAL

RCY-048

RCY-059

RCY-060

RCY-063

C354,419,

C36I C265 C275 C365,67. C362

C376 C378

C351

311. . Olref., IKV . 01 mf., 10% 600V

9 mrnf.,•ilver rnica.

. I ml., 600V 180Ornmf. , 600V

3900 rturif. , 10% 600V

500 ml. , ZOK V HV

47 rnrof..1500V mica .02 mid.. molded

RCN-018 RCN- 025

RCN-029 RCN-031

RCN-033

RCN-034

RCN-035

RCN-037

RCN-044

CONTROLS

DESCRIPTION REF. NO. PART MO.

Brightne••

Hor. Hold Vert. Hold Vert. Lin.

Height, 3 rneg. Contra•t, 2 meg. •

ContraM, 2 meg. ••

Volume. 500K • Volume, 500K ••

Hor. Drive, 25K

Focu•

WIREWOUND Si SPECIAL

R276 11.365

R.305

R3I I R308 R.262

R262

R.412

R4I2

R369 R242

RRC-145

RRC-I46

RRC-I46 RAC- 127

RRC-096

RRC-I28 RRC-131

RRC-128 RRC-131 RRC-I40 RRC-145

4.6 ohms, 5W 43 ohm•, 4W 20 ohm•, Globar temp comp

10. 5K, Globar

4K, 7W 1.2 ohms, 1/2 w

39 ohms, IW

R.451

R220

R454 R382

R.380 R375 R38I

RRW-048 RRW -049 RAW -051

RRW -052 RAW-053 RRW-058

RRW -059

COILS


L201

L202 L2I8,19

L251 1.252,53

L254,55

L255,56 1.257,63

L259 L260,70,71.

L261 L261 L351

L352 L353

L401 IA51

Input

Choke 26,27. Converter plate 2nd Video IF

IF Video detector see.y Choke RF coil

Video choke

Video Trap 4.5MC video

Choke Video Choke video Hor. oscillator

Hor. Lin. Width Focus Reactor filter

RLA-036 RU-106 RLP-016

RU-096 RU-110

RLX-029 RLF-024 RU-038

RU-093 RU-100

RU-108 RU-I09 RLC-091 RLD-016

RLD-014

RLF-039 RTL-096

TRANSFORMERS


Vert. output Hor. output Audio output• Audio output•••

Audio IF 1st

Yoke Ratio detector

Reactor filter

T301 T351

T403

T403 T401 D301

T402 1,451

RT0-064 RT0-090

RT0-081 RT0-086

RLI-097 RLD-025

RTD-008 RTL -096

MISCELLANEOUS


X451,2

0451 S201

Selenium rect., 350 ma.

loo trap RF tuner Thermal cutout

Selector switch Speaker •

9peaker t Diode Germ. crystal Speaker, 12" PM tt

RER-008 FtET-003 RJX-043

RSR-002 RSW-082

S527137

S1200137 1064 1212D7

•

••

••• t

tt

(161'3,4,5,6) (16C110.111,115,103,104,17C101, (16C113, 116,103,104, I7C

(I6C103,4,113, 116)

(I7C101,2)

2)

01,2)


V2 6BC5 2nd RF Amplifier — 1






V9 I2SN7GT Vert. Sweep Gen &Blanks


V11 6$1,7GT Sync. Amp. gi Clipper

V12 6AL5 Hor. Freq.Discriminator

V13 12SN7GT Hor. AFC id Sweep Osc.


V15 IX2 High Voltage Rectifier



V18 6AU6 Audio IF Amp. Limiter




TEST CONDITIONS


Input 117V, 60 cycles



with a 20K ohm/volt meter.

* 2 5 volt range

ttVoltage will vary more than 20%




Short pin 3 of V16 to B-

M denotes meg.



clockwise: Focus control, con-

trast, brightness, vertical hold

vertical size, vertical linearity

Values listed may have a tolerance

of 20%.

DNM - Do Not Measure

1

1

1

182 AU010 IF TRANS

RATIO DET

VI 3

I 2SN7GT

VII

6SL7GT

C2728 C 3550 C 379 -

T351

CHANNEL II TRAP

L252 I TOP)

C206 1253 ( BOTTOM

V12 6AL

SHIELD

V9 12581 TOT

las-L 251 STOP)

L226 (TOP)

1227 (BOTTOM)

25806

25806

• AL5 1 X 2

"Au'

5“ 751

11311767

BOTTOM VIEW

SeC

MRCS

For Production Changes, see Pages 109 and 110. AD.C.H.TRAP

4725 17C 1

I lie 4L R209 V 3A 1 V4L2S CONV. 1ST IF

IsT R.F '412AT 7 L227 ÉtG2T 1209 V I 68C5 6464

5202

C2

C206 162:20 6

eLire4"-le

150

5278,3.30EG

5279,1315EG 1

C279

Lat 1.213 1214

• 6

52028

5212 5213 w-VS/ws--i\AN--

SAX 5.11

— Vo°9

1219 1.220 1221 1222 1223

Pe Pi. Se 171

1201

5214 2200

1224 1225

6202G

1451 1M) wry 20-

145251

•

47-sr020cLosED0«

5451 C451 4.6

8451 THERMAL

SIT OUT - s

:

V2I V9 VIO 94 2516 t2SN7 12407 68C5

4

6451 POWER

TRANSLATOR

POWER

C208

7452

0214 1.5

V 38 OSG Yx 12 AT 7

CM.

s I

L22Li

NCTE_ CACITOR VALUES ARE Maw

UNLESS SPECIFIED

0272-101AF :50v A C355-401W 300v C 379- 1011F 450V Rh

0454-201AF C423-50MF C309- 001AF

1451

C452 125 MF

R452

680

300v • 100V • 75V

C25t .5MF

255v

C453 801AF

0454 .7. I.

201F

5453 470K

C2 26 C820202

VS V6 917 V7 vi 92 93 1005 4805 Gaut tAT7 6t04 8805 12,07

4 9 • 4 3

0458 1452 L452.60 .6" 145e 1455 0459 0221 C224

50001- 50001 50CM -{ 5000T 803 800 800

R2K4311, Ow

25806 125.17GT GAL5 6SL7GT 25•46T mus 611.5 1456 6507 2 7 7 7 8 8 7

1 :e23 r, Il

A Ve

vi8 V19

7.0TE 'SEE V18

NOTE

FOR 16c117 16Co3, 16C116,i60103:160104 7ci 0: C•13

i7C102

5000

SASS COW) GOUT G416

.0IMF

0.5MEG

nVet_ tibt C415

1255 0259

16C103, 16C104, 16C113, 16C116, 1613, 1614, 1615, 1616, 11C101, 11C102 AD.LCH. TRAP 47250C

V5 V6 Y I. isiVIIDEA c 270VIDEO

V 7 B 2to 1F : 3to IF CET 68CS 1.253#3C22,80 68C5 r _ _ __INV

il .

41

t1-1 V712AT 7 1/212AT7 I

C265

1254 5000 5257

47

0257 5000

V17 6AU6 AMPLI.

5352 22K

C351 022

535, 2.2 >AEG.

L255 C268

I —1F- - I .05

0266 5265 5000 3600

026 5000 255 v

5353 4 K 0354

Aims

C.313,0

I 05 MF

V 9 VERTICAL SWEEP GENERATOR a BLANKING 12SN7

5302 39K

R263 5301 1.5FAEG: 132.1 C301

001 MF

1257 165 Um

GREEN 1259

5268 22 MEG

5359 5360

0362 3900 5362 33K

2 0363 C365 , 470 Iwo

r-*-91tC. -

et 4.59AC ill - LIMITER -AMPLI. fi0 111:IX I 6AU6

VI8

CD e..3 :6AL5 TECTOR lie:z

1 o

T402

l 2 6

3,s3! 02 3

7 0425

5000 R404 5611

1402 21114

G4C17 120 22K

5405 5406

100st 47011

C•24 5000

1262 7 •

1261 110 1.84 NED

MC TRAP 1.5K

5270 !Om ZW

• • 12r. - 1011F

0369 6

255 V .0561101

C275

8272 •700 2 vi

+ 1210 R312eLj°1-MF 15K

350

i3OuN 53 n-

5275 MEG.

V15 1 X2 H.V. RECTIFIER

3 5 326 41W500 e.

1353 i f- -

C422 82K 1.01AF L 05

V20 5423 2C0

1220410 6S0 7 25L6GT T403 0 AFF IST AUDIO AUDIO OUTPUT u

. 'iNEEN

V 8 PICTURE TUBE

I6KP4 OF

°eel I7BP4A

VI6 25W4GT DAMPER

reor

5415 43 NE

0351 HORIZONTAL DEFLECTION COILS

53

16K1 16K2 ELECTROLYTIC CONDENSERS


C4I0

C3I0

C379

C355

C272

C451

C452q

C453

C454

C309

C272

C355

C379

C207

C213

C206

C220

1 en!. , 50V

30 rnf., 450V

10 mf., 450V

40 rnf., 300V

IO mt., 150V 300 mt. , 150V

125 mf., 350V

BO mf., 300V

ZO mf. , 350V, 50 mf

100V, 10Orrif. , 75V

10 mf., 450V

40 mf., 300V

10 mt.. 150V

TRIMMERS

RCE-090

RCE-092

RCE-100

RCE-100

RCE-100 ACE-110

RCE-III

ACE-I12

RCE-I15

RCE-118

RCE-118

RCE-118

RCY-048

RCY-059

ACT-060

RCY-063

.6-2.4 mmf.

.2-1 mrnf.

For high channel trap . 7-7 mrnf.

. 3-1.4 rnmf.

CONTROLS


Volume. O. 5 meR •

Brightness, 500K

Hor. Hold, 100K

Vert, Hold, I25K

Vert. Size, 3 meg.

Vert. Lin. 4K, 2W

Hor. Drive, 25K. 112W

Foci..., 100K

Contract, 2 meg.

WIRE WOUND

R430

R286

R38I

R305

R308

R311

R369

R435

R285

R45I

R220

?R454

R382

R380

RRC-I47

RRC-I44

RAC-146

RAC-146

RAC-096

ARC-127

ARC-I40

ARC-144

RAC-147

RAW-048

RAW-049

RAW-051

RRW -052

RAW-053

4.6 ohns•, 5W

43 ohm., 4W

20 ohm•, Globar temp corn

10, 500 ohm•, Globar

4K, 7W

COILS

REF. NO, DESCRIPTION PART II0.

L201

L202

L218

1226, 7

,L251

L252, 3

1254, 5

1256

L257,63

1.259 L260,71,

L26I

L264

L35I

L352

1,353

L451

L401

Input tran•forrner

RF choke

Cathode choke Converter plate

2nd Video IF

IF plate Video detector allay.

RF, 31 oh. Vid. choke, 165 ink.

Vid. choke, 165 mic.

71. 4.5 rnc vid. trap



Horizontal o•cillator

Hor. Linearity

Width control

Reactor filter

RF Head-end AM loop a••ernbly

Focu•

RLA-036

RLI-006

Ft LI-003

RLP-016

RLI-096

ELI-I10

RLX-029 RLF-024

RLI-038 R1.1.093

RLI- 100

ELI-108

RLI-109

RLC-091

RLD-016

RLD-014

RTL-096

RJX-043

RLL-0404

RLF-039

TRANSFORMERS


Vert. Output

Hor. Output Yoke

Audio IF 1st

Ratio detector

Reactor filter

Interstage

T301

T351 D301

T401

T402

L45I

T406

RT0-064

RT0-090 RLD-025

R LI-097 RTD-008

RTL-096

RTM-005

MISCELLANEOUS


X451, 2

B451

S202

S403, 7


Ion trap, single magne

Cut out Thermal

Channel selector switch

Pushbutton switch

Crystal diode Record changer -

3 speed changer

12"PM speaker

ma. RER -008 RET-003

RSR-002

RSW-082

RSW-083

1N64

PIS

S1212D-7

VI 6AEt4 let RF Amplifier j V6 6BC5 3rd Video IF Amplifier






V9 12SN7GT Vert. Blank'g & Sweep Gen

V10 12AU7 Vert. Sweep Gen. &Output


V12 6AL5 Hor. AFC Discriminator

V13 12SN7GT Hor. AFC & Osc.




V17 6AU6 Audio IF (4.5MC) Amp.

V18 6AU6 Audio IF Amp.& Limiter

V20 6J5 Audio Amplifier


TEST CONDITIONS






* Z. 5 volt range.

ttVoltage will vary more than 20%.




Short pin 3 of V16 to B-.

M denotes meg.



clockwise: Focus control. contrast

Brightness, vertical hold, vert-

ical size, vertical linearity.

Values listed may have a tolerance

of 20%.


54

16K1 16K2

SECONDARY TOP

PRIMARY BOTTOM

V20

&TS

251667

• Y 1

1/41.2 54

V13

1 25N7GT

VII

651101

C2726 C3550 C379

SHIELD

(D.-1251 (TOP)

L226 (TOP)

L227 (BOTTOM)

3451 3452

• 31? •T

• MS

BOTTOM VIEW


34 4725 16C

6 7

"C2-7 750-

11,111(10gA INPUT R 31,1EGI

3" °." 8279.3 3189J

150 _J

— 1.2)2 1.201-e4

100 ZOO

• 52020

R2I2

51K SIX

C209

r °

1219

1201

1216

•

1203

2 10K

6202D 6

2.20 0203

800

R203, 110

1121. L2 17

1.220

•

• V4

CONV. I s r I.F

VI 412AT7 ' 6865

6AB4

Psi RE

3

•• 0217 220K

12.27

C2751 I t-7

5

1226

5

0216

c21 500

4 6218 39«

C211 33

.2.oRF

V2

6 BC5

2.255

0251 224

• I C2L,

.251

0253

•7 K

C253

5030

0254 6511

ADJ CH TRAP

V5 47 25 MC V6

2Poo IF It 3•D IF

6865 "i.czeo 61365 1253 E_T 22

C259

8256 2 20K

0257 47

1.257 5000

C256

1.252 4-

R259 651(

8260 10K

0261 47

1.264 5003

VI V 7A V7B

Isr VIDEO 2 PeVIDEO

1/2 I2AT 7 '/: 12AT 7

11 1.265 l 9 L255 GREEN

F268 L259 I X16

l

1 • I 0

Z

L 264 -

I L.

0264 10K

C266e-.

31um

3600

1257 165 6.5

0267 6500

42.6e .

11268 2261EG

GREEN 2.270 1262

27 100 6800

1261

We' •hic

0269 TRAP L51

4270 1011 2w

C275

RED

-- UK •

e

1/27 22

• . 0273

C-272 tow

C274 6

0272 •700

Zw

Ni PICTURE TUBE

1 6K P4

53.-11215 11,416

11

C277 1 0277 2206

2180 efliGNTNESS

152136

122) 1223

7 9

•216 1.215 see r .00

o 1224 Le>52

5216 C2i2 7128106MK T. CONTROL

L- 5202C *S2 0 2D CLOSED ON CHANNELS 2IINCL

* GROuNOS NAM TO We ENO CHASSIS ONLT 21

25L6 GT

FOCUS CONTROL

% C214

12

C213

V38

OSC I2AT 7

451 TNERNA,

TRANSLA Cwan °UT POWER ----- 1

1,7 v 1451 85

14544F I 9 2

.7-6466 220

1000

C45) 8451 I45

3001,1F 4.6

545)

0:04

1451 550

C227 I

NEW CFO OMSSIS GRouto

_

2506

L403 F00.6 CON.

0427

250 v • C 9

R274 5CO«

O

imEG

1.260 V9 5000

V EERTNeleg .+1 BLANKING

I2SN7

225e inT012 4 1/2135 47,D• ccenRoi. 2 MEG

c26M5000 10263

534EG e

530) 11126

11302 3511

mc301

F

4

r'°3E166

r 002 302

ee

2

3

2306

6305 II 306 wear

WOO

31(1474

11 • e

6

R304 61311

f134,9e1

8307 2 2/46

125

0359 5360

R309 4700

`312 ,ZY k 2

307 5000

nee

•*308 _C308 »EA 10 25/0

40 C351 022 NE

8351 22 'AEG

C359 0561 1504 ,50«

5 C353 Cte ‘470

•

_4_ _

V I 1

6SL7GT

SYNC AMP

a CLPPE

VI 2 6AL5

DISC

V I3A

- 12 SN7G T

HOR CSC

110 1513 iSOK

0356 1 %MG

0357

360

O

536) lea

5362 330

0351 01 31F

1.375 - 05 MF

V1313

Us3 14- 12SN7GT HCR OSC.

I • I I— C363 6365 470 0100 61

• • be« 0364 P=436 220 g 000

••• 100 5364 27K

5565 004

tied NOR

5347 33K

C367 1800'.

5368 10K

5453 4704

C226 C222 1300 800

VS 06 vi7 v7 VI 62 v3 6005 6BC5 6606 12,41 6484 65C5 GAT?

•

1452 1453 1.454 L455 C4513 C459 C460 c461 C22, 5C00 5001 50001 5,0001 OCO Irna° . CM

R220,43 , 4•y

25806 ,29i7G1 EALS 651. 7GT 254,447 651.113 461.3 1456 6J5

614 co32 V V V vi6 vie • 619 V20

I.7 13 12 II' We\ -NOTE SEE 6 113

ROTE cAPAGT011 y40E6442 A» 144.165 SPECS»

C272 •IONF0 iSoy A C335 - 40 3006 • C379 -a • 4509 m

C454 201410 3006

cm, -toe 756

17

6 AU 6

AMPLI

r--

2

noo 220

402

C352 05PAF

V18

VSMC 6AU6

_ ttAITER -AMPLI

39 0E63

45 KC

7402 :6AL5

I CETECT

V19

37

8011

7

C406

5000

1.420 0405

0404 56K

1.402 c424 2 e = 000

5406

1002 470K

lO

•

4 VIO 6 12A117

MIMI MRS

R3I9 <2.21/2

•

R310 620

R3,1 •K

VERT LINEARITY

Cs369

e

wa g 7

c3,5„ec,

5371 vex 1511

25

ouYeuT

R 372

350 R

0370 11PC »I 1306 f 5000

11381 39

s. 28 C379

nes

03130 4K

30

0351 375

I 2

C373 OAF

290V

Via

H.V RECTIFIER

ce6:901

250V C371

.0514FOT

C4213 .25w

374 T

8322 150K

R323 150K

037 33K

R320 100K

3106

160

7

80

L -Ir

D» HORIZONTAL DEFLECTION COLS

12.

7406

94

RE o

5434

Fe

• •

S S

1.427 05 50

BLACK

RED

ORO»

11C103, 11C104, 11C105, 11C101, 11C108, 11C109, 11C112, 11C114, 1111, 1112, 1113, 1114, 1115, 1116 ELECTROLYTIC CONDENSERS

EF. NO DESCRIPTION PART NO.

C310

C379A

C379B

C379C

C4I0

C45I

C452

C453

C454A

C454B

C454C

C206

CZO7

C2I3

C220

C265

C275

311

351

354

361

362

365,7

376

378

30 mt., 450V

10 inf., 450V

40 mt., 300V

10 mi... 150V

I rnf., 50V

300 mf., 150V

125 mf., 350V

80 rnf. , 300V

20 mf., 350V

50 rnf., 100V

100 mf., 75V

TRIMMERS

RCE- 136

RCE- 118

RCE- 118

RCE- 118

RCE-090

RCE- 110

RCE- Ill

RCE- 112

RCE-115

RCE- 115

RCE-115

RCY-060

RCY-048

RCY-059

RCY-063

RCN-029

RCN-031

RCN-030

RCN-044

RCN-018

RCN-025

RCN-034

RCN-033

RCN-035

RCN-037

Hs Channel trap

1.2 RF

Fine tuning control

2nd RF

SPECIAL:

9 mrnf. , 500V

. I mf., 600V

. 01 mf., 1K V.

.02 mf., 1K V.

. 01 mf.. 600V

.01 mf. , 600V 10%

3900 mrnf.. 600V

1800 rnmf. .600V

500 mmf. , 20K V. 47 mini. , 1500 V.

CONTROLS


Vert

Vert

Vert,

Vert.

Bor. Drive

Hor. Hold

Hor. Hold

Volume.

Volume, Volume,

Volume,

Brightness

Brightness

Focus

Focus Contrast

Contrast

Contrast

Contrast

Triode

500K

Vertical

mf. cap

4.6 ohms,

43 ohms,

20 ohms,

10,500.

voltage

4K, 10%,

1.2 ohms,

39 ohms,

Sire 3 Meg

Lin. 4K, 2W

Hold 125K

Hold

2.5K, 1/2W

100K

On-Off 2 Meg

On-Off 2 Meg On-Off

On-Off

10K

500K

500K

500K

WIREWOUND

R308

R311 26365

26305

26369

R305

R365

R412

E412

R4I2 26412

26424

R276

26276

R424

26262

26280

26280

E280

C4I9,

26417.8

C301,2

26301,2

R45I

26220

R454

R382

26380

E375

E381

EEC-096

EEC-127

EEC-146

EEC-169 (B & 1) only)

EEC-140

EEC-146

EEC-169 (B & D only)

EEC-164 (A only)

EEC-162 (C only) EEC-170 (B only)

EEC-171 (D only)

EEC-145


EEC-145


EEC-164 (A only)

EEC-162 (C only)

EEC-170 (B only)

EEC-171 (D only)

REK-002

REK-003

KR W-048

RRW-049

ER W-051

RRW-052

RR W-053

RAW-058

FtRW-077

couplate, 250K rea.

res., .01 mf, cap.

Integrator, .004002

39K, 82K

20%, 5W

4W

Globar current reg.

10%, 125V Globar

regulating.

7W

10%, I/2W

2W

COILS

REF, NO. DESCRIPTION PART NO.

201

202

203

218

226, 7

251

252, 3

254, 5

265, 7

255

57

263

259

260

261

262

64

351

352

353

401

401

451

258

Antenna input 1st RF

high channel trap

One, oath. 1.4 oh.

Cony, plate and trap

2nd Video IF

3rd video IF and trap

Video detector assy.

Video detector choke

Video 165 ah.

Video

Trap 4. Sreu video Choke vid. plate 110uh

Video comp

Choke video

Norte. ose.

Hor. linearity

Width

For us

Focus Choke filter

402,452,3,4,5,6.

Heater, 2 uh.

RLA-036 ALI-006

RLI- 114 ELI-003

RLP-016

ELI-096

ELI-lb0

RLX-02 ,

ELF-024

RLI-038

RL1-093

RLI-100

RLI-108

ELI-161

RLI-109

RLC-091

RLD-016

RLD-014

RLF-043

RLF-050 (B & D only) RTL -096

RU-122

V5 6BC5 2nd Video IF Amplifier I VI 6AB4 lot RF Amplifier

V2 6BC5 2nd RF Amplifier V6 6BC5 3rd Video IF Amplifier

V3 12AT7 Converter- Oscillator V7 12AT7 Video Amplifier

V4 68C5 lot Video IF Amplifier

TRANSFORMERS


Vert. Output

Nor. Output (Early)

Hot% Output (Late)

Audio Output

Audio Output

Audio Output

1st Audio IF

Yoke

Ratio Detector

T301

T351

T551

T403

T403

T403

T401

D301

T402

RT0-064

RT0-090

RTO-114

RT0-081

RT0-082

RT0-086

ELI-097

RLD-025

RTD-008

(A di B only)

(D only)

(C only)

MISCELLANEOUS

REF. NCI DESCRIPTION PART NO,

X451,2 Selenium rectifier 350 ma,

Ion trap

RER-008

RET-003

RF tuner RJX-043 (A di C onl, I

RI, tuner RJX-045 (B ii D only)

13451 Thermal cutout ESR-002 (console)

S201 Switch-channel RSW-082

Y1 Diode-1N64 Germ.crystal IN64

Speaker, 5 1/4" PM S525D7 (B & A only)

Speaker, 12" PM 51212D7 (C & D only)

A - I7T1,2,3

B - 17T4,5,6

C - I7C103, 4,5, 7, 8,9

I) - 17C112, I7C114


V11 6SL7GT Sync. Amp, gt Clipper

V12 6AL5 Hor. Freq. Discriminator

V13 12SN7GT Hor. AFC &Sweep Ose.

LATE PRODUCTION

IV13 12SN7GT Hor. AFC 81 Sweep Osc.

V14 25BQ6 Bor. Sweep Output




V18 6AU6 Audio IF Amp.- Limiter

V19 GALS Audio Detector



TEST CONDITIONS



All controls set for normal sweeps,

Focus and brightness measurements

are in respect to B - with a 20K ohm/ volt meter.


Short capacitor C-453.

Short pin 3 of V16 to 13-



clockwise:

Focus control, Contrast, Brightness

Vertical Hold, Vertical Size,Vert-

ical, Linearity.

Values listed may vary 20%.

@ -AC Voltage Reading.

DNM -Do Not Measure.

1

1

1

56

For Production Changes, see Page gO.

SECONDARY TOP

PRIMARY_H., BOTTOM

1

us, Aucno é F TRANS

L260

7402

Y I

L254

® L 252 ( 70P)

C206 1,253 ( BOTTOM)

SHIELD

0.—L 251 (TOP)

L226 (TOP)

L227 (BOTTOM)

162

TOP VIEW

1452

12 95 TOY

BOTTOM VIEW

C451

1451

419C 9

846s

5212 R213 il--«11•51\•—•

5.1k II«

— C209 SOO

117 v

60.44 - 14521/1

11C103, 11C104, 11C105, 11C101, 11C108, 11C109, 11C112, 11C114, 1111, 1112, 1113, 1114, 1115, 1116

R209

R222 10K

VI

6AB4

207 1ST R.F

V 3A CONY

til2AT7

•

ADJ. CU. TRAP

4725 MC 1

L227 #3421.3 ' 22 I

C218,

216

0217 800

5218 394

1 Lz26 I

68C5 2ND R. F.

R221

V4

Is IF

6BC5

5251 22*

0229

1219 1220 1.221 1222 1.223 1224 1225

pie err szi" of

2 3

1721610212

001

1 T 12

1451 1M)

7 9

se'

lo

TUNING 40213 CONTROL

11215 02 .., 9.115..- 800

It 0214

• 2 1.5

V 38 OSC

I2AT 7

5202C •

DOTTED UNES SHOW CONSOLE CONNECTIONS

8451 THERMAL CONSOLE

GUT OUT MOOELS

R219 I

•70

0251 .5 MF

C227___ I

HERD ENO CHASSIS

L 251

5253

•75

3

0254

C252

IP

255

5

111254 MIR

NOTE CAPACITOR VALUES ARE w•F

UNLESS SPECIFIED

C3798- 10PAF 450v a.

ageil= re C45411 • 20MF 300V C4545 • Spur 100V 41 C454C 100W 75v

5451 L45I C451 4.8 X452

300 W 265 v

F 451 TABLE Fug MODELS •

1(451 -N.

921 v9 v10 94 2516 12SN7 724U7 6E105

7 4

55.A.

11452 125 MF

5452

680

255V

C453 SOMF

* 5453 e • 70K ST COW

SOD

C454A .7.

2Our

VS v4 v17 v7 VI vz v3 61105 CRCS 6At4 '207 6AB4 szecs 1201 3 4 34 9 • 4 3

5 -R4511 0458 1452 1453 1,454 L455 •- MAVX-0 0459 C460 C461 C221

5000 I 50001 5000 I 5001 800 C224

SOO 900

_-C242506 R22,43[1,

-••• 250[26 1255176T 65..5 ESL7GT 25,11403 61w6 6 ALS 1456 911127

7 7 4 7 8 8 7 3 4

920 ;..4 1_ :672 .r2 VI8 vi9

NOTE SEE Via

'2 I VI5 vs 7352 3724..4l4 R376

S•51 POWER

II TRANSLATOR

POWER

J1

ALL HEATER CHOKES Len. 54H

11412 QSMEG .1,2Luclà4E15

5000

11412 CONNECTIONS FOR CONSOLE MODELS

*FOR LATE MODELS 1774.5136 17C112.17C44.

C401 5000

A 01CH. TRAP 4725 MC

V5 V6

2fto LE 3Re IF

6BC5 Lzsseer 68C5

C259

e R256 220A

5000 FIT571

C257 Z.

47 1

5000

R401 220

402

5

el252

58

112

8260 10«

R261 47

C2601 5000

7

264

.

DET.

IN64

I a 41 0265

1255 0268

I — 1 es

9 a. • Ims - 2 54 iti64 c26,

.-1

2 4 !!I15: 15 106

C266 5265 5000 .1 3600

263

253 V

uH

R.2 PICTURE

4705 CON3

C26

5000

2.83

R352 22k

C35. 022 P.

533, 2.2 mEG.

39« 03

o«

00

1257 165 CH

V 7A

1ST VIDEO

./2 12AT 7

5267 6800

MEG. 5268

22

5266 27«

V78 2 weVIDEO

12AT7

C270 GREEN L262 7•

271

1261

Uri RED

5269 1.5K

NCO

L 165 Il8 7/2

R27

• l a 220 5270

.C379C3- C273 H3K 1051f .0570

R274

C74

11272 • 700

0275

V 8

PICTURE TUBE

178P4 A OR

ITBP48 e 30 LIN

511

5275 MEG.

10

R277 22011

8154HINESS 4,7276 e SOCH

290 V

5353 4 It 0354

.05oF

VII

6SL7GT

SYNC. WE

GLIPPE

VI2

6AL-5 DSC.

5262 2 m[4

11263 L5•11EG.

V9

VERTICAL SWEEP GENERATOR a

BLANKING I2SN7

'VERTICAL 5302 INTEGRATOR 39.. PLATE

5301 5151

R3I6

C301 - 1 .001 03021 MF eoz I

3

C305 5306

1000 OOK

11318 ,4 711

8307 2 2 111[C•

p304 6811

C106 mat

5303 25K e

C1312

4,00

308 3=4

0307

5000

=C314 1000

6 l2AU7 131_0111'3011 VIO

yiRTTPluCTAL 12,r

+8021 6

R319 C3013 2.2 0251A? MEG

VIT

6AU6

AWL I.

VI8

66

MO 1.5— LIMITER -AMPLI.

C3798 40 mr •

11310

., 820 0454C + IC310

- 100 - 30 R31' ." MF 46

VERTICAL DEFLECTION esot_ -

GREEN • 1 [

R3I41 28 I22KRO

R23.1

R31213LAQ(LI 5K

5

R321 C2133 150K

11322 150K

R323 '50«

.i2KV

VER m. -I 03794 8OLDI NE RR IT

359 11360 C 359

'50K

VI3A - 12 SN7GT AFC.

15011

R4r:

35 35e 6[73 150«

.ss, vie

5355 1505

5361 1MCG

VI3

U 63 14 12SN7GT

HCR.OSC.

2 C363 C365 s 410 MOO

•

1362 3 0364 3900 220 R362 33«

R364 R357 27« WIG 1361

.01 160 MI 680 R 365

00 r rR0v

0375 11051 358 .05 GOLD 123 ear UI

56 5040

5199 251

C369 6

R371 '5K V 1 4

25E106

R. OUT PUT

R 72

C37° 1 22

370eimE

C351 9381 C 380

IMF

g.LI e VI6

25W4GT

C382 DAMPER

.80 R377

----gee

1352 »OR L.7. 169.

1200

C3771( .5

370V

V15

I X2

H.V RECTIFIER T!'s

5378 13K

376 r 8375 9018 : 12

t* er).n. L 353 1

C378 47 16

C373 1511

1_ C352 .05 MF

5

79

1806

4 5 KC

7402 :6e/5

111 :CETECTOR 5ice

7

C406 1—•

5000

04

R404 56«

11405

10OR

a)

0406

470‘ 40? C409 1R 5000

5400 *Yee 210

5410 22K

C41 Dol •••

L402 2 LIN L Rn

: 5000

R411 22«

0412

.002 til

• C410 IMF

C•13

- 5000 r

0.5. MEG.

255 v

V20

6507

1st AUDIO

8415 4.7 mE

C417 5000

4

0371 .0571PD

e. 5423 8.2.1

25L6GT

AUDO OUTPUT TRIODE COUPL ATE

E479- 154 19 5

000

240 V

FOCUS

°K R4is coml.**. 50 R424

8411 504

R12 3

— 574 T .1141

-

2 7

I6A

13251 HORt205711.. DEFI EcT1.35

0422 .ocsss 11313

NEO

S

5425 1100

L401 1425[1

152

8429 275

C4546 50 MF

1K

11C110, 111C111 ELECTROLYTIC CONDENSERS


C205

C401A

C4018

C40IC

C402A

C40213

C4O2C

C403A

C40313

C403C

C403D

C104. 6 C105

C 108 C118

C365

I ml . 50V

40 mf. , 350V

90 rnf. , 350V

20 rnf., 350V

30 mf. , 350V

30 rnf. , 350V

100 mf., 75V

20 trif. , 350V

40 mf., 350V 50 mf., 150V

25 rnf. , 25V

1-5 rnmf., trimmer

20-50 trirnf.,trimm.

0.6-2 . 4 rotrif • , trim, Tuning trimmer

100-480 mmf., trim.

RCE-090

RCE-I30

RCE-130

RCE-130

ICE- 128

RCE- 128

RCE-I28

RCE-I29

RCE- 129 RCE-129

RCE-129

RCY-065

RCY-066

RCY-048 RCY-067

RCY-068 (her, drive)

CONTROLS


Volume 2 meg

Brightness 100K

Contrast

Hor Hold 100K

Hor. Sire

Vert. Hold 125K Vert. Size

Vert. Lin. 4K

Height 3 meg

Picture Z5K

Focus 10K, w. w. 2400 ohms, 7 w., w. w.

250 ohms, 5 w., w. w.

I5K 150V, Globar 2350 ohm• lOw.. w. w.

1209

1165

1361

R309

1305

R3I2

1169

1217

R371

R381 1370

1402

RRC -156

RRC- 154

RRC-154

RRC- 163

RRC-127

RRC-096

RAC- 156

RRW-073

RRW-069

RRW-071

RRW-072

RRW-083

COILS

REF" .1 NO DESCRIPTION PART MO.

L100

L106 L136

1.137

L138,9 140

LI51

LI52

LI53

LI 59. 3 156

1,154

L155

1.157

LI63

L401

L201

L351

1.352

L353

L..34, 5

Choke RF input

IF Trap

Choke RF

Choke RF heater for V102, V103

Choke RI "D" Tuner

(Late production)

1st IF plate

2nd IF plate

Choke Video detector

Video peaking, 140 oh

Video peaking, 220 uh,

Video peaking, 345 uh.

Audio 4.5 Inc Filter choke, 4 hy

Focus

Hor. osc.

Width and adjustment Linearity &adjustment

Damper 10 uh.

RLI-146

RLI-159 RU-136

RU-144

RU-154

RLP-018

RLP-019 RLF-024

RLX-033

RLI-148

RLI-149

RLI-150 RU-151 RLF -045

RLF-046

RLC-091

RLD-031

RLD-027

RLI-138

TRANSFORMERS


Hoe. Output

Power

Audio Output

Yoke, (early)

Yoke, (late)

Vertical Output

Vertical Output

Ratio detector

1st Video I-F

Video I-F

Inter•tage

Antenna input

T35I

T401

T202

D301

D301

T301

T301

TZ01

T151

TIO1

T203

TIO0

RT0-101

RTP-309

RTO- I 05

RLD-030 used

RLD-037 used

RTO-102 used

RTO-110 used

RTD-011

RTL-125

RTL-126

RTM-008

RLA-037

w/RTO- 110

w/RT0-102

w/RLD-037

w/RLD-030

(headend out.)

MISCELLANEOUS

REF. MO, DESCRIPTION PART NO.

Ion trap

Speaker 12" PM Crystal diode 1N64

FtET-003

S1212D-7

1N64

V101 6AB4 1st RF Amplifier 1

V102 6CB6 2nd RF Amplifier


V104 6CB6 1st Video IF Amplifier

V105 6CB6 2nd Video IF Amplifier

V106 6CB6 3rd Video IF Amplifier

V107 6CB6 Video Amplifier

V108 6CB6 Audio IF Amplifier I

V109 6AU6 Audio IF Limiter



V112 6W6GT Audio Output

V113 6AU6 AGC Keyer

V114 6AQ7 1st Clipper-Hor. Disc.

V115 6C4 Hor. Reactance Tube

V116 6AU6 Hor. Sweep Oscillator

V117 6AV5GT flor. Sweep Output

V118 6W4GT flor. Damping Tube

LY111_112:_llietLY.Q1tagejteri.-1

V120 12AT7 Vert. Sweep Oscillator

V121 6BL7 Vert. Sweep Output

V123 5U4-G B+ Rectifier

V124 5U4-G Rectifier

TEST CONDITIONS


Antenna terminals shorted.

Picture control at maximum.

Brightness control at minimum.

Channel selector at channel #13.

All readings taken with VTVM unless

otherwise noted. Readings may vary Z0%.

RF tuner measurements made from top of chassis with tube removed.

Line voltage 117 volts.


Receiver power disconnected. All potentiometers at maximum.

Readings are in ohms bi may vary

20%. Values on RF tuner (head-end)taken

from top of unit with tubes removed.


DNM -Do Not Measure. 1

58

1 1

11/1•1T. VERT IMR.

11135 HOLD AMU

4.1 C[Z] R217

[ PCTURE TILT LEVER

CONV 09C V103

TIO1

2FM R-F 1/102

iST R. F VO

HEAD -

UPC

Im AUDIO

F TRIWS

5203

AUDIO TAKE-OFF

L.63 use

VIDEO

DE' ut rm

3« 1E8 • 251/AL 14106 TRAP 6086

T201 RATIO

e 11;252 •

DEI

SIMA

1.1,5›,•

2» PER 47 250C TRAP

ow m IF &H

47255C TRAP L44 poem

Mo

1.1 .1111 •

11/

MANUAL CENTERING y‘ CONTROL

MN TRAP

DEFLECTION YOKE ADJUSTbENTS

FOCUS COL ADJUST

VERT

OLrtP

T301

MOO

CROKE 1.40

OUTPUT

POWER TR.886 1401

TOP VIEW

)DEFLECT ,ON YOKE ADJUSTMENT

C36541I/ NOR DRIVE

NORIZONTAL L35I 005CiLLATOR

VI 16

FOR "EARLY" AND "D" VERSION TUNERS, SEE PAGE 100.

1 uos

RANSL AT 0R POWER

BACK VIEW

V102 6CB6

5100 SHOWN IN CHANNEL 6 P0SITON _ 2_1e_ff 7,21_

6

L.104

UO3

L102

LIO

C102 43

117V

BLACK -RED

11116 IBA

C103

C114 12

•

U14

LI35

L _ •W VERSION

••40 , RED

Vn

R 0-TEL

O

YELLOW

YELLOW

VI23 SUNG

RECTIFIER

y124 5u4G

RECTIFIER

R102

IRK

8103

5600

C112= 800 Ic,o

11, V103• 3.9

1 12477 2 OSC.

2

3.311

115

4Clek 36,

#

• 1.5

Cr2I e 33

36

Cutl .8 -17

e

FINE TUNING

C.08 Q6-24

10

V1038 ,R, ¡I? AT 7 CONy C119

71 •

11112.' 1OK

18,3 220K

- 22K MF

00

I •

0382 05WF

C'

8114

160

S 000

1%1 COO

1

IDI

2 RED

ANC

EN 250v

V108 4 51410 AMP

6086

175V

Eit 250V


1203 4.514C

225 '/,.e9 ; :220e. LIMIER

II 50

C2I0

L R222

et< c2

•

217

R223 4 700 IN

240v

224

0221 800

4000 R201 %VW 00«

R202 470K

RATIO DE T. TRANS.

1201

V110 6AL.5 RATIO DE T.

à 020310,120

2 0,E

J201 5201 TV PHONO »Cy__

2

R20 22K

ImC208 - tgy

00CIMF WNW • R205 021ÎT

nr. CON .005

.001

4 7.25MC ADJ. IWO. TRAP

51

L I

ADJ AUD. 47 25

V104 TRAP

6066 Itp 1ST VIDEO y

C i 1. LI61 *0153

C173

•4 800

8. 250v

4123 k 14C TRAP L 39.75MC

V105 C' 715EILK,4 V106 TRAP VOI

210 VIDEO

R157 47

1864 6C 68 L156 DETECTOR 86 60E16

I F 160V C156 1-,

3R1) VIDEO EeTia --4 GI 1

200V I

L152 «

R158 1000

ORANGE

IS

2011

5

820

RIEN

LI

800 RI61

0158

15

F 11166 800 470

• 0401C

R•02 • 2°*2. 2 350 IClw

R257 3000 2M 250V

11256 V-0131

33«

VII3 6426 AGO

RETEN R251

4.6800 Ii 1.251 SEC. CC MOTH

C254

.25 MI

8253

,0011

R252

C253

.05 MP

r. To% OF•T351

F 'To46

'ef T351

8259 SOR

8256 150K

11254 2211

L401

el .C40°14'-FA 350V

LI37

13 ,250v

f VIII 6507

1ST 40010

'&16 C208

R209 2«:.0441EGI-7.1 °,N•3,- VOL CONT.

0021M

R2I 6.e

MEG

105V

IC

8211 22011

C2 11 R212

Coo 8

8213 R214 47 150

11C110, 11C111

VII2 6w6GT

AuD03 OUTPUT

R216 11 00 2W L20

260v

4

35,

FocR,„1:0: F00001J:CR041221. 0

COIL 7.218* 8.28

BLUE 120

R180 AL .1 200

C2I3

2 MF 008

MF

221 6

• L5201

• C403.• 200W 350V

L'63 4.5MC AUDIO

TAKE OFF

RIAS IOK

C160 5 R162 3

075 ew 20

2741

e

RI?

140,3

40162 800100

111M 250

V107 RI63 6086 3300 VC. AMP

B 160V 8+600

• 800

PICTURE CONTROL

869 4 25K 50

MF RITO 350v

5600 •

Ce6.6

MF CI68 6

R 73 3000 2W

07

345,4,

1664

yN C3 75

MF

470

VII4A 6407

SYNC. CLIPPER

135v

R386 10K

R378 141 .-884~ 470«

ROSI

R375 •-

120«

0312

,•, ROIS R C 52

• 4711

.C.%)

*V120 12457

VER/ IAJLTIVIEIRATOR NEIGHT 85,2

0306

47K

C030:.192. ••••

Tar

0307 470

'car R317 1201,

-•

R3/0 100K

N

R308 •7K

125K

Rat 56K

13IIGHT-NESS 0176 R165 100 MF

• 11

R174 470K

R178 27111

VI22 PICTURE TUBE

178P4 8

2 RITA

620K

.00:160: # 47

df •

C'70008

.00,1.1F 1118.

BE BOOST

4

314EG

C303

ROS

VERT. .HOLD

R307 2206

3

110 304

« • .06IM

330111

I6V

V 68L7t21 VERT. OUTPUT

T301 5 028v -2- VERT. OUTPUT

- TRANBSL. j5,0

•

8304 270

R3 41 C402-C VERT 100MF LIN. • 75V

.4;13go

R303 470 1111

250v

•C401 -8 SOME

- 350v

* NOTE

V1148 i640 7 HOR.PNASE

(01-c-e325

C352 120

R354 MEG

R335 I ASEO I

250V

0354

480 1.4F

COOFe

8306 wee.% ISOK

R353 1' 47K

CO?? 4700 8358

8/EG

ROS AIR

5r C355 8 0561 0356 .0082 CO MF

Ms MT

V115 C) 6C4

NOR. REACT 0359

IS V

470 1800

2561 2SV

8360 27«

R359 e,C360 68K t 220

8361 1008 NOR Z

11Oj4

R0,0 18

8069

E

R363 470«

N R362

L35, 450

VII6 64u6

NOR OSC, 130, :31(64

836s, 47° 150K

C363

0362

00

R364 8211

8367

VII? 64v5

NOR OUTPUT

8

WI GLOBAR R370

150v

8381 250 5w R371

2 366 74/

380 .5111F

2 214EG 8382 2

2W

11 1250V

390

4/ n

3

ME

1811

C402-8 - 3061

350V INT

r-C1301 vER t YOKE

3

/1nCR023.5,YOK

8 y

L__

R301 2200

R 383

1200

C30

2

30(1 F2i2"OÓ

1551

TC VII9 183

14.V. NEC T.

8377

.1.1,54IF 0369

500.517, IW

8 BLUE

CWole; H

6 L352 i

To BEYER PLATE

CNT

fen L353

C361= 11ORZ.LW

351 2 011

L355

8373 .#416 gox

L354 VII8

250V. - 6•40T • DAMPEF1

I A 811 BOOST

lORA

00356.2,

500./

180

C381

36

250V

R372 2.7 MEG.

4711

IN EARLY PRODUCT/ON RECEIVERS THE FOLLOWING COMPONENTS WERE USED WITH DIFFERENT VALUES AS MARKED:

8115 -91000 0108 - .0021AF RI59 - 12 000n 0153- BOOM R175-10000011 8 8200011 C156-24mim RIEN - 3300011 C356 -.015MF R215-10000 R2 18-180011 R 306-33000011 R402-20000

v120 IIMS 12/W7 WITH TINE FOLLOWING CIRCUIT VALUES R 303 -15000 R306 - 2.2MEÇ 8308-8200010 C 30• - .04 MF C306- 0033MF

'REWIRED

*0 OPEN RESISTOR DOES NOT INDICATE DEFECTIVE COMPONENT.

e -INOKATES TEST POINT.

ALL CANACITY VALUES ARE IN MIME UNLESS OTRERYCSE 51601 100. ALL RESISTORS ARE ¡ WATT 9

C403

1111, 11C113, 11C115, 11C111, 11C120 ELECTROLYTIC CONDENSERS


C310

C379A

C379B

C379C

C4I0

C45I

C452

C453

C454A

C4546

CI04,6

C105 C108

C118

30 mf. , 450V

10 rnf. , 450V

40 rnf., 300V 10 rnf., 150V

I rnf., 50 V

300 mf. , 150V

125 mf., 350V

80 mf. , 300V

20 mf., 300V

100 Inf. , 75V

TRIMMERS

RCE- 136

RCE-I18

RCE-118

RCE-I18

RCE-090

RCE-110

RCE- 111

RCE-112

RCE- 134

RCE-134

RCY-065

RCY-066 RCY-048

RCY -067

1-5 mm!.

20-50 mmf.

.6-2.4 mm!.

. 8-1. 7 mmf., fine

tuning control

CONTROLS


Brightness,

Hor.

Vert.

Vert.

Height,

Hon. Volume,

Volume

Volume

Contrast,

Contrast

Contrast

Triode

250K,

Vert. . 002

4.6 ohms

4K,

31 ohms, I. 2 ohms,

5600 ohms.,

20 ohms,

1500 ohms

1400 ohms

22C0ohrns

500K

Hold, 100K

Hold, 125K

Lin., 1K, 2W

3 meg.

Drive, 25K, 20%, 500E

(I7C120 only)

(I7T7 only)

2 meg. (I7C120 only)

(17T7 only)

WIREWOUND

I/2W

rnfd.

mf.

140V

R276

R365

R305

R3I1

R308

R369 R4I3

R4I3

R4I3

R280

R280

R280

C419

R4I7,8

C30I, 2

R45I

R380

R454

R375

K282

R455

R452

R382

R28I

RRC-175

RAC - 173

RRC-174

RRC-I27

RAC-096

RRC-140 RRC-176

RRC-182

RRC-I83 RAC-176

RRC-I82

RRC-I83

REK-002

REK-003

RRW -048

RRW-053

RRW-054

RRW -058

RRW-079

RRW-081

RRW-082

RRW-088

RRW-092

couplate-. 01

500K

Integrator -. 001

mf. , 39K, 82K

, 5w.

7w Globar

1/2 w

5w

, 5w

Globar,

5w

COILS


L100

L106

L136

LI37

LI38,

9, 140

L25I

L252, 3

L254

1255,6

L257,

263

L259

L260

L261

L262

L264

L35I

L352

L353

L45I

L258, 402,

Choke RF input VI

Trap IF

Choke I. 4uh o•c. "K"

Choke .56 uh. V2, V3

Choke RF

2nd Video IF

3rd IF coil IS trap

Video detector aesy.

Choke 31 uh. R.F.

Choke 165 uh. video

Video comp choke

Trap 4. 5mc video

Choke 110 uh.

Choke video

Choke 130 uh.

Horis. hold

Horis. lin.

Width control

Filter choke 452, 3, 4, 5, 6.

2 uh. Heater choke

PLI -165

RU-159

PLI- I 36

RU-I44

PLI -154

PLI -096

RU-110

RLX-035 RLF-024

PLI -162

PLI -093

PLI -100

Ft LI-108

RLI-161

PLI -109

RLC-091

RLD-016

RLD-014

RTL-096

PLI -122

TRANSFORMERS


Hon. Output Audio Output Yoke

Coil 1st Audio I-F

Sweep Output

Output (I7T7)

Output ( I 7C117)

Fil ., VI, VZ, V3

Filter choke

Video I-F

, Video I-F input

Ratio detector

Antenna input

T35I

T404

D301

T401

T301

T404

T404

T45I

L45I

TIOI

T200

T402

T100

RTO-114

PTO-032

RLD-040

PLI -097

RT0-064

RT0-081

RT0-082

RTF-002

R T L-096

RTL-126

RTL-127

RTD-008

RLA-037

PRODUCTION CHANGES MODELS 17T7, 17C113

17C115, 17C117, AND 17C120

REDUCTION OF CHANNEL 6 "TWEET" - To reduce

channel 6 "tweet" the choke L256 was incorporated into

the detector sasembly which carries the new part No.

RLX-034, see below. When replacing the old assembly with

the new one, it will be necessary to short out the old L256

c hoke.

SCHEMATIC DIAGRAM

SCHEMATIC DIAGRAM

* SOME RECEIVERS USE TYPE IN60

VIDEO DETECTOR ASSEMBLY VERSIONS

To facilitate replacement of the diode an improved design

RLX-035 (marked with a red dot on top of the assembly)

was used to provide top mounting of the diode. It is merely

necessary to slip off the cover of the assembly to expose

the diode.

In some assemblies a special high efficiency diode is used,

marked with a red dot To maintain the same Q of the cir-

cuit and to obtain proper IF bandwidth o resistor of 12,000

is connected across the diode. In replacing this diode

with normal stock do not use this resistor. In case of

doubt check for proper bandwidth.

MISCELLANEOUS


Cap-HV rectifier REC-006

X451,2 Selen.Rect. 350 ma. RER -008

Ion trap (for 17BP40) RET-003

Ion trap without spring PET-012

PM Focus unit RLF-049

B45I Thermal cutout RSR-002 (console)

J-5I Speaker, 5 1/4 .' PM 5527D (17T7)

LSI Speaker, 12" PM S1212D (con•ole)

YI IN 64 Crystal Diode (Used in RLX-029)

Crystal Detector (Used in RLX-035)

S451 Switch Part of RRC-176


V7 12AT7 1st & 2nd Video Amplifier V2 6AK5 2nd RF Amplifier


V4 6CB6 1st IF Amplifier

V5 6CBC 2nd IF Amplifier

V6 6CB6 3rd IF Amplifier

V9 12SN7 Vert.Sweep Gen &Blank'g

V10 12AU7 Vertical Output


V12 GALS Hor. AFC Disc .NO VOLTAGES

V13 12SN7GT AFC & Hor. Oscillator

V14 25BQ6 Hor. Output


V16 25W4GT Damper



V19 6AL5 Ratio Det. NO VOLTAGES

V20 6SQ7 lot Audio Amplifier

TEST CONDITIONS


Measurements are in respect to B- with

a 20,000 ohm/volt meter.


60

1111, 11C113, 11C115, 11C111, 11C120 ADA CH. TRAP

4100

120

• - stoo- s7ovna--1/1 CHTINNE-C6- 8.011TI-ON 6VAK25

VI 6484 11T RF

ROO 7 O0

103

TWO 1

DI-POLE

to

1.01 B •

3

r

1.102 3100

/4.0V LrO7 021 2 wan,

C123 680

S1004

o

o

ItLX-029 MAW) USE ItLX-035

ALX-034 (EARLY) USE ALX-035

TUBE AND TRIMMER LOCATION

cn7

COW

o

4.02 Ile C112

40°

V3A -- 3.9 V 36 OSC CONV

PAM AT 7 (1, AT 7

5600

C.29

10

13« L .36

Crol CMS

2 %N.1,,.

Cr

1013111.6 •406.1.06 .41,1046 ▪ USIOLTPROSC/014111144.1,44 1. To3146.4144010 oà-44.114343 t/440

:ur :a = GIO, MS MOD tu, segt, c. um .74444 C40. SS 5004646

4 .1411 /MN 444.4 IlC41016 WO« 4.1/4413 /44,4“ En

On* AA 40•1004.44111, Is1111.. 011100. .01.4•41/141/41.11411.610

.1011144104. • 110114611.6144 /OR «MY. 111.0.11.1.00.113,40411•6461e66 1111.614416.043 /OS 4.116.140 TO.

C 1 II

.R MN 13 111

ROO 4

I K

V4 In 6C86.

4725 TAap

Ve' /40V

o

1245

R

252

26

C 255

5 1.231 J 7 140V Ire'

cej 141

5000

4253 1000

C251 .5 UF 1 ,11

4251 IK

C254 > 1 5000

5000

6202 5000

C257 5000

1

42571 00

4256 .4- 220K

V• Y 1 2owt IF. 4f "C 3•• LF DEI V5

6C66 ,253 C280 6C86 1N64 22

6299 I ill h_ 140V 40V •I Cl2(65 .. 1 If 5 , - , '..1.. 1' 55 C268 I

140V 7 r L252

I 4.44 C267 ii .os

I - 1 s ..._ 0

LI2,. 4264 1,28 -31, • 4 I.

C866 -C-41 1- - ii-.26s two 1 so

.±e4 '6B541 82

R 260 s 1K

C 258

5000 4281 2200

263 5000

•

•

I e• teov

14. 250v

I FILAMENT

10011 TRANS.

61$;$

LIST .011111

CI)2 .0541.F. v

1.1341

= C.122 C. 00 e0aT

5452 • 451 _J

2 14 13.91 300 kir :MI 'THERMAL C451 451 265V 550 CUTOUT

C.I 46

- -7-14:14FUSE RE4PCES

-- C 452 125 kW

T1:10047ETLARLeEuT°In 37•57 -1-

1 451 117v

4452

ARC

6500

•25

900

255 v

C 453 80,4F

C4344

r

20 Mr

260 czn 5000.21-

12

6293

110 - -

qe) V9 VO 04 251.6 .2547 t2.607 6086

4 6494 1.452 L453 1454 1•55

5000T C459 5000 4S•

»sie MItocTc... -A-

VS 06 v IT 6 C86 61.86 64u6 3 4 3 • 4 3

jII 1451

v 7 12417

C460 1C441 5000 5000

VID 6 507

25806 12514763 641.5 651.7GT 25 W4GT 61106 6415 1456 2 7 714374 8 7 3 4 4 3

6462 VI3 012 vn v16 VIS V19 NOTE SEE V to

9452 _ROWER

ALL HEATER 00.123 1.80 l2 VR

NOTE CAPACITOR VALUES ARE Miff UNLESS SPECIE. ED C 379 4. 101.1F 450V Am C 379 8- 401F 3004 • C 379 C• 101.F 150V • TRANSLATOR

POWER C 4544 -20 WE 300V C 4548 b0014, 754 •

REDUCTION OF LEAKAGE CURRENT - Capacitor

C352, from B- to ground was changed from a value of .05

mfd. to .02 mfd., UCC-041.

BOWING OF VERTICAL LINES - In order to improve

horizontal linearity, capecitor C373 in horizontal linearity

circuit was changed from a value of .1 mf. to 0.06 mf.

3000

• -

V17 6AU6 AMPLI.

_

2

Z5V r

40004000

391°?

env

6 130

403 SCCOI

•

L257 165 P»

70

V 7A 1wr VIDEO lis 12AT7

GREEN 1.259

4267 61100

4265 22 WEG

4266 22K

C269

V 76 2 we VIDEO

12 AT 7

300V

65V

c2 GL1 N 422.2E ,67,

,554-r11 , - 70 à

r.-11141 L2.0 rE "r" L261

.111 / ten

R269 crea• .910

427 4. C379C • 1 C 273

220

4274 111EG

R273

10 uf .051147

62.74

4272 4700

6275 1.264 1(-• 00000 F r 3e14

4275 11EG

V 8 PICTURE TUBE

17BP4A

2

C277 1 6277 220K .2 1.47

8416.711E9S 26

V.

SOO«

-417011°

4258 PICTURE 4310 470K coene- 71"

C261

5000

a-

HI C 351 .022

4351 2.2

(G.

4263 t.51/1EG.

V 9 VERTICAL SWEEP

C 305

4701 GENERATOR 81 2 5 2V BLANKING \ .• 12SN72:1 _I ,J._

ryikr-a. i.- --w-so2 1 '- 4', I INTEGRATOR 394 i 6 ¡PLATE --..ven.--.16 3.6 S .36: :

I R301 cum C 302 I. I.:c'DKeG r

I 62K 2 --r . 3.4

L Li CX.PI

4306

10011

4307 2.2 REG

see 11 3,]_476 300i 100 1 6 1V2 AU7 511.6

C 312 VERTICAL UF

C 3,4 1000

C307 304 47005 12000 68K C306 1E164.7 .114f c•718.

R 305 4308 1025C3013 2.2 125« 3 MEG WV AEG

43.9

VERT

▪ 360 11 359

17;1947 Îierc 150K

310 20

8

VERTICAL 7071.261106 0301

GREENr

1301

°UTPUTt2oof. 250

C• 548 FC710

11311 Air WE

LINEARITY

314 2.25

REO 4315 2.2K a

_J >5312 1.3 5

1321 0431

4322 150e

4323 HO«

i2KV

ro I.164 O Cl?? • Ran 6 RS"

-1c3r3a tour

MJ,

• 5

-

VII 6SL7GT SYNC.AMP &CLIPPER

V12 6AL5 DtSC.

4354 4711

C?,16

VI 3A , I i12 SN7GT

A.F.C.

100

1056 7 MEG

4358 43011 4311

U88 •• 4362

3510

4355 180K

4357 11EG V.--.-.C36 or

14F

V 138 ',/-12SN7GT MOR.OSC.

4 c.w 6369

- 4366

C364 220

4364 27«

4365 ace

(7110. 0915 213.13.

681C

1351

04.0 CREAM

V15 6969 1 X2

111367 6 14.V. RECTIFIER 5" c3se 7351 < 5000

Fo-

25« 04.

urn

C367 1800 -

4368 C366 OK t000

V14 7 25806

etl OUTPUT

5

I 6g370 iR370 - ....*

1 M: 16 C3 .34 Of i C e?

s . 7 .

9500

•

9 4374 • 5 C371 4

500 204V

1 13

180

5

1352 1.011. LIN MM.

25W4 GT DAMPER

C377 5104

637351 - C374 UF

C 352. R C 371_1_ 051410

4378 3.31(

430

2

7

450

3

0351 HORIZONTAL DEFLECTION COLS

4453 r' 470K 5.

T1F 4.541C_

VIE 6 AU6

UMITER-AMPLI. 22SY

CI IR - 1

3

4403 104

4 C1106 I)-9000

C425 4405

r- - - - -1 V I 9 'GALS t DETECTOR

léo I .0 13.60

6406

C 44045000 100K

404 5611

'CO %lee L 80

470K

1- C424 5000

.311

120

3.0 4408

I I , 4- .11407 -_C409 I 71 I. 5000

e -

"10:

4443 22K

02111 .1.1F

•11 22K 1 14.446

C413 I 1 334

6412 s000 r .3.0.5.K. 1

.002 e" T\ 5.0c. •16

.011.44

410 lee

V 20 6507

III AUDIO

4415 .171.12

6417 5030

4

2

C•22 .005 14F

V2I 25L6GT , •734

AU= OUTPUT/65V I31-v1 Gan.

TRIODE COOK AT E re-0114419 5

°Lac. .0 , 11000 F

11We ei 2.313 500« 1

.003 I 114417 I" 1

0V4 4420

/ 3 2000 mex

4428 NOW, •74

og-

L51

K

(port No. UCC-046). At the same time the cathode (pin 8) of

horizontal output tube V14, 258Q6 was connected directly

to ground, removing R381 and C381. In late production re-

ceivers ion trap RET-003 was replaced by a cunifee ring

type RET-012 to further improve horizontal linearity.

IMPROVEMENT OF 1ST VIDEO IF-To equalize gain of

the staggered IF stages resistor R254 was changed from a

value of 33,000 ohms to 27,000 ohms with a port No. of

URD-083.

6. CHANGE IN AUDIO IF-The 5000 mmf. cossoci3ors C402

and C401 were changed to a dual type of o value of 4000

mmf. each with the new part No. RCN-047.

•

PICTURE TUBE SOCKET

61

19C101 ELECTROLYTIC CONDENSERS

REF. NO DESCRIPTION PART NO,

C22A

C22B

C32A

C32B

C32C

C35,6

95,6 C45A

B,C

C4SAB

C60

C91

C92

C93

C97,8

C115 CI20

C112

30 mf., 450V

200 rnf., 50V

15 mid. , 450V

15 mfd. , 450V

15 rnfd. , 450V 60 it-if.. 300V

30-30 inf. , 450V

30 inf., 50V

30-30-15 mf. 450V

30 mf. , 50V

SO mf., 25V

90 inf. , 450V

100 mf., 25V

200 mf., 50V

30-30 mf., 300V

IK mt., 6V 4K mf., 10V

TRIMMERS:

RCE-103

RCE-103

RCE-I13

RCE-113

RCE-113

RCE-094

RCE-114

RCE-019

RCE-048

RCE-017

RCE-I08

RCE-104

RCE-009

RCE-106

RCE-096

RCY-062 Air for TV tunini

CONTROLS

DESCRIPTION !UV NO. PART NO.

Volume, 2 meg.

Brightness, 2 meg. Contrast, 500K Vert. Hold 2 meg

Vert. Size

Vert. Lin. 2K, 2 w.

Tone 500K

Height 250K Ho, peaking 10K Hor. cent., 500 ohms, 4w, w.w

Vert. centering 20, w. w.CT

Focuti 300 ohms, 25 w.,w...R74

SPECIAL

55 ohms, 7 w., w. w

2.7 ohms, 1/2 w.. w. w.

R69A

R84B R84A R3S

R40

R69B R36

R50

R87

R88

R73

1351

RRC-079

RRC-117 R13C-117 RAC- 114

RRC - 133

RRC-079

RRC-I15

RRC-I16

RRC-120

RRC-121

RISC-132

RRW-046

RRW-050

COILS REF. NO. DESCRIPTION PART NO.

LI

L2

L3, 10,

19

L4

L6

L7

L8

L9

L11

LIZ

LI 3

LI4

LIS

LI8

L20

L21

L23

L25

L5,22

24

Filter choke, 7 hy.

140 ma. (plate supply)

Filter choke. 7 hy.,

140 ma. (plate •upply)

Choke R-F coupling

Hor. linearity

Ono. cathode

Width control No I

Focus

Deflection yoke

Filter choke (focus)

Audio I-F

Filter choke(plate .ply)

Plate video amplifier

Plate video amplifier

R-F coupling choke

Choke-cathode I-F.

Horizontal speed

Width control No. 2

4. 5 mc trap

Audio trap

RLF -018

PLI -019

PLI -006

RLD-014

PLI -032

RLD-018

PLI -037

RLD-023 RLF-032

PLI -090

RLF -031

PLI -099

PLI -038

PLI -003

RU-033

RLC-091

RLD-019

PLI -III

RLW -002

TRANSFORMERS


Vert Oar. Blkg Vert. Output

Hor Output

Power

Audio Output

Yoke

FM di•cr

1st Video I-F

2nd or 3rd vid. IF

4th Video I-F

Antenna input

T27

T26

T9

T25

TIO

T7

T1

TZ, 3

T4

TO

RTM-007

RT0-074

R TO-088

RTP-303

RT0-084

RTD-009 RTL -101

RTL -IO2

RTL-104

RLA-033

MISCELLANEOUS

REP. NO, DESCRIPTION PART NO.

SRI

V3,4, 5

7, 10,13

15,21,

V9

V8

LS1

Selenium rectifier

Ion trap

Tube •ocket (octal)

22,23

Tube socket

Tube •ocket

R-F Head end A•sly

Loudspeaker-I2" PM

RER -005

RET-006

RJS-030

RJS-139

RJS-142

RJX-041

S1200D7






I V6 6AL5 Video Det. - DC Restorer


V9 6T8 Clipper - Hor. AFC Disc.

V11 6SN7GT Vert. Sweep Oscillator-

Vert. Sweep Output

V12 6SN7GT Vert. Sweep Output

V19 6AU6 1st Audio IF Amplifier

500K

300Ku

V13 (;5117 Reactance Tube & Hor. Sweep Oscillator


V15 1B3-GT H. V. Rectifier

V16 6W6-GT Hor. Sweep Damping

V17 5U5-G Rectifier (Low B+)

400K

V18 5U4-G Rectifier (High B+)

V20 6AU6 2nd Audio IF Amplifier


1 V22 6AQ7 Audio Discriminator Amp. 1

1 V23 6V6GT Audio Output


* Voltage varies with signal.

All readings with voltmeter 20,000

ohms per volt.

1

62

19C101 mat

1.10▪ . ▪ Ina, 1.0

11

*D▪ a

Mal

IRS

lagtga•

a11111117.10., 1110a/I111••1

e

cD0 a.

714.1.1a.

••••••

o

4.11.11 1.1

CD@®10 e

aa

oe® e

Ce° eLt

Lee

TOP VIEW

ea nee n77•1•1• •411111alx•

PRODUCTION CHANGES MODEL 19C101

All but a limited quantity of the early production receivers

incorporated the changes described in the following para-

graphs.

v 0-4 MAPS', IR

65,16

SID

noc rem«, • le/no fawn OE

•• • sralatMI er.004•075,N0 ""' nee .7=0.1ger

ri50152. In`fe'elf,Xt

v.9 1ST RU070 If

•

03 4. r GIO4 •7

SIL

OIG GALS Ile.711 OR Popen..5 WIMP! CT Lem COmICT 'NI.] 10

020 200 ALIC00 14

6006

120 092 566 I

C76 RS 5090 22«

SALO 60 To. yaw,

713

4300 114

e—nrr‘-eZ:tr"e0 o 10K

5

10K • •

Zelle› MI .14 .

MI:re

e .1

123

16

erfIrt -74

"i11 1.3s-L Sl•

RIDS MEG

C42 100

C

•00000

04 220

026 OSCILLATOR 1/2- 7F 8

C 05 C. I2 6

012

TELEN SON TUNING

7

.21 r - eràc LINTER 50 65147

V2A GONVERTER 1/2 - 7F 8

CA'

712 47 eCiro

93 04 03 ITT VIDEO IF 2NO I0E0 IF 300 veDE0 If

AC7 60C 7 SAC,

i ST FIX If

098 CoSCRNAINATCA 92 - 678

12 NO MX rE

R5 02 3900 1006

99/1 Ake.0 CirPPER 112-610

C46

045 3900

:4Ét 47 C47 53e 000.

0278

0n 960

—w-C39 0.11f „›,

I0 REG

7 7 R 7 7 5 I 7 3 2 2

2 7 2 8 7 2 8 • e

LIAI 1100026111104/0055 923 922 021 020 VIS EIS N4 043 Ye vm 99

INCREASED RANGE OF HORIZONTAL PEAK CONTROL

A 2200 ohm 1 watt resistor, R77 (Cat. No. URE-1057), was

added in series with R50 to ground, to move the range of

operation of the peaking control to a more favorable point.

REDUCTION OF VERTICAL WHITE BARS IN PICTURE

To reduce vertical white bars in the picture as the Horiz-

ontal Peaking control is adjusted to one of its extreme

positions, on 82 mmf. 1500 volt mica capacitor (CI23, Cot.

No. RCU-289) was connected between terminals No.4 and

No. 8 of T9. Another capacitor (CI24) of the same value

and rating was connected from terminal No. 8 of T9 to

chassis ground.

013 07 96 YS 04

VOA

'F2 eve

56513 5004 TONE

R53 270

INCREASED AUDIO SENSITIVITY-The audio sensitivity

was increased by reducing R60 to 47 ohms, 1 watt, approx-

imately half of its original value. Some receivers will use

two 100 ohm, 14 watt, resistors in parallel, in lieu of the

single resistor Cat. No. URD-017, 47 ohms, 1 watt.

WIRING CHANGE OF DEFLECTION YOKE CONNECTING

PLUGS - To increase the insulation between connections

of the mole and female plugs connecting the yoke assembly

to the chassis, two of the leads have been rearranged as

follows. Reference is made to the schematic, which in-

corporates the plug lead arrangement.

VI

'NV

T3 300 PIC If

926947 T

0,13 • INEG 029

T • 4141 PM 44

C38 CS, 056 041 0917 i154 330

52

'cameo« MTN coonlIt

NMI

132 097 .294, 000

VIA DETECTOR

I/2.6ALS

R7 61300

RIS 22K

c414

22 RIWN

• R63 82 075

or

07 N GEO AMPLIFIER

SAG?

s LIS

270 SRI

I $et 033 030 2204 2506

vI 7 RECTIFIER

02G Tir susc

R34 NEG

C78 102

035 2.4E6 OVOID

948 0 C RESTORER

1/2 -11AL5

LIS a n' 01514H

*120 006

530 220

O L 'NE Al/iTY 80A

085 .80

1. The orange lead from yoke to T26 originally connected

through pin No. 1 was moved to pin No. 2.

2. The brown lead from yoke to arm of R88 originally con-

nected through pin No. 3 was moved to pin No. 4.

Receivers incorporating this wiring change in production

are identified by the letter "G" stomped upon the rear

chassis apron.

PINS OF YORE PLUG (OCTAL)

L FOCUS CO,..

771 I 6041

Lt•

Vs PICTURE TM

ISIAP4

*19 2200

SISA012

E.SN7GT V OuT Rol

5 LO9EFLECTION

a C86 56

C228 200 980

44v RECT0011 01341

06. 065 079 MO I Ca Q0 120•

VIS DANK. 6944GT

123 II SIZE 44.2 len

V GENTLING

PINS OE RUG

(OCTAL)

ciiS 1000

SINGLE YOKE

CONNECTO1

20C150, 20C151 ELECTROLYTIC CONDENSERS


C311 ..1 mf.. 50V RCE-090

C406 5 nit.. 150V RCE-056

C457 100 Inf., 150V RCE- 123

C5I7 500 mt., 15V ACE- 126 C605 500 mf., I5V RCE- 126

C600A 60 mf. , 350V RCE- 124

C600B 30 mf., 450V RCE-I24

C6O2A 40 rnf., 450V RCE- 122

C6O2B 30 mf. , 350V RCE-I22

C602C 15 ref., 350V RCE-I22

C6O2D 30 inf., 25V RCE- 122

C603A 30 mf., 450V RCE-I21

C603B 15 mf., 350V RCE- 121

C603C 30 mt., 250V RCE-121

C603D 25 mf., 25V RCE-I21

C604 500 mf., 125V RCE-I25

C606 IK mf., 6V RCE-I06

TRIMMERS:

C104,6 1-5 mm!. RCY-065

C105 20-50 mrnf. RCY-066

C108 .6-2. 4 mmf. RCY-048

Cl 18 .8-1.7 mmf. RCY-067 fine tong control

C465 1-12 mmf. RCY-069 yoke balancing

C5I5 110-580 mrtif. , RCY-064 flor. Drive

CONTROLS


Volume(on-off) 2 meg 8.350 RRC-161

Brightness 2 meg 8.611 RAC- 158

Contrast 10K w. wIon-off) 8.401 RRC- 161 Hor. Hold 100K 8.510 RRC- 160

Nor. Sise

Vert. Hold I meg 15456 RRC- 157

Vert. Size 3 meg 15458 RRC- 159

Vert Lin. 2K. 2w. , w. w 55462 RRW-068

AGC 25K 55425 RRC- 140

Focus 400 ohms, 25w.,w.w 55601 RRW -065

Hor. centering 500 ohms 55604 RRW -066

Vert. centering 20 ohms 8.605 RRW -067

WIREWOUND

Capacitor resistor network C451. 2 REK- 001 002 mf. , . 005rtif... 005mf 453

22K, 8.2K, 8.2K ohms. 112w 8.452. 3

resistors; molded integ-

rating network

454

10, 500 ohms, Globar R45I RRW-052 Voltage Sensitive

475 ohms, 15 w. R518 RRW-060

16, 500 ohms @ 155 V Globa

voltage sensitive resistor

R520 RRW -061

3K 5%. 7 w. 8.522 RRW- 062

470 ohms, 25 w. 8.602 RRW-063

1K, 15 w. 8.603 RRW - 064

COILS


L209.16 Det. , in ehield can RLX-031

L106 IF trap & core RLI-159

L136 Choke- I. 4 uh. RU-136

LI 37 Choke-. 56 oh. RU-144

LI 38, Choke- 13 uh. RFfil. for RLI-154

139,40 AGC, cony. plate or oec

L201, 2 let Video IF RLI-133

L203 2nd Video IF & tun'g core RU-131

LZ06, 7 3rd Video IF RI_J-132

LZIO Choke-250 ob. RLI-156

L211 Choke-110 uh. , video RLI-108

400

L2I2, 3 Detector -sound RLX-032

L2I4 4.5 mc and core RU-I 39

L2I5 Choke-1.4 uh. RU-142

218, 20 5% filament

L216 Choke-31 oh. RLF-024

L217 Trap-4th Video IF RU-135

L221, Choke 2.2 oh. RLI-122

404,

503

L401 Choke 1K uh.. AGCkeyer RLI-155

L402 Choke 220 uh., video RL1-143

L403 Trap- 10uh. 4%. 4. 5 mc RLI-140

L500 Hor. oec. coil &ach. •Itig RLC- 107

L501 1-for, lin. & tun'g core RLD-027

L504, Choke - 10 oh. RU-I38

505, 6

L600 Choke 5 henries RLF-040

L601 Choke 5 henries RLF-041 L602 Focus RLF-042

TRANSFORMERS


Vert Osc.

Vert. Output

Hor. Output

Power, 60cy, 115V

Audio Output

Yoke

Antenna input

Width I. AGC c'pl'g

Rat. detector

Input trap

Trap

Sound I-F

39. 75 mc trap

I- F output

T450

T45I

T500

T600

T350

D600

T100

T501

T301

T200

T201

T300

T202

TIO1

RLC-108

RT0-097

RTO- 109

RTP- 308

RT0-096 RLD-039

RUA -037

RLD- 028

RTD-008

RTL- 118

RTL- 119

RTL-120

RTL- 122

RTL -I26

MISCELLANEOUS


5350

LS350

Y200,1

Ion trap PM magnet

Tuner -RF headend an ey

Tuner -ELF headendaisey

Tuner -RF headendasey Tuner RF headendassy Television phono sew.

Socket-Pis tube

Loud•peaker -12"

Crystal diode

Crystal IN64

RET-011

RJX-044C (Early)

RJX-044W (W)

RJX-048WK (WI()

RJX-048CK ICKI RSS-005

RWX-041

S1212D7

1N64

RLX-032 (Part of)

V107 6CB6 4th Video IF Amplifier I V101 6AB4 1st RF Amplifier


V103 12AT7 Cony. - Ose.




V110 6CB6 Sound Take Off Audio Output

1st Audio IF Amp.


V114 12AX7 Audio Amp. Phase Inv.

V115 6W6 Audio Output V121 654 Vertical Output

V116 6W6

V117 6AU6 AGC Keyer

V118 6T8 1st Clipper-Hor.AFC Disc

V119 I2AU7 2nd Clipper-Reac. Tube

V120 6SN7 Vert. Ose. 8.1 Blanking

, V122 6S4 Vertical Output

V124 6AV5GT flor. Sweep Output

V113 6AL5 Audio Detector V125 1B3GT High Vol ge Rectifier

V127 6W4GT Hor. Damping

V128 5U4G Low B+ Rectifier

TEST CONDITIONS



Picture control at maximum.


Channel selector at channel MI 3.

Readings may vary at 20%.

Head end measurements are mad,-

from the top of the chassis with tube

removed during measurements of

voltage on its socxet.

All voltages are DC unless otherwise

noted.

* Measure to high voltage center tap

of T600.

All readings by VTVM unless other-

wise noted.

@ - AC Voltage Reading.


64

TO SnaKITI1

4024.4 066880 CIO2C4a

ZO

1.500 •webosc

.1560 TO M100 OCILIG4106 YOKE

05.5

Ma TO 4047 K.

AUDIO I•F 8 OUTPUT

VIDEO OUTPUT VERT SYNC 8 OUTPUT

HOR SYNC

POWER SUPPLY

T0 TOGAS COK

MOR OUTPUT El H V SUPPLY

< • 163GT

INCT•111 *ME SOCKIT

VIDEO I - ANO

DETECTOR

1.212

LEO

L201 ,

L202

0 4, • /

R•F HEAD-ENO

UNIT

Li

TOP VIEW

TUBE LAYOUT

BOTTOM VIEW

FOR OTHER TUNERS USED, SEE PAGE 100. V102 «as

- 5100 SHOWN_ASHAAmLe y p227.0 249.7 r-

L107 LI21

V101 6884 13 S1008 5100C IST Rs

1101

LOO

100

12

7

6

•

L102

7

1,Et1103

9004

e

•

C129

CITO ord•W

CO3 L13 5

106 800(

V128

REct If E R

544 -6

•

003

816 "604

zoo4,

V103A OSO.

4112477

24 13

R 09 8 00

'MOWN 1

"1 .8 n 109 VII? /Ram ".

°es

-. C6008

• KR

CA 800 G17

AGC

L122

0106 1K

L136

c;º Vt038 CONV

li)4477

5

160 V

V104 6C86 r 4

1ST VIOE0,-1

I F w I1102

c225

V103 «Ateen 6C86

ze VIDEO 2c ç5I IF

apj•Auce7244ic '-Jr -2 C202

710

os 800 11114 220«

2

•230

1.1120 9

R206 40

0204

C204

7

>m9

8211

13411M3 Lome

à d

C302 IMe IR

V106 41257 6(86 OWN Aur0

C210 II C2114172,7 27 C2I8

3R0 VIDEO

660 8207 68

2

O

L203

212 47K

3

2 02

R2I7 3341 MO

08 C24I à - 1 Lt V107 41.25MC 1 6C86 OWN AU00 .2 ni7 11464 HOED 7200 I

4TIH F vCE0 C2 39,...,5. I

c 62 4.60 1

11-110; 171Y7', L211

R219 1

R215 470 R216

2 211 7202 39.75MC

C220 600.99.

1221 470

11 C223 RO e d 918 9 3300 C224 1210 5 Ale pee i

R229 1 4 68K

14 •

V108 64G7

VIDEO AMP

20C150, 20C151

VD6 6W6

V109 20GP4

OCT. TUBE 1403 .10/8

C4CO 1402 MI6

2 CAO

P602' Lee'

i'ELL014, .160121

117603 400

RUROL C..11FE9 OCUS

V129 5414 -G

RECTIFIER

4

2100 5,1 06001.

L601 5H

1400 340v

Ci60°04 - 470 MF

15oo.

-egv

1600 5H Ow 8

C60213 307

1116k1 87

239

_f 800

C234 800 I

Pd

• 220 SK

160 R426

VI27

, C235 12 1218 1137 ied BOO

PRODUCTION CHANGES MODEL 20C150

AND 20C151

4.7K

2200

R422C402 tO

• 868 TOR 2426

R424 RI62 22K AEG

R425 2 K

8405 MEG

R403

7Et

NESS

KOK

P601

.0301

lip L5320

1501

.1501

VI17 V118A 64u6 NC 678 AGO 6(5111 11408 CoPF971 r - - - - x-

e.".• rey C40

6 •70x

R407 0 150« 408

.27

• C

4 in 2

TOI> II ceo, 68

AK 4 TEACC.

1m11

C409

R.

68011

V1194 12 MO

•2710 CLIPPER

R4I6 #415

820 1000

560

C 430

0. #450 686

•-• R452 R453 R454

1 2211 8.26 2 1 c45> C45286 C4 I .002 0e

_à R451 lip. C454 2211 4

VERT. SPEED 0455

8456 MEG MEG

, V12013 C463 .i694767

VERT BLANKING

V120A • S147GT

VERTASC. .

4

C44.4 470

7450

RIFE

V1186 678 MSC.

C503 '20 M.

1140

2

180

688(

C502 1000

"*4

8502 600

07503 INE

- 82V

R505

150K

.C305 *00

% 81 5.i't4Ar

`eZ,°,1 11504

100«

4:3 ›St

4.0 #525 61t4

111506 688

(206

V11913 Rex 128.u7 --

REACTANCE C523 yes( 6

C509

,L-5°°

CSII

400

\p/ C510 220 , à 22K E r-HIOR0SC

fig313f R308 27. , .2.) AD j '' ... 220 R509 AO k 0 I

507 .058K “CR SPEED

a NO 100K

VI23 6806 64v5GT ..cw.osc NON SWEEP OUTPUT

VI24

-7/

C514 7

R531

(213 .01

C512 .54 3600 5.71

K.),0

70

'MG

516

NC

22K 001 0E C545 110 - 580

9

VI21 VI22 654 654 VERT OUTPUT

VI25 813GT

10-W71.7 RECT

457 00 EAF 30

VERT LIN. R464

1188 R463 470

SVA 2.71.1EG

RE

1500

VERT

[ sn

,,,, 43182. 706E 0600

l

I

060

b eel,t TO PLuG PRO

8465 06 mocte 2200 100A

LAE

C522

eonc.465

gir VER

•

0466 2200

01622

680 1506 101IN

R605 2

vER T. CE

CENT

J500

8526 R327 #521 R529

8617 68481

8615

-'NJ

54 2111 7501 504

e uE•dm°e•521 10141

O 07H

«MR

ti • • 8LACK RED

4411L501 L 503

• 22K

V118C 160

DISC. 625 V

R619

i2K

0520

".e«,,,1- 2.2e C521 .057

V127 664-67

3 0709R

C525 330

C51111 05MF

ALL CAPACITOR VALUES ARE NON UNLESS OTHERWISE SPEC,FiED

1. Vertical output grid coupling. C459 changed from .2 3. Horizontal output screen by-pass, C516 added in later

mfd. to .1 mfd. in late production, production receivers.

2. Vertical oscillator plate resistor R470 changed from 1 4. Primary power fuse, F600 Cot. No. REF-007, added in 6. RF decoupling capacitor, C2I3, added to IF strip in

megohm to 2.2 megohms, In late production, late production, receivers using rubber stamped " W " , " WK " , and " CK "

RF tuners.

5. Video coupling choke L405 changed from 2.2 to 10.0 mic-

rohenries in all receivers employing o 6AK5, 2nd RF am-

plifier (WK or CK tuners).

e_OCHOTES TEST POINT

24C101



V103 12AT7 Converter-Oscillator


V105 6CB6 2nd Video IF Amplifier I


V107 6CB6 4th Video IF Amplifier


V110 6CB6 Sound Take OFF

VIII 6AU6 1st Audio IF Amplifier


V113 tiAL5 Ratio Detector

V114 12AX7 Audio Amp. Phase Inv.

V115 6W6 Audio Output

V116 6W6 Audio Output

V117 6AU6 AGC Keyer

V118 6T8 1st Clipper-Hot'. AFC Disc.

V119 12AU7 2nd CLipper React.Tube

, V120 I2AU7 Vert. Osc. & Blanking

V121 6BL7 Vert. Output

V123 6AU6 Horizontal Oscillator

V124 6AV5GT Hor. Sweep Output

V125 1B3GT High Voltage Rectifier

V126 6AV5GT Hor. Sweep Output

V127 6W4 Hor. Sweep Damping

V128 5U4G Low 13+ Rectifier

V129 5U4G High B+ Rectifier

130 6W4 flor. Sweep Damping

TEST CONDITIONS



Picture controls at maximum.


Channel selector at channel #13.

All voltage are DC unless otherwise

noted.

Readings may vary 20%.

Voltage readings by VTVM unless

otherwise noted.


Receiver power disconnected.

All potentiometer controls at max-

mum clockwise position.

Readings may vary 20%.



66

—CD-Pea ,0

PAIL,Sr roof SocAft

•Cf•A <sons

AOSO

501

e Au0.0 OLT

AUDIO 1-r N OUTPUT VIDEO OUTPUT

VERT SYNC & OUTPUT NOR SYNC

POWER SUPPLY

to focus CO.

0 NOR OUTPUT 8 H V SUPPLY

< PSCO Of rOff

TUBE LAYOUT BOTTOM VIEW

PRODUCTION CHANGES MODEL 24C101 C213, LOW B PLUS BY-PASS IN IF STRIP

This is a ceramic 800 rninf. copacitor which was added to

the IF strip at the terminal board odincent to the lot IF

plate coupling coil, L201. This addition was necessary to

provide an RF by-pass for the low B plus circuit of the

"W" production version of RF tuner.

FOR PARTS LIST, SEE PAGE 100.

FOR OTHER TUNERS USED, SEE PAGE 100.

o {L21

VIDEO F AND

DETECTOR ywy

• • RF HEAD - ENO

UNIT

V102 Ace&

— 5 e4 S"C"'" — — T 7e

20

Li*

TRAPELATOR POWER

1600

5600

11620

:lb

0.41 R 09 00

0121

SOUND DETECTOR COUPLING CHOKE, L220

ALL EJAISCJTC. fALUES AEC Ow UNLESS OneRwisE SPECCIED

sound workers on the sound detector output response curve. HORIZONTAL SWEEP OUTPUT TRANSFORMER

L220 is 1.4 rnicrohenries os shown in the schematic dia-

gram for later production receivers. Coincident with this

choke change from the 2.2 microhenry value for early re-

ceivers, the sound take-off circuit coil L212 was aligned better sound IF limiting.

to a new amplitude ratio of 7 to 1 between picture and

1R603

103

I 2

VK ACIDIE

SOuNO 'RAE -Of

Vil8C

6113

DISC

Of ?SW. — 1 ACJ Au020

eig 31

These changes contribute to greater audio sensitivity and

VE2 V113 saus sao

r .4_ ...Tv% f 301 flAn0 DE SEESCA1

r -1

c; gui '

520 v

T500

à

C5111

V11411

ii2ax Auto° Alart

ADJ TOE0 yup Lei? 4461 39 75“C

1000(

A late production run of catalogue No. RT0-104 Horizontal

Sweep and High Voltage transformers was improved to

increase the temperature rise limits of these units. The

late transformers will bear the code number 31 and the re-

placement parts stock catalogue No. RT0-104. These

transformers may also be identified by the lower resistance

Loll

OA

V1148

IT at? pmASE OIVERTEA

V108 ¡ACT OUT &kV

0.04

V109 2•APf

MCI flME LAOS ,oe

C.,. L.02 Ue

lo

24C101

&AEA

15130

ÉTP6% 04:4111411111

J6,01

J50 ,

250v

*Y-OCNCITE nEsy pow

reading of 28.5 ohms for the primary (terminals 1 and 7) in

contrast to 38 ohms for the early production units

When using this transformer as a replacement for the early

production transformer, it is necessary to remove the 300

ohm wire-wound tapped resistor strip R538, R539 in the

cathode circuit of the horizontal sweep output tubes V124

and V126 and replace it with a new resistor strip RRW-093

450 ohms topped at 50 ohms.

67

2012, 20C105, 20C106, 21C200 ELECTROLYTIC CONDENSERS

REF. NO DISCRIPTION PARTIES.

C310

C379A C3795 C379C C410 C45I

C452 C453 C454A C454B

C104 C106 C105 C108 C118

30 mi., 450V 10 mt.. 450V 40 mf., 300V 10 mf., 150V 1 mt.. 50V 300 mf., 150V 125 mt.. 350V 80 ml., 300V 20 mf., 300V 100 mf., 75V

TRDEMERS:

RCE-136 RCE-118 RCE-118 RCE-118 RCE-090 RCE-110 (CE-Ill ACE- 112 RCE-134 RCE-134

RCY-065 RCY-065 RCY-066 RCY-048 RCY-067 (Fine tun's)

l -5 mud . 1-5 mmf. 20-50 mint. .6-2.4 mmf. .8-1.7 rnmf.

CONTROLS DESCRIPTION REF. NO. PART NO.

Volume Brightness 500K Contrast Hoc. Hold 100K Hor. Sise Vert. Hold 125K Vert. Sise Vert. Lin. 4K

Height 3 meg HOT. Drive 25K 1/2w.

Picture 2 meg (Console) Picture 2 meg(20T2 only) Volume 5 meg (Console Volume 500K (20T2 only)

WIREWOUTID

Triode couplate-. 01 mfd, 25K, 500K Vert. Integrator -.001 mf.

. 002 mf. .39K . 82K 4.6 ohms, 5W 20 ohms, Globar 41C, 10%, 7W

1/2 ohms, 10%. I/2W 5600 ohm•, 10%, 5W 1500 ohms, 10%, 5W I4K, 15%, 140V, Globar 2200 ohms. 5W 31 ohms, Globar

R276

R365

R305

11.311 R308 R369 R284 R413 R413 R284

C4I9 R4I7, 8 C301.2 R302, I R451 1t457 R.380

R375 R282 R452 5382 5281 5456

RRC-175

RRC-173

RRC-174

RRC-127 RAC-096 RRC-140 RRC-184 ARC- 186 RRC-184 RRC-186

REK-002

REK-003

RAW -048 SLAW -051 RRW -053

RRW-058 RAW-079 RRW-082 RRW-088 RRW-092 RRW-094

COILS


L100 L106 LI36 L137 L138, 9 LI41 L25I L252, 3 L254, 255,6 L255,6 L257 263

L259 L260 L261

L262 L264 L35I L352 L353 L354 L45I

Ch. RF input VI assy.

IF trap & tuning core Ch. I.4uh. V3A o•c. "K' Ch.. 56 u).. V2,V3 heater

RF choke RF choke 2nd Video IF & tun'g 3rd IF, trap &adj. core Video detector as•y. (incl. crystal 0.164)

31 uh. RF choke Video compensating choke 165 uh.

Video comp. ch. 4.5 mc video trap 110 uh. video comp. ch. plate circuit of V7A Ch. Video compen•at'g 130 uh. video comp ch. Hor. hold & adj. slug Hor. Ian. & tuning core Width control

Plate ch. 10 uh. e/supply filter ch. , . 9H

RU-165 RU-I59 RU-145 RU-144 RU-154 RU-152 RU-096 RU-I10 RLX-035

RLF-024 RU-162

ALI-093 RLI-100 RLI-108

RU-161 RU-I09 RLC-091 RLD-016 RLD-014 RU-138 RLF-051

TRANSFORMERS DESCRIPTION REF. NO. PART NO.

Vert. Oar. Vert. Output Hor. Output Audio Output Audio Output Yoke

Antenna input

lit Audio I-F coil Ratio detector assy Filament tran•f

Video IF headend output

Video IF input

T302 T352 7404 T404

0302 T100 T401 T402 T45I TIOI

T200

FITO-117 RTO-116 RT0-082 RT0-081

RLD-041 RLA-037 RLI-097 RTD-008 RTF-002 RTL-126

RTL-127

(for console) ( 21T2)

(for V1,2, 3)

68

TEST CONDITIONS


Measurements are in respect to B- with

a 20,000 ohms/volt meter.


IVI 6AB4 1st RF Amplifier

V2 6AK5 2nd RF Amplifier

I V3 12AT7 Converter - Oscillator I

V4 6CB6 let IF Amplifier

MISCELLANEOUS


LSI LS2 X451, 2

5200

Picture tube socket Speaker. 5 I/4" PM Speaker, 12" PM Selenium rectifier, 350 ma PM Focus unit PM Focus unit (21C200)

Switch, Local-Distant

R%VX- 045 652707 (20T2) 61212D7 (console) RER-008 RLF-052 RLF-053 RSW-067

V5 6CB6 2nd IF Amplifier

V7 12AT7 1st & 2nd Video Amp.

V9 12SN7 Vert. Sweep Generator

VIO 12BH7 Vertical Out ut

VII 6SL7GT Sync. Amp. & Clipper

V12 6AL5 Discriminator 3rd IF Amplifier V18 6AU6 Audio IF Amp, & Limiter

V13 12SN7GT AFC & Hor. Oscillator


V16 25W4GT Damper


V19 6AL5 Detector

V20 6SQ7 let Audio Amplifier


1

1

ITUTP(17

SAAPIR

MC ANA • ani•

PI« 097,97 AILS ON MOIL I.L304

POU reCO LA

(\ LS

6112r924

BOTTOM VI EW

‘Peer:-Q, g T427.11 'MAIM

I.

1 R.F. TUPER IIi

1430

J402

]1]

VO

25L6 61

MV/idà

"U 5110 LI L253 wow

1200

L265 VI WOO/ LI

0,0

C451

9 .1403

"BO .1401 5.8.C.C1

TOP VIEW

NOTE: MODEL 21C200 uses 25L6 os V10.

5429

vs a

VERTICAL SWEEP CIRCUIT of MODEL 21C200.

R IOC,

•NTERNA TERNmat

Let

100 SNOWN GNANAN- 1.6 - OAKS 1

LID/ 2 ea LI I. MO VI

6A84 19, RÉ

L.02

•014 4.111111111410,

4102 G.29 III C112 10 500

C110

1° 1.135

1

0114

'2 T4:

Es

-•1

T-

CIISI Cull .8-L7

FINE TUNiaia

tl

- Ali --FUSE

Go3 3.9 V38

CONV ('N)j2 AT 7

A $1113 22011

680

For Production Changes,

*NOTE. PASS OMAR CMGAT 11114 G44 • TAP ON TOI. CON? I OMITTED OS 7.1010.5 2072.

G4.11 Is .00157 ON MODELS 20C105.•106.

CAPACITOR VALUES ARE luif UNLESS SPECIFIED ▪ 93J 794 -13 C 3,9 • - •5010 C 379 8. 404 300v C 379 C • 1021F 150v • K 677955-10 •541 -20 7if 300v G 454e .0014F 75V a

410200 0111.7 (16▪ 1.161EANS EARLY PROOUCTON CLPINEM23 LATE PRODUCTION

CONTROLS 1ML V"TAGLYTWAMENTS SWEEPS,F03AAVOINIONTNE35 NEAMIVAIENT5 APE IN RESPECT TO 8- MN A mac fl/VOLT METER ••11.1CINIU/ED MON • VIVA

VERTICAL SWEEP GENERATOR

1.141

i le - . I

1025 - LIM I too;

c7-.N6F.A. 11451 0452 45, 15.00 4.4

030000", C451 26521 5512 300 OM

x45.1- -O 452 125 me

71454 C61511 s7152 jL4SS L.S561 jL433 >v7-

5°Ci leT2Wel l

eleGTOLD :W CAlO Jioco

1.. G463 ISO Lai

432 Port*

-il TRANSLATOR POWER

25806 .25174T 654.767 25 *447 6.36 6U.5 L•59

2 7

9.0.te • KO% .511 VIS

12 1 ALL 9(•TER 0700(5 Geni

11390 6 3.91.1EG

R 304 665 C306

4 MF R 305 12511

VERT NCXO

R326 It 306 ic, 309 1 2 3114G 5IAF MEG

V4 19T 1.F. 6C86

125147

•••- C 314

V / 12BH 7 Bue VERT/CAL ÙUTPUT 7

O

A • C 4549 .1E310

100 - 30 311 1.1F MF 411

VERT. UNEARITT • T

VERTICAL SWEEP CIRCUIT, EARLY PRODUCTION

T 302

RED

G500

4!5•1.-

see Pages 110 and 111.

V17 6AU6 AMP

ADJ. CR. TRAP TeX V5 V6

62C1316E LESS cro 63eceB1.:

r

WUXI

11352 22«

C259

C2344 4 C24 9000 1

r I do 1.1.41.0

Y I DEI. I N64

2012, 20C105, 20C106, 21C200 V 7A

ler VIDEO 1•2 I2AT7

L. GREEN f 35 C268 us, 2

.05 1.tr 17F

11217 6800

2.257 IRS MK

e2535 4 • 000..."

G319 [Zej V 9 0,e*Tuie

J-Mer t

C355 tr.:7 -14

4258 PICTURE 5254 \ ccxi.. Ono

CERA

geprb 3 1E-

110°W 168 1 5101 G30k G 302 __Inl.%°°".14 L "44":14''. UMW 52E fDs .5722 -r , 4305.

ESA I- .1

e

R264 2.271EG

1124211.P2 3311 5200

11 ;:6 1(

ael 5

VII / 6SL7GT SYNC.Ake Et CLIPPER

V12 6 AL5 DISC

A 359 C31, 02

VENT. .D.QUE

5340 150«

11429

C372

GRCEN 1262

V 78 V 8 Zoe VIDEO PICTURE TUBE .ita 12AT 7 20CP4 OR 2IEP48

C275 1.264 00000 1306.9

714,

127.g3 4246' =I! lor 220K, 11 C203 R3134

• • C371C G273

.055F

VIO VERTICAL OUTPUT

128117 4385 2200

G22,74

P4010

1000 4711

C277 -11 62 177

J40101 .3„ Suit T302

.02110 I CLAW, 11 (0

124 c psOIG

. C4349 .1.G310e

330 7/401C

- I I li 00 AL _T 30 C R325 o r NW 17170 IL a.

VE St LIN EARITE

'• 445535:521 4 It ,u, 4 io«

, re 3, (431) :3 '‘'34:3 ;77, 25V814Q6 15« 2 i 25« / T HOR

, ern 68« C344 - C147 250 1800 - OUTPUT

L 351 33K 11344 5

4357 UK •,(_)_t 4348 1 C g0 . ..Es -et sc_p Ow G340 ii, IRO- :5370

MO

fl..0.1,0.«,.5 G3 o. 111( •

C375 n - 03 61F Av 1M.D

- G352 P 79 C 371 5000 go« 6-:-235121 .055•0

11453 4704 V18

6AU6 4.5 "c LJMITER- A

- OS

prq

60.

61. 5 MG. SAL5 V 20

- OVETEI9CTOR 5z4tDeD .12 ter ler AUDIO c 1 01 .eb D c.slo 650 7

312 1 c I 2 R4.0

140 22K ! 47 .20 1

5405 5406

9000 1004 470K 5404 564 L40 C424

L

•1.

14 2171

1 Ift411{ C413 i3.11(

v5 vs v67 v7 VC. 2I Vi e 7 ejt 4,031 9C71.1 141 1147 7

.0 K•58 L•St L•53 L454 L •33 S 25LIG7

2:501 .7 75•670T "SLICT ZSAMAT 9636 641.5 VALS 3 • • 3 4511

T

42 449 44.1 S000

¡UK

(17 VO VI VII „„. VI v

• MOTE SEA Val

.cerre acmes tee

11427 474

5277 22011 1505.

5141415(55 in 276

2.2«

439 2.217

V 15 1 X2A H.V. RECTIFIER

11374

G.422 Sc

25L6GT

V2I T.003kor

1404 0 Lel CR LIZ

AUDIO OUTPUT1rre 5100E

CO uPt. ATE - 41 5

25W4 GT PAMPER

4377

C377 .5 Nif

4543 ISOK

Œi

5320 1005

IL1k

.14 • 01A •• i I 4521

14403

450

mole ." 0312 mom 2oNTAL outrun. 001.2

FILAMENT WIRING for MODEL 21C200.

,NO3

2114, 2115 ELECTROLYTIC CONDENSERS


C311

C315

C4I0

C379A

C379B

C379C

C43IA

C43IB

C45I

C464

C465

CI04, 6

C105

C108

CI 18

30 mf.. 300V

1 mf., 50V

I mf., 50V

10 mf., 450V

40 mt., 300V

10 mt., 150V

20 mf., 300V

100 mf., 75V

300 mf., 150V 150 mf., 300V

125 mf. , 350V

TRIMMERS:

RCE-141

RCE-090

RCE-090 RCE- 118

RCE- 118

RCE-118

RCE-I42

RCE-I42

RCE-110

RCE-I43 RCE-140

RCY-065

RCY-066

RCY-048

RCY-067

(glass tube type)

(temp.comp type

(fine tuning)

1-5 mmf. ,

20-50 mint'. , .6-2.4 rnrof.

.8-1.7 mmf.

CONTROLS


Volume

Brightness

Contrast

Hor

flor.

Vert.

Vert.

Vert.

Height

Picture Hor. Drive

Picture

Triode

250K,

4.6 ohms,

20 ohms,

4K, 7w. I. 2 ohms,

5,600 ohm.,

1,500 ohms,

14K, 140V,

2, 200

3, 300

5 meg

500K

Hold 100K Size Hold 125K

Size

Lin. 4K

3 meg

2 meg

5K, I/2W

stabilizer 3 meg

WIREWOUND

R413

R276

R.365

R.305

R.31I

R308

R284

R388

R34I

C4I9

R417,8

R45I

R457

R.380

R375

R282

/3452

R382

R28I

R297

RRC- 186

RRC- 175

RRC-173

RRC-174

RRC-I27

RRC-096

RRC- 186

RRC-195

RRC- 196

REK-002

RRW-048

RRW-051

RRW-053

RRW - 058

RRW -079

RRW - 082

RRW-088

RRW-092 RRW -098

couplate-. 01 mf.,

500K

5W, 20%

Globar

10%, I/2W

5W.

10%, 5W

Globar IS%

ohms, SW

ohms, IOW

COILS


L100

L106

LI36

LI37

L138,9

LI41

L25I

L254

L254,

255,6

L255,6

L257

263

L260

L26I

1.262

L264

1.266,

277

L269

L270

L35I

L352

L353

L45I

Choke R-F input

IF trap & tuning core

1.4 uh, V3A osc. cath.

V2, V3 heater choke

R-F choke

R-F choke 2nd vid. IF & tun'g core

Vid, comp. ch. Vid. Detector assy.

31 oh. R-F choke

Vid, comp. ch. 165 uh.

4. 5rnc.,vid. trap &adj

110 oh. vid. comp. ch.

plate circuit of V7A

Vid, comp. ch.

Vid. comp 3rd vid. IF & tong cor

Vid, comp. ch. 80 oh.

Ch. plate, 10 oh.

Hor. hold 2. adj. slug

Hor. lin. & tun'g core

Width control w/adj. co le

B4 supply fil. ch. .9H

Head end RF a••y.

RL1- 165

RLI-159

RLI-145

RLI-144 RLI-154

RLI-152

RU-096

RLI-093

RLX-035

RLF-024

RLI-162

RLI-100

RU-108

RLI-161

RLI-109

RLI-173

RLI-174 RU-138

RLC-091

RLD-016

RLD-014

RLF-051

R3 X-050

PRODUCTION CHANGES MODELS 21T4 & 21T5

1.PROTECTION OF HORIZONTAL OUTPUT TUBE 25BQ6

In order to reduce the donger of overdriving the horizontal

output tube, 25BQ6 the Horizontal Drive potentiometer was

changed from a value of 25,000 ohms to 5000 ohms.

2. TO IMPROVE VERTICAL SYNC-In order to increase

vertical sync tightness the capacitor C305, 1000 mmf in the

grid circuit of the vertical sweep V9, 12SN7 was changed

to C316, 1200 mmf. Some receivers had o 220 mmf mica

capacitor added to the 1000 mmf capacitor.

3. IMPROVEMENT OF VERTICAL SYNC STABILITY-In

lote production receivers the stability of the vertical sync

was improved by disconnecting the AGC to the 3r d IF tube,

V6, 6CB6; the grid was connected to ground.

TRANSFORMERS


Vert. ONC .

Vert. Output

Hor. Output

Power

Audio Output

Yoke

Antenna input

1st Audio IF Coil

Ratio detector alsay

Filament

Video IF input

Video IF

T302

T352

T405

D302

T100

T401 T402

T45I

TZ01

TIO1

ESTO- 117

RTO- 116

RT0-081

RLD-041

RLA-037

RLI-097

RTD- 008

RTF-002

RTL- 137

RTL -139

(for VI, 2, 1. 3)

(headend out •

MISCELLANEOUS

REF, NO. DESCRIPTION PART NO.

X451,2

Cap-HV rectifier cap.


Ion trap-PM magnet

PM focus assembly Sneaker -51/2" PM

REC-006

ma. RER -008 RET-013

RLF-054

S527D7





V5 6CB6 2nd Video IF Amplifier




V10 25L6GT Vert. Output

V11 6SL7GT Sync. Amp. & Clipp-e—r1

V12 6AG7 Noise Canceller & Disc.]

V13 12SN7GT Hor. AFC & Sweep Ose.


V15 1X2A H. V.Rect. Do Not Measure

V16 25W4GT Hor, Damper Tube.

V17 6AU6 Audio IF (4.5MC) AMP.




TEST CONDITIONS


Input 1 17V, 60 cycles.

All controls set for normal sweeps

Antenna term shorted. Measured with VTVM unless other-

wise noted.



70

2114, 2115

01,001•4 40•CLL

IV •

IT4°1 .0.0 LIMIER-MR

RATIO Pi

o 1402

WOW OUTPUT

"Ir">

® stele

Tübe Location

ro

.00 SNOWN IN MA NNE L. 6 POSITION

/0,111111,

1 .3 5.008 5.0

1

J402 J403 p

VI 6AB4

RF ,

VIC,

1252 1 I

Tube and Trimmer Location (Top View)

I

1

I 431 117v

60 04021,1

1121

V2 SAKS 2 me, L 122

CIO8 L. 20 70

5 gr

-- ea: .. . Nozz z..... vALUCS ARE in,

UNLESS sy(cirl CD «65/794 • 13

— 1 1 r C 379 • IOW •50v • C 379 II KW 300v • C 371 C 105. 130v a

/ / vRANSLAT001 K63/793 i. POWER C•3i•.20 • 300v •

C4318 • 100 Alf re a

14

600

50 v

(EP)MEANS EARL,' PROOIJCTION IL/WEANS LATE PROOUCTION

CCRITROLS SE T Mg ASUNVNTSMAL vocrAct ME

SIVEERS.FOCUS.ANDIMMITNESS MEASUREMENTS ME N RESPECT TO 13- WITH A 20000 fl/VOLT METER TTMEASUREO WITH A VTVM

L —

VII VIS

ALL 34•TER cre«Cs 1.50

C425 _ 500C

V4 In 1.F. 6C86

4,v1 C 235

AO/. CH TRAP

2.91.E T C V6 VS

6C66 LE*?flIrC ACB 6

EI01

1270

Y I E T. I N64

Ilsovl .1 C265 h_

[1k71 due

2.0

(E PI C305.1000 It 316 .04

V 9 1° ..... C309 VERTICAL SWEEP 10022

10.... C25. GENERATOR er 2

0,238 PICTURE .n . .,0. CM ROL 2 MG « r C294 e' 12SN7 302

39« i'(I‘'

0

•;> 5000

I-9 g 3 306 ,

200

- ¡ 9290 ME 1.11r« i 2I59.ek 0022C —100K : I G e- .-rrz , If T .

33 C268

PICTURE .5111111Une

0341

C3799 T 3 •04.«

0 331

V 7A Is. VIDEO

12 AT 7

BROWN 1.265

V 79 2. VIDEO 1/2 I2AT 7

GREEN L262 /

."r 65R.T.T1t

lab L261

0E0

1_ 53-C4 C TRAP 1.3

cne 3000

¡ 340 V ¡

A 2 70/

.. .05M0 -1-_eC 379C C275

ems 4..

0274

C274 0206 22001

0272 4700

C282

Zcz" I

3000

0424 2251

C276 I 5,47

384

0269 3 .50K k

IM IENTNESS i 11276

LIML 'WOK I

""'ctis.eireer P4010pf. 3

T 302 2 22; REM -

174; 321

1 ¡ 0322 .30K

V e PICTURE TUBE 2 IE P4E1

1F—W 13eilN7—

C275 1271 1 e

134

R334 4 701(

[1303]

1::(%

•sa

— te

450

11110, 11111, 11112, 2112 ELECTROLYTIC CONDENSERS


C311 30 mt., 300V RCE-141 C315,410 I mf.. 50V RCE-090

C379A 10 mf.. 450V RCE-118

C379B 40 mf., 300V RCE-118

C379C 10 mf., 1SOV RCE-118

C431A 20 mf., 300V RCE-I42

C4313 100 mf., 7SV RCE-I42 C451 300 mt., 150V RCE-110 C464 ISO mf.. 300V RCE-143

C465 125 mi.. 350V RCE-I40

TRIMMERS: C105 20-50 mmf. RCY-066 (temp. comp.)

C104,6 1-5 mmf.. RCY-065 (glass tube type

C108 .6-2.4 mm!. RCY-048

C118 .8-1.7 mrnf. RCY-067 (fine tuning)

CONTROLS

DESCRIPTION eEF. NO. PART NO.

Vert. Lin. 4E. ZW R.311 RAC-127 Height 3 meg, 2W R.308 RRC-096 Hor. Hold I 00K(21T2 only) R365 RAC-173 Hor. Hold I 00K(17"only) R.387 RRC-191 Vert. Hold I25K (21T2 only R305 RRC-174 Vert. Hold 125K (17" only) R342 RRC-I93 Brightness 500K(21T2 only) 11.276 RRC-175 Brightness 500K(17" only) 3298 RRC-200

Picture 2 meg R.284 RRC-186 Volume .5 meg 11413 RRC-186 Hor. Drive 5K. 112W 11388 RRC-195 Picture Stabiliser 3 meg R341 RRC-196

(21T2 only) Picture Stabiliser 3 meg

(17" only) R338 RRC-201

WIREWOUND Triode Couplate-. 01 mf. C4I9 REK-002 250K. 500K R.417. 8 Resistor-4.6 ohms, 5W 0.451 RRW-048 20%

Resistor-20 ohms. Globar R457 RRW-051 4K 7 W, 10% R380 RAW-053 1.2 ohms, 10%, 1/2W R375 RRW-058 5,600 ohms. SW, 10% R.282 RRW-079 1, 500 ohms, 10%. SW R452 RRW-082 14E, 140V. Globar 15% R382 RRW-088 3.300 ohms, 10W, 10% R297 RRW -098

COILS


L100 R-F input RU-165 L106 IF trap I. tuning core RU-159 LI36 1.4 uh., V3A osc. "K" RLI-145 L137 Ch. -. 56 uh. heater PLI -144 L138.9 3.3 uh. choke. orange

molded RU-154

LI41 R-F choke RU-152 L254, Video detector a•sy. RLX-035 5,6 L255.6 31 mh.. R-F choke RLF-024 L2S7 Ch. -Video comp. 165uh ALT- 162 263

L262 Via. comp. choke RU-I61 L261 Ch. Vid. peak'g 110uh. RU-108

4.85 ohms L266,7 2nd Vid. IF & tong cor : RU-096 L266 277

3rd Video IF & tuning core

RU-173

L269 Ch. -Video comp. 80 ub. RU-174 L270 354

Ch. -10 rnh in hor. sweep output circuit

RU-138

L271 Ch. -Video comp. 130uh PLI- 185 L351 Hor. hold & adj. slug RLC-091 L3S2 Hor. lin. & un'g core RLD-016 L353 Width control w/adj. co .0 RLD-014 L451 34-supply filter choke RLF-051

TRANSFORMERS


Vert Our. Vert. Output T302 RTO- 117 Hor. Output T3S2 RT0-116 Power Audio Output T405 RT0-081 Yoke D302 RLD-04S Antenna input T100 RLA-037 lot Audio IF T401 PLI-097 Ratio detector am/. T402 RTD-008 Filament T4S1 RTF-002 (for V1.2. & 3) I- F input T201 RTL-137 Headend output TIOI RTL-I39




MISCELLANEOUS


11464

1.51

PM focus a•sy.(17T10 &

PM focus a say. (17T II, Crystal diode RF tuner, complete

Speaker, 5 1/4" PM Rect., Selenium, 35Orna. Ion trap - PM magnet Head-end RF tuner a•••

21TI) 17TI2)

Part of

ALF-059 RLF -060

RLX-035 RJX-050

552707

RER-015 RET-014 RLI-122

V5 6CB6 2nd IF Amplifier

V6 6CB6 3rd IF Amplifier

V7 12AT7 let & and Video Amp.

V9 125N7 Vert. Sweep Generator

V10 25L6GT Vertical Output


V12 6AQ7GT Disc. & Noise Canceller

V13 12SN7GT AFC & Hor. Osc.

V14 25BQ6GT Horizontal Output

V15 1X2A High Voltage Rectifier

Do Not Measure

V16 25W4GT Damper

V17 6AU6 Sound IF

V18 6AU6 Limiter - Amplifier

V19 6AL5 Detector - 1



TEST CONDITIONS

All controls set for normal sweeps,

focus and brightness.

Measurements are in respect to chassis with a 20,000 ohms/voltmeter.


1

1

72

1 1

1 1

VIO 25906

2544 G

VIO 125107 GT

AK or. 05C.

VII 6517 St

1,1•C • C.i.0.1•

it40 »W.

Y I 1L2541

0 1267

1.40C4.4CTIC44 Z.4 -.

P404 Derygnue•

R TUNER

12 6AK5

62 25L6 GT

L265

14011

1.4•11114 44.

111•110 0.1

o 1402

121 251_6 GT

.040 Ournu ,

Lc)t43

VII 6SL7 GT

10P VII-VV

— ,00 SHOWN IN CHA NNE L. - - --- --- 6 POSITION — V2 6AK5

1 1_101 24o. RF L121 L 122

C10.6.4

105

Li01

VI 6AB4 Im RF

1102

AACD

PRODUCTION CHANGES MODELS 17T10, 17T11

17T12, and 21T2, 17T1O-UHF 17T11-UHF 17T12-UHF

1. VERTICAL SWEEP CIRCUIT: (Models 17710-T11-T12

only).

a) To reduce height changes with different settings of the

Brightness control, R276, the resistor in the cathode of

the picture tube was changed from R289, 150,000 ohms

(URD-101) to R277, 220,000 ohms fURD-105).

b) To eliminate compression at the top of the picture, the

resistor across the vertical output transformer, T302, was

changed from R330, 82,000 ohms (URD-095) to R374,

180,000 ohms, (URD-103).

6

51006 5,00C

r I05 L84 2050

98. R 103

560▪ 0

c,3. 9, 3 C cvo3NBv 1%7 V3A OSC

S 00E = Ill'- 2 AT7 ; 11, cRc.:,:02 G(z 12 AT7

m 7/.

uo 3.4( L136 K1• Ci2 10 0 3

RH3 CH5 Cle 9 III t '0 i no', •4 8 i i

C1141_

'2 _

I 45 u7v

60-

14 2,F

F460 F USE

C1128 800

1 (ERIK ANS EARLT PRODUCTION ILP/MEANS LATE PRODUCTION

VOLTAGE MEASUREMENTS: CONTROLS SET FOR NORMA/ SWEEPS.FOCUS. AND BRIGHTNESS. MEASURENTS ARE IN RESPECT TO CHASSIS WITFI A 20,000/1/V METER +I- MEASURED WITH A VTVM.

10011 TRANS. LINE-IF OUTPUT

C13 - 034F î

CI26 800

CID? , 800 ;

C125 — LI38 Boo;

V4 In 1.F. 6CB 6

A17258C v.' 1,2,4 5 7 2

1139

L141

2b?' 8252 100 C26?

5000

43°4

- 1 °C° .9C 2..51

c 255

j Re

AD.( CH TRAP V5 47î"c V6

24o 1. F. 344 IF 6CE16 L26 2b1_022,073 6CB 6

C260 114 >VI / ) IT

8237 100

R256 2204 _

000i

1_266

8285 221

R 260

62 82

to+255y1

e+ 160V #203

5600

• V %0809. M •

FIL AME ST

AGC

•51 4454 L457

•52

••••••••.-

1500

CASI 2658 260 255 v 300 Mr

T:c 465 -1_125 le

• ±C4diA IC464 _MOM! I 20 Mr

_L-1115 21 VTVI 6 V3 C8 VG VI? 6 6C86 64U6 '26'7 2516 1258.7 V•

VFO 1452 L•53 L•54 L 455

7 7 148.1 3 4 3 • 3 4 5

2205A0H02.coLT . 2516G‘ C266 800T 1:.1Ó3 T IC4419000

42a. 2 58176GT 129.761 6SL7GT 25 4.•GT 2 7 7 7 8

S452 POWER

II TRANSLATOR POWER

,. '4672 VO VI

ALL HE•TER CHOKES ..8Q

V16

6AU6 SAL 5 t. •56 V20 v42 6507 6A07 3 4 •

Pem vei

0* 1 " 3 4704 2 1 6.842 1713P4A

NOTE CAPACITOR VALUES ARE 1414 CABINET UNLESS SPECIFIED GROUND RCE-1113 C 379 • 10.0r 4 !..0 v .4 *FOR MODEL 2172 C 379 13 4064 300v 4. LOTS C 1068 150V RC(-I42

C4 31A . 20 111F 300v C•3113 • 100 mr 75v •

2. HORIZONTAL SYNC CIRCUIT: (Models 17110-T11-T12

only). To improve horizontal sync stability under various

conditions of signal strength levels, the feed-back resistor

connected from the grid of the horizontal oscillator (V13B)

to the discriminator (V12) plate was changed from R279,

180,000 ohms (URD-103) to R390, 330,000 ohms (URD-109).

Y 1 DET.

• C265

I 1,4_4

-

6

9 7

54 8 "6. C 267 3- -1

il

e 8296

.297. 5600 3300'›

181-255V

L1256 1.268

07292 3300 lo

1.257 165 711 P.

V 7A I. VIDEO

12AT 7

8.649 1269 2 -

CW,0

8294 '00 3300 8268

22N1EG R295

334

R323642

11110, 11111, 11112, 2112

V 78 2.• VIDEO 4. 12 AT 7

135011

GREEN 1262 f

5271 6800 I_ 261

110.11

REO

269 C TRAP 1.5

.2 70 18

C275 12 71 Il

liZo 50.4 1 .1.0F 274 ≥ 50

11 272 4700

C 213 loll' I.PSMF

..L- Ta--Z-000 -.-- 8274 18 4-255VI R•29 47 4

8343

L270 mr

.258 PICTURE

.70. CONTROL

C284

1- 1 21300

PICTURE IIZR

5339

L250

V PICTURE TUBE

I7BP4A (MODELS 17110,7117T12.

21(P48,2112)

1.284 2204

C295 C294

í# .0054F

290 564

1400v)

#277 2204., 8289. 1504

BERGH/NESS laR 298

1134 VI

8320 y 100.1

5 C316 1551

9 rzoo _Lvc30, VERTICAL SWEEP I 0022

-L C2 91 GENERATOR 1U11 5000 ;284 1 25•17 2 YEG

#288 EI 30 3 'MEG 82

317 394

506 C293 004

e'T

04

3

;

34

R34 25

C37913 4014F 559

I-6801

COOS I 0314 -

I 25 v I

R3.29 2.2MEG

0324 R33,

- 3.3 ME

.560 -4.U2'

VIO VERTICA I. TPUT 25L6GT 25WG (LP) 3

5

HEIGHT ONTR.

R 308 3 1424

VERT HOLD

BLUE R374

R330 ,i1.1? 824

8349 'Boo

vERTIC•k.o 030

P401D -- 2

'1.322

•

J401Di 302 *2322;

PEEN' —

00

• - C438 • _C311 LAC R325 470

11322.8

-1[379e -1-'J'.1'N'Eri T 10 MF

14003,1

R323

3 YEG

R352 224

290V 4

VIIA

5 C354 c353

.0 7411 .70

R353 4704 TAU VIIB

R 354 •711

— V128 csur

R356 .4E6

R340 C356 T 220 \ 'e) VI2C • 8362 554

";Cb2 6SL7GT - R357 - C56,

C4.6. ...C._ CLIPPER C360 MP 680_

VI 2A - SYNC. AMP

GAO 7GT C277 II 555 C1.57. COTS a DISC 8

F1339 - NOISE CANCELLER leox 031à , 4F 184

*2558j

V 13A. 02 sPoGT A FC.

R358 rjn 1501( 4,341 4

Il • - ' 362 3900 C383 -

--- 220 34.

274

.387 aoK

I 7801,71 VOA.

p379e « 390

0308ii

:11t3 ' V I1B ,a-1251476T KOR.OSC

Il 3 c 343 C365

• 70 1 800 2-

) 113 66 •

11.

8373 C369 3168

C368 6 5000

C367 1800 =f--

?Ag.-• "41 401.0 °«

'RE ARI

t I

398 T•311 VI4 154 25806GT

NOR OUTPUT

5 5

35013

I '1;0

• •54

552

3/5

V 15 I X24 KV. RECTIFIER

4376 c376 470414,0TH 500 Eoya

35

Not

, 8403 Cl .14 03

PA OLA

e 20

3

8370 1R380 1.392 'MEG 44 1108. LIN

COMO

T.,p`ee

5

rINIT‘4

•50 I

25W4 GT ,,-,e,h I ,-•-•5 II 11 —c--4 8

5 -WA"-

DAMPER

C377

1200 I 1 : Yea I

R377 J.1102 1

I( eLtÀ.„, €. I

.5MF P4018 , )440V1 D352 HORIZONTAL

OfFLECT ,ON 0213

V17 38 6AU6 AMPLI

- -

tr 91.1.

.014,4ces

R402. 39«

405 220 20X1

6AU6 4.5"c Lela ER-itel

IR

8404 564

roer

c 406

!COG

0, 140.1406

g004 4704

4 5 r - 1 Y19

GALS r DETECTOR

#407 C • 09

270

C.• .2

V 20 650 7

hrt AUDIO

Re3.0.51eg HOLL..0E

- C374 I.' *8

'•-•.cogor V21

25 L6GT 'E r AUD OUTPUT SLUE IO

F405 0 L ,

7800E ,, GRIEE92I

n:M 3 = 0111 , COUPL•TE4819

8L•Cec

to .F4048 8428 474

W84.1 ,'5

3. VERTICAL OUTPUT CIRCUIT: To improve the vertical ceiver, there is a tendency for the cabinet to induce horiz-

linearity, the vertical output tube was changed from 25L6- ontal sync pulses into the vertical system. The condition

GT to 25W6-GT. These tubes are interchangeable and no is recognized by the fact that the vertical sync is weak

change in tube socket wiring was necessary. and unstable.

4 UHF-103 in METAL CABINET 17710, 21T2: When the To eliminate this trouble, connect a .01 mf. 600 y mo lded

UHF-103 Tuner is installed in a metal cabinet-type re- paper capacitor between the front control apron and chassis.

8313

R334 -1-C308 4701( 1054F

A convenient location for this capacitor is on the right-hand

side of the chassis looking at the front. Connect one lead

of the capacitor to the center ground lug of the existing

terminal board and the other lead to a soldering lug to be

mounted under one of the screws fastening the front chas-

sis mounting foot.

11C125, 20C101, 21C201, 21C202, 21C204, 21C206, 21C208, 21C20811, 21C210, 21C214, 2111, 21T1U, 2113,2116 ELECTROLYTIC CONDENSERS


C183

C301,214.

C401

C402

C403A

C403B

C403C

C403A

C40313

C404A

C40413

C404C

C404D CI04, 6

C105

C108

C118

5 mf., 350V

. I mf., 50V

300 inf. , 150V

125 mf. , 350V

125 mf. , 350V

100 inf., 75V

5 mf. , 200V

125 mf., 350V

100 mf.. 75V

50 mf. , 25V

40 mt., 300V

30 mf., 300V

40 mf. , 300V 1-5 mmf.

20-50 mnif.

.6-2. 4.mrnf.

.8-1.7 rnmf.

RCE- 153

RCE-090

RCE- 148

RCE-I40

RCE-145*••

RCE- 145 *5*

ACE- 145***

RCE- 152 //

RCE-152/

RCE- 1468. //

RCE-I46 /

RCE-1461

RCE- 146 /

RCY-065 (glass

RCY-066

RCY-048

RCY-067

tube type)

(Temp. comp. )

(Fine tuning)

CONTROLS

Brightne•s

Hor. Hold

Vert.

Vert. Height

AGC 2

Volume

Volume

Contrast

Contrast

Vert. Integrator

4.6 ohms,

5600 ohms,

3K ohms,

4K ohm•,

31 ohm•,

5 meg.

150 ohms,

470 ohms,

100K

Hold 125K

Lin. 2K

4 meg

meg w/loc-di•tant

500K(ZITI, T1U, T6)

500K

3K(21TI, T1U, T6)

3K WIREWOUND

RI77

15363

15314

15325

15316

.*,R171

15188

15188

15210

R.210

P301

R401

R406

R.404

R404

R402

R378

R.377

R318, 17RRW

ARC -191

RRC-19I

RRC-193

RRC-095

RRC-I90

FtRC-I94* & **

RRC-192

RRC-197 RRC-192

RRC-I97

REK-00I

RRW-048

RRW-079

RAW-095 • & ••

RRW- 101 **. I/. // 1515W-097

RRW -099

RRW-100

-102

couplate

10% 5W

5W

10%, 7. 5W

10%, IOW

300 ma. , Globar

HV. (T/C 125, 20C107)

10%, 5W

5W

COILS


L152

L153, 4

LI55, 6

L155,6

LI57. 8

LI57, 8

LI59 LI60

LI61

L162

L163

,L163

L164

LI65

L166

L169 LI70

L35I

L352*,

L353*,

L401

L402.

LI67, 356, L168. 434

1,202

1.355

38 mc trap w/62 mm!.

1st vid. IF pl. coil, core,

& 47.25 mc trap

2nd vid. IF pl. coil &

41.25 mc trap w/cap

& tuning cores

2nd vid. IF

Vid. det. can a••'y w/

diode receivers using 6BK7-A vid. ampl.

Vid, det, can ase'y w/

diode receiver• using

I2BH7 vid. ampl.

Choke 31 mic.

4. 5 me audio take-off

Peaking coil-I20 mic.

wound on 15K ohms.

1/2 W resi•tor

Peaking coil 265 mic

4. 5 me trap for use ml

receivers incorporating

a l2BH7 vid. ampl.

4. 5 mc trap for use w/

receivers incorporating

a 68K7-A vid. ampl.

Peaking coil-I20 mic. ,

wound on 3900 ohms

Peaking coil-425 mic. Peaking coil-125 mic. ,

wound on 8200 ohms

Choke coil 80 mic. Choke coil 6.8 mi.,

Hor. oec. coil

352**, 3588, // Width control coil &adj. core 353**, 3590. / Hor, lin.

coil & Adj. core Filter ch. lhy., 26 ohms

3 , 5 Choke 2.2 mic.

Head-end complete 357,1721 ch. -10rnic

Choke coil-I. 4 mic.

Choke.3. 3 uh

Choke, 30 oh, flexible

RLI-179

RLP-020

R LP-021

RLP-022 1

RLX-039

RLX-036

RLF -024

R LI-182

RLI -176

R1.1-184

RLI-181

RLI-202

RLI-175•••

R LI-186

RLI-183

R LI-190 i

RLI-191 I

RLC-091

RLD-049

RLD-048

RLF -056

RLI-122

RJX-049

R LI-138

RLI-142

RLI-154

RLI- 177

TRANSFORMERS

DESCRIPTION REF. NO, PART NO

Vert. Output

Yoke

Yoke

Hor. output for use

w/ yoke RLD-042

Hor. output for use w/yoke RLD-042

Hoc, output for use

w/ yoke RLD-050

Nor. output for use

%N./yoke RLD-050

Audio Output

Audio Output

Interstage (4.5 mc)

4.5 me rat. del. ass),

Filament 6.3V Video IF inpui

Video IF

T301

T351

T351

T351

T351

T202

T202

T201

T203

T401

T151

TI51

RTO-121

RLD-0501,/

RLD-042. di ••

RT0-125. & ••

RT0-127. & ••

RT0-1291, I

RTO-130

RT0-123

RT0-124

RU-180

RTD-01.2

RTF-003

RTL-138

RTL-147

(21" Model)

(17025 &20(107)

(21" Model)

(170125 di 20C107) (Table Model)

(Console Model)

(output @ 6 amp.)

with I2BH7)

with 6BK7-A)

MISCELLANEOUS


Xtal Diode. 400 ua 17C125, 20C17, 2IT I

T6, 21C201, C202-C204 C 206-C208-C208

C210-C214

Picture Straightener

2ITI early & late;

21 C201, 2, 4. 6:21C214 Picture Straightener

21TI Late;21T1U;21T3; 21T6;21 C201, 2, 6, 8,

21C210, 21C2-14

Grid Cap• (for 6V3

2ITI)

Fu•e . 1.6 amp. , 125V

Selen. Rect. 35Orria.

PM Focus Unit 21TI

(early) 21C204

PM Focus Unit f/C125, 20C107, ZITI (late)

2ITIU, 2IT3, 21T6,

21C201, 2,6,8,8U,

21c210, 21C214

LOUDSPEAKERS

-T:

-U-

80.

in

214

-

RED-001

REA -003

REA -004

REC-006

REF-008

RER -015

RLF -055

R LF -058

55270-7

S650D-7

S800D 5810D-7

S1012D07

S1212D-7

ROP-025

5 1/4 PM -21T1 (early)

6 1/2PM - 21T6

8" Alnico PM, 3.2 ohm.

21TI (late), 21T11.1. 21T3

8" Alnico PM, -17C125

10" Alnico PM, -20007

12" PM-12C201, 202.204,

206, 208, 208U, 210, 8" PM, 2. 3 ohms 21T1

(late) ZITIU, 2IT3

•

••

•*•

It

//

1st Production

2nd Production

1st, 2nd, & 3rd Production

3rd Production

4th Production

TO TC L355 OF V120(RT0 -12

TO HOR.TOKE 0351

TO TC OF V119

(RTO -125)

TO TC 01119 (RIO -129)

L355 TO c381 (RIO 129- L352 WIDTH CONTROL ONLY)

`..

C3B2 C379 TO TC OF V121

TOV122 FILAMENT(PIN I)

TO V122 FILAMENT(PINI3)

TO VI23 FILAMENT (PIN I) a PICTURE TUBE ANODE TO VI21 FILAMENT(PIN1)

TO V121 FILAMENT(PIN

TO VI23 FILAMENT (PINES

TRANSF. SCHEMATIC RIO -125

RIO -125 TO BE USED WITH YOKE RLD -042 RIO-129 TO BE USED WITH YOKE RLD-050

Wiring Diagram for Horizontal Sweep Output Transformer (21 -inch Models)

8

TRANSF. SCHEMATIC RT0 -129

16-24J424

C382 C379

TO TC OF VI20

(RT1-)27)

(RT0-130)

TO HOR. YOKE 035

(RT0-)30

TO TC OF VII9

(RTO-130)

„2"---. TO C381 L358 WIDTH CONTROL

TO TC OF VI23

TO TC OF VI23

FILAMENT OF VI21 FILAMENT OF VI23

FILAMENT OF VI21 FILAMENT OF VI23 & PICT. TUBE ANODE

..**— eC371

RTO -127 TO BE USED WITH YOKE RLD -042 RT0-130 TO BE USED WITH YOKE RLD -050 MODEL I7C125 OR 20C107

Wiring Diagrams for Horizontal Sweep Output Transformer (Model 17C125 or 20C107)

:701.

lot Production 2nd & 3rd Production

Wiring Diagram for Video Detector Assembly

V102 5100 540.6 Pi cm • MR,* 6 .051 T low 6AK5

IS L.07 2.0 RF uni „Q cizt

VIO 6A134 I07 RF

120

F3ei% nO0

01- POLE

LIO2

R102 «vv.

Cils ills

5100E

1:

1,0

C114 12 I

ARC ft no.oc nove C P79_1374

5600 1

CsOdi

VI034 OSC

(I'd 2 AT 7 Cils

C111.6210

R.,i0111

VI038 CONV

(41)12 AT 7

0,-eT 10113 220e

rIME * R0 11.551MG

0103

4

C32

L131 56

LI»

14

—1

R-F Tuner, Schematic Diagram (4th Production).

TO PIN 5 OF V109 I

TO 17203 3 B C202

TO C205

PRIM SEC

GROUND

• 3 IS

• 4 25

It-12444

4

RLI-I130

Wiring Diagram for 4.5 MC lnterstage Transf T-201

T 201

C204

2

RIO-012

V"

Cl

"0220

Wiring Diagram for Ratio Detector, T203

1

1

74

11C125, 20C101, 21C201, 21C202, 21C204, 21C206, 21C208, 21C2080, 21C210, 21C214, 2111, 2111U, 2113,2116

TUBE LAYOUT

TOP VIEW

Tub• and trimmer location

Note: V122 not used on models 17C123


V113

1 Wiring Diagram for

Video Detector Ass'y

(4th Prod. only)

Wiring Diagram for

L163, 4.5 MC Trap

(4th Prod, only)

11 o

VOLUME CONTROL

MOOELS

9204; 33K

UK*

14,

= Irk:

C212

Pd (2ge'

V109 EOM

AUNO I-7 Ake 180V

5 140V

C173 PROTECTIVE NETWORK LOCATED ON 0645.575 • 150 ANTENNA ORACLE T RM? R F TUNER TERMINALS ,.

, L1WE TO man

Ville 7(1jrj T•IN LEAD V112 •r0 r

i. il

TMS,.:,...."a. 1._ - ... R-F TUNER 900A 1--.• R.25

jute MO 6A05

AU» 111.1! AUCK0 OUTPUT ORANGE

2 COQ R213 210V.,..0

11221

V106 EOM

VE Ce;›,?

R28.?1

101

+2'50V

+140 + OV

1.4201

2- • +250V

V110 44114 r-LOPTER 1114703011

11 r.- 225V 1TIIM. 5.

DITO 25604

0402

7 2 3111 1 GLOSAR

SEE COTE.?

c401x.., 1.40

1,404, 44

'SLOWILOW. 1402

YORE PLUG TERLOCK

5 T401

CHASSM FRONT APRON

TEST POINT

V113A DIT?

"»'14e.,

+250V

NOT USED O SOW SETS/

/11401

NM°

TUT PONT

3a. + 250V

T/03

• +250V

TOAD END

?MADERO FE.

SOW SETS C416 C4I7

,i413E0; 1300

COOS00 C409 800 8001.

WRITE

IZE TEST 0— • POINT

143211

205 14331 eme

.FRINCE 2-2.11 8302

16401(

+200V

.7 TEST ir PONT

O

L151 •7.25MC ItLe040

1 C175

SI C52

v 11 ile••70

TM,


V104 V105 6C84 6C1111

ebrc".

5220 Y"R"*1.1!1:' 27e ANC

* SOON) TAKE 0 F

rms CgA

240V4

4, SCOPE SYNCED AT I/O VERTICAL FREQUENCY KT* SCOPE SYNCED AT I/2 HORIZONTAL FREQUENCY

DISCONIVECT INTEGRATOR OUTPUT TO v114A SO THAT VERT OSOLLATOR DOES NOT INFLUENCE PULSE

45/1. 1.35, NOR.

LO

5

L154 412551 Lr54 tlie..AUC40 41.25NC

TRY E.:_}C.114

48

14

TEST PONT

elbee°'

820 WOO

+250V

C61.8 ROO

oeTECTOR ASIEWILY

aP

058

CM2

mm SOUND TAKE-OF

VII4A TEOY\OSC. V1148

r .V1178 VII9 71/Au? _?>806 •TORZ. OSCH. 0 Hot/ OUTPUT

362 G36 C363

I( -I(-- nee -50Va TC 00 .004? .0047MF ME 150V

R372 R348 iooe

330

$03U

.U K

5354

108 6400 300

00L1AGE MEASUREMENTS ARE IN RESPECT TO CHASSIS WITH A 2C1C4)0C1/ VOLT METEN, 417H CEPITROLS SET FOR NORMAL OPERATION, NO SIGNAL APPLED • MEASURED WITH YTOM

330

• ••

470E

I6V—+ C4044 SOME

+ 250V 4

C374 .C47.8

**

LAO

LISO 26506 7511

B +250V

VICE0 AMPTAFMR

Vat V107A 2•

CONTRAST

14174 VeIV 10«

V115 6447 -ST C313 010T. AMP

0122 Fn.

1/123 F1

0121 FIL

7t1 L354 360

C385. -0047

0579 1371

.25 MF

• C4038 1006W 750

+250 SW

110V

• C472 .21•F 071

270e

5524 OV 10i G-

0301 VERT TOPE

O 51 C 3511

I1S SSiS REAP APRON I

rr-{

TOILE CONN.-SLACK

600V

1424 DV. SECT.

To% FIL LOUP ET- 80057

• - 1114 Jai

C383

.0039

TEST FOOT

7, V108

NOT I. ALL REOSTANCES W OHms ALL CAPACITANCES IN MOTO UNLESS coHEReumE NOTED.

2.NORmAL VOYAGE DROP ACROSS 0402 .10 VOLTS.

:71jP4 OR 200P4

Wiring Diagram for 38.0 MC Trap

(let and 2nd production)

cr.n"

Wiring Diagram for lit Video I-F

(let end 2nd production)

Wiring Diagram for

2nd Video I-F


Wiring Diagram for 4.5 MC

Trap, 1163


Wiring Diagram for Sound

Take-off, 1160

(1 et and 2nd production)

2117 2118 ELECTROLYTIC CONDENSERS

REF. /40. DESCRIPTION PART NO.

C210

C210

C302

C320

C401A

C401B

C402A

C4028

C402C

C403A

C403B

C403C

C403D

1 mid.. 50V

10 mfd.. 50V

I mld., 50V

I mid.. 50V

40 mfd., 350V

90 mfd., 350V

30 mfd., 350V

20 ;TIM., 350V

100 mfd., 75V

40 mfd., 350V

20 mfd., 350V

5 mid., 350V

10 mid., 25V

RCE-090

RCE-169

RCE-090

RCE-090

RCE-154

RCE-I54

RCE-155

RCE-I55

RCE-155

RCE-156

RCE-156

RCE-156

RCE-156

CONTROLS

DESCRIPTION REF. NO PART NO

Volume, 500K ohms

Volume. 3K ohms

Volume, 500K ohms

Brightness, 100K ohms




Contrast, 1/‘ ohms

Hor. Hold, 100K ohms

Vert. Hold, I75K ohms

Vert. Hold, I75K ohms

Vert. Lin, 2K ohms

Height, 4 meg.

WIREWOUND 8402

8220

8167

8220

8176

8372

8176

8372

8167

8360

8318

8310

8324

R320

&R171

8369

8373

8300

8403

8404

RRC-216.

RRC-216 5

FtRC-192T

RRC-213.

RRC-213.

FtRC-210T

RRC-210t

RRC-192T

FtRC-207

RAC-215 5

RRC-223T

FtRC-208

RRC-209

RRW-053

RRW-103

RRW-105

RRW-I06

RRW-079

RRW- 104

4K ohms, 10W

120 ohms, 5W

3.3 ohms, I/2W

5K ohms, 10W

5600 ohms, 5W 3750 ohms, 10W

COILS


L154

L155

L157

L1S8

L159

L161

L162

1-164

L351

L352, 7

L353

L401

1st Video IF

150 mic Choke, wound on

8172

4.5MC Audio Take-off

270 mic. Choke 31 mie Choke

120 mie Choke wound on

8159

220 mie choke

120 mie Choke

Hor. One.

Width

Hor. Lin.

Filter Choke, 4 by

RLI-192

RLI-193

RLI-182

81.1-209

RLI-195

RLI-212

RL1-197

81.1-205

RLC-125

RLD-053

RLD-054

RLF-061

TRANSFORMERS


Vert. Output Hor. Output

Audio Output Audio Output

Power

3rd Video IF

1st di 2nd Video IF Ratio Detector,4.5MC

Audio IF,4.5MC

T301

T351

T203

T203

T401

T153

T151,2

T202

T201

RTO-136

RT0-131

RT0-135 •

RTO-134T

RTP-314

RTL-145

RTL-144

RTD-013

RLI-180

MISCELLANEOUS

REF. NO. DESCRIPTION PART HO.

•

Yoke


complete

Diode Crystal, Germanium

Tuner Unit, complete

B,eaker,5 1/4" PM

3.2 ohms V.C.

Speaker, 6 1/2" PM

3.2 ohms VC

Model 21T8

Model 21T7

RLD-052

RLX-038

RED-003

8.1X-051

S5270•

5650D-7T

Wiring Diagram for 1152

Wiring Diagram for 1153

r - -

4.5 mc Interstag• Transformer Wiring

PT 0-013

to?

C20

Ratio Detector Wiring

TEST POINT. I lb

R-F TUNER

2.400 INC

1 o

1401

TEST TEST

POINT TINT 17-0 0 • 0 •000• 0

TEST POINT

TEST POINT

TEST POINT rz

TEST POINTE

o o

o o

•o TEST..à_ POINT - 5 ° 3,1

TEST POINT

TEST POINTY

POTE:REFER TO SGOIRATIC DIAGRAM FOR LOCATION OF TEST N PIN FOOTS IN CATCARI.

o •

jo o

IOC

.20

•eie-• /acne

lop

VIO2 100 Sie•MI Is GRANNICA F0511105

SAKS 2. RF

v V101

6/194 NF,

002

To rem...mryi

1107 12

A10/

G.12.A

VI032 OS'

Pis/12677 I,. .' c„.

3.50

1: •

«V

I22

3.9 VI036 CONY

(40 12 AT 7 12 cilj.

0122 1100 •

Test Point Diagram

.m.o•

L

CO -A3 LIME

Gi205 el/ OuTPUT

.00 9•4 1104

AG+

R-F Tuner, Schematic Diagram

04.0 T CRY ROMICI R107 ,06, • VICAR

A-. •

Nu/Vat. 1.0V0.G.

_J

RLX-038 4i clot

Y151 GERMANIUM DIODE RED-003 OR 1N64

C167

TO GROUND

TO JUNCTION ol OF R161 6 C164.- "

TO PIN 5 OF VIO?

•-.2•411

L156

C166

Lise

CeVeC5'3`

Video Detector Wiring Diagram

1

1

1

1

76

2111 2118

Tube Location, Bohm View

Tube and Trimmer Location

OUTPUT CIPCISTS OF F TUNER

r1,V1033 2 12AT7 6 CORS

7* - -

041 030 39

Ro4

TERMIVIAL 1303R

LAC

C305 - 0.15Z. MP

6.3 VAC II7V60n,

R41) 220« àW

TEST POINT

X

um E POWER

.1402

1401 T•01

eC'ua i.;; E TRANS-EATON POWER BLACK 6406 220K 25 CAOS .00AF

R309

33«

R336

10014

VIII 6C86

Au010 1-F AMP

TEST PONT

V104 6AU6

1ST. VIDEO 1-F

12.1 r TRAM

R203 4700

V112 6Au6 LIMITER

VII3A 1202 1/2 6T0

- -RTiôöEY1 RATIO DE t 1 TRANS lo I 01

/I1 WM TOTAL

47K .00K

R22I 6206 ,OOK •70K 6207

TEST POINT 27« .21 C208 +260V ; s000

SOUND TAKE-OFF 4.5MC

VI05 SAWA

2 00.110E0 1-F MAY

5 7152

TEST POINT

1210

C2I3 .06W

vOLUME CONTROL

C214

VIDEO DETECTOR ASSEMBLY r-

C152 (TON TRAP 41.25 AK

V6A1.066 8 V107 usi

14.ov

, = GO 3 110.VIDEO I-F ,..6,C0E6 t 0 I-F 0.7

Ti53

17182 C

ItNIÔ ItFi)

VI158 VI I5A I/O 12AT 7 VI 16A 2 12AT7 TES NOSE 2 124,37 STP4C.Nat PONT 7nv INVERTER C303 C304 UPPER

6• R304 ". R303 0, 470 -4.6

•7K 1201E 2 , R306

• C302 :3.5V 470. • IMF = 3 50V • C322 R307

R302 .°3». 4V 600K

+150V 3750 • C4028

+270V oo, 'ow i 2r r 4p1

• C401A ton 3600 +140V -rote . 3,a HEAD ENO

lav —C4015 'OA

D3OME 83 - 50y 31*

VI I9A 1/2 12•u7 ORO. PHASE.DET

L'61 6%14 : 166 * C L Le4 141 340' 1

*- 1

V1138 1/4 6T8 £U010 AMP

R212 4 RAMES

Li57 27e

'3° 1160 3

PIÉ .85V TRAP

170

1811 0-22 2W

Lzoi

+240V

4ip r

C2

V114 6VISGT

611010 OUTPUT

6216

. V108A V109 I, 448 ..os

I ST. VIDEO 6461.. I2* 2 rao.viom /UM

ARV

43510 4-8"

3200

no.

TEST A ra .4, 2.5V PONT '" -

In I -, - -,-

1 VII7A V1178 VII8 .5v 1i2 125.7 128117 SANKT

R310 .I. VERT. 05C. C315VERT 03.C. VERT AMP 303 .332 C36 (3322

WOK P301

.0039.AF 7 3.3., .0039WF C307 I C34 MF C323 Do33 I R313 R3I4 5315 . .047W4- boo ,

R311 1 228 1200 5200 1 2 ' R34 9 8200 IC.308 3 .. 82 ,•• C314

002 8

' Mf R316> R3I9 I 9321 R323 47K • .7MEG 2.2MEG 390 20 3 R342 2W

A A-1f A At'r\r-Lf /V1v/V\91v V

1/2 12Aut

R353 HORLREACT. I

1 'MEG 6 030 470 • R354C358

2 _ 1, 68K 100 220 • 800VT

• R352 C354 __ 173. Ye- ....r."" 19359 27K

VI25 ow 100« 3300 "r 001

RECTIFIER SUAS -F- \,.. R353 8'' ', R35i R358( 5360

II33KC352 I K

EL 22V —. 681( 100

120« --C356 C359

-J301351 R356

560« 220« +240V4—•

VI24 5U4G

RECTIFIER

•

RE TUNER FIL.

I V113 11114 2 vI is vut VIrli v120 V112 4 v121 2 6T8 5 666 2 MAx7 4 12AT7 4 5 i2Au7 9 12Au7 4 6AU6 6C06 7

6405 4 6E01 7 12VINH7 5 0EP48,2 APNGT Vile' V100 5 1106 3 v607

61.111 611U6 4 6[86 4 6AuG SAUS

L163 C7785 3 'TLPIVe5* i 800 LARA CI79

, V109 vno

csoorr7z 44«. 500

z.soo • UHF FIL

HOR.POLD on

C312 lea

VERS LIN-

HEIGHT ,374

Ina

VI 208 V121 1/2 12Au7 6CD6 Z 01504 C366 POR2 OUTPUT

C365

II 300

G377

NOTE RESISTANCE VALUES iN ONIS CAPACITANCE VALUES IN MMED UNLESS OTHERWISE NOTED.

.051W

330 1

Ik69

•-C403C :1.561F A

C402C cow 7sva

csrs .0510 WK

R372 20E

R317

33K R372

NESS TU. WITH

R176

325

470

**

•

+2E0V

CS?

1000

R338 33K

C402A 3010 IN -•••

CONTRAST

RIBS

22K

RI06

471(

22«

NOTE

*SCOPE SYNCED AT 112 VERT Nizoazaoy

IS SCOPE SYNCED AT oz 1.3.o F.couec, r OrSONNECT INTEGRATOR OUTPUT To 0117A

SO THAT VERT OSCILLATOR DOES NOT LS INFLUENCE PULSE

vOLTAGE MEASUREMENTS ARE IN RESPECT TO CHASSA WITH • 2000011 i voL METER. WITH CONTROLS SET FOR NORMAL OPERATION, PO SIGNAL *MAL

• MEASURED WITH vTvld.

M EO LETTERS REFER TO TERMINAL Of TEST PONT DIAGRAM

• VANES WITH CONTRAST CONTROL sun...

V110 21E P41

PICTURE TUSE

▪ 20-120V

R378 C372 2.2MEG OR 1 NE8 550\

V1168 433eR377 1/2 12/a7

19 MEG. 6 mORZ.EIL.

R376

11329 22K Ye.

YOKE CONAL(BLACK)

220 C369 120= V

CM.111 470 2000V

345

L359

10M.

R3110

5K,

L357.30

1.354 WIDTH lOIR

en

NOR. LIN, 11,353

V122 113' ST

RECTIFIER

V123 SAINGT

DAMPER

21C225 21C226 21C221 21C228 21C229 21C230 21C231 21C232 21C233 21120 21121 ELECTROLYTIC CONDENSERS


C210 1 mid., 50V RCE-0905

C210 IO mid., 50V RCE-170T

C2I0 10 mid. , 50V RCE-170.•

C320 1 mfd., 50V RCE-090

C302 1 mid., 50V RCE-090

C401A 40 mid., 350V RCE-154

C40113 90 mid.. 350V RCE-154

C402A 30 mid., 350V RCE-155

C402B 20 mid., 350V RCE-155

C402C 100 mfd., 75V RCE-155•

C403A 40 mfd., 350V RCE-156

C40313 20 rnfd., 350V RCE-156

C403C 5 mfd., 350V RCE-156

C403D 10 mid., 2.5V RCE-156•

C403A 40 mfd., 350V RCE-167

C403B 20 mid., 350V RCE-167

C403C 5 mfd., 350V RCE-167

C403D 25 rafd., 25V RCE-167

C405A 30 mfd.. 350V RCE-168

C4056 20 mid.. 350V RCE-168

C405C 5 mid.. 350V R CE-168

C405D 100 mid., 75V RCE- 68T

C405D 100 mid., 75V RCE-168••

CONTROLS


Volume, 500K ohms 11167 RRC-2160

Volume, 500K ohms 11167 1211C-21799

Brightness, 20K ohms 11392 RRC-245•••T

Brightness, 100K ohms, dual 12176 RRC-213 5

Brig(rtness, 20K ohms, dual R372 REC-213.

Contrast, 3K ohreS R220 EEC-216k

Contrast, 3K ohms 12220 RI2C-217TT

Hor. Field, 100K ohms 11360 RRC-207

Vert. Hold,I75K,dual, (long) 12318 EEC-215

Vert. Hold. 175K. dual (short) 12318 RRC-244 •• .T

Vert. Lin., 2K ohms, R324 FtRC-208

Height, 4 meg. R320 11.12C-209

WIREWOUND

4K ohms, 10W R171 RRW-053

120 ohms, 5W 11360 RRW-103

3.3 ohms,I/2W R373 RRW-105

5K ohms, 10W 12380 IIRW-106

5600 ohms, 5W 11403 1212W-079

1750 ohms, 5W 11404 RI2W-104

COILS


LI54 1st Video IF RLI-192

L155 150 mic choke, wound on

11172. 33K, 112W RLI-193

L157 4.5MC Audio Take-off RLI-226

L157 4. 5 MCAudio Take-off RU-185

L158

L161

270 mie, choke 120 mir choke wound on

RLI-209

12159 RU-212 5

L164 120 mic. choke RLI-205 .

L164 120 mie, choke RU-2059

L166 Peaking, 220 mie. RL1-1979 & ••

LI62 Peaking. 220 mie. RLI-197•

LI69 Peaking, 180 mie. RU-220

L201 3.3 oh, choke RLI -154

L351 Nor. Oscillator RLC-091

L352,51 Width RLD-053•

L353 Nor. Linearity RLD-054 .

L3513 Nor. Lin, must be used

with RTO-146 RLD-056t & ••

L359 Width, must be used with

RTO-146 RLD-058T E ••

L151.50 , 67 Video det. ass'y RLX-038

TRANSFORMERS

DESCRIPTION REF. MO PART NO.

Vert. Output T301 RTO-136

Nor. Output, must be

used with RLD-056

and RLD-058 T352 RT0-146••,T

Nor. Output, must be

used with RLD-053

and RLD-054 T351 RTO-131 5

Audio Output T203 RT0-134TT

Audio Output T203 RT0-1355

Power T401 RTP-314

led Video IF T153 RTL-I45

lot and 2nd Video IF Tist.2 RTL -144

Ratio Detector T202 RTD-014

4.5 MC Audio T201 RU-228

IF 4.5 MC T201 RU-180

V1084

• eat, ...

lo R33..

TO 011 11 1,

U•

ca.

TO MI 7 e ,,iorie•

TO G193 I G1114

1101 I 1:11 v109

111.010.• 1.0.1

000

re>11.1

00••

0105

•

5•260v •

;1ST PC.

1/110 15.8

•NTL•te

•

100.

Lots-Production Vid•o Amplifier, Blanking Circuit and H. V. Supply Circuit

adle TO PIN • or ewe

1.

10 2371

T0103

10 ••• 011.

TO 1.3 ce 0351

'122

..2. .e.I eto• 0701

•

3•

R1117

TO 11328 TO *30 1

(c..1.0.•

C31,2 ▪ os 1.26

.1_74 •••

C

VII6

181

TO .1111 015301

•1413

/2.

113.1

RYPO

•5511 NT‘• • 260v•

41,11

000

0122

4.c ..... •

t.

t 107

0.

1.

84 8/106T

0123

/115 + ire

0.8 Of 010811

MISCELLANEOUS

REF. NO, DESCRIPTION PART NO

6 1/2" PM Spkr. 3. 2 ohm

@ 400 cycles

12" PM Spkr. 3.2 ohms

@ 400 cycles

Crystal Diode. Gerarnium RED-003 Yoke RLD-052 RF Tuner - complete RJX-054

RF Tuner - complete RJX-056

Switch,local-frInge RSS-005 Switch,area RSW-067

• 1st Production

T 2nd Production •• 3rd Production

TT Table Models

• Console Models

1.1114•44114_,

V101 6A84

RFI

vio2 C144 NMI L.6 POSITION SAKS

2 m, RF L 107 Zr

5104 ern(

5117 650

1200

5).33

5600 5102

800

1122

, 9. 121 .; c..3

c tee V103A 3.9 VI038 OSC CONV

c.,o3 ' ° "" k P‘a)12 AT 7 (4 112 AT 7 o. s..,.. /0 T10,5

• I

L102 1 V C116 / ./.., Cet

-

YO 056 (NO

I25•55AL 504110

12

-0 1.

a a

3.5s

0103

;ad

- -

A. Early Production ("EE" Version)

5

800

- ,800

LISO 56s

AGC

650

L

CO-11X I.e

Ten OUTPUT

1C'4 T° 2 5154180 80 ,/ MOTT131.1 • vice

., • rit 2 OV DC 14000G.

7

5126

75

ReLife. 800‘,

100

5 100 SHOWN IN [MANIOC' POSITION

1101

V 01 68K7A.

II Cl2) 680

1122

513 330

5138 200

1.28

o' Itt um 2050

V 0129

5120 • ze o

1102

P79./6.53

R-F Tuner Schematic Diagram

V1038 CONV

(4 1)12 AT 7

" 1' T10,5

2_0 PC.N4

C10911000

:CI35

NS too r 1511

L _

ce -Ax LINE

OUTPUT

OPOTTOSI AGC-11, 04 0‘.0 1 VIEV5

711 24000c. 140var,

91P KIT E SOME [may 14575 USED A CNCNE L,otirt PLACE OF 11-131 _j

B. Lots Production ("BK" 6BK7 Version)

TO CI74 TO PIN1OOF vIto

A • R378 8396

C372 2.2 MEG I MEG +260V4

11(.09.1F R 377

3.9 MEG.

1

C317

TO R32134.-JT 000.°94F

R330

• •":"5.e -1- C318

,OIMF

6

7

VII 6B 1/2 12AX7 HOR Z. BL.

R387

R329 15K

220K

R375

I MEG

svt343141- D

TO WIDTH CONTROL

+ Horizontal Blanking Circuit To I 0> 68-

TO R374 (Late Prod.)

RI72 ,VVV5r-

V1C19 C173 33K

VIDEO AMP .41--1(---43 (MD CHANGE) .1,1 LI55

3.0001) 1500

CI74

BLANKING (NO CHANGE1-1 .2eNt

NORZ. DISCH. STAGE (NO CliANGE1

C366 1 .0047

R368

5

393 3 470K -= I tst R386

126,2W TO C379

R392 20K 3 t

C4030 BRIGHTNESS? 3051

R390 _.J_.J55.4.4 126,1W 84- 260V

V121 6CD6

RI75 cos

2 2IEP4B PI X TUBE

166V

R385 I 0 0

7352

(NO CHANGE)

R389 2 2 MEG

R369 120.0. 5W

R39I 22 K ,2W

M78.1S35A

Brightn•ss Control Circuit (Mid it Late Prod.)

° TEST POINT XII V109

6C16 2 NO VIDEO Awe

TO PIN I Ciel Of vuotte-f-If • 1.6Sur

8184

20K -

TO PiN7. V.°8 .--C403C

1 55'

:Fif9 :12100

TORN'S.

2

73

5172

33K 1155

TEST POSIT

/1 7 4000

.0w

8194

CONTR 4ST 47

RI89

ion

2

IMP Sto' RI13

5195 MEG

-T`leShIC6fr) IR

VItO 2,1848

P1cTuRE TuSE

11 et:: 260V 507805, :613 P82, GA7N;GKE D9170:e 6E65-5_ .711 6CD6 T . SCREEN POT.

0 7(117 r

TO PIN 2 T° Pe C352 Of VII9 OF VII6

,...021.87395

-..-2203c 3508 TO 5353

Mid- g Late-Production Video Amplifier

1 TO R3713 TO 21 C372 L354.

1

78

re.olt 5212210.1

1141.1.[;v11.1

1

.1•211.•215.11C1525

1

7

Ole 1211t1.812.11

1101105n V eal 4trt

te5.1113111•11 reete<1 •

0 11 2.150 ..r

© rm

mireee .1 ,

-g- --0,....• ........ .152••

1:21111. © 11005

.0•0

+2600

MOT Tea

ZMNO.

VI., 0.11..11

ca.•.•• ...2-Rommet

Tube sod Trimmer location

LIM LEM

•:&-

4E-

111221

un-1.11,4

'1.11,0

Of •••••

Tube timeline, peffent Vlsw

WM'

50104... (2.0 P.001 14E1

zee

Midereductlen 11. V. Supply Circuit

21C225 21C226 21C227 21C228 21C229 21C230 21C231 21C232 21C233 21120 21121

A.0


OUTPUT 021CAMS f 2111112111

u• 11•77 COnr

VIII Met

YAM 1-f

VII2 SAM

MO« 011 4Q 022. 204

1.30. •7

VII3A 1/2 ST.

- -RAT0 cmt 1 0040 «0 MANS

/

TEST Ken

0110041ff

CMS

o • +260V TEST PONT 274 I lEt 4260V C20. S000

- I,. peov .e: n-12. .....-0.,..5.0C

2010V I I i_

I i 11 2[55 I i .0«, a V104 V105 V106 V107 N11.9 _0111C2001 000(0,1* ...25«

II& CIS3 22 le [Are Str1040 I-, 111 4405 2 00.0020 1-, Mult 5 M. -V MII• 11151.10115 I C.52 Cop, 22.1-11 11

ca, t55v • t55v

1 S Tly F- 5 T. I 2153 V

TEST .--• *0(10

X

+ 260V VIOC

.erriiiceNeir ses&crârn .PeZugg:

MS Me • THESE .21112704111, =STR:CM110-2 TuMel _

T J44, till"

000 PO.M.

.0102

..30« 070.0041

2001

21140.041...

V

7 r'

+150V I V119A 1r$0 • crone è/2 12.1 V1198 . 1..1,,„„,

15 C3 .. Z. ANASE.04, r 2 .2Au7

I4.0 le -TVA MSS 1135rCL C552 CM +140V " I(

MI NM O SSO MA04.0 4"C°3 f IMO 4 IL OC..... se 030.11 CS« • C3118. . .__........., e MI -.NM 2 1 ma .rw-r..7,......4.

-C-41° IMF . 3500 .e- - C3341 C355- 2702 VI25 i 1.00.c 3300T .occ-

• .0. 'reor Rue IMO' LIN SUM1

RECT.14. - MSS , 330 MO 1000 NORM/0

22V 120.

5124 1_ SMS +240V4

nun.... M•

V 4307 DOM

/

3100 231.1 11.2

+260V

VI138 In ST. LIMO AMP

65V L201

V114 trier

MVO OuTPuT

C. ., AlIO

10V NOT 024 220 •70 •• 2.

coo

V1011A Izo Sue

I 11.010 C.

Iles

,''«ï , -, e - - ::42.51/ ry-II

il\--T VII7A 35V %gin vtte 30V In lam/ 72 12507 SANSGT

_ I 0EMOSC. «I« OSC. «RE MP

_ Cs.5 4.3 .337 CI., MU 240V * la V

umf FL

Wiring Diagram fer T133 Wiring Diagram fer 2132

0.05 MM.

LAS 078 LISO L••• MO Clou CITA

CI« 500 .00

là.0-0311

1[1.110.61 0.002 1(0 005 01

C11111

10 41.11:1

To A...Tee .1.•1 oe 1.1 ace

TO 21.

052

C1111

V120A ./2 ez•u7 .10.1

2110 -20

TO-

00 corm >3s3

SMACK.

0345 .344

I ..o -q ...Z liel-w..--: C3101

470

9".fr#

VI209 5121 v2 12Au SCOS

C.1.4 MORI OUTPUT

NO"' weeeitestre. MUSS OTNINMS4 NOTED. L.. INOMITES 1..ATER WPM.

IT «MAT« EARLY «MM.

ruNCT.. Or 44111 • 1.0.63;)

0.051 • LOS

Vid.. Detector Wiring Diagram

• +260V

•••82.0611

C207

10 OF tr3

T.?

T203

it,O•

+260V •4

5109 ecos

z.60.VIC40 abge

"EE" SERIES SOTE

• icon SMICSO AT ért MITT MOOR,

••100.4 MAX. AT tit IOU flIOMMICT

SAVE SNAKS TAXI. WITH .0.1.44. «MM. APPLIED

•.110002 ser Tu.. TO MT./ Trim Ilmit MOM

.11.TAGE MERIMMENTS AM IN RESPECT TO Cm«. •01014 A 1000011,00sT 114TEN wow cœTIMS 547 FM «Mom OPERSTION NO MOM AMNIED

• IMMURED ee 4 rive

TEST PONT

VaUebV4Ver,..,7`.7..lar«,0,-

VII0 lo PM

MUM TU«

4400 C3.8 6. .375

'MG

CM« 5122 24•70 011.1-GT

20XN Pccre-44

0141

2a 43.4

120m M.

LIST

Tex

jJI

%red 0209

TOC; PIN S

T01120 s C20

TO PO4 5 Of 052

Retie Detector Wiring

V123 SAmST Om«.

Al t I

:2•L . C-entr-

• •

1=0 L.:. •••

17C127 11115 17117 21C114 21C115 21C116 21C111 21C119 21C120 21C121 21110 21111 21112 21114 21115 21119 ELECTROLYTIC CONDENSERS


C167

C309

C401A

C40IB

C401C

C401D C402A

C402B

C402C

C402D

1 mfd., 50V

10 mid.. 25V

90 mid., 350V

30 tnfd., 350V

5 mid., 350V

100 mfd., 75V 40 mfd., 350V

40 mid., 350V

30 mfd., 350V 10 mid.. 25V

RCE-176

RCE-170

RCE-163

RCE-163

RCE-163

RCE-163

RCE-161

RCE-161

RCE-161

RCE-161

CONTROLS

DESCRIPTION REF MO. PART NO.

Volume

Volume

Volume,

Brightness,

Brightness,

Contrast,

Contrast,

Contrast,

Nor. Hold, Vert. Hold,

Vert. Hold.

Vert. Hold Vert. Lin.,

Height,

Height, Area, 2

Area, 2

4K ohms,

150 ohms,

5K ohms,

3.3 ohms, 3K ohms,

5,600 ohms,

:r1OK.., 1/8" Sh.sit

, 500K, 2 3/8"

500K, 3 1/4" Shaft

100K, 2 I/2"Shaft

100K.2 9/16"Shaft

700 ohms, 3

700 ohms, 2 343"Shaft

750 ohms, 3 I/4"Shaft

200K ohms

I25K, 2 9,46"

125K, 13/16" ,125K. 2 1/2"

4K ohms,

2 meg.. Knurl

3 meg. Knurl

meg., Knurl

meg., Slotted WIRE WOUND

Shalt

1/9"Shaft

Shaft

Shaft Shaft

w.w.

Shaft

Shaft

Shaft

Shaft

R178

R178

R178

R175

R175

R320

R320 11320

R264

R205

R205

16205

16211

16180

R221

R207

R188

16172

16270

R272

R273

R402

R404

FtRC-211 RRC-233

RRC-236

RRC-191

RRC-222 RRC-211

RRC-233 RRC-236

RRC-219 RRC-237

RRC-243

FtRC-193 RRC-218

RRC-225

RRC-246

FtRC-225

FtRC-235

RRW-053

RRW-100

RRW-106. 8. f

KR W-105

RRW-095 RRW-079

10W

4W

IOW

1/2 W

7.5W

SW

COILS


L152

1.154 .56

L155

L157 &

L158

LI59

L251

L252

L253

L401

L154

L160

1st Video IF Grid

& 60 Trap Assy 47 mic. cathode choke

254 Choke, 10 mie.

300 mic. plate coil 270 mic, plate coil

Hor. M. V. stabilizer

Width

Flor. linearity 13+ Filter choke, 1.5 hy

Choke. 31 oh

Choke, 1 3 ich

RLI-192

RLI-215

RLI -214

RLI-138

RL1-208

RLI-209 RLI- 210

RLD-058

RLD-057

RLF-062

RLF-024

RLI-216

TRANSFORMERS

DESCRIPTION REF NO PART NO.

Vert. Output

Hot. Output

Audio Output for

ROP-IRS & S1212D-7

Audio Output for S527

D7 di S625-D7

1st and 2nd Vid. IF

Ratio Detector


IF Filter (40 MC)

Audio (4.5MC) 2 core

type

Interstage 3. 3mrnf Power

1201

T251

T303

T303

T151-2

T302

TI53

T301

T301 T401

RTO-142

RTO-141

RTO-140

RT0-139

RTL-144

RTD-014

RLX-042

RLW-010

R1.1-228t E •

RLI-180. RTP-315

MISCELLANEOUS


YI51

• f

•'•

Speaker. 5 1/4" PM

Speaker, 6 1/4" PM

Speaker, 10" PM

Speaker, 12" PM

RF Tuner Complete

RF Tuner Complete

RF Tuner "D" version

Complete Yoke Crystal diode Germ.

1st ProdUction 2nd Production

3rd Production

S-527-D7

S-625-D7

ROP-018

S-1212-137

RJX-052

RJX-053

RJX-057

KID-052 RED-003

302

Wiring Diagram for L156

Wiring Diagram for T301

s.



ANTENNA INPUT

TERMINAL S

1100

® AC o

es-a+ 250V

NOTE 01 ARROWS INDICATE DIRECTION OF ROTATION FROM CH2 TO C.13 SWITCH SHOWN IN CHO POSITION

121 Santo., WAFERS S1, 52,53.54 GANGED

1311E P1 INDICATES EARLY PRODUCTION, (L.P.) INDICATES LATE PRODUCTION.

141 MINOR CIRCUIT VARIATIONS HAY BE ENCOUNTERED IN A FEW TUNERS.

A MEASURED WITH VIVIA 8404

F PONT

V101 6EICS RF AMR LIGO

52 RE AR

LI 04

I ''C

RIOS

C103

cISC

clot 8106 eoo CEP.)e zoo

/VW 54 59

FRONT RE AR

uo5

LIS3

TO CHASSIS

41.25 MC TRAP

11.41.1"

TO 0156

CHASSIS


5.685W

»HL .P1

LIS!

TO CHASSIS

eoo I

104

FINE T UNING

C152

CHASSIS


1.110 10

RI 07 ISK

41.

5.1

111IN

621E.P.1

(L.P.) -se/

If? lAC

CON V.

VIO2B ,7? r>J6

OSC.

T-81,1417

2/50

— CIES Z .sooc

L

Ch

1

I's

1 .800

LOS"

<\i=

0

• • o o

ØI' F OUTPUT

0, 135V

06.3 v AC

C)

Schematic Diagram for R-F Tuner RJX-052 or RJX-053

C165

VIDEO DEI

L156

TEST POINT

AGC 1 F

AGC RF TUNE

CI53 .05MF

253 Late Production AGC Circuit

32-keS,

RI83

470K I/2 W

RI84 220K

0171 .2

RI 88 AREA CONTROL ¿MEG

4 TOK

C253 470


V107A SYNC CLIPPER

CHAS515 CEPS


Fig. 40. Schematic Diagram for R-F Tuner, RJX-057

/01.104

8.260V

caew11,4

Rot

CUM e,,,je

8109 04,44,1•11440110

V.7A:

POCiel 101 •1414.• .0.04 001,1•

Ce 44.

Vertical Output Blanking Circuit & Pix Tube Circuit (Mid & Late Production)

8+ 250V

R201 0202 8202

82A K)00 826

TO PIN I _....C201 OF 5(07 1-.001MF 111 2 54 -air

0203 470

R22I

*Rif. 3 MEG

R220 V110 4.7 MEG 6.15

VERT OSC

B + BOOST

VIII 6AHACT

C206 R208 VERT. OUTP.

TO T201 5 AC208

TO 8181

R210 330 401 •

100

LIN. VERT. MF

R211 4K

• 111J.011.

Vertical Sire Circuit (Mid & Late Production)

1

1

1

80

1 11C121 11115 11117 21C114 21C115 21C116 21C111 21C119 21C120 21C121 21110 21111 21112 21114 21115 21119

1

1

Tube and Trimmeir Location

Ke*

LI52

Le3 L151 e .Kree (13

TISI

noel.

n-reTL

US6

OGLE POIo

Tahne and Trimmer Location, Bottom View

T401

IA a., 0%01

R263 at Horizontal Hold Control

changed from 47K to 68K ohms

in later production

1

tO

504-G

1403 YOKE PLUG INTERLOCK

I 5401

V +250V

OUTPUT CIRCUITS OF R-F TUNER UNIT 842 052057

V102A j2-6J6

CO//V.

8404

TUNER AGC

F.,...71.filcesmil 2, 2f. nAIR_U,L017.,

V102A 1 1/2 I2AT7 CONN 1

F401 FUSE 4 AMP

1170

'7>W4C'0K1 402

1 401

II 711.60

1 •01

T 4c I

HEAD END FIL. UHF FR_

V120 VI21 3u•G 31..6 PE CY AEC

Late Prod. Pow's, Transformer Wiring

V120 V121 5u4G SU AS RE CT REEL


V103 V104 6CB6 6CB6 1ST I-F 1-F

220V T15, 2ND 200V ns2

41.25 MC TRAP

CI56 6

800 CI52

POINT I X TEST

+250V FL.6.3V AC

AGE

28e"

2402 FOR UHF ONLY)

R402

8134 V +160V 100K

IE OR 471(

• TEST POINT

Chi .21(IF

10 OUTPUT

• • • C402A 470 .1 -my

- 350V .3 OMVF

5,03 ,2 4 , v 1▪ 9 V107 5112 vuS

_35

6C 136 6C N 6AH4G T bv6GT 12AT7 12AU7 64144

°C*AD

+160V

i-225V

13+260V

OV

6Au6

3

2 4)

V106 V118 v108 v109 Vil6 V113 12AT 7 6TH GAG? PIG 6C86 6806

(OR 6E1.6)

NOTE ER275 MAY BE REMOVED TO (OTERO RANGE OF SYNC CONTRCt

ALL RESISTANCES IN OHMS ALL CAPACITANCES IN MMED UNLESS

OTHERWISE NOTED. K • 1000 MEG •1,000.000

(ITT p.KNENCATES 1ST PRODUCTION. (21-40 PI INDICATES 2410 PRODUCTION. ( spDp.) INDICATES 3R0 PRODUCTION.

DOTTED UNES INDICATE LATER PRODUCTIONS. CIRCLED NUMBERS AT YOKE REFER TO PIN CONNECTIONS ON YOKE PLUG

*SCOPE SYNCED AT 1,2 VERT. FREQUENCY. ** SCOPE SYNCED AT I/ 2 140611. FREQUENCY.

WAVE SHAPES TAKEN WITH NORMAL CONTROL SETTINGS & NORMAL SIGNAL APPLIED.

VOLTAGE MEASUREMENTS ARE IN RESPECT TO CHASSIS WITH A 200000/VOLT METER, WITH CONTROLS SET FOR NORMAL OPERATeON, NO SIGNAL APPLIED

MEASURED WITH VTVM

ENCIRCLED LETTERS REFER TO TERMINAL BOARDS OF TEST POINT DIAGRAM

2.2 MEG

RITO 1 mEG R188

F1,77 2 MEG AREA

CONTROL

/

00V

TEST POINT

8+260V

f:îe % r02e145 C25,

C MF 47 - .. 2 70 5.,,27,4_,427503

V116 AC 86

AVOID I-F AMR

2V R301 180

210V

VIO7A I/O 12AT T YAC. CLIP.

13+260

I.

45V—

C203 . 470

1,212A77 PHASE OET.

-).75V

*

n'41 0.41[iTl

VIO5 6C66 3P0 IF 200v

8+260V

-r 95V

P01

7151 LIST 7153 - 10 pt.

C172

I(

L154 3186

nE e TEST

C165 POINT

68

L156

V106A V1066 I/O 12477 SYNC OWL

RI62 RISOS 3 3-314 2.2 MFG

8214 R207 ROIS

2.7MEG

V110 625 RD OSC.

5i7 R202 R201 202 626

, rJor

T 301 V 117 TRANS 45 MC SAUR

1 LIMITER

R303 4700 1W

R305 10014

POINTT

23

C204 IMF

• 7 R258 100%

"9/2e

8 V A

R252 2.28

R 306 470K

B+260V

204ES 1 MEG OR 1.3 MEL

R206 1.4 GOP

27v cms

9 .5.3V 8204 10014

8205 1256

VERT HOLD

8259 826

7**

7302

[1:1 RATIO TRANS

C256

IIG

Z.5000

6208 iOOK Ann.,

.022 MF

11166 68K OR 31K

1/2 I2AT 7 NOISE CANCL

CI66 .2MF

8 + BOOST Mal a-vic,9)

V 111 6AH4GT

VERT. OUTPUT

VERT. LIN.

C4010 100 MF 75V

V 12 12•117 HOR. M.V.

60 R260

‘ 560 2 I

/

#261 8.2V 8214

C257_ 82,5,1 8264 .001 220K<: ZOOK MF > HOP,

C258 , HOLD 0 5MF_._ ,-,. —

SEE NOTE •

V 118 A 1/2 678 RATIO DET.

8257 NNW' 10K

20V

TEST POINT

31 , C3I2 VOLUME 22K OIMF «: CONTROL

- C314

C311 OST.0 e ChLY

— 500K

C309 _

25V

(C317

.01ME

CONSkES ONLY

C2081_ 047

14300 15 MEGCNI)&3RD Pl

"F" SERIES

VIOB 6•47

c,66 VIDEO AMPL

.05MF RI68 2206

Ir2

CONTRAST CONTROL

— C167 • I MF 50V

8169 2.2 MEG.

8+260V

GREEN

nrro 225V " K

1.5 0178 700

SAIF 354/V

(1;- C169 BOO OR 750

18173 8216

300V

D20)

DEFL TCKE 3911

R 75 100K

= BRIGHTNESS

4 600. R 7 3511

R212 L. — _ _ _ 470

>13+260V

8269 330

R267 6800

VII8B 1/4 6T13

AUDIO AMP.

8314 470K

6806 HOR OUT.

8210 ISO w

C263

C4020 1044F 25V

8271 ,K 2W

B+260V: 7

V119 606 ST

AUDIO OUTP.

C3I6 23 BLuE .0013Ali TO 1000V T.

5

C265 .0IME_._

-r

+255V

(3F0 PI 8

0913 14V 470K

/). 260V R317 470 ZW

+240V

RED

100v

V109 PICTURE TUBE 17QP4,21EP4-A

••—I6KV

8+260V

V114 1133

11V RECT,

8307 2.21(13RDP)

61.4 PAMPER

MORO. LIN. C268

*à4DE I

C2671

Ti

lira+ 130057

B+ 260V

LOUDSPEAKER

81

1 11120 21122 21123 21124 21125 21C103 21C104 21C105



C400A 60 mi., 350V. RCE-173

C400B 80 mf, 350V. RCE-173

C400C 40 mf, 350V. RCE-173

C400D 20 ml. 350V. RCE-173

C308 5 mi., 50V. RCE-174

C235, 620 rnf, 300V. RCE-175

CONTROLS


Brightness& Vert. Hold 11177 R231 RRC-252

Volume dual, 500K ohms. R307 RRC-250 Contrast dual, 700K ohm•. R171 •RRC-250

Hor Hold 100K ohm•. 11255 RRC-247

Vert, SIze 3 rnegohrn. R233 RRC-246

Vert Lln. 2K ohm•. R236 RRC-248

100K ohm•. R400 RFLF -001 4,000 ohm•, 5W. 11175 RRW-053

3.3 ohm., 112W. 11268 RRW-I05

COWS

REF. HO. DESCRIPTION PART NO.

L151 1.1 video IF. RL1-192

LI53 Choke 31 uh. RLF-024

LI54 Choke 330 oh. RLI-194

LISO Choke. 10 uh. RL1-138

L254 Choke, 10 oh. RLI-138

LI70 Choke, 100 uh. RLI-241

L173 Choke, 180 oh. RU-220

L174 Choke, 390 uh, RU-270

L25G Hor. •tabilieer coil. RU-247

L.251 Horie. .i.e. RLD-058

L252 Horiz. linearity. RLD-060

L300 Sound take-off. RU-243

TRANSFORMERS


Vert. Output T200 RTO-154

Hor Output T250 RTO-149

Power T400 RTP-318

Audio Output T301 RTO-156

3rd video IF coil. T152 RU-269

Ratio dei. 4.5 rnc. T300 RTD-015

list video IF. T150 RTL-I53

2nd video IF. T151 RTL-I55

MISCELLANEOUS

REF NO. DESCRIPTION PART MO.

VHF tuner complete. RJ X-059 or 062

UHF tuner complete. RUX-001

UHF tuner complete. RUX-002

Spk-5 I/4" 3.2 ohms •5527D-7

Alnico.

SPK-8" 3. 2 ohms, PM S8250-7

Alnico model. 2 IC103

and 2IC104.

• For model. 17T20, 21T22, 23, 24.25.

F---TUNER CORD LENGTH-1 711/4 INCHES

—71

STEP 9 3 COMPLETE

TURNS

r - -

DIAL CORDING FOR UHF TUNER

DIAL CORDING FOR VHF TUNER

TO Ewe OUTPUT

Late Production Changes:

a. R230 changed to 100,000 ohms.

b. Dotted resistor between plus 130V and ground (in power supply) now used

in all chassis. Value changed to 22,000 ohms, 2W (URF-081) and desig-

nated R406.

c. Horizontal Output tube changed from 6BQ6GT to 6BQ6GA.

d. A 4.7 Meg resistor (URD-137), R269, has been added between plus 275V

and the grid, pin 7, of Horizontal Oscillator V110, assuring positive

starting of oscillator.

110

LIO1

CRYSTAL TEST

ANTENNA INPUT P0/PIT 30011 OJ Pur b

• •

e

REARS1P5

A.

FRONT•PS

V +I75V eme E ORANGE)

REAR #4

L2

L•

CIA

L6.

YI 33 IN132A

5

C2

Due

EIF +135V AGC 6 3VAG 6 3VAG +250V To UHF (O//TE) (BROwN I TO UHF INE01

• 1.1580 ON RECt7vERS EQUIPIED Fe* We

COLPING

•

CII3

C4

L8

6 3vAC +135s, VI

CS Ems CO (000 — ou

I

Ell

8200

LO

L13

C I C

hO

CI TUNING, GANGED

P2 6800 iw

SCHEMATIC DIAGRAM FOR UHF TUNER RUX-001

V101 V102 6007A EXE,

REAR

V102A 02 608 OSO

C1-2

no.neoà.

I35V 10RANGE)

FRONT

b.5

_Otr

SCHEMATIC FOR VHF TUNER (HEAD—END)

REAR le2 VIO2B

6X0 CONy

>AM 15«

.—IFTESTa POINT

MC«

LISS 20

TO r r AMP

orYlk.55 OTMINAITA KITH? CAPNOIERS sow THEN I- EN. CAPACITORS LESS TWIN I- NW FIESIETONS ARE 112 MATT - 000 1.1.1.000.000

SYNTOES VIEWED NEON. FreoVr OF %NM TUNES FACING DONNY/AM SWITCH EMONT. IN CHVENEE .013 POSITION

1

82

E) VIOI

1

1

10

TUBE LAYOUT TOP YIE•

se

TUSE LAYOUT SOTTO* VIEW

FOR TUNERS USED, SEE PAGE 82.

rye« TUNER RJX -059 OR RIT -06217 VIEW/

OUTPUT CIRCUIT

T101

TEST UPPOINT

J,3,1,1e© J

8FIN. ORANGE RED ORANGE/ FIL. +130V +250V W11 TE

+130

WHITE HE ACC

VII4 6AU6

20010 1-f

C301 20 T L300 :43 Ili

T300

?70V u31 0 1

- V '

_

R 301 330

V103 6096

1ST VIDF_O I - F

8(64 •1.1+V

- 18 LI51 .

T 11504 4725

MC TRAP"

4- TO TEST UHF )POINT

(80V VHF POS.) ¡1310V UHF POS)

11120 21122 21123 21124 21125 21C103 21C104 21C105

"G" LINE 33V

800 056

R154 BOO 3.3K % 1W ••

R152

f2 7M I C8107) —r C352 00

RI 79

1_c168

1 800

DISTANT

VII7

Aulta5OutPuT C30

8303

22K C306-17-11 C305 1 -r _004

.001 R308+8275V

470K _cri

7 -r 31 • -IV =.00301220

Il I

C?nV

304 7 I000V

LoCji0V • I 70V 5

II 1 OK I R305 nr_R307 500K i4

12

1 *SCOPE SYNCED AT 1/2 VERT. FREQUENCY. ** SCOPE SYNCED AT 1/2 HOR1Z. FREQUENCY.

WAVE SHAPES TAKEN WITH NORMAL CONTROL SETTINGS A NORMAL SIGNAL APPL(O•

HORIZONTAL OUTPUT TUBE TYPE CHANGE

ALL "G" AND "H" MODELS

The horizontal output tube type ha• been changed

from a 615Q6GT to a 613Q6GA. This improved

tube is a direct replacement but may, in some in-

stances, require bending of the spring shield to

occomodat• the lorg•r bulb size.

VOLTAGE MEASUREMENTS ARE IN RESPECT TO CHASSIS WITH A 20,00011/VOLT METER WITH CONTROLS SET FOR NORMAL OPERATION.NO SIGNAL APPLIED.

L MEASURED WITH VTVAII•

• VARIES WITH CONTRAST CONTROL.

V I 18

-I R306 6.81+

r—

EARLY PROD.' SETS 12 4,

') 2W

R3I0 510

B+2601

25V

LOW Bi-130V

275V

V104 GCBS

2M) VICE0 1-F m1151

eer--

2 Ce IV .75V

R401 -e---m - t-c42 TO RF TUNER+130V

=800 +130V

•_T_C400C R403 43= TO R -F TUNER

+250V

.05 8405 =

./04000. +26°V 350V

+275V

V116.1 :T 0404 90) 5 - UHF

RAYS TUNER FIL

416'

+130V

V105

6096 3RID VIDEO I-F

IW RISA 180

RI63

0154 800

5

T 152 Ci6i

R168 47K

le

_LCI69 _LC165 2800

Y150 LOS -

2I7V cE'ZIirNrrilel, y55

7 122V C159 C I S «-« 31" g7

600

8160 6 8K I W

• •

+275V +275V

6CS6 SE CANCELLER. CLIPPER

DISTANT

5201A

LOCAL

8207 8208

10M 82011

** V

Bt275V

4.5V

V1088 I/2 12AU7

PHASE DEI.

,5.7V

R254

150K

12M 8251, 100K MORI Z FIQI4)

5V

8209 6 2K

8203 I6K 2W

TEST POINT

©

IV2" IC2,235: -

*Sr UNLESS OTHERWISE NOTED

\-...,.... 2 CAPACITORS MORE THAN1 • MMF 1>4V CAPACITORS LE SS THAN I • MF

RESISTORS ARE 1/2 WATT K• 1000 I4 • 1.000,000

8210 I2K

8161 1_154

3.31." 3'3Up4

54V

V108A 1/2 I2AU7

PHASE SPOTTER

0203 005 /

L250 HORIZ STAB.

220V 6

R225

50eK

10K

VII 0 12ATI

HORZ.06C.

257.510

162 54701<

0166 2 BOO

C225 13047

143;T m

I7V

À V106 128Y7 VIDEO AMP

LI70 CITO

25V

+130V 4

R227

33K

R2

R228

82K jp228

'001

C229 1470

R23I --= 150K

VERT.

57V

8262 82K

C261

171 LI72

7 Ca 2K 73

19 27V

= UM

RI75 4K SW

ISN'T 13Z

R 7 100K

8RIGFIT NE SS

• +130V +275V +130V

75V

/

V109A 1/2 128H7 VERT. 0 SC

R233 3M

VERIS1ZE

6M 30V C23I 022

R234 3 22

• 022

VIII

660601 HOFIZ OUTPUT

+275V INT

R261 8272

470K •70K

T250

B+275V

2W

£260 .05

V109 B 1/2 2E017

VERT. OUTPUT

500V

170 P4

2IARP4 21ARP4A OR

211P4 8

8+ BOOST 500y

C234 R241

1_ 8242 022 33K IC233

.01

7011

- R244 R2 230 R231 43 RED

1 7K IM 1 hi 1213

C23711 I K R235

_G262 ^ 240

5621 1

14- /- ! V12D5T 11 1"6 „,

2.. 6n 1,0000 111211110 1--‘

VERT LIN

L 254 , I/00

°

C265

.068 600V

TEL

5/1A. 4.7X

CITE

_L-I( -= DI

RI78 2.2

1050V

R 238 500V vv,5 4.71(,2W

VII2

1 8301 KV RECT

VII3 6AX4 GT

DAMPER

C-2€.4 B••• L252 21M

01 40412 LIM 8f07/1.) 000

8+ BOOST

vr .14,84 111,43+275V

21126 21121 21C240 21C241 ELECTROLYTIC CONDENSERS


C4OZA

C402B

C402C

C40213

C40IA C40IB

C401C

C401D

C404

C309

40 mf, 350V.

40 mf, 350V.

30 mf, 350V.

10 mf, 25V.

90 mf, 350V.

30 mf, 350V.

5 mf, 350V,

100 mf, 75V.

10 mf, 350V.

10 mf, 25V.

RCE- 161

ACE-161

ACE-161

ACE-161

ACE-163

RCE-I63

ACE-163

RCE-163

ACE-188

RCE-I92

CONTROLS


Vert. Hold 150K ohm..

Vert Sloe 3 megohrn.

Vert Lin. 2K ohms.

Brightne•• 100K ohms.

Horiz. Hold 25K ohms.

Area k•witch 2 meg. (S2001

Volume 500K ohms.

Volume 550K ohm,

Contrast 700K ohm..

Contraet 700K ohms.

WIRE WOUNDS

4,000 ohm•, 101W. , ww

3. 3 ohm., I/2W., ww

4,000 ohm., 5W., ww

8,300 ohms, 5W., ww

150 ohms, 4 W., ww

R205

A207

11211

RI75

R264

R221

A320

R310

A178

R178

RI72

R273

R227

R402 A270

ARC-252

RRC-246

RAC-208

RRC-252

ARC-276

RRC -289

•RRC-286

••RRC-287

.1112C-286

••RRC-287

RRW-05 3

RRW- 105 RAW-101

RRW- 1 I I

RRW- 120

COILS


LI52

LI54

LI55,

LI62

LI62

LI58

LI60

LI60

L25I

1252

L253

L401

LI57

L254

lilt video IF grid.

31 uh choke coil.

159,161

68 oh choke coil.

3.3 oh choke coil.

2.2 oh choke coil.

180 uh on R170 I2K.

Choke-220 oh.

Choke-I50 oh.

Horis •tabiliser.

Hor Rise coil.

Hor linearity. B plu• filter choke.

10 uh choke.

10 oh choke.

RLI-192

ALF-024

RLI-261

RLI-154 (2nd Prod.)

RLI-122

RL1-300

ALI-197

RL1-263(2nd Prod. I

ALI-247

RLD 058

RLD 060

ALF 062

R LI-138

ILL1-138

TRANSFORMERS


Vert. Osc.

Vert. Output

Hor. Output

Power

4.5 Inc audio IF.

Ratio detector

1.t video IF.

Znd video IF.

Video detector

Audio output

Audio output

T201

T251

T401

T301

T302

T151 TI52

T153 T303

T303

RT0-159

ATO-150 RTP-321

ALI-280

RTD-015

RTL- 144

RTL -144

RT L-154

••RT0-139 •RT0-140

MISCELLANEOUS


RF tuner complete.

UHF tuner complete.

UHF tuner complete.

Spk-10" 3.2 ohm. PM

Alnico.

Spk-6 I/2" 3. 2. ohms

PM Alnico.

• Model. 21C240-C24 L no Modele 2IT26-T27.

Yoke Crystal diode.

RJ X-059 or 062

RUX-001

AUX-002

•ROP-018

•*56500-7

RLD-052

RED-001

VHF ANT

1100

U00 -F RAP

— C100 110

TO UHF OUTPUT TIOI

L101

_tam '-Cot

LK72 035

REAR 431,5

REAR #4

• • • •• • ••

FRONT f. c e 4 •

• •

R100 Cue

V V +I75V +I35V AGC (WHITE- TO UHF (WHITE) ORANGE)

V101 68070 RF

•.1.• 1

R102 100 _L

68070

6 3VAG (BROWN)

V102 6X8

REAR #3

L II Co 3 LI 12 CO 2

LI 6 CO 3

V102A 1/2 6X8 OSC.

• •*" FN 6

479K y 6,

P 22 ) F-M_4"11r

• 6 3VAC +250V +135V TO UHF (RED) (ORANGE)

• USED ON RECEIVERS EQUIPPED FOR UHF

C116 82

(ge.P)

FRONT *I 1 1,

1/115 Ç L9 ISK

C" L123 (214AP

R108 10K

(ISZP)

VIO2B 1/2 6X8 CONV

7 %

RII0 I5K

e reSETR RIII POINT

150K

REAR *I

CI ,2

LI26 cm 5 L127 CM?

o FRONT Die ee 3

9

LI 8 44MC

REAR

ISO B Lii7A 7c

(47 ..10-1 3 C115 NI -BAND COUPUNG STRAP

h122 CO7

IJ20 COP

CI 14

TUNING

VHF TUNER (HEAD-END), RJX-062

1--13j448 A

1.135 0120

800

RI 14 .2K

UNLESS OTHERWISE NOTED

CAPACJTORS MORE THAN I. MMF C.APACITORS LESS THAN I. MF RESISTORS ARE 1/2 WATT K .1000 M • 1,000,000

SWITCHES VIEWED FROM FRONT OF TUNER, TUBES FACING DOWNWARD. SWITCH SHOWN IN CHANNEL KA 13 POSITION

1

84

1

1 1

:Er 2- LL S I

TUBE AND TRIMMER LOCATION

TUSO LAYOUT SOTTOm VIES

I.•••

VHF TUNER RJX-059-062-"H" LINE

TELEVISION RECEIVERS

Some early production tuners utilized only four

leads for power cccccc tion to the main chassis.

Late production tuners have five leads instead.

To reploc• a four lead tuner with a five lead

tuner, a slight change in wiring is necessary.

Originally, the orange lead of the four wire tuner

was connected to the ¡unction of R228 and C214

(plus 175 volts). When installing the five lead

version, connect the oronge,white lead to the

junction of R228 and C214. Then, connect the

plain orange lead to the opposite end of R228 to

obtain the necessary plus 135 volts.

R228 (3000 ohms) is located on the front terminal

board, near the IF shield. In receivers incorp-

orating the four lead version, o dropping resistor

for plus 135 volts was included in the tuner itself.

Even those receivers had R228physically mounted

os described above, but unwired.

FOR VHF TUNER R..IX-062 SEE PAGE 84. FOR UHF TUNER RUX-001 SEE PAGE 82. FOR UHF TUNERS RUX-006/007 AND 003, SEE PAGE 103.

OUTPUT CIRCUIT

— Tin7E-a—i;i0.7.(7-v) — —1 v1o3

L__

6C136 RJX- 059 OR RJX-062 1ST 14

BROWN ; AIAGE FIL +135v

WHITE

AG'

TÚTWWUF OPT

+175V IN VHF +135v IN UHF

I-F OUTPUT

`;'3, C'

F L B+ TOUHE TO 1130V VHF UHF (135v UNE POS)

VI 17C 6T8

DELAYED AGC

6— C213 Igleo it 30V

1 - «S T C215 1800 R226

10M

•CuSTANT STRONG\ 9200

+240V

OSCCPE SYNCED AT 1/2 VERT FREQUENCY DE SCOPE SYNCED AT 1/2 FIORE. FREQUENCY

WAVE 9IAPES TAKEN WITH IERMAL CONDE& SETTINGS B PORMAL SIGNAL APPLED

VIETAGE MEASUREMENTS ARE IN RESPECT TO CHASSE EMU 20,000E1/VOLT METER, WEDI CONTROLS SET FOR NORMAL OPERAT1311, NO SIGNAL APPLIED

A MEASURED WITH VTVM

• VARIES WITH CONTRAST CONTROL

T401 Rip

BLACK/REO

F401

9401

110Vt

BLACKAIL

lO

BLACK

11401 103K

1402 2W

117v-6011

BLUE

RED/ YELLOW

VELLO

V I 19 5u•G REC T

O

DISTANT

VI 20 5u4G RE T

0220 3.9m

RI51

TEST

• POINT

AREA CONT

STRONG

-A-

R221 2M

+240V

0402 8300

VON

680 c4063. AUDIO BI-2W 1_ 30,0

350v

180V

6,6, 800

2.2K C174

- 800 y

+135V 0152 R154

—'2‘."ir-1 6162

10171 61 0151 BOO TENT 40 105

PIS

V104 64E16 2ND I-F

0156

0155 56

0155 6.8K 2W

V1068 U2 12AT7

SYNC CLIPPER

TEST POINT

0224 C4q 3

ION -2.5V 2

C404 Our

+1 3 5V

+13 5V HE El+

+175V H E B+

+24 OV

+ 250V

I 5H

C4014 55n 90MF 350V

C402Adm 1 .40ME

350V

1-260V

4 v116 9 v106 2 V118 9 V112 ° V110 e vu4

12 V108 4 v117 2

BLACK

UNLESS OTHERWISE NOTED CAPACITORS e.ca( THAN I • MME CAPACITORS LESS THAN I•MF RESISTORS ARE I/2 T X •I000 M. 1,000,000

V113

678 roeoe 7

C212

.0033

+135V

VI 108 1/2 12/1u7 ASE DE T

/ R264

I am .= HORZ HOLD R259 'VVVS.

e33 S. y.

R276 2.2M

10K

VI09 1/2 6U8

AUDIO 1-F AMP

AX4

C301 5003

nay

66V

C255 .0012 I

TEST IX POINT

1T301 4 5M4 C304

• Mt 4

47K R304

6R303 E., 2.26

+135V

0157 6.0K 2W

V116 6A1.16

LIMITER

*OK

V105 6006 3RD IF

5

- C160 C163 330 BOO

Reir

T 302

2.2K c2,70

C166

VII1A 1E2 6E017 VERT OSO.

C204 R205 150K

vERT. HOLD

12AT7 1100 M V.

R310 220

C306 120

262 12K IW

Lev'

157

VIO 6A 1/2 1SAT? SYNC AMP

LI54

drpEogi +260V

11208 100A

C207

.022

1/2 6T8 RATIO OCT

R311

2K

0209 2.2M

4311

T -004

kiSETT 2 _ X

C308

FCIROCIeLNY:: 120

0317_1,R315 1.316

+240V

:7 02230110 • 23)544

+2 5 OV

C205

04010 *OW 75v

R211 2K

21126 21121 21C240 21C241

V109A 1/2 6U8

NOISE CANCL. L161

245V 21541 7201

VERT LIN

VITYL 6806

MOR OUT

C3I2

10K PAW'

R309 1.5M

R320 54011

GREEN

10t1

R212

•-•1111P-• 6806

R168

v-120V

V107 6CL6 4 5MC TRAP

VIDEO AMP •EI L158 „ •

6

9

220K R182

YOKE COPAS 2

22 R219 22K

_m g:ZS

VI 178 1/4 6T8

AUDIO AMP

yawn

BROWN

P201 O WHITE

lO

R272 6.116 2W

3E1

R189 I8K 2W

0210 2200

11/17 31.?

GREEN 7

/1 V WHITE

70 *50-142V

"Fi" LINE

PICTURE I I TUBE

2IZP4•8

P.9f1V

RI75 100K BRIGHTNESS

VERT& HORZ YOKE

0201 a 0251 I

5

0+ BOOST

VI 15 1113 v RECT

6AX4 DAMPER 260 F261

5 SWAMP

L 3 HORZ LIN

VII 8

AU6001e 60211f.V6

7 470,1W 1R318 220,IW CONSOLE 051_1'1

10268

1 000

1r - +260V

0266 .047 -r R274 • ee

FLUE

16267

;AI 1000V

IW - 84J 236

I6KV

W -84J266

21130 21131 21C350 21C351 21C348 21C349 ELECTROLYTIC CONDENSERS

REF. NO DESCRIPTION PART NO. AEROVOX MO.

C321

C309

C401A C40 1B

C40IC C40ID

C402A

C402B

C402C

C402D

25 rnf, 25V.

10 mf, 50V.

110 mf, 350V.

30 mf, 350V.

5 mf, 350V. 100 mf, 75V.

40 mf, 350V.

40 Alf, 350V.

30 mf, 350V.

10 Alf, 25V.

RCE-086

RCE-170

RCE-199

RCE-I99

RCE-199

RCE - 199

RCE-201 RCE-20I

RCE- ZO I

RCE-20 I

CONTROLS


Volume 750K ohm•

Brightness 2 rnegohrn•

Contrast 500E ohms Hoe Hold 100K ohms

Hor, Size Vert. Hold I5K ohms Vert. Size 4 megohrn

Vert. Lin. 2K ohms

Tone, 1 rnegohm

100K ohms, AGC

WIRE WOUNDS

4,000 ohm., 10 watts R404

4.700 ohms, 10 watts.

120 ohms, 5 watts

5,000 ohm., 10 watts

R178

R.210

R210

R266

R271

,R220

R2I8

13.318

R180

RI72

R273

R270

10272

RRC-286

RAC-283

EEC-286

RRC-247

EEC-283

EEC-281

EEC-291

EEC-292

EEC-293

RRW-053

RRW-091

RRW- 103

RRW-106

COILS


LI52

L155

LI57

1.254

LI59

LI60 LI62

L164

LI65

1251

1252

1253

L301

L401

L402

1st video IF

Choke-220 uh

Choke-I0 oh.

Choke-10uh. 68 oh comp choke.

Choke-Z.2 uh.

Choke-68 oh.

Choke-31 oh.

180 oh choke-wound

over 22K ohm• RI96

Horiz o•cillator

H.q. •ize.

Horiz linearity

Audio IF Power supply filter ck.

Choke, 1.4 uh

R LI-192

RLI-197

RLI-138

R LI-138

RLI-260

R LI-122

RLI-295

RLF-024

RLI-310

RLD-091

RLD-065

RLD-060

RLI-243

ELF -069 RLI-142

TRANSFORMERS

DESCRIPTION REF. NO, PART NO. ST ANCOR.NO.

Vert Output Mor . Output

Power60 cyc le•.

Audio Output

Audio IF. Audio ratio del.

'1st video IF.

2nd video IF.

3rd video IF. Vert blocking one.

T201

T25I

T401

T303

T301

T302

T151

TISZ

T153 T202

RTO-155

RTO-151

RTP-322

RTO-140

R LI-280

ETD-015

RTL-I44

RTL-I44

RTL-I54

RTL-I65

MISCELLANEOUS


Yoke

Cry•tal diode.

Spk-6 1/2" PM (2 IT 30-T 31).

Sok-10"PM(21C350 -P'. 1).

RLD-059

RED-00i

S-650D-7

S-12120-7

VHF ANT

1100

— C100

TO UHF OUTPUT TIO1

4-135V TO uHF°

1- *C121ii 50°1 -*

6.3vAC0 G_12_2 To uHF..'my)

* USED ON SOME SETS. SETS NOT USING FEED THRU CAPACITORS MUST HAVE EXTERNAL CAPACITORS

L101

—4' non 3--C116

LO2 0-is

1.103 C.4.4

CX.3 .1) • 1104

• e •

REARee5 -L-

FRONT

121

L107

FRONT/e5 •471

V? 2

O

Li 6 REAR #4

47K

CI

800

ROI 22K

+175v AGC (WHITE - (WHITE) ORANGE)

V101 6807A R-F

L108 000 ,-

R102 /19 100

Clu4 800

ViOi V102 68076 6X8

V 6.3VAC BROWN )

5

—C106 _ 1 800

R104 4 70K

REAR 4*3

+250v (RED)

+ 135V OR

L II Co 3 LII Co 2

V102A 1/2 6X8 OSC.

RI06 6, 47K

C112

LI CO. LI26 0.• 3 LI27 c(iz

REAR e-e2

VI028 1/2 6X8 CONS

10 9L130 ISK

MIXER TEST

(31 RBI RO/NT

041 SOK

ISO LIC A L13ILII7C 05

COI 47 111-BAND COUPLING STRAP

mî(e2 LI20 CH

C113

22

_.C1 141_

TUNING

FRONT #1 RII5 I.5K

SCHEMATIC DIAGRAM FOR VHF TUNER (HEAD-END)

Pig

NOT USED IN ARLT TUNERS

F20)4

REAR.I

EARLY TUNE

6 8K

LI35 *E3 CA 20 TO I-F

800 =

134

116 100K RI12,47K)

t -ow 448

RII4 I.2K

EARLY TUNERS


CARR:MRS MOINE THAN 1. MMF CAPACITORS LESS THAN!. MF RESISTORS ARE 1/2 WATT •I000 la•1,000,000

SWITCHES VIEWED FROM FRO.« OF TUNER, TUBES FACING DOWNWARD. SWITCH SHOWN IN CHANNEL IS POSITION

NOTE: EARLY VERSION DID NOT USE 8115 Et 1.133 BUT iia.0 R108 PARALLELED ACROSS LI32 WHICH WAS CONNECTED TO CUE.

Q

TURK LAYOUT TOP VIEW

TUBE LAYOUT BOTTOM VIE

In late production R253 in grid Section of

V107A has been changed from 1 Meg to

2.2 Meg. This changes the sync clipping

level and results in improved interlace.

86

21130 21131 21C350 21C351 21C348 21C349 FOR VHF TUNER SEE PAGE 86.

FOR UHF TUNER RUX-001 SEE PAGE 82.

FOR UHF TUNER RUX-006/007 SEE PAGE 105.

r VHF TUNER RJX -T)J2 -1T-FP-viiVri

OUTPUT CIRCUIT L135

L _

BWN ORANGE FIL. 8. 4.15V

CI60 5 II1LI6I 120 1h39.25

1.4C

Cie L152

8151

-

(I35V UHF POSI I15 (80V VHF POS.), G162

+ TO uriF 33

TO UHF ® I OUTPUT

,..-.., I Mr/

FILTO UHL! - c - - -

RED

ORANGE/ WHITE 7S V

.-7.C187 v119-C _LE100

= 800 CE1cyrrAGC AGC WHITE

-C18.3 C181 1 80

.7

ON

OFF _1_

R-F AMP SI5° SWITCH

RED +240v

0 V

* *

18

C181 47

IF AGC

Vi03 6C86 1ST IF

5 170V

V104 6C66 2ND IF i86,

ilW4 330

-.- 2 I - C169 V IV

R153 •--L-I ..,‘ C*2 56 24 RI59 820 C155 .-- 820 820

(

166 „Bo 800

68

47.25 L151 471(.1W 000 6800 RR' *--1 MC TRAP R193 1W ,39x

‘C.,63- 12.1eV/ -LC185 _ 800 5000 _

8152 R154 C157 - wee goo 1 2200 if * -=

8189

800v '5°K

TEST POINT

• en

8190

39.‘0K

IC180 CI78 800 .0021

8191 >5.1m

+260V

* SCOPE SYNCED AT 1/2 VERT. FREQUENCY. **SCOPE SYNCED AT 1/2 HORIZ. FREQUENCY.

WAVE SHAPES TAKEN WITH NORMAL CONTROL SETTINGS 8 NORMAL SIGNAL APPLIED.

VOLTAGE MEASUREMENTS ARE IN RESPECT To CHASSIS WITH A 20,000.11 VOLTMETER. WITH CONTROLS SET FOR NORMAL OPERATION. NO SIGNAL APPLIED.

à MEASURED WITH vTvM

0 VARIES WITH CONTRAST CONTROL.

117V -600/

VI 21 V122 5tHG 5U4G RECT RECT

T401 250V Ac

RI86 33K

800

*TEST POINT

v113-8

1/2 6U8 1/2 12A77 SYNC CLIP II5V VW-A KEYER

A -1.5V je,T7 I/2 12AU7 SYNC PHASE SPLIT

65V

•••• _ ‘270V

‘ \I iir-R22-20: :202006 RZ(7) -1 G 0C02°67 A /......6 C252 C427503 ...if.- R256 -:::.__13) / .02 2 ( -7V.c i

\ R254 ... 33K -65V

/ RI85 / 1

R2457301( R255 .... 1C203 -.- --- C2°5 t , 1001( 3 jEiv I .005 T C204 .003 I 950 20: R2013 1 .005 CN 8 RED

IM 47K L J1 n1800 R211 2.2m ,.,i2pr -..-...-.00C17,mr7 :8209

YELLOW , 8184 e + 26 oVv 204 +21r6OV 22K y

_ +260V _ i1.3r4

h R210 ** aLue _÷.._ vHIEO5R:TD - T. 27V *

.7_. -, ç8205. 68825K 7

160V

C158 CI71

8157 6800

V105 6C86 3R0 IF 1,m 5

CI86

1T815030 1151 LI57 L164 , C164 L155

11 5 2204W: C167 C175 .15 5 - 1(

8162 3300

V106-A 1/2 12AT7 SYNC AMP

RI61-2 5v 2/ •,/ ̀or

10K

R163

R180 100K

AGC CONT

(180v

-CI79 105

8404

4000

8188

330K

I22V RI87 2

4711

>HE+ I35V

/1402 3000 IW

>HE +175v

3 +240v

I W • ec,028 84.7 T oke-1800.2w

R405 4 -

+250V 1800 I. 2w • G40,8

ISOMF 350v

L401 1.511

.. • r402A - C4018 140MF IHOMF

350v .. 350v

+ 260V

VIII V103 V104 Vi05 V110 6BX7 6C6 6036 6036 I2Au7 ST

5119 v107 V112 vI16 v118 VI09 12807 68X4 6AU6 FIX 618 12AT7

8001 Boo 8001}

040E14 C403 L40i2 9

4

1.4 y h

3 3 41.5 7

91 2

V106 v120 vI08 12/177 6V6GT 1281 7

4

V117 V114 V113

7

4 12

L30

C319 - 608 6CD6G 6U8 BOO


CAFACOORS mORE THAN i• 1.114F CAPACITORS LESS THAN I•MF RESISTORS ARE 1/2 WATT K•1000 M• 1.000.000

C259 C262

8264 100

68K T

8266 100K

V +240V HoR HOLD

V118 IX 6806 • Limi TER

TEST R305 POINT 100K L2.5V 24"

5

v107- 13 1/2 12AT7

MDR PHASE MT

C256 1000

N

8259

A . 8260 L257 swe 120K

/ 560If T.02

24V - R278 9.-1272

I C273 _r_ T47° 6800

1200 .1 +260V

* *

r"\f210v

1 la 678 VI I9-A

T

RATIO DET

8262_2.

1M

26 33K

V112-A 1,212Au7

NOR REACT 8261 vs.,mvv. 220K

'RI65

vii0-13 1/2 I2AU7

VERT BLOCK 05C.

6208

'047 ' R2I4

8219 6800:1

HEIGHT

70V

I v112 -13 V II3-A V2 12807 112 608 HCR OSC. HOR DISCHARGE

vI17-13 1/2 608

AUDIO 1-F AMP

235V

- -

[TRANS 4.514C

I47V r

T301

830 I 8302 68

R321

10011

r-I RATIO DET

1302

1 .1

a

„l'i3C.6 .._. 1.. _ _ _ 701(

+240V

C276 820

8279 6800

VI I 7-A 1/2 608

NOISE CANC

I6V%

22V

180K 22K

8212 470 2w

LI62 4-'540

68 1 k• CI66

V108 12817

VIDEO AMP

8167 120K

.05

R182-5V 2

"J" LINE

LI56 45PACTRAP L165

01P-• -,31311%, 160V 180 ph

C165 8186 *- 7 u

-68 22K 3.9

8 --I-155/

• --t-

.2.2e

8178 750

%VC 18171

350V ''18K 2W

RI 72 4000 ON,

GREEN WHITE NV

6

GREEN

YOKE CONN.

.1201

R2I8 • • 8221 8282 c : 240K 2K -c402C

3°1‘ 3300 350V P.• VERT LIN R27I

151( 2W +260‘r BRIGHTNESS

330 t

8268 -32Y IM

8270 120

C402DT 4. 1014F 25v

8281 3011

8285 I5K 2W

eR283 100K

* *

1 VI 1943 1/4 6T8

AUDIO AMP

911 C312

470 nos I

TEST

120

16.5v

Id 3s I

I

gr NNW. IC311

e 12340.3 5000 7 22K C308 - C309

25V

101AF T.°1

1 001 .1:0022 - C320

R31: l R_e :A31.271 4 -94

.008

33K

V332(22/30K

22 9 57V

1:1 310

220

R307 eea• 27K C507

'5000

+260v

-6.5V \

P 01

WHITE

C269 - ;5 180

4311

e

TPUT PIT

CI70 .45V Il

j j

42v

V109 21ACP4A

PICTURE TUBE

L159 681,11

175 RI76 33K 9100 2. 2W

. 0 CÎ77).Z

1

VERT & HORZ YOKE

8216 2200 0201

200.

v106-13 1/2 12817 BLANKING

240V

-1I2V 8289 8287 I 300 33K 7 %We

R288 100K

F251. FUSE 3/8 AMP

5 -1.-C268 I5000

V116 1253 6A X4

DAMPER 48114 HORZ LIN 8274

V

+260V

0267 .01

VII5 183GT

Hy RECT

L254

101,1,

8272 5000 IOW

C265 2.70

6v6GT AUDIO CUT

00V BLUE

1

BALUN

C6 1.2-3.3

RESISTORS ARE 1/2 WATT, K• 1000.

CAPACITY IN MMF. Le • SHORT PE10E OF WIRE

TO BE DRESSED FOR PROPER TRACKING.

c. g - • - - S

MISCELLANEOUS

REF. NO,

DESCRIPTION

PART NO.

..: g = c . ... as ., , 0. • 0 « .(5• ;1 • 7'

ÎF'g° ° •g> f•E' F.

.8 4'

á

° R Z

g X

L150

47.25 mc trap coil

RLI-246

1,151,2 lot a

nd 2nd video IF

grid

RLI-192

LI53

Coil. 31

mic.

RLF-024

L155,252 Choke coil,

10 mic.

RLI-138

LI72

Choke, 180

mic.

RLI-311

LI73

Choke coil,

330 mic.

RU-194

L250

Hor

stabilizer cod

RU-247

L251

Width

RLD-066

L400

Filter choke

RLF-068

TRANSFORMERS

,,

3. 3 ohms, I/2w. w. o.

4K ohms, 5w, w. w.

Volume, 600 ohms

Brightness, 100K ohma

Contrast

500K ohms

Vert. Hold, 250K ohms

Vert. Lin.. 3K ohms

Height, 3 meg.

WIREWOUND & SPECIALS

CONTROLS

DESCRIPTION

REF. NO.

PART NO.

.4..•••••,..t....

o n co > L.


1

VIIF tuner

Yoke

UHF tuner

Crystal Mode

Switch - Local - Distant

Speaker, 4" PM. 3 2 ohm

'5

ti

5 mid., 475V

5 mid.. 50V

60 mid., 350V

80 mid., 350V

40 mid.. 350V

20 mfd., 150V

-Is z.

T200

RT0-162

T250

RTO-161

T400

RTP-325

T301

RTO-153

T151 RTL-155

TI52

RTL-154

T300

RTD-018

T153

RU-312

RLI-057

.2 Ir. O

g

RCE-205

RCE-174

RCE-204

RCE-204

RCE-204

RCE-204

PART NO.

PART HO.

, o> te 0 .-• ,-• -a --a

F.IX-066

RLD-052

RUX-008

RED-001

RSW-108

RRC-302

RRC-303

RRC-302

RRC-304

RRC-305

RRC-301

RRW-105

RRW-I24

6AF4 OSC.

II C Le 2 6

TEST POINTS

SCHEMATIC DIAGRAM FOR UHF TUNER, RUX-008

IC12 L5 _11.000

-r RESISTOR MOUNTED

I CI3 AT TOP OF L 4 1000 FIL.VHF TUNER

22K 2W

M-78J803

TO B+ 275V

101

— C100

TO UNF OUTPUT T1OI

+275V TO UHF

6.3VAC o TO UHF

REAR#5

_J •-1-.C102

t REAR 00.4 Ch5

_102

103

FRONT • #4 •

C121

1.1000

Cla2

1000

• •

v7

+275V AGC (WHITE- (WHITE) ORANGE)

VIOl BBO7A R-F

/36 V 0 220v

2 /34V Cr

Fao3 1420K

(36V ;

V101 V102 6B07t 13X21

11 6.3VAC (BROWN)

+ 240V (RED)

, ABLE

+130V (ORANGE)

REAR #3

L 11 caL3 LI1

V102A 1/2 6X21 OSC.

0112

LI B 44MC

, FRONT ots

REAR ee2

FRONT 4e2

c"Llso

150 L117A L.117C C115

I-BAND RUNG STRAP

mîi&Î 2

1.120 CH/

TUNING

FRONT #1 R115 '500

SCHEMATIC DIAGRAM FOR VHF TUNER (HEAD-END)

• I.6V

V1026 (/2 6X8 CONK

//O V

peA7 am POINT 150K

REAR 01

8 110V

T II

L135 0120

*TAOMP-F BOO

R114 1200

UNLESS OTHERWISE NOTE

GAMOTCRS MORE THAN 1. MMF CAPACITCRS LESS THAN I. MF RESISTORS ARE 1/2 WATT K • eoo m-i.000,000

SWITCHES VIEWED FROM FRONT OF TUNER. TUBES FACING DOPKARARD.. SWITCH SHOWN IN CHANNEL APIS POSITION VOLTAGES MEASURED WITH

20000 OHM/ VOLT METER. NO SIGNAL APPLIED.

AIND1CATES VOLTAGES TAKEN WITH VTVM.

POSITION I 2 OF LOCA 1-DesTAII T SW I TCH

wassa

MO MIMI UM NMI MIMI OMB Inn IMO 111111111 OM Mil 11111111 BIM 1111111111 Inn MI NMI IMO BIM 4111111

11114 11116 21111 21118

1 TUBE LAYOUT TOP VIEW

UHF


SOLDERLESS CONNECTION, "K" SERIES

A few connections on sorne of the controls on the " K"

series ore mode by means of a solderless wrap around pro-

cess. We advise you of this so that you will realize that

this is done deliberately and not an oversight on the port of

the operator.

This type of connection was us•d quite extensively during

the war on Army and Navy equipment and has proven to be

thoroughly satisfactory. Our own Engineering Deportment in

Syracuse has thoroughly tested this connection under all

connections of humidity and also found it to be satisfactory.

VHF TUNER RAX-066

ourpuT CIRCUIT

1.130

• 8164

• ;,(ov„ ELI,TFO

FROM I UHF TuNER ®Fun›..30

BROWN ORANGE RED ORANGE- WHITE FIL t130V +240v voi1 E AGO

6.3 vAC +275v

VII4 6026

AUDIO I F

275V

I25V

1401

Ur 1402

117v H-.60

0300 800

0151 ,2

L150 47.25

MC TRAP

TES) POINT e

AGC

TO VHF 4 TUNER

TEST 3E POINT

VII 5A

112 6TH RATIO DET

,r — R703

1.151

22K .01 1.275V vii5B

, , 112 6113 VBAHO65 -/--.00300,5 I C003046 AUDIO AYR

47 275Ve Ltit " 01

AUDIO OUTPUT

RS

CA

- 35Ve- .0.c301: ;r, .0047 309

V103 6C86

1ST VIDEO I F

4V

8151 56

CVARr301.3eTSEH TTeL OEIN ING

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15C1.100 (COLOR MODEL) COLOR TV RECEIVER MODEL 15CL100

FIRST & SECOND PRODUCTION

The General Electric reodel 15CL100 is a twelve channel

console color television receiver. Some ISCL100 receivers

hove been factory equipped with o UHF tuner unit which

provides additional coverage from channel No. 14 through

No. 83 by means of double conversion.

This instrument will reproduce monochrome or color pro-

grams and automatically shift its function from one to the

other by means of an incorporated "color killer" circuit.

The model 15CL100 incorporates 36 tubes, 4 high voltage

rectifiers, 2 selenium power rectifiers, 2 crystal diodes

and a 3.58 Inc piexo-electric crystal. Receivers incorporat-

nig UHF contain 2 more tubes and one additional crystal

d iode.

Among the features to be found In this receiver are keyed

AGC, highly stabilized horizontal AFC, horizontal once

vertical retrace blanking, on automatic "color killer", DC

restoration, a three tube high efficiency high voltage

doubler and a high voltage regulator tube ond circuit. This

receiver utilizes on aluminized planar type tricolor picture

tube.

The following data includes installation Instructions, pre-

liminary service data including the required schematic

diagrams, a receiver analysis based upon on accompanying

block diagrams and a preliminary ports list containing the

most essential items required for service.

Second production receivers differ somewhat from first

production receivers insofar as the schematic diagram and

component layout are concerned.

SPECIFICATIONS

POWER INPUT RATING:

Frequency - 60 cycles.

Voltage - 115 volts.

Wattage - 425 watts.

RF FREQUENCY RANGE (VHF):

Channels - No. 2 through No. 13.

Frequencies - 54-88 mc, 174-216 enc.

RECEIVERS EQUIPPED WITH UHF:

Channels - 14 thru 83,470-890 mc

This coverage Is in addition to above noted UHF channels.

OPERATIONAL FREQUENCIES:

Picture IF carrier - 45.75 enc.

Adjacent channel audio trop - 47.25 enc.

Adjacent channel video trap - 38.00 mc.

Sound IF carrier - 41.25 mc.

Intercarrier sound take-off - 4.50 mc.

Chrominance IF carrier - 42 17 mc.

Chrominance signal take-off - 3.58 mc

AUDIO POWER OUTPUT:

Undistorted - 2.5 watts.

Maximum - 5.0 watts

LOUDSPEAKER:

Type • Alnico PM.

Cone Diameter - 10 inches.

Impedance at 400 cycles - 3.2 ohms.

PICTURE TUBE:

Type - 15GP22. Size-15 inches, round.

Deflection - electro -magnetic

Deflection angle - 45 degrees

Focus - electro-static.

DANGER

The high voltages generated in these receivers are capable

of delivering A LETHAL SHOCK! Extreme care should be

excerised to ovoid contact with high-voltage carrying

leads or the final anode of the picture tube while the

receiver is in operation. Under no conditions should make.

shift picture tube connections be made which will defeat

the purpose of the receiver :s protective insulating devices

thereby subjecting service personnel to dangerous shock

hazard.

Also note: Mild x-rays are emitted by the Z-2188 high

voltage regulator. Because of this and the dangerous shock

hazard, never operate the receiver with the high-voltage

compartment cover removed.

The picture tube is highly evacuated and if broken, glass

fragments will be violently expelled. When handling the

picture tube always wear goggles.

GENERAL

The following procedure concerns the adjustment of those

items which may, upon arrival of the rec•iver, require re-

adjustment due to transportation handling etc. Fundament-

ally, these controls ore adjusted in such a manner as to

provide good monochrome picture reproduction. Once these

controls have been adjusted for good monochrome reception,

good color reproduction will be hod, provided that the in-

ternal (top of chassis) adjustments have not been tampered

with.

The following doto describes the functions of the various

controls and is tabulated in a sequence which should be

followed in the event that a complete sat-up procedure is

required. Refer to figures I, 2 ond 3. The following ad-

justments should be mod• after the room has been darkened.

INSTALLATION

The receiver is shopped with the tri -color picture tube in-

stalled and with all controls pre-adjusted for normal op-

eration. If upon installation of the receiver, it is determined

that certain control or picture tube adjustments are nec-

essary, refer to the following procedures. The required

adjustments ore somewhat more complex than those pre-

viously encountered on monochrome receivers. Hence, only

qualified technical service personnel should attempt these

adjustments.

EXTERNAL ANTENNA SYSTEMS

In general, existing monochrome antenna systems may be

found satisfactory for good color program reception. It

should be borne in mind however, that it is possible for a

poorly installed or adjusted antenna system to provide

poor color reception - particularly those systems which

display o sharp frequency cut-off characteristic within the

frequency limits of a locally active television channel. In

all cases, the antenna system should be favorably located

and checked for proper orientation and termination.

EQUIPMENT REQUIRED

The only piece of equipment necessary to perform the in-

stallation adjustments, aside from the usual installation

tools, is o dot generator. The dot generator should supply

"white" dots (negative video modulation of a VHF channel

carrier). The diameter of the dots should not exceed the

approximate width of 2 or 3 scanning lines. Other dot gen-

erators also may be used which supply white "squares" or

"rectangles", the edges of which are sharp or well defined.

Do not attempt the following procedure with dot generators

of the "block dot" variety.

COLOR PURITY

These adjustments are required to assure that the electron

beams of each picture tube gun will strike only their re-

spective color phosphor dots throughout the entire screen

ar•o.

I. Set following controls fully counter-clock-wise: picture

contrast, chromo, brightness, blue and green GI controls,

green and blue gain controls, red, green and blue 02 con-

trols, purity. DC convergence and field neutralizing control.

2. Apply power to receiver, antenna need not be connected.

3. Advance red G2 control and brightness control until

screen is Illuminated.

4. Loosen securing screw in neck shield assembly and

rotate assembly so that blue beam positioning magnet lies

directly over blue (top) gun in picture tube. Unscrew all

three beam positioning magnets just short of the point at

which they fall out of assembly.

5. Put on a pair of high quality high-voltage insulating

gloves to prevent possible shock from yoke wiring. Loosen

top and bottom yoke adjustment wing screws and slid• yoke

back an.d forth to obtain purest red field in center of roster.

Tighten wing screws.

6. Adjust purity control (front chassis apron) for purest red

field In center of raster. Simultaneously rotates purity coil

(independently of neck shield) for purest red field in center

of raster.

7. Adjust field neutralizing control (front panel) for uniform

red field at edges of the raster.

8. If the entire raster is not pure red, loosen the top and

bottom yoke adjustment wing screws and slightly tilt the

yoke either forward or backward ae required. Do not attempt

to tilt yoke from side to side.

9. Check purity on blue and green fields separately. This is

done by rotating the red G2 control fully counter-clockwise

and turning up either the green or blueG2 control to produce

a green or blue roster. When •o doing, the red, green and

blue fl•Ids should each kte pure to within % inch from the

raster edges.

RASTER ADJUSTMENTS

These adjustments are performed to shape and frame the

picture in a manner semi'an to monochrome practice.

1. Connect antenna and tune receiver to suitable test pat-

tern. Leave the blue and green GI controls fully counter-

clockwise, but set the red, green and blue G2 Controls at

approximately mid-position.

2. Adjust the brightness and contrast controls for normal

picture. (Disregard any color effects in the raster).

3. Adjust the horizontal drive control just below the point

at which a bright vertical line appeals on the raster.

4. Adjust the vertical size and linearity and the width and

hori•ontal linearity controls for a linear raster which ex-

tends beyond the mask limits approximately 1 13 inch on all

edges.

BEAM POSITIONING MAGNETS

This adjustment is required to axially orient the individual

electron guns in the picture tube so that they may be made

to converge in the center of the screen.

1. Turn receiver off. Turn brightness control fully counter-

clockwise. Connect "white" dot or generator signal into

antenna terminals of receiver. Make the necessary contrast

and brightness control adjustments With all three (red,

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FIG. 1. FRONT PANEL ADJUSTMENTS

green, and blue 02) controls turned up about half way set

the brightness control to provide for low brightness dots.

Turn the DC (static) convergence control located on tLe

rear of the receiver counter-clockwise just enough so that

the beams under-converge and hence form many groups of

three separate dots each; that is, one red, one green and

one blue dot in each group. Set the 02 controls for equal

brightness of the dots and the brightness control for just

sufficient visibility to permit adjustment.

2. The DC convergence control should be adjusted so that

a displacement of approxemately 1/4 " exists between dot

centers Focus the dots with the focus control.

3. Starting with the three beam positioning magnets in

their maximum outward position, screw each of them in, o

little at a time, and note their effect upon the dot structure

in one of the dot groups in the center of the raster. These

magnets should each be screwed in just enough to form an

equilateral triangle of dots in any center raster group-or

triad as shown in figure 3. If this cannot easily be achieved,

the entire neck shield assembly may be rotated 15

degrees either side of the position et which the magnets

lie directly over their respective guns. Do not rotate any-

more than 15 degrees in either direction. NOTE: The

magnets should not be screwed in toward the tube guns

any closer thon obsolutely necessary, since their magnetic

influence tends to defocus the electron beams.

R627 0625 R6I4 R6013 GREEN

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CHANNEL SELECTOR

FINE TUNING

4. Adjust the DC convergence control until the three colored

dots of the center - raster groups superimpose. Refocus the

dots as the DC convergence control is adjusted. The end

result should be one white dot instead of colored groups in

the center of the screen. Disregard the fact, at this time,

that the dot groups at the outer extremities of the raster

are not properly converged.

DYNAMIC CONVERGENCE

These adjustments are necessary to create a perfectly

converge condition throughout the entire screen area. These

adjustments control the amplitude and phase or position of

the dynamic convergence modulating voltages - both verti-

cally and hotirontally. This procedure also requires the

use of a generator which supplies moderotely small dots.

1. With the above noted dot generator signal fed into the

receiver, proceed with the adjustments following. Adjust

the contrast, brightness, and/or individual G2 controls •o

that all three colors in the pattern are visible at the raster

edges.

2. If DC convergence is set correctly center - raster dots

will be converged. Now proceed to converge the dots

throughout raster area. The horizontal phasing control L451

should be adjusted so that the two end points or triads

along the center horizontal line converge at the same time

when the DC convergence control 6629 is rotated.

3. Adjust the horizontal dynamic convergence amplitude

control R62:2 so that all points along the horizontal axis

squally misconverge. Readjust the DC conv•rgence control

R629, so that the horizontal lives converg• throughout

their entirety. If proper amplitude and phasing has been

accomplished, all points along the horizontal axis will

converge at the same setting of the DC convergence control.

4. With the vertical dynamic convergence amplitude control

turned up about half may, odjust the vierticel dynamic con-

vergence phasing control R623 so that all points from the

canter of the raster on tbe vertical axis converge simul-

taneously when the DC convetg•nc• control 6629 is varied.

5. Adjust the vertical dynamic concergenc• amplitude

until all points along the vertical axis ore equally mis.

converged.

NOTE: The vertical amplitude and vertical phasing controls

are Interacting and some readjustment of the phasing con-

trol may be required when the amplitude is varied.

6. Converge the dots vertically with the DC convergence

control.

NOTE: The vertical and horixontol convergence adjustments

are interacting. After St•p 4 above has been completed. It

may be necessary to readjust the horizontal ornplitudis

control, R622.

GREY SCALE ADJUSTMENTS

These odjustment• are required to produce on untinted

(white) raster and picture throughout the useful brightness

and contrast range.

1. Blue and green gain controls (on rear of chassis) should

be set fully counter-clock-wise

2. Tune in o monochrome test pattern then set the contrast

control fully counter-clock-wise.

3. Turn the brightness control fully clockwise.

4. Adjust the red, green, and blue G2 controls for o very

low brightness untinted grey raster

S. Turn up the contrast control for o normal picture.

6. Adjust the blue and green gain controls, (rear of chassis)

to produce white picture highlights.

7. Adjust the brightness control for a low brightness pic-

8. Adjust the blue and green Cl controls for o grey untinted

picture.

9. Check to see that untinted (only white or grey) high-

lights may be had throughout the useful range of the contrast

and brightness controls.

RECEIVER GENERAL DESCRIPTION

The color television receiver contains many circuits which

are similar to those used in contemporary monochrome res.

ceivers. Additionally, the color receiver employs other

circuitry necessary to decipher and reconstruct the or-

iginal color information and to reFroduce this information in

terms of the Red, Green & Blue additive colorimetry on the

face of a tri -color picture tube.

The receiver is shown in block form in figure 5. The RF

amplifiers, convertae and oscillator are all contained in a

sub-assembly unit which bears great similarity to the RF

tuner unit of present General Electric monochrome receivers.

This units, however, essentially differs from the mono-ch-

rome unit in so far as the bandwidth and "tilt" limits are

far more stringent than in monochrome practice since the

higher ftequency color sid•bands must be preserved.

15C1.100 (COLOR MODEL)

1

TUBE MID BOARD

FIELD NEUTRALIZING COIL PLUG

ell-HIGH VOLTAGE INSULATOR

TUBE SHIELD

YOKE PLUG YOKE SUPPORT GRND. LEAD BRACKET

YOKE ADJ. SCREWS

YOKE ADJ SCREW

TUBE MOUNT PURITY COIL RODS TUBE PLUG

HOLDER

ANODE CONNECTOR

FIELD NEUT. COIL TBIJ 470

FIG. 4. PICTURE TUBE 8. YOKE ADJUSTMENTS, SIDE VIEW

YOKE ADJ. BRACKET

YOKE PLUG LEADS

PURITY COIL

BLUE BEAM POSITIONING MAGNE T

NECK SFEELD SECURING CLAMP

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The output of the convertor is link coupled into the IF

system which employs four stages of amplification. The

gain of the RF tuner and the IF system is controlled by

AGC voltage derived from a conventional AGC keyer tube.

The output of the IF system feeds two "potato detector

circuits.

One detector is designated as the "Y" detector, the output

of which consists of the usual monochrome video and sync

information. The other is the chrominance detector which

delivers two output signals. One signal is the conventional

4.5 mc intercarrier sound IF signal which is then passed

to a 4.5 megacycle amplifier, limiter, ratio detector and

audio amplifiers in the usual manner. The other signal is

the chrominance sub-cartier signal which is centered about

the frequency of 3.58 megacycles. The signal output of this

channel is split off in two directions. One signal is fed to

the input of the two synchronous color detectors. The other

chrominance signal is fed to a device called the burst gate.

This stage is normally biased off and is driven into con-

duction by a pulse during the horizontal retrace interval.

Thus, the burst gate will only pass the eight cycles of 3.58

rric "pilot" burst signal.

The 3.58 rnC burst is then used to shock excite o 3.58 mc

piezo-electric crystal. which in turn develops a continuous'

wave 3.58 mc output voltage. This signal is next passed to

a limiter, the output of which consists of two 90 degree out.

of-phase voltoges. One of these voltages fed to the B-Y

synchronous detector and the other to the R-Y synchronous

detector By introducing these two out-of-phase voltages,

we are, in •ffect, reinserting the 3.58 inc reference cartier,

which of necessity, had been suppressed at the transmitter.

The output of the B-Y and R-Y detectors now consists of the

"I" and "Q" color signals initially derived from the matrix

amplifier at the transsinittet, but both shifted 33 degrees in

phase to produce instead, o "B Y" and an "R -Y" color

signal. The R Y and B Y signals ore fed to their respective

amplifiers.

The output voltages of these amplifiers are again divided

into two separate signal paths. First, sample output voltages

from both amplifiers ore mixed in a simple adder to form a

"G -Y" signal which is then amplified by the "G -Y" am-

plifier. Secondly, the output signals of the R-Y G Y and

B Y amplifiers are fed to their respective Red. Green and

Blue adders

Before R Y, G-Y end B-Y actually become R G, and B, we

must first odd "Y" to each signal. As mentioned previously,

the "Y" detector output contains all the monochrome detail

infotmation, whcih next Is amplified by the "Y" amplifiers.

Because the bandwidth of the 3.58 mc sub-carrier amplifier

is mode relatively narrow compared to the "Y" channel the

color signals are somewhat delayed. Hence, the "Y" signals

also must be accordingly delayed. A "lumped constant"

delay line is inserted immediately ahead of the second "Y"

amplifier to accomplish this end.

The "Y" signal is then added to the R.Y. G-Y and B-Y

signals by means of simple resistive adders. The resulting

R, G and B signals are amplified and then used to drive the

R. G and B guns in the tri -color picture tube. DC restoration

Is incorporcrted In each gun circuit so that the black level

reference will be maintained. If this facility were not in-

corporated, the picture background, on actually dark scenes,

would not recede toward black but rather would assume some

color other than that desired.

Since color television receivers will be called upon to also

reproduce monochrome television programs, a means must be

provided (preferably automatically) to disable the color

circuits. It is generally true that in the absence of 3 58 mc

side-bands, the R-Y and BY detectors will not function.

We should note however, that transmissions of o monochrome

tronsrnitter may include 3.58 mc side-band components which

together with random noise may cause the synchronous

detectors and the B-Y and R-Y amplifiers to function. This

produces o spurious pattern called "parc", in the high de-

tail portions of the picture, such os in the vertical wedge of

o test pattern. A color killer circuit is incorporated so that

in the absence of a 3.58 nu color transmission burst, the

R-Y and B-Y amplifiers will be biased below condition and

thus prevent the aforementioned objectionable color inter-

ference in the received monochrome picture.

The remainder of the receiver consists of those circuits

required to generate and synchronize th• various sweep

wav•forms, as well as to generate special dynamic con-

vergence and focus waveforms required by the tri -color

picture tube.

A sample of the detected "Y" signal Is fed to the sync

amplifier, noise canceller and clipper in the usual manner.

The clipper suppli•s the vertical oscillator and horizontal

phase detector with their respective synchronizing informa-

The vertical oscillator and amplifier supply the required

vertical sw•ep to the vertical deflection coils of the yoke.

A portion of the vertical sweep waveform is picked off,

shaped and then fed to a cathode follower. This blanking

pulse is then impressed upon the cathode of each picture

tube gun (R, G and B) to provide picture tube blanking dur-

ing the vertical retrace interval. A parabolic waveform is

also derived from the vertical output stage which is applied

to o horizontal and vertical convergence tube. The dynamic

convergence voltage developed by this tube is applied to

the convergence electrode of the picture tube.

The horizontal phase detector functions in a manner vim i lar

to monochrome practice. It produces an automatic correcting

voltage by virture of o comparison between the phase andar

frequency of the incoming horizontal sync pulses and the

pulses generated in the horizontal sweep system. The de-

veloped correction voltage is applied to a reactance tube

which, in turn, controls the frequency of the horizontal

oscillator. The horizontal discharge tube shapes the driving

pulse which is applied to the horizontal output stage. This

stage is coupled through the horizontal output transformer

tothe horizontal deflection coils of the sweep yoke assembly.

As in monochrome practice, a diode damper is incorporated

to dampen the undersired oscillations at the beginning of

each horizontal sweep pulse and to use this engmgy, after

rectification, to supply a boosted B plus supply voltage to

the horizontal output stage and the vertical multivibrator.

Two high-voltage rectifiers systems ore connected to the

horizontal output transformer. The first rectifier to be con-

sidered is the 20,000 volt high efficiency doubler type rec-

tifier which supplies the final anode of the picture tube. A

special regulator tube is incorporated in this circuit to

automatically regulate the final anode voltage so that It

will not vary with changes in the luminosity of the picture.

The second high-voltage rectifier develops a potential of ap-

proximately 3000 volts and is applied through a potentio-

meter to the focusing electrodes of the picture tube guns.

A sample of the horizontal output transformer pulse Is fed

to the horizontal blanking tube, the output of which is con-

nected to the picture tube cathodes to provide blanking

during the horizontal retrace interval.

A parabolic waveform is derived from the horizontal output

stage which is also applied to the horizontal and vertical

convergence tube. This provides a dynamic horizontal con-

vergence voltage which is applied to the picture tube con-

vergence electrode.

The "composite" parabolic dynamic voltages ore also used

to modulate the 3000 volt focusing DC voltages. This Is

required to maintain good focus throughout the entire roster

0.40.

The low voltage power supply is quit• conventional in Its

design. It primary consists of a full wave voltage doubler

whcih delivers approximately 400 volts. The negative lead

Is returned to chassis through a low total DC resistance re-

presented by the color purity coil circuits and the field

neuttolizing circuits. The negative return provides o 2 to 3

volt bias for use in various portions of the receiver.

ALIGNMENT

The following data includes the alignment of the RF. IF,

audio IF, chromo amplifier and •ubcarrier generator circuits.

The procedure also includes the adjustment of the mat.

rising controls, iei R-Y gain, G-Y gain and G-Y ratio.

RF ALIGNMENT

1. The RF tuner may be aligned without removing it from the

main chassis. Disconnect the 300-ohm transmission line

from the antenna input transformer, T107 and disconnect the

B plus to the oscillator.

2. Connect the sweep generator to the RF tuner antenna in-

put transformer using the G-E ST-8A balanced adapter to

obtain 300 ohms output, see figure 6. The adapter should be

connected to the RF tuner through approximately three feet

of 300-ohm transmission line and a resistor pod, os shown

in figure 3. When using other test equipment of the unbal-

anced output type, a pod as shown in figure 8 should be

used Instead.

SWEEP OUTPUT Teo taj TO CORKER

300n LINE

RESPONSE IRON RECEIVER

NOR SwEEP VOLTAGE TO SCOPE UNSNIELDED FAIR

FIG. 6. RF SWEEP EQUIPMENT CONNECTION DIAGRAM

FIG. 7. IF SWEEP EQUIPMENT CONNECTION DIAGRAM

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•. • r(1811..••Tne etsaltanot

CMCBLUI

/1112111= tErITE

•

15011

1•14.t .L.0,

FIG. 8. SWEEP EQUIPMENT TERMINATION

3. Connect a 3-volt battery to the AGC terminal of the RF

tuner, with the positive lead of the battery connected to th•

tuner chassis.

4. Should it become difficult to obtain proper tracking on

channels 7-13 with the indicated adjustments, proper track-

ing may be achieved by adjusting the coil L157. If necess-

ary, L153 and L121 should be knifed to provide correct re-

spon•e on channel 7, after C104, C106 and C108 have been

correctly cajusted for channel 12. These coils should be

dressed with an insulated tool to prevent o B plus short.

5. It is possible to obtain two different settings of C105,

that will give the proper RF bandwidth. The correct setting

may be determined by switching from channel 13 to channel

12 and observing the change in bandwidth. The correct set-

ling will result in a slightly greater bandwidth on channel

12.

6. When proper tracking on the low channels cannot 6.

achieved with the provided •crew adlustments, the induct-

anos of the coils, L108, L110, L111, L115, L117, L118,

L144, L146, and L158 may be varied by Inserting a knife

blade between the windings. This method of adjustment re-

quires the removal of the tuner shield, a procedure which

will defunct the circuits. However, in most cases the pro-

vided screw-type adjustments will suffice to achieve pro-

per hocking through all channels after the shield has been

replaced.

7. The picture and sound carrier marker should not be less

than 90% of the peak of the RF response curve. Refer to

the "limits" curves shown in the accompanying alignment

c hart.

8. Seal trimmer screws of C105 and the brass cores in the

colis L114, L112, L119, L145, L109, L155, L159, with wax

to prevent detuning. Seal the tuning screws in trimmers

C104. C106, and C108, with glue. R•connect the B plus

oscillator lead on the RF tuner terminal board and connect

the transmission line to RF tuner input transformer .

9. For rarelyer over-all alignment check, see IF Alignment

Chart.

T.06 vIce 140 •

Li LISt rrLuraJ 14 MI =,‘ d "ese PM 14? 055

L104 eS1 141, 'If I./

LUZ

""k'gr

LII4 O. • ••••••[.

FIG. 9. RF TUNER ADJUSTMENTS, SIDE VIEW

,06 TIO/ VO VIO? T106 V103 e F. TRY M., 14•0151, ,11 • elp .4

FIG. 10, RF TUNER ADJUSTMENTS, TOP VIEW

CIS, 1.00ros CONT.C.

SINT.

91

15CL100 (COLOR MODEL) RF ALIGNMENT CHART

(a) Set generator sweep width to 10-15 Inc.

(b) Signal input point at RF tuner input transformer, 1107.

(c) Observe r•sponse curve at test point 1, figure 10, thru

10,000 ohm resistor. Connect test equipment ground lead to

RF tuner chassis.

(d) Adher• to following order when performing a complete

al ignment.

(e) When following the procedure below, on attempt should

be mode to obtain the indicated ideal response curves.

Minor deviations from the ideal curv•s may occur, the max-

imum limits of "tilt" and or bandwidth being shown in the

"Remarks" column.

S

T

E

P

W ay, &

Sweep

Gen.

Channel

Mork.

Generator

Frequency

MC

ADJUST REMARKS AND LIMITS

1 No. 12 205.25 CI04, C105 ond C108 (Fig. 4 IS 5) for maximum gain end Return, C108 and or LI57

209.75 proper bandwidth of 4.5 mc. to obtain curve "A" below. for proper tracking; see

Limits are shown in lost column. Note 4; C105 controls band-

width, C104, C106 and C108

2 No. 13 211.25 brings circuits into resort-

215.75 onc•.

3 No. 11 199.25

203.75

4 No, 11:1 193.25 No adjustments: check tracking; 5

197 .75 obtain COrytt "A"; limits shown

5 No. 9 187.25 in last column. S•• notes 4, 5

and 7. 191.75

90/

6 No. 8 181.25 111 5

185.75

7 No. 7 175.25 "A"

Ideal CLOYO Tilt Limit Curves 179.75

8 No. 6 83.25 L112, L114, L119 and L159, for

87.75 maximum gain, optimum curve

flotne•• and 4.5 mc bandwidth;

see curve "B" and Note 7.

..‘

-5

9 No. 5 77.25

_

OttO13 /

81.75 No adjustments, check tracking; 01406

10 No. 4. 67.25 see curve "B" and No.. 6 & 7. ...

71.75 _

11 No. 3 61.25 L109, L.155 and L145 for moat-

65.75 mum gain and optimum curve

flatness. See curve "B".

12 No. 2 55.25 No adjustments, check tracking; "B"

59.75 See curve "B". Ideal Curve Bandwidth Limit Curves

V103 MO/ OSC

L151_ Kim N ea-ià

T K)6

FIG. 11 OSCILLATOR ADJUSTMENTS

C151 _.111114OCCOITRAÙ

L 165 - ---%144f1effa

L166

OSCILLATOR ALIGNMENT

GENERAL: Two methods of oscillator frequency ochustment

ate given below. The first method uses a transmitting

station for the adjustment while the second method requires

a sweep generator to align the oscillator coils.

A. "ON" STATION SIGNAL ALIGNMENT

RF and video IF alignment must be correct before attempt-

ing oscillator alignment. A transmitt•d station signal is

needed for each one of the coins being adjusted. Tune in

the stations starting with the highest frequency channels

and adjust the tuning screws for all available stations so

that with the fine tuning control in the full-clockwise pos-

ition, audio is just visible in the picrate. Then, check to

see that best picture response on all channels takes place

apptoxlmately in the center of the oscillator fine tuning

range. B. SWEEP ALIGNMENT

1. RF and video IF must be properly aligned before align-

ing the oscillator.

2. Connect a 3 volt battery to the AGC terminal of Otte RF

tuner with the positive lend of the better y connected to the

tuner chassis.

3. Disconnect the 300 ohm transmission line from the ant-

enna terminals to the RF terminals and connect the sweep

generator to the RF tuner terminals os described in note 2

under RF Alignment.

4. Set the fine tuning knob 180 degrees (Si turn) from the

counter-clockwise limit of its rotation, i.e., rotate the fine

tuning knob counter-clockwise to the end of its travel, then

turn the fine tuning control knob 180 degrees OS turn)

clockwise. This setting of the fine tuning control should

be maintained for all oscillator adjustment,

5. Make the indicated adjustments so that the picture car-

riter marker for the channel falls at 50% on the high fre-

quency side of the response curve.

OSCILLATOR ALIGNMENT CHART

S

T

E

P

No.

R'cvr. M.

Marker

Position

Marker

Generator

Frequency

SIGNAL

INPUT

POINT

OBSERVE

RESPONSE

CURVE AT

ADJUST SEE

NOTE

13 No. 13 211.25 MC L167 Channel Ho. 13 oscillator adjustment.

14 No. 12 205.25 MC L166 Channel No. 12 oscillator adjustment.

15 No. 11 199.25 MC L166 Channel No. 11 oscillator odjustment.

16 No. 10 193.25 MC L166 Channel No. 10 oscillator odjustrnient.

17 No. 9 187.25 MC LI66 Channel No. 9 oscillator adjustment.

18 No. 8 181.25 MC Antenna Test Point L166 Channel No. 8 oscillator adjustment. terminals 4 3, 4,

19 No. 7 175.25 MC (see Note 3) (video detec- L166 Channel No. 7 oscillator adjustment. 5

20 No. 6 83.25 MC tot diode load) L165 Channel No. 6 oscillator adjustment.





VIDEO IF ALIGNMENT

The following alignment data is divided into two separate

procedures. Because of the extremely high adjacent channel

trap attenuation, the conventional method of sweep obser-

vation of these traps becomes difficult. Hence all traps

shall be pretuned by applying an amplitude-modulated signal

and adjusted for minimum signal output.

The second portion of this procedure involves the shaping

of the RF response curve in the conventional manner by

the application of o sweep generator signal. During this

procedure, observe the usual precautions regarding warm-up

time, equipment cable lead dress and generator output cable

termination, see figure 3.

TRAP ALIGNMENT

General: As noted above, an AM signal is required for trop

alignment. In many cases, the technican will have a suit-

able AM signal generator available. It should cover the

range of 37 to 48 megacycles at fundamental frequency,

with available internal 400-cycle modulation. When this

type of signal is used, the traps should be adjusted (.

minimum 400-cycle signal as observed on the oscilloscope.

Owners of General Electric sweep alignment equipment may

obtain the required amplitude-modulated carrier frequencies

by a simple manipulation of the equipment controls as noted

below.

Those technicians who do not have either of the above

equipment available are advised to omit the trap alignment

procedure. With the exception of the video amplifier 4.5 mc

trap L161, the traps will not become seriously mis -aligned

due to tube changes. The above-mentioned 4.5 mc trap may

be sweep aligned, if de•ired, in which case a 4.5 mc sweep

signal should be used in step 3, of trap alignment chart.

The trap may then be tuned to minimum response at 4.5 Inc

which should be crystal marker calibrated.

Obtaining AM Output From G-E Sweep Equipment:

The General Electric ST-4A Sweep Generator will provide 60

cycle square-wave amplitid• modualted signal. To obtain

this signal proceed as follows:

I. Turn the sweep generator sweep width control fully

counter-clockwi". This will provide a steady (acre •weep)

2. Turn the sweep generator blanking switch "On". This

will square-wave modulote the carrier at a 60 cycle rote.

3. The nest step is to calibrate the frequency of this AM

carrier.

a) Turn the marker generator "On" and set the dial to the

desired frequency (4.5 mc, 38.0 mc, 41.25 ma, or 47.25 inc).

b) Slowly tune the sweep generator through the desired fre-

quency. As the desired 'frequency is approached, a strong

beat signal will be observed on the o•cilloscope. At exact

resonance, o zero beat condition will be noticed on each

side of which will appear a beat pattern. Minot sweep gen-

erator back and forth frequency drift may be noted. However,

this drift is insignificant and may be disregarded.

c) Turn off the marker output.

4. Apply this AM signal according to the instructions in the

chart below.

5. The signal observed on the oscilloscope appears as two

parallel lines. When the trape are properly tuned the dl..

tance between these linee will be at a minimum.

NOTE: It may be nec•ssary to use full output of the sweep

generator and n•or maximum oscilloscope gain to observe

proper trap tuning.

TO 500ANAF TEST POINT•111-1

TO CHASSIS F

RECO EIVt R

IN64

100K

TO VERTICAL INPUT OF SCOPE

FIG. 12, DETECTOR NETWORK

STEP AM-GENERATOR INPUT POINT AM-GENERATOR FREQUENCY

ADJUST REMARKS

1

Connect AM signal generator

to TEST POINT I through

.001 ntf capacitor.

41.25 MC

47.25 MC

41.25 MC

L152 For minimum

L153 output

L158

Connect o•cillo•cope to

Teat Point 5 for Step 1

and 2.

2 39.75 MC LI51 For maximum

out

38.0 rnc hap over-shoot

actually sets sound shelf.

3

Connect AM signal generator

to TEST POINT 5.

4.5 MC L161 Foe .11'1...

out put

Connect detector network,

Fig. 7. Between oscillo•-

cop• input and receiver

Teat P.Int 20- Rtu".‘,•

V107. Set Contrast control at maximum.

4 3.58 MC L201 For minimum

output

TRAP ALIGNMENT CHART

IF SYSTEM SWEEP ALIGNMENT

GENERAL: Aller the traps have been set at their proper

frequencies the IF curve may be shaped.

NOTES:

I. Turn Picture Contrast control to minimum.

2. Connect oscilloscope to Test Point 4 through 20,000

ohms resistor. (It is nec•ssory to shift oscilloscope from

TP 4 to TP 5 to ob both seta of IF curves.)

3. Apply a negative 415 volt battery bias voltage to Test

Point 4 throughout IF alignment.

4. Calibrated scope for 2" deflection with % volt signal.

5. Note that the following procedure uses 45.0 mc a• the

10% reference point. Maintain the sweep generator output

so that the baseline-to-45.0 mc marker amplitude equals 2

Inches. Align as indicated in the alignment chart.

ALIGNMENT NOTES:

1. Remove the horizontal output tubes V131 and V132 from

their sockets being careful that the plate connectors do not

short to the chassis.

2. Remove the sync amplifier and noise canceller tube V113

from its socket.

3. Turn volume control and btightnes• control to minimum.

Turn Contrast control to maximum.

4. Set channel selector to channel 11 position with Fine

Tuning at the maximum clockwise position.

5. Connect oscilloscope in series with 20,000 ohm Vz watt

carbon resistor to indicated Test Points. (20,000 ohm re-

sistor is used throughout IF alignment.)

6. Allow rece icen and test equipment to worm up at team 20

minutes. (Refer to Tube and Trimmer location drawing for

adjustment locations.)

AUDIO IF ALIGNMENT

NOTES:

I. Tune in a television signal. This will provide a 4.5 inc

signal source for audio alignment. Keep the Volume control

turned down unless the speaker is connected.

2. Figure 13 shows a simple resistor network needed for

the alignment of T402 secondary. These two 100K resistors

should be chosen a• accurately as possible, for equal re-

sistanc•• Be sure to remove these resistors after complet-

ing the alignment. Align as shown in chart.

92

1

15CL100 (COLOR MODEL) IF ALIGNMENT CHART

S t • P

CONNECT SWEEP

GENERATOR

ADJUST or PEAK DESIRED RESPONSE REMARKS

1

Into Tot Point 3 and

chassis through .001 ,

rnf capocitor. Centirr

sweep fr•quency ap•

pros. 44.0 inc. Sweep

. . width appeau 10 mc

LI59 for maximum at

43 .1,,,,

L155 for maximum at

45.6 it.tc .

ar 251.11

45.75MC

Observ• r•sponsis at Tot Point 4.

Make Indicated adjustment• to obtain

maximum gain con•Istent with proper

curv•. Corners of curv• peak must

show slight rounding.

2

45 75MC

43.

Check with scope on Tot Point 5

for indicated response. It may be

n•ce•sory to alternaf• scope obsinva-

tion betwe•n T•st Points 4 and 5

to achi•v• proper respons• curv•s.

3

Into lest Point 1 &

chassis through .001

rrif capacitor. Center

sweep frequency op-

prou. 44.0 inc. Sweep

Sweep width approx.

10 inc

T153 for max .42.2'Tic

T152 for max at41.6mc

T151 foe maximum at

45.15 roc

T106 lue maximum at

45.75 r.

1154 for maximum Of

43.8 "`•

• tt•'"

45%

42 514C. 55%

5.0MC 100%

Check with scope on TEST POINT 5

for indicated curve. Adjust T151 to

so 45.75 inc at 45%. Adjust 1159 to

set 42.5 inc at 55%. Adjust 1154 for

good symmetry (No Tilt) at peak region

of curve.

4

Se• remork• column .

42 DUC 100%

•

41.61IC 50% 45.755C 50'f.

39..7.Stli. 47.25MC ,-4---

4,25MC

Check with •cope on Tem Point 4 for

Indicated amo.. If nec•••ory. Adjust

L151 to set 39.75 nit as •hown. Adjust

1153 to set flat "shelf" about 42.2 mc.

Alternat• scope between Test Point• 4

& 5 while making minor adjustments to

obtain both proper curve, of steps 3 8.

4.

5

Into RF tuner input

through balanc•d ad-

apt. & 300-ohm pad

& line. Sweep chan-

nels 10 & 5. Sweep

width approx. 10 mc.

C108 (RF tuner)

Align for zero "tilt" on ch. 10. Check chs. 7-13 and make further

compromise adjustment •o that •ach channel will have no move than

10% "tilt" with the Fine Tuning adjust•d to provid• the proper

sound and picture IF markers.

6 1145-L159 ( R-F

Tuner)

Align for z•ro "tilt" on channel 5. Check channels 2-6 rind make

further compromise adjustment, •o that each channel will have no

more than 16% "tilt" with the Fine Tuning adjusted to provide the

proper sound and picture IF markers.

AUDIO IF ALIGNMENT CHART

Step CONNECT VTVM or 20,000 ohms volts

METER ADJUST METER INDICATION REMARKS

1 To test point 7 and chassis L401 and 1401 (top and

bottom cores)

Adjust for maximum

deflection,

Voltage to be read is

negative w ith respect

to chassis. 2 V124A, pin 2 and chassis T402 primary (bottom core)

3 Test Point 8 & cneter of two 100,000

ohm resistors, See Fig. 8.

1402 secondary (top core) Adjust for zero volts

DC output.

Repeat Step• I, 2 8.3 to ... art. prop... final

odi ustment.

VI23 6AuS

calo

ADJUST FOR ez•SIMUM DEFLECTION

'V124 2

6TIS 3

• METER

O 20,000 ONMS/VOLT APPROX.

VOLTS

R411 C4I2 _ 22k C4I3

IOMF 505

TO VOL CCOETR

'/ iO

-= a ....ce,e" RESISTORS FOR T

TOP-COPIf ALIGNMENT 'NANO-PICK. /M_SfST WITNIN 5% OE EACr. OTNER.

22k ADJUST FOR ZERO VOLTS

`• • ,t I 5)441. TEST POINT METER

20,000 ONMS/VOLT FIG. 13 ALIGNMENT METER CONNECTIONSSE ' C'el'°*EST " NG'

TO TEST POINT

flOtto

75"."

TO CHASSI OF RECEIVER

M-78.J776•13

300K

SCOPE PROBE

SCOPE ONO

COIL IS PRETUNE6 TO PASS 3 58MC

FIG. 14. COMPENSATING NETWORK

CHROMA CHANNEL ALIGNMENT

INTRODUCTION: The purpose of the Chromo Channel is to

amplify the relatively low-detail color subc.rier information

to the synchronous d•tectors and th• subcarri•r generating

systems. Tice bandwidth of the Chroma Channel is quite

narrow, being approximately 1.2 mc wide, measured at the

maximum corner points of its amplitude response. It is most

important that the 3.0 mc and 4.2 mc "corners" be accur-

ately set since the .8 usec. delay incorporated in the "Y"

channel is predicated upon the 1.2 Inc passband of the

chroma channel. Also, the 4.5 inc response must be at an

absolute minimum to prevent "900 KC" beat interference in

the chroma channel. Be sur• that the 4.5 mc market lies on

the response ba•eline as shown in Me accompanying align-

ment chart.

NOTES:

1. Connect -15 volt bias supply between Tot Points 4 and

23 and ground.

2. Connect scope with detector network, (Fig. 7) to Test

Point X

CHROMA CHANNEL ALIGNMENT CHART

St e 0

CONNECT SIGNAL ADJUST DESIRED RESPONSE REMARKS

1

Apply AM signal through

.001 in( capacitor to

Test Point 4.

L302 for maximum at 3.58 mc.

Repeat steps 1, 2 and 3. 2 L301 for minimum at 4.5 inc.

3 1301 secondary (bottom core)

for maximum at 4.2 .c.

4

To Test Point 4 connect

•weep generator through

a .001 inf capacitar.

C•nter sweep approx.

3.5 mc. Sweep width 5

mc.

T302 secondary (bottom corrs)

to position 4.2 roc on corner

as shown. 1302 primary (top

core) to flatt•n curv•.

4.21.IC

3.513MC ...,n3.01

4.5t4c

Check 3.0 rnic point and odju•t

1302 secondary (bottom core)

for desired curve.

5 T301 primary (top core) to

"fill in" curve its shown.

Adjust secondary (bottom core)

to politice 4.2 mc.

3.01.1C 4.214C

3.581AC

.. 4.514C

Minor saddles may occur on

response peak. Duplicate

carne OS closely as possible,.

SUBCARRIER GENERATOR ALIGNMENT

The alignment of this section of the rec•iver essentially

consi•ts of peaking the various tuned circuits to 3.58 mc as

indicated by means of VTVM DC voltage readings. This

proc•dur• requires the use of a stable 3.58 rric crystal con-

trolled signal from a suitable generator, or else it may be

performed while the receiver is tuned to o station which is

broadcasting a color program.

GENERAL: Before tuning ttes various circuits in the sub-

carrier generating syst•m, a check should be mode to assure

that the gating pulse of the burst gate is properly phased.

Thi• can only be done while tuned to a color program or 10

a singal from o suitable color bar generator.

1) Tune receiver to color signal for normal picture

2) Connect wid•-barid o•cilloscope to Test Point 6. If wide

band oscilloscope is not available connect network shown

in figure 14 to input cable of General Electric ST-2A oscil-

loscope. This network increases the relative scope gain at

3.58 mc to allow eosier observation of the burst signal.

Tune the network coil to provide maximum 3.58 mc ampli-

tude.

3) Adjust hotisontol oscillator coil core (L501)

picture locks in horizontally on weak signal as

selector is switch on and off channel.

so that

channel

4) Adjust C515 (horiz. detector phasing) so that gate pulse

is centered beneath burst signal as ob•erved on oscillo-

scope. Composite signal should appear as shown in figure

10.

NOTE: Some early production receivers do not Incorporate

C515. In such receivers, the horizontal oscillator coil

should fir•t be adjusted to provide proper horixontal picture

sync lock-in, and then be further adjusted to provide gate

pulse and burst coincidence as shown in figure 15.

fay GATE PULSE

FIG 15 GATE AND BURST PULSE COINCIDENCE

For those interested, a sample oscillator may be constructed

according to the schematic diagram of Fig. 16. In this circuit

a crystal of the type incorp.ot•d in the color receiver may

be used. When using a signal of this type to align the sub-

carrier channel, insert the signal into test point 4 (chroma

detect. circuit).

PROCEDURE:

1. Tune receiver to transmitted color program or insert 3.58

mc signal as noted above.

2. Set chroma gain and contrast control fully counter-

clockwise.

3. Set Hue control capacitor (C336) to the middle of its

range. Maintain this adjustment throughout remainder of

procedure. This may require loosening of the Hue control

shield. Move shield back just far enough to observe capa-

citor plate s.

4. Adjust bottom core screw of T304 for exactly one inch

exposure, measured from the core retaining clip to the slot-

ted end of the core screw.

5. Place VTVM on Test Point 7 through 2.2 rnegohrn re-

sistor. Set 1304 top core screw l3" out measured between

the top cote screw clip and the slotted end of core screw.

6. Tune L303 for maximum VTVM reading.

7. Adjust T304 top core for maximum VTVM reading.

8. Repeat steps 6 and 7 twice.

9. Peak L304 for maximum VTVM

10. Connect VTVM through 2.2 rnegohrn r•sistor to Test

Point 24. Peak L305 for maximum VTVM reading.

11. Disconnect 3.58 mc •ignol source (e...rotor

program). Tune receiver for normal picture on monochrome

signal. Turn contrast and chroma controls fully counter-

clockwise and increase brightness control so that blank

raster Is visible.

Of COlOf

Disable color killer circuits by by-passing plat• of V120B

(Pin I) to chassis through .1 mf capacitor. Reduce picture

width to minimum and adjust horizontal centering control

•o left edge of vast« is visible.

Adjust the neutralizing capacitor C318 (below chassis) to

remove tunable noise effects or striations at the left edg•

of the ra•ter. The tuning effects of C318 ore most pro-

nounced and axe therefore easily seen.

PHASING OF SYNCHRONOUS DETECTORS

If a color bar generator is not available for this procedure,

turn the receiver station selector to a channel irrhich is

transmitting a color program or the standard color bar test

signal. Make sure the "Hue" control is set in the middle

of its range.

1. Couplote a 45.75 mc signal to the input of the 1st IF

amplifier tube V104. Adjust the fine tuning control for

zero beat between the two 45.75 mc carriers. Leave tuning

control set, as is, and disconnect 45.75 Inc generator lead.

NOTE: The following procedure re quire: use of VTVM, on

receivers incorporating common detector cathode connection

as shown on schematic inset, connect VTVM ground lead to

junction of R266 and R631 instead of to chassis. Other

lead of VTVM should be connected as indicated below.

a) Adjust the top slug of T303 all the way out.

b) Connect o VTVM through o 2.2 meg resistor to test point

10. (Pin 1 of V121).

c) Tune the bottom slug of T303 for maximum DC voltage

reoding on the VTVM.

d) Connect VTVM through a 2.2 meg resistor to test point

14. (pin 1 of V116).

e) Tune the top slug of 1303 for a maximum DC voltage

reading on VTVM.

I) Repeat steps b, c, d, and e

Steps "a" through "f" above, will bring the detectors very

closely into phase and in many cases will suffice to pro-

vide good color accuracy. Should viewed programs or color

bars appear slightly in error with respect to color accuracy

(after matrixing procedure, below, has been accomplished),

adiust "Hue" control for color c.rectIon. Should the need

for more accurate color phasing be indlcat•d, follow the

procedure listed below for accurate detector phasing.

2. Tune receiver to color bar pattern. Set "Hue" control to

middle of Its range.

3. Adjust fine tuning control according to item 1, above.

NOTE: The following adjustment• require that the t•chni-

clan be familiar with the sequence of colors and other In-

formation contained In the color bon pattern used. In the

following procedure, the orlju•trnents are maid•to"lero-set"

the amplitude of the R•Y and B-Y bars. Proper phasing of

the 90 degree displaced gating subcorrier voltages will

produc• caro B-1 output signal in the R-Y channel and

zero R.Y output signal in the B.Y channel.

In the •vent that R-Y and B-Y bars ave not Included In the

available color bar pattern, only the preceding "DC" align-

ment should be used and the following st•ps 4, 5 and 6

may be disregarded.

R-Y 11 -y REO YELLOW WRITE CYAN BLUE GREEN IMAIPE1114

FIG. 17. TYPICAL COLOR BAR PATTERN

4. Connect scope synced at the horizontal sweep line rate

to Test Point 15 (B-Y Amp.). Figura 17 indicates the pos -

sible sequence of information contained in a color bat test

pattern. Tune the primary (bottom core) of T303 until zero

amplitude of the R-Y bar is obtained as shown in Figure 18.

fw4TE

RED

YELLOW

[TAN

BLUE

MAGENTA

FIG. 18. R-Y ZERO ADJUSTMENT

0 fsyd0 ••

5. Connect scope synced as above, to Test Point 16 (R -Y

Amp.). Tune secondary (top core) of T303 until zero am-

plitude of the B-Y bar is obtained os shown in Figure 19.

6. Repeat steps 4 and 5 above, to a••ure accurate quad.-

tsme voltage phase angle setting.

7. Now On receivers equipped with hum canceller control.

R631, remove all signal input to receiver. Connect scope to

test point 19 and adjust R631 for minimum 60 cycle hum

output.

Y

B-Y

RE:

YELLOW

MAGENTA

BLUE

CYAN

GREEN

FIG. 19. B-Y ZERO ADJUSTMENT

0 It 36.141-•11

1

15CL100 (COLOR MODEL) RECEIVER MATRIXING PROCEDURE

The term "rnatrixing” applies to those circuits which per-

form the function of combining the various color difference

signals, in proper proportions, to eventually form the r•d,

green and blue picture tube driving voltages.

Specifically, the R-Y and B-Y voltages ore first adjusted

in amplitude and then, from thses proportioned voltages, the

G-Y voltage is formed and adjusted in amplitud•. It should

be noted that misadjustment of the rncrtrixing controls will

couse erroneous picture color information lust as readily

as if the individual detector gate phases were improperly

adjusted.

The following procedure should be followed in the sequence

indicated.

1. Set channel selector to a standard color bar test signal.

Couple a 45.75 mc signal to the Input of the first IF am-

plifier V104. Adjust the fine tuning control for zero beat

between the two 45.75 rnc cartiers. Leave fine tuning con-

trol set, as is and remove 45.75 ',lc signal lead.

(o) Turn chrome gain control, R603, fully counter-clockwise.

(b) Place scope probe 01 Test Point 18. (pin 18 of V140).

2. Y. B-Y MATRIXING

(a) Adjust the contrast control to center position. Do not

move this control again throughout the remainder of the

matrixing procedure.

(b) Adjust the Chrome control until the response is like

figure 20. Red and yellow should pass through zero at the

some time Cyan and blue reach a maximum equal to the

amplitude of the white bar. The Chrome control must remain

fixed at this setting throughout the remainder of the mat-

rixing procedure.

REDi

WHITE CYAN BLUE MAGENTA

YELLOW GREEN K-136J41-2A°

FIG. 20. B-Y MATRIX

3. Y, R.Y MATRIXING

(o) Place scope probe at test point 17, (Pi. 3 of V140 ).

(b) Adjue R-Y gain control (R605) until the response re-

sembles figure 21. Red and yellow should reach a maximum

equal to white, at the 'tame time Cyan and blue reach zero

amplitude.

YELLOW RED le WHITE

BLUE

MAGENTA

CYAN GREEN

FIG. 21. R.Y MATRIX

O

4. Y. G-Y RATIO & MATRIXING

(a) Place scope probe on test point 19, (pin 8 of V140).

(b) Short test point 20 to ground. (Grid of V110A).

(e) Adjust the G-Y Ratio control, R606, for the response

shown in figure 22. Note that the green and magenta bars

94

GREEN

CYAN

YELLOW

RED

WHITE

BLUE

a-136..41 3. 0

MAGENTA

FIG. 22. G-Y RATIO RESPONSE

YELL. WN.CYAN G.F.LUN

t RED BLUE

FIG. 23. G-Y MATRIX

MAGENTA

136.1•1 -38

are of equal amplitude but opposite polarity, os are the

blue and yellow bars.

(d) Remove short from test point 20, (pin 9 of V110).

(e) Adjust the G-Y Gain control R607 for the response

shown in figure 23. Yellow, green and Cyan should reach

maximum equal to white, while red and blue reach zero.

NORZ DMA PROD 21

0618

[ST SIZE (POOCH

0616 0615 5551

as0- Of TONE VOLuwE

R623 P5001R621 NORZ vERT• WIN CON, pnASF

HORZ 0Yr4IV 'AR , Drs. C.0;1v »AP ,PRO:12/ GONv AMP esASt

R6I9 ART. cii. R602

0617

o VER1. NOTO BRIGHT NESS

R626 R620

vER T Del UIMOD II GENT

ADJUSTMENT OF T502, HORIZONTAL DYNAMIC

CONVERGENCE TRANSFORMER

Bring scope probe near lead from T502 to C461 and C465,

(probe may be clipped on lead insulation). Sync scope at )5

horizontal rate. Peak T502 for maximum output.

0627 0625 R614 HORE.CE RT. FIELD NEuT BTuE

CD * 0608

GREEN

G' R60180604 GON1RAS1

o R603 GROmA

0R624 eR6„ 6R610 Ré9

PURITY HT TA 62 GREEN RED G2 62

OtANNEI SUECTOR

FINE TUNING

VERT CNN VERT

Cr .PRÓCIPe S£ SI ZE IPROO 21

FIG. 24. FRONT PANEL ADJUSTMENTS, (1ST & 2ND PROD.)



C203

C205

C206

C351

C473

C526 C55I

C552

C553

C554

C554

C555

C559

5 mid., 250V

2 mid., 250V

25-25-25 mid. .25V.

20 add., 150V I mid.. 25V

100 add., 50V

25-25-25 mid. 25V,

150 mid., 250V

300 mid., 250V

80-30-30 mid .450V

50 mid.. 25V 150 mid.. 250V, 40

mid., 450V,5 mfd. ,

250V

100 mid., 250V, 2

mid., 75V,10-10

mfd., 25V

160 mid., 350V

RCE-178

BCE-179

RCE-190

RCE-189

RCE-183

RCE-184

BCE-180

RCE-181

RCE-185

RCE-182

BCE-186

RCE-I87

BCE-191

CONTROLS


Master iirightnes.,50K ohm

Hor. Drive, 50K ohm

Hoc. Cent. ,80 ohm C. T. , mw. Vert. Hold I75K ohm

Vert. Cent., 20 ohm C. T., w. w.

Vert. Lin., 5K ohms. w.w. Vert. Dynamic Convergence

amplitude, 25K ohms

Vert. Dynamic Convergence pha., 5 meg.

Height, 4 meg.

Focus. 5 meg. Fl. V. insulated Triple section, dual shaft

IK ohm - 500 ohm

Tone, Vol.500K,500K carbon

dual shaft /AC .witch 0551

G-Y Ratio -10K ohm carbon

Convergence -15 meg, IW

H. V. Reg. Adj., 2 meg.

Red, Green,BlueG2 100K ohm

Green di Blue Gain,5K ohm

G-Y, R-Y Gain, 200 ohm . w . w.

Color purity, 10 ohm,4W mw.

Field Neutralizing, 15 ohm,

C. T. w.w.

2K ohm, 5W

1K ohm, 5W

150 ohm, IOW

3 ohm

16602

16626

R627

16617

16620

16619

16621

16623

16610

16628 16601.3

6 4

16616,15

R606

R629

16630

16609 to

611

16612,13

R605, 7

16624

R625

R417

11520

16523

R526

RRC-258

RRC-265

RRC-273 RRC-258

RRC-272

RRC-271

FtRC-264

RRC-267

RAC-260

RRC-261

BEC-257

RRC-259

RRC-262

FtRC-263 FtRC-266

RRC-268

RRC-269

RRC-270

BEC-274

BEC-275

RRW-116

RRW-112

RRW-111

RRW-117

CONTROLS


5.6 ohm

50 meg. H. V. type 55 meg. H. V. type

WIRE WOUND

16531

0534

16535

16171

16244

RRW-118

FtRW-113

RRW-114

RRW-110

RRW-115 5K ohm, 5W

2K ohm, 10W

COILS


1.154

1.155.6,8 6163

LI59,60

1.164

1.202.4.4

L203,5,7

1.251,2

1.302

L308

1.401

1.451

1.501

1.502

1.503

1.553

.555

Ist Video IF Grid

Chroma det. ass'y (incl.

C168,9; RI66; Y151)

"Y" det. ass'y (incl.R167

CI71,2; Y162)

Comp. eholte,1000 min.

Choke, 240 mile.

Comp. choke, 150 mie.

Comp. choke,I,800 mic.

3.58 MC tank circuit

Choke, 68 oh Sound takeoff, 4.5 MC

Hor .Convergence phas' g

Hor. Oscillator

Width

Hor. Linearity

Color Purity

Field Neutralizing

RLI-256

RLX-04.5

RLX-046

RLI-261

RI.1-262

RLI-263

RLI-265

RL1-268

R LI - 260

RLI-266

RLI-264

RLC-130 RLD-062

RLD-063

RLP-023

RLN-003

TRANSFORMERS


Vertical Convergence

Hor. Convergence

lior. Output

Power Audio IF, 4.5 MC

let Chroma,3. 58 MC

bandpass

2nd Chroma nandouss

3.58 MC

Ratio Detector 4.5MC

Ist,2d,3d Video IF

3.58 MC Quadrature Delay Line -.8 user

T503

T503

T501

T551

T401

T301

T302.4

T402

T151.2. & 3

T303

DL201

RLC-131

RTC-001

RTO-158

RTP-320 RTL-160

RTB-002

RTB-003

RTD-016

RTL -159

RTP-319 RWD-0114

MISCELLANEOUS


LSP401

PE301

X552

X551

Yoke Speaker 6 1/2"(table mod.)

Crystal -3.579545 MC -i- 100 cycles, quartz

Rectifier, selenium 350ma

Rectifier, selenium 600r,

RLD-064

S-650D

REE-001

RER-017

RER-018

15C1.100 (COLOR MODEL)

V125 6V6 Audio Output V101 6BK7A BF Amplifier


V104 6BA6 1st IF Amplifier

V105 6BA6 2nd IF Amplifier

145 v

V106 6BA6 3rd IF Amplifier

V107 6CB6 4th IF Amplifier

V108 6U8 Y Cath. Follower & Keyer

V109 6U8 "Y" Amp., Sync. Clipper

V110 6U8 "Y" Amp. & G-Y Amp.

V111 12BH7 Red Output Amplifier

V112 6BJ7 DC Restorer

V113 12AT7 Noise Canc. &Sync. Amp.

V114 6BA6 Chroma Amplifier

V115 6U8 Chroma Cath. Follower & Burst Gate

V116 6BE6 R-Y Detector

V117 6U8 R-Y, B-Y Amplifier

V118 I2BH7 Green Output Amplifier

V119 6CB6 Audio IF Amplifier

V120 6U8 Subcarrier Limiter & Color Killer

V121 6BE6 B-Y Detector

V126 12BH7 Vertical Oscillator V132 6CD6 Horizontal Output

V122 1213117 Blue Output Amplifier

VI23 6AU6 Audio IF Limiter

V127 12BH Vert. Output & Blanking

V128 6BL7 Composite Cony. , H. Blankr

V129 6AQ7 Hor. Phase Detector &

Reactance Control V135 Z2176 H. V. Rectifier

V130 12AU7 Hor. Ose. & Discharge

VI31 6CD6 Horizontal Output

TOP CAP DNM ,,

V133 Z2176 H. V. Rectifier

V134 1B3 H. V. Rectifier

V136 IB3GT Focus Rectifier

V137 6AU:1 Damper

V138 Z2188 High Voltage Rectifier

V139 6AU6 Subcarrier Amplifier

TEST CONDITIONS


* Plate caps on these tubes are con-

nected to extremely high DC

voltages, DO NOT MEASURE.

** These tubes have their filaments tied to some DC potential.

t These pins are connected to ex-tremely high DC voltages and

should not be measured without

special probes capable of measur-

ing at least 30,000 V.

AC line voltage adjusted for 117 V.


All readings with VTVM unless other-

wise noted.

DNM - Do not measure.

95

COLOR MODEL 15CL100 (First Production) FOR TUNERS USED ON THIS CHASSIS, SEE PAGE 94.

OUTPUT CIRCUTS OF R.F TuNER

7106 60141/ 1

1/2 6U8

I-F LIP«

'TT-iJ

IÎ L_ _J

VHF TUNER

To PT "2 . ON BRIGHTNESS CHI. 1551

20

S55I LINE

SWITCH

1551

1552 CHASSIS

INTERLOCK

VI40 52 2

N

F551 5a

sa, 810

R55I 6004 2w

e

AGC

VHF TUNER FILS

63VAC

7,. L154

R169

]:[ TEST POINT

V104 1ST 1-F 6BAG

1151

4' 11

ODK '7:150 #51 1000

RI54

153 -1.153 *66

659

/ BOO

'1105 2110 I -F B346

RI57

100K

rn

_CI62 I 800

GREEN 68 .T -3v-rrc-wTO UHF TUNER FILS

,2 116 68.46 .-'43.43 6U8 2/11147 --ifiC86 917e 1141.16 2 6V6 917168L7 6C06

V104 V105 / 1109 1b),V112 VII5 yillEJ-4VIIS 5 2>123 V125 4 Vi2E,ÍO,V128V131

V106 VI37 VII0 Kyilt NC 151.114 14VII7 ..5VI2e4 V124 LV127VI29 9 513022132

4613A6eALM i>»"I "reeer71.4"Agn6.P--6:;-8-e±8-..e 6Te 128H7-• r76Aer ie 12AU7 D6 7 6C X551,450494 *A"

,

5552 750 •

o088118E

EE 76.2 1B" GRT4

1.554 14H ,SEE 3ERTCENTENNCJ R560 C559

220K 160M

8261 350 220K

7 2158

12188 8

R555

82K

6553A 16014F 350v

165.55A

jr 8624 10114

PU-ek-iTY COLDR FIELD OIL COIL .pureTy Fe uT C sHL_Lo

COIL

COMPOSITE SYNC

557 100. IW

GREEN-YELLOW

6+400V C805507

B 4 TO VI-F R-F TUNER ="

TO LFIF TUNER (+220V)

8 +200V

11110.8+190V

8552 470

- 2.5V BIAS -6556

10R558 11 10

IW R559 11

I W

6026

5

%32525

V109B SYNC CLIPPER 1-6u8

8363 MK 813E

+200V

VI 29A HOR. PHASE DE T.

i6A07 6504 C502

-LE.50 1001

96

6507

R3653 R367

22.

6389 .002

R369

8200 820

C C38I .005 .005

V1296 HOR. REACT.

L501 i6A07

47E«

7

VI 26 VERT. OSC.

,28H1 6451

.0039

C452,

3 R.475.1,

.°41

R617 175K

VVERT HOLDS VERT

+200V B T

L. LIN

6483

VI 30A HOR1Z. 05C 1/2 I2AU 7

FREQ

H-190V

R509 2

138K

8510 eaK

R511 27K

3

raid

V130B HOR1Z D1SCH 1/2 12Au7

R6I8

HT CONT

VI 2 7A VERT. OUTPUT

2à1213K-, Di.vc

04

R470

20K

6469

V

R6I9 rmo I 7.

C3-54A4 1- ;8456 30K1F _I_ ;470 450V IW

•

8657 57

86213-K VE CYAN CCNv MAP

10458 241F 75V A477

2W 47K

6514 85,7

5 33«

C3I2 IW .01 /

7

R5I3 •

8514 lU

R546 10K

HONIZ 8626 •VE 50K

+400V. 8524 470K

VERT OFF COILS

VERT CENT eF162Q 20

C456 - 8' SEE POWER SuPPLYI

8.

VI3 I a V132 HOR17 OUT

6CD6

R5I8

e000 520

5W

• + 200V

COMPOSITE SYNC

6459 5000

V106 MD I -F 68A6

0 10K TEST 1F1359 POINT

VI 1 38 SYNC AMP 1/2 12AT7

R356 22K • 12/

001

'11473 rooK

+2

6533 C532

VI 3 3 H V HEET 22176

Ce 3 VI I3A NOISE CAN

,210

•

8355 IN

15K

TIAIF 8371 120K

TEST v 107 Opoper 4eeliF

A,' Ili :I

6161 - NM I

TEST POINT

VIOBB AGC KE YER

1/2 8118

83

+200V

V127B VERT BLANK

1/2 120117

VI 288 HOR BLANK 1/2 681.7

+4oct)

XI TEST POINT

o

VI34 NV RECT 18361

- -3.11?iNN 6

CHROMA

TEST POINT

CHROMA DEL ASSE MAL,

CI

CO3

L301 4.5MC TRAP L

156

_TM!

YOKE PLUG

11501 1 1502 1i.

CHASSIS TUBE ASSY SINO

VI 35 11 V RECT Z 2176

6518 L502 V137 VI 36 , VOOTH DAMPER FOOJS RUT

-5 0501' I. 910R12.CENT

I TURN

R627 6AU4 183GRT55.3162,00

,...7...,::_30 - 05r3 910€0FRIZ CIALS

We 8246. c5e6c. I. 2:311,10Ç£, 5.&N T308 îKV 25V 1 ..,...*2v., 100

- 25MF . :Le 6520 1 a5c5,426AF - 256:

.082 • ' 25V : Re r °801 150T- CI55e2V4

,........ _,... ... 8+ BOOST TO 4R7Ó3K7 e2i 'ci,sieer... 1502 +400V 343M1P 121

YOKE PLUG

1

+190V 1

TEST I POINT 1

ÇliZM

5001 tj.

TEST

qP(C))1(

R-

13 -Y GATE

VI 208 COLOR KILLER

46u6

-2.5V t 190V BIAS

VI 3 8 H V REGULAIDR

221138

•Y

IITESINTT V108A (:)3r41Seerr L161

Y"CATH. FOLLOWER ER

-DC1. IF34

ASSEN8u, -"To - .62 4. 070

Gg.;‘,59

n ---1( 3 58

G172 160 RI

1,4

RI67 1155 5600 69/60

__J

TEST POINT

BURST

6174 -

,, 3300

R601 1000

CONTRAST

V 1 4 CHROMA AMP

684 1102

EILANKNG CHROMA CATH.FOL

TEST POINT

VI 3 9 SUBCARRIER AMP

6436

6330 5000

- 11325

47K R324 6333

- 33K

6178 5000

R176 3300

1

VI ...SA 1 CHROMA OATH. I

FOLLO.VER TEST m ' 6u8 1 POINT

-, VI 20A „„ HUE CONTROL LIMITER

1 1 1/2 638 2.2M R3

6336 r 2-9.5 ,.._ _, 6 2.2M

•• \

L305 C•332 2,

+190V

VI28A HOR1Z 8 VERT CORN

1/2 681.7

VERT DIN CORN PHASE

8462 220K

Rep .0033

8469 8461 22K

HOR UAN

CONY AMP HRIA>RSChDlr =

8273 47K

>20KV H V

REOJLATOR

IOKV 22N STATIC

a OTh COIW

8534 50M

-=

VII9 AUDIO -F

6086

0402 1 ▪ 2 --20 I C-404

180

+200V V-VIDEO

1000

I c201 1 I( 9

.05

VI23 LIMITER 64u6

500QL 5000

2211

R406

10011 150K

V109A Y AMP

¡Era

I L201 3.58

ITRAF cee 12n°

203

+200V

VI24A RATIO DE T

_ _ i6TEI

180 1 I

1 I

1 1

YEE

TEST POINT

XX

01-201 L208

Suc 391.nuo

.05

R202. 6800

1500 >41204 1200

R205 III

+200V

R235 1

0218

- 2. V BIAS •

VIIOA Y AMR

•7

R206 6800

7ve

-1-200V

2211

G413 robe soy

TEST POINT

0207 .05 2

VI 248 1ST AUDIO

6TEI

•

0416 5000T • "'

TONE elifoi

VOLUME TO T P inn

(GRID CKT V11581 R418 22x

* 1-200V

VIII 1.200V RED OUTPUT

1291,7

COMPOSITE BLANKING

II TEST liPe

I I

I Î,13 0 0

VII6 IlS 71 68E 6

c.??? 47

R252 82

;t929504

+190V

COLOR KILLER BIAS

1200V

TEST VII7A R-Y AMP. 1/2 6U8

L251 0254 1800,e/0 D5

0263'1 1 COO

R253 6800

R226 i0K

EN

VII0B G Y 1.MP.

68

10K G-Y RATIO

C264 R2S5 50001 4701,

R-Y GAIN R605 200

C262 C2543

214F I .05 250V

35A

R260 47011

.L254 2100

TEST ,•-•, POINT V

Ian

VI21 8-Y DEI 68E6

7

C- 3▪ 28 100

1

R265 47K

5000/2 5000 —*

R2 r. 82 R267

6800

2 9 0260

TEST POINT

o

8269

4 0K

L252 580 1800.011

0261 .05

R268 6800

TEST POINT mi

+190V

2

VII7B B-7 NAP 1/2 6013

74

r:_

200

65

08 6300 3

47 10( 2W C208

6 's .047

1

-7.

8 214 270

2.2,4

R291 330

• C206c 2544F 25v

0418

I08 IDOOV

414 70K Ii4)8 1

220

VI25 AUDIO OUTR

6v6G1 1403 LSP 401 rr. _ gr3 11.17

+400V +200V

TEST ()POINT

VI i2A D C RESTORER

0211 L203 1'3 6817

1

R2I6

4700 R248

1541 47K

L2Cl2 2401011

I R215 1111

TO PIN I-VI40

180 X MASTER * BRiGHTNES\

R220

±20CN4—le."`""49 7500 2V/

VII8B GREEN OUTPLT

12B/47 t 200V

R224 10K 2W 2216

217 .047 10K

2,

/ IN 0210 C ,e' _.., 27.1/F .0e G, R262 R22I

2214 GAIN

64C

34o _ • R261 " 250v 22x

R227

10K

6270 6800 2W

+200V

7

ICK

2214 0221

*1(-214F

25V

8226

228 270

R222 680

GREEN GAIN

SO&

+200V

Rae

O R234

- 2.2M

P239

3300 P2291 8

C217 510

R244 4-400V 41

low

237 10K 2W

VI22 BLUE OUT

1213H7

0222

.047

R238 22066 330 '3U

• 1.5546

104IF 150V

R24I 4700 2W

P240

CZO6D 50K Tur e600

2W 7+7. 2° 250

VII2B D.C. RESTORER

ii3 6817

Leg

F.M 2W

R23I 11,1

R2I9 22K 1W

TEST POINT

XIX L 20.3

DO 15001

egz2 .9

-LC220

L204 - 240 e

L206 240ph

_T_C225

I 1MF

TO R272, 8256. P257

vi 17A 8 1/2 6BK7

.0- R YAW

00

R-V GAIN

TO 18258, R227 R270

VIi7B 1/2 6E167

4 B-Y ARP TO % R266, 8 2261 R274

i3.6.11,

R-Y AND B-Y AMP EARLY RUN

4200V +400V L R6Il •

100K

G2

10227

8610

GREEN 62

1C2 28

RED GUN

2 3 1

GREEN 9 GUN

7 e

BLUE GUN

GREEN

1011 BRIGHTNESS

VII2C C. RESTORER TEST 1/3 61317 POINT

C224

R243 25V 270

3300

8246 lU

R242 C223 R6I3 BLUE 180 510 5K GAIN

L207 000 , 150911

R608 SOK

R245 I5K

C226

8614 5041

--"TrITUE BRIGHTNESS (GI)

18

VI40 PICTURE TUBE I5GP22

• TO 5K V TO IOKV

STATIC 8 OTN STATIC Et 0714 FOCUS CONY

!OUTPUT CKT, N.Y REG VI38) • TO t2OKV REGULATED

ALL CAPACITORS GREATER THAN I IN 0114F a LESS THAN 1 IN MF EXCEPT WHERE OTHERWISE NOTED

ALL RESISTORS 1/2 WATT EXCEPT WHERE OTHERWISE NOTED

RESISTANCE VALUES IN OHMS K. 1000 M. MEG

ALL POTENT DENOTED IN R600 SERIES

COLOR MODEL 15CL100 (First Production) ce.

Feeikt.ree,e.

et. ;e1

-,Itge=e

6606

G

eetTI-

TOP VIEW

e

TEsT PORI

,t,LE61

TRANSFORMER POWER

T554 in

xge.

1551 POWER

TRANSFORMER

o MAO art

vl.e• 66 iteu,@

¡CDS

MR ORAN up. eankr•

7401

e L159 Oat 6U8 T303 414. nre. gee& L3°3

o R-F TUNER

0163

7s-01152

CI 1

61

C554

C552

@ve.

•••••••••

Ay t • meCLAYA1

BOTTOM VIEW re,

• MARA A

•46 6BL7

TO PIN 6 Of V126

C453

.047

R453 6. 8r.,

8618 4 E.E

111. ONO

+ BOO

VI27A VERT OUTPUT

0454 033 R470

1211 0469

VERT LIN

4454

4619 5000 2473 10014f

R457 0451

100 .01 1451 To 2455

9012 ordIPÉ,4,51 i _ TOC T. ON 8620

C553C R456I. 3014F 470 450V 1W

1> 400V

C5558 2N1F 75V

.1.435A1194

4662 100K

VI27B VERT El/ ...• NG

TO TO 4411 R472

TO 0410

"EARLY" VERTICAL OUTPUT STAGE DIAGRAM

200V

To PINS 2,7,19 OF 9140

LL gs:112,

COLOR MODEL 15CL100 (Second Production) **

FOR TUNERS USED ON THIS CHASSIS, SEE PAGE 94.

OUTPUT CIFICUTS OF RP TUNER r

Co,., I/2 OJI/

L.

70 Pt.le ON SRIOITNESS CRT

4555 82K

NOTE 1. Adjust R630 (high voltage regulator adjustment)

for )5 volt across R541 (390 ohms). In some re-

ceivers R541 is 1000 ohms, In which case ad-

just for 1 volt instead.

2. Z-2176 RECTIFIER IS IDENTICAL WITH

TYPE 2V2 TUBE.

Z-2188 REGULATOR IS IDENTICAL WITH TYPE

6BU5 TUBE.

1 TIO6

VHF TUNER FILS.

V109E1 SYNC CL

sue

63.35

a- 4.4V

4340 470K

60V

ir VI29A

HOP. PHASE DEI ¡taw

-2.2V

113VAC

C507

Giss° ir" I _Lies T ri à List

055

r US3 38.011G 41.25?C 4725TAK

4 70« 450V

221(

+ 400V

V104 TEST IST I-F JAL ,

903V 4' II PONT

+400V

—ass 1.00

A-28V 4524 • 70K

V105 240 I -F «We i43V

2263

W >R520 $1000 SW V

+200V

34)84USI-F I45V V106

- A 1 2.IV

are

_C182 800

IVA 220

AGC If

V 107 4Th ir165V

130V I 5 tea 'be: ....S'Sew:RY t.+051 Crtoso — __. 1,,

LI83Id TI. ir

e1857 s°62800

1 :I7Tó --•

+200V MI

079 — .02 toot

»AMP It II 1502

YOKE PLUG

• 1.

ISEE PWR SUPPLY)

TEST 1. Ciin3" 5". °POINT V108A ASS( Wei

C rit °TES' POINT Y CATH Fal'WFR

!Ewe 170v Lulu Toe tm. (pi '

cLIlS"1.5110 9 ars .05

IX TEST POINT

il

68 111884 SI

•A G174 RI 74 0, 3300

R601

** -r 4.5MC Au»

CONTRAST

+200

RI75 te.

im 3V

V 14 CHROMA AMP

68A r 7302

110V

pit

VI 15A CHROMA CATH. FOLLOWER

ig,333EKO8 2OV

0004 IOKV

V138 V FEGULAIOR 68U5 Z21881

4273 •7K

.208V 3 V 5 LATOK

OKV STATIC

057115ONV

4534 ON ,TEs,

‘-'POIPH EXXIL

p. 3KV TT STATIC DYN R156 FOCUS

POINT 680K +200V

TEST rs POINT 5-,

98

COLOR MODEL 15CL100 (Second Production)

V 11 6 AUDIO I - F r

c40.•ov_ 1401

-2V BIAS

A -I.7V

.05

11233

46V

VI23 LIMITE&„, 6Au6 ••••••••

V109A Y AMP

i6u8126V

103V

+200V

TEs7 •

TEBT H-Y OF T.

XZE 1O-Y AMP

PORT î VII 7A V116

I/2 4U8

10113;17 68E162

COLOR KILLER BIAS

V121 13- 1. DE T 613E6

.4V

4 R2195

R2 82

1 1

A-26 1402

VI 24A RATIO OE T 46T8

VIIOA Y AMP

60,45v

COMPOSITE EILANIONG

Vi 10B GY AMP.

160V m2A7 ifue I65V •c.:504p

4socree e to. el - G•T 'DO RAM' 230V

C264 5000 V .-ute 2.0

TEST POINT XS(

0 -

R269

L252

120(AKIA •••

C26I 047

42•118V ,6001)

TEST 0 4v

+190v

VII7B 11.-T AMP 1/2 6118

R227

• -ro-e

Fan 2W

• +200V

•

20L 0V L /226X'

ti0OV

R233 UC

5613 BLUE 5K

=W.

C4I3 R419 104% 50,

C210 211F

200V

• 37

2W c222

90v .047

34

2-2" 2.3V

R239

3300

VI 248 1ST AUDIO

60V

TO TP ILfl --

(GRID CKT V1158)

4226

3300

V122 OLLIE OUT 12807

OV 71

8240 2.211

WW-84J 235

VI25 AUDIO OuTR

310%4 '1', OTTE N

5416 4,0V

330 440011 Im

LSP 401

+200V

1381 OPOINT

SOV r7-11

VII2A o c REST

1203 u 3 60.17

RD PIN I-V140 F1L

VI I 2B DC RESTORER

1/3 68.17

VII2C DC RESTORER TEST

68.17 POINT

1207

150,,K

2205 1511

- ,446v

224E I

V 2243 270

524 2 IC223 180 r5I0

—G26

1C225

2 V SIAM 87V658 1,

11601 50(

TAIGHTNES5 IGO

*SCOPE SYNCED AT I/2 VERT. FREQUENCY. *11 SCOPE SYNCED AT I/O HOR12. FREQUENCY

WAVE SHAPES TAKEN WITH NORMAL CONTROL SE TTINGS & NORMAL SIGNAL APPLIED.

VOLTAGE MEASUREMENTS ARE IN RESPECT TO CHASSIS WITH A 20,00011/VOLT METER. WITH CONTROLS SET FOR NORMAL OPERATION. NO SIGNAL APPLIED.

A MEASURED WITH VTVIII

+400V

12212 +aoov ,5600 di 5011

too«

TO 3KV STATIC &00/1

FOCUS

IS

W To oOKV STATIC &DIN CONV

B- Y GATE

V140 PICTURE TUBE I5GP22

(OUTPUT CKT KV 14E6 ,03E0

- 51V

••

TO 1.20KV

REGULATED

I 0266

1

I TEST I POINT

I R279 47

£328 30

VI I 6 R-Y PEI. 68E6

6800 R254

VI 21 B- T OE T

68E6

TEST POINT

Hum

CA NC.

ALL CAPACITORS GREATER THAN I IN

& LESS T0AN 1 IN MF EXCEPT

*MERE OTMERwISE NOTED

ALL RESISTORS 1/2 WATT EXCEPT WIER( oTHERwISE NOTED

RESISTANCE VALuES IN cmeAS 14 • 1000

S. NEG

ALL poTun m001E0 IN 2400 SERIES

4.4( C 344

R253 6800

+190V

2268

6800

9 £260

5000 5000

= R267 6800

0631 800

+190V

CAL

8.06 „,„, T304

TOP VIEW

et:L.

m,e1 S -etnerr.:

e-e

•

thilet,Pen. "aeZiNte22

T551

POWER TRANSFORMER

BOTTOM VIEW

T551

POWER TRANSFORMER

- • r ,-£.4•417WI

PARTS LIST, MODEL 24C101


REF. Ho mammal I PART NO. I

C3I1 C406 C457 C517 C605 C601A C601B C602A C60213 C602C C602D C603A C60313 C603C

C603D C604

C606

C104

C106 C105 C108 C118 C465 C5I5

I mf., 50 V 5 rnf., 150V 100 mf.. 150V 500 mf. , 15V

500 mi., 15V 30 mt., 450V 60 mi. , 350V 40 mf., 450V 30 rnf., 350V 15 mt., 350V 30 mf., 25V 30 mi., 450V 15 mf., 350V 30 inf., 150V 25 rill., 25V 500 mf. , 125V IK mf., 6V

TRIMMERS:

RCE-090 RCE-056 RCE-I23 RCE-I26 RCE- 126 RCE- I 33 ACE- I33 RCE-122 RCE-122 RCE-122 RCE-122 RCE- 121 ACE-121 RCE-121 RCE-121 RCE-I25 RCE-106

RCY-065 Rd Y -065 RCY-066

RCY-048 RCY-067 RCY-069 RCY-064

(fine tun's)

Yoke balancing Hor. Drive

1-5 mini. 1-5 mrrif. 20-50 mm!. .6-2. 1 mmf. .8-1. 7 mm!. , 1-12 mini., 110-580 mmf.

CONTROLS


Volume Brightness Contrast Ho, Hor. Vert. Vert. Vert.

Focus Hor. centering Vert. centering AGC 25K

Capacitor 002rnf...

22K, 8.2K, molded

10, 500 voltage

470 ohms, 1K, 15 50 ohm

1800 50-400

2 meg (on-off)

2 meg ION

Hold 100K Sise

Hold I meg Sise 3 meg Lin. 214, 2w.. w. w. 400 ohms, 25 w. ,svw

500 ohms2w 20 ohrn• 2w

WIRE WOUND

R350 R6 It R401 R510

R456 R458 R462 R601 R604 R605 R425

C451,2

R541

R602 R603

R538, 9

R542

R538,9

RRC- 161 RRC-I58 RRC-161 RAC- 160

RRC-I57 RRC-159 RRW- 068 RAW-065 RRW-066

RRW-067 RRC-140

REK-001

RRW-052

RRW-063 RRW-064

RRW-074

RRW-075 RRW-093

resistor network 005mf. , .005m,.. 8.21( ohms, I/2w,

integrating network ohrn•,Globar

sensitive 25 w. , ww

w., w. w. -250 ohmw. w.

ohms, 10 w. , w. w. ohms, w. w.

COILS


L100 L100 L106 L136 L201,2 L203 L206,7 L209 216

L210 L211 400

L2I2, 3 L2I4 L215, 218,20 L2I6 L217

L22I, 404, L504,5 1-401 L402 L403 L500 L501 L600 L601 L602

Choke - .56 oh Choke - .19 oh Trap IF coil & core Choke - 1.4 oh 1st Video IF 2nd Video IF 3rd Video IF & cores Detector

Choke-250 oh. video Choke-110 oh. video

Detector 4.5 mc and core 1.4 uh 5% choke

Choke 31 oh. Trap-4th Video IF 39.75 roc trap coil

Choke 2.2 oh

6. Choke.10uh,hor. Choke- 1000 oh. Choke-220 oh.

10 oh. 1% Hor. osc. & adj. slug Hor. lin. & tuning core Filter choke, 5 hy. Filter choke, 5 hy. Focus

RLI-I44 RU-146 RLI-I59 RI-1-136 RU-133 RLI- I 31 RU-132 RLX-031

RU-I56 RLI-108

RLX-032 RU-139 RLI-142

RLF -024 RU-135

RU-122

R LI-138

RU-155 RU-143 RU-140 RLC-I07 RLD-027 R LF-040 RLF-041 RLF-047

TRANSFORMERS

DESCRIPTION REF. NO, PART 140. I

Vert. Oc. Vert. Output Hor. Output Power, 60 cy, 115V

T450 T451 T502 T601

RT0-103 RT0-097 RTO-104 RTP-310

a

V102

.1-10M tIon Oi_CMAtt•ttl • 4 1933tTON 2.4) RF _

oc

ROO .20

t.'or*

000

•I"

RF TUNER, "D" VERSION

MODELS 17C110, 17C111

(See Page 59.)

•03

5400 /102

vim

CF2 sooT CFI

V103A F.) 9 VI038

¡QM , St OSC ¡IOU ci9

6000

TRANSFORMERS

DESCRIPTION REF. NO. PART NO. STANCOR NO.

Audio Output Yoke

Antenna input Width & ACC c'pl's Ratio detector Video I-F 4th Video I-F Audio I-F 39.75 mc Trap Transformer

T350 DY601 T100 T503 T301 T200 T201 T300 T202 TIO1

RT0-096 RLD-034 RLA-037 RLD-033 RTD-008 RTL-I18 RTL-I19 RTL-120 RTL-I22 RTL-I26

MISCELLANEOUS

REF. 140, DESCRIPTION PART 140.

LS.350 Y200,1

RF Tuner (Early Models) RF Tuner (W Models) Loudspeaker. 12" PM Crystal Diode IN64

RJX-044C RJX-044W 81212D7 IN64

36

Nir Fultt.G

•

MOO 110

UO3

-32 •Ae0831. '1 Gleelk e • •81.-n • re'

Clot

V101 4A64 1ST Re r

4, IF TRAP

40

err 11311

•GC

IL

r3ott

NOV.

VOZ 4C114 00 RF

/If -

P103

2300 toz

f• e

loco

10.0nffl

RF TUNER, EARLY VERSION - MODELS 7C110, 17C111

(See Page 59.)

(See Pages 65 and 67.)

NOT USED

8+ ORANGE LEAD

13+ RED LEAD 250V

6.3 V. AC FILAMENT

A.G.C. BIAS WHITE LEAD

RJX-044C, EARLY PRODUCTION MODELS 200150-151, 240101

NOT USED

B+ ORANGE LEAD

13+ RED LEAD 250V

6.3 V. AC FILAMENT

A.G.0 BIAS WHITE LEAD

B+ 160V 6+250V ORANGE RED

RJX-048WK, •vor PRODUCTION MODELS 20C150-151

RJX-04410, 'Ye PRODUCTION MODELS 200150-151, 240101

'*,FILAMENT

GC WHITE

RJX-0480K. 'CI( PRODUCTION

MODELS 20C150-151

R-F TUNER TERMINAL CONNECTIONS

eon 8.•11 • —

11101 s••• 1ST RF

T100

L..

L

so

•

• •

'urn ezoo

V IOZ

as',

FOS

114,U 1109 1000

ROO 120

r.5

OOTPUT L _

R-F TUNER, RJX-048WK, "WE" PRODUCTION, MODELS 20C150-151


(See Pages 65 and 67.) VOZ 6C.136

Iilplettolà • MACON oar- — — —

4

vtgl

R-F TUNER, RJX-044C, EARLY PRODUCTION, MODE1S 20C150-151 AND 24C101

VI

eon • •01_.*_'0N —

V101 4144 IsTUr r

00 LOO

001 2

UM

U01

C•4

R-F TUNER, RJX-044W, "W" PRODUCTION, MODFA 200150-151 AND 244)101

Vt03A "AT?

33 OSC

1000


1/102

Art see

100

OUTP0T

loo

RADIOS

1

1

840 RADIO PARTS LIST


REF, NO_

C20IA,I1(,C,

CIO0A,B

C2a4,5.11

C12,13

C23,31.

Cl?. 39,

C27, 37,3

00 l4 C9

C28.32

DESCRIPTION

LI 30.15, 30, 30 rn (el

30/400V; 30/350V

TRIMMERS

PART NO.

RCE -019

RCE-032

RCX-012

RCX-024

RCX-025

RCX-026

RCX-027

RCX-028

RCY-011

RCY-017

Puahbutton

3-30;80-130 mmf

33,34. 185-24520-

55;320-400;165-225

mmf.

40. 20-55;475-575;

320-400 mmf.

2-20;185-245;34-70

mm!.

34-70;40-80;5-45 rrinti

3-30 mml

3-30; 3-30 mmf

CONTROLS

DESCRIPTION REF. MO PART NO.

Volume 2 meg.

Tone Control Asey-treble

Tone Control Ae•'y-ba••

SPECIAL

R45AB

R202AE

R201

EEC -000

EEC-027

EEC-026

FtRT - 001

RRW-016

900 ohmm 6W., 150ohrns, 6W

100 ohm., 2W., variable

COILS

REF. 140, DESCRIeTION PART NO.

L3

L4,13

L5,26

L6

L8

LIS

LI1

LIZ

L14, Is

LI6

L17,18,

L23

L24

L201

1Pca•t RF pra. dummy

FM ant. ch.FMI o•c cath

RF pl. ch. &IF wayetrap

SW band R.F plate ch.

SW band RF loading

SW o•c loading coil

B -C o•c shunt tuning

FM cu.. cathode

IF plate

B'ca•t band is.. shunt

19. 20.1, 2. Coil and

mounting bracket as•

For Pushbuttons

FM power line

IF filament

Choke fil. for powe

RLB -009

RLA-012

RLP-008

RLB-008

14LC-017

RLC-015

RLC-014

RLI-005 R LP-005

RLC-016

y

RLX-002

R LI-002

ELF-OS?

ELF-Sb0

TRANSFORMERS


BCPB Antenna

Broadca•t antenna

Broadcast. RF coi

Audio Output

Power, 60 cycles

FM discriminatoi lot IF

2nd IF

Broadcast 3d IF

T:

T2

T3

T202

T201

T7

T4

TO

T6

R LA-006

RIA -009

R LB -006

RT0-026

RTP-035

RTD-001

RTL-017

RTL-022

RTL-043

MISCELLANEOUS


LI

56

P6

J5

P2,7,

P3

P5

J201, 4

P203

J202

J3

P202

J2

52

57

523

55

54

SI

Back and loop ass's,

Pu•hbutton sw. a•siy

Iron core - AM tuning

Connector

Receptacle-for loop

28. Receptacle

Plug-Male phono input

Plug for loop antenna

Receptacle-117V A-C

Plug-on power cable

Recep.(spkr cable plug)

Receptacle -Phono input

Plug-4 Pin arnphenol

for speaker cable

Octal recep& lock ring

Vane tuner (FM coils)

Tuner vane for FM

osc. coil L9

Speaker 12" PM

Phono pick up cartr idg

001 •tylu•

Phono pick up cartradg

003

Switch-Pushbutton

Switch-Squelch

Switch-On-Off

Switch-Treble

Switch-Base

Switcl-i-Band change

RAB -085

RDX-020

REI-006

RJC-012

RJJ-002

RJJ -003

RJP-004

RJP-006

RJP-007

RJP- 008

RJ5-089

RIX-003

RJX-005

RJ X-006

RMM-010

RMM-011

ROP-016

RPX-044

RPX-045

RSP-004 RS5-003

RSV-001

145W-016

RSW -017

RSW -029

818 AND 12K1 RADIO PARTS LIST


REF. 1113 DESCRIPTION PART NO.

C39A

C39B

C39C

C39D

C43

CAB,

C3

C5

C12

30 mf.. 400V

30 rnf., 400V

15 mt._ 400V

20 mfd., 25V

10 mf., 250V

TRIMMERS

RCE-029

RCE-029

RCE-029

RCE-029

RCE-042

RCT-033

RCY-020

RCY-034

RCY-038

C, 0

Capacitor-Tuning

Capacitor

2-20 rnmf.

Air trim. , 1-8 rnmf.

CONTROLS

DESCRIPTION REF. 140. PART NO.

Volume

2.2 ohms

6500

W1REWOUND

ohms

R18

R35

R33.34

RRC-I12

RRN-006

RRT-00 3 ohms & 1220

COILS

REP. HO DESCRIPTION PART NO.

LI, 10

Lls

LZ

L3

L4

LO

L6

L7,9

L8

LI1

L12

L14

Choke

Limiter choke

FM Antenna

Loop Ati•embly

FM R-F Choke

Broadcast Oscillator

FM Choke

FM Coil

FM Oscillator

Choke

FM Power Line Choke

FM Coil

RLI-005

R LI-058

RLI-084

RLL-036

R LB -029

R LC- 066

R LA-012

111.1-057

R LC-067

R LI-005

R LI-044

R LI-007 ,

TRANSFORMERS

DESCRIPTION REF. Ho. PART NO.

Power

Audio Output

-thiecriminators

2nd AM I- F

1.1 AM I- f

FM I- F

T8

T7

T6

TO

T2

TI, 3

4

RTP- 302

RTO- 051

RTD-006

RTL-054

RTL-078

RTL-080

MISCELLANEOUS


JI

SI

52

Phono Jack 8. Plug

Switch-Band change

Switch-Tone control

RJP-010

RSW -073

RSW-074

16K1 RADIO PARTS LIST


REF. NO. DESCRIPTION PART MO.

CIA. B.

C38

C39A,

C43

C. D Tuning cap.

.005mf. 1000V

B.C.D. 30-30 mf 250V

10 mi.. 250V

RCT -043

RCC-059

RCE-039

RCE -068

COILS


1.2

L3

L4

LS

L6, 10,

II

L7

L8

L9

FM antenna coil

Loop assembly

FM R-F coil

B -C Oscillator

Heater choke

Choke coil

FM Oscillator

FM R-F pl o.. cath

Choke in FM lane

R L1-088

RLL-039

R LB-029

RLC-066

RL1-122

ELI-087

RLC- 102

RL1-124

RI.1-044

TRANSFORMERS

DESCRIPTION REF. 140.\ PART NO.

1st I-F AM

2nd I-F AM

let. 2nd 1-F FM

FM Limiter Coil

Output

Power, 60 cycles

Discriminator

T2

TO

TI. 3

T9

T7

T8

TO

RTL- 097

RTL-098

RTL-099

RTL-114

RT0-089

RTP-302

RTD-010

1610 (Concluded)

MISCELLANEOUS

REF NO, DESCRIPTION PART NO

JI

32

J4

PI

P3

R18

R33. 34

SIA,B.

S2A,B,

Phono Jack & female plu RJP-010

Phono power female •oc. R.15-049

Octal connector RJJ-003

Phono plug .ingle pin male RJP-004

Chas pow. plug 3pin male RJC-012 Vol. , cont. 2 ineg tap-

ped at 1 meg.

1220-6500 ohm 9w. ,w.

C. D. Band change sw.

C.D. Tone control sw.

RRC- 141

RRT-003

8.5W-079

ROW -080

820 RADIO PARTS LIST



CIA, B

C39A

C39B

C39C

C39D

C43

C.D. Tuning cap.

I. drum a•sembly

15 mfd., 400V

20 mid. , 25V

30 mfd.. 400V

30 mfd., 400V

10 mfd., 250V

RCT-033

RCE-029

RCE-029

RCE-029

RCE-029

RCE-042

CONTROLS

DESCRIPTION EP. NO PART NO

Volume . 2 meg.

6500 1.1220 ohms, ± 10% .

R18

R33. 31

EEC-074

RRT-00 3

COILS


LI, 10.

L2

L4

LO

L6

L7.9

L8

LIZ

1,13

II. Choke

FM antenna choke

FM R-F

B-C oscillator

FM o•c. grid choke

FM choke

FM oscillator

FM power line choke FM limiter choke

RL1-005

RLI-056

RLB-027

RLC -066

RLA-012

R LI-057

R LC-067

ELI-044

R LI-058

TRANSFORMERS

DESCRIPTION REF. 140, PART 110.

Output

Power (60 cy. )

1st FM IF

2nd FM IF

3rd FM IF 2nd IF (AM)

1st IF (AM)

r), sc rimi na t or

T7

TO

TI

T3

T4

TO

T2

TO

RT0-051

RTP-061

RTL-080

RTL-080

RTL-080

RTL-054

RTL-078

RIO-006

MISCELLANEOUS

REF. 440, DESCRIPTION PART NO.

J1

PI

P2

P3

P1

SIA,13.(4.

52A,B,r.

Jack - ,Mono Jack

Plug, phono input

Plug. phono motor

Power plug, 3 pan male

Plug, octal base

D. Switch, band change

D. Switch, tone control

and power switch

RJP-010

RJP-004

RJP-003

RJC-012

RJJ-003

RSW-059

RSW-048

IS ,S ,Se

if *r14-11' 11

AS

840 RADIO

(See power supply Page 102.)

ellheitevioswif saw

c>:c7.1 § a

RADIOS

careen. 111 -44111

•••

- - -.7r1 119

.90

9,1

low

818 AND 12K1 RADIO

VI

ta•

l

te Mete V3.011•4

L r-

Vie _

_

•••

--, ell.410•••••1011

ernMte NO10 441.

9 - - •S 140

I '1 11••••• e

•

•••

U..

•••

.9* hot

•••

141110 0119110 14.11491

•••

Owe

•à•

tle

t.

età,

011011 11.1•01•1-1•1•••

•

LIMO

••••

•••••1

—•

0.014

•••••

•••

840 RADIO POWER SUPPLY (See main radio schematic previous page.)

V.11,

•••11

110

eft

*I SIP

16KI RADIO IF •114.1

14 61 . r

U.

1.1111,1111 14 WA

rILVIIMIgjee

-i-urreirtieWnite .",= 1 re eve

-at

u

1.00911 01414T re.erest

411

!MT

011

I MO

•e• à

t:

«400

•

••••,

ant»

gZill."1. 'tee'

4,

NY 1t1:1

‘1•*f

1.110041.

820 RADIO

„.-Vret MOW ----

••••••

.00 \MVO,

ea0..91111

eTte 00. • TA- V

• 010111 WilT04

-

1•0 00 00.11 0011000. # >•0409 011là• 4140•911101 Web 4000149 10 TV

14100 S. tea VX4 to..

9r

10011 1100GT

•01. • C000 4. 419

RADIO POWER SUPPLY SCHEMATIC

11005 11410

:12114 44 MOM

„...401104

Meet

aide

Ire Fa

102

MODELS 121(1, 818, 820.

RADIOS

DIAL CORD STRINGING

I. VETLOVM

MODEL 16K1

MODEL 840

SOCKET VOLTAGE DIAGRAMS

BOTTOM VIEW OF CHASSIS

A

CATHODE t 265

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106


In most cases the change can not be accurately identified

with the serial number of the chassis. The order of listing

below does not indicate the chronological order of the

change.

1. POWER TRANSFORMER, T14 ond V23-The original

transformer, T14, supplied, gave insufficient B plus voltage

(385 volts) when using a Type 5Y3GT rectifier tube, V23.

This resulted in a low anode voltage of 7500 volts for the

picture tube. To increase this voltage, a Type 5V4G tube

was substituted for the 5Y3G tube, V23. At approximately

serial number 2500, a new transformer T14 having Stock

No. RTP-040 was substituted, which gave the correct B

plus voltage of 415 volts when a Type 5Y3G tube was used

as V23. This B plus voltage gives an anode voltage to the

picture tube of 8500 volts.

2. TELEVISION TUNING TRIMMER C112-For approximately

the first 2000 receivers, the tuning trimmer C112 did not

quite have the correct tuning range, making it necessary to

add a fixed 10 mmf. capacitor C114 in series with it. The

shunt capacitor C102 hod a value of 4.7 rnmf. Later pro-

duction trimmer, C114, has the correct range. With this new

value of trimmer, the shunt capacitor C112 was changed to

6.0 mmf. This shunt capacitor in a few receivers was

merely a 5.0 mmf., while in most it will consist of two

capacitors; a 5 rnmf. and a 1.0 mmf. capacitor in parallel.

The early production trimmer has a 1/4 inch 0.0. shaft,

while the late production trimmer is slightly larger and has

a 3,16 inch 0.0. shaft.

3. TONE CONTROL, R69B-The tone control R69B, on early

production receivers was connected in series between the

Volume Control R69A, movable arm, and C39. C72 was a

680 waif, capacitor from C39 to ground. Hum in the audio

dependent upon the tone control setting necessitated a re-

vision as shown in the schematic.

4. TUNED CIRCUIT, L20 and C89-The capacitor, C89,

was originally 240 mmf, and the coil, L20, was fixed-tuned

and wound on a resistor form. This was later changed to

1000 mmf. ond the coil turns were reduced and made var-

iable, resulting in a high Q circuit. This change permitted

adjustment of the trap.

5. RESISTOR, R87-This resistor was changed from 100,000

ohms to 330,000 ohms to prevent excessive beam current in

the picture tube, V8. This excessive beam current caused

the high voltage to be reduced when the Brillionce control

was advanced to maximum with the result that the control

reduced brightness at end of its clockwise travel instead

of increasing brightness.

6. RESISTOR, R47-This resistor has been changed from

Si watt to a 1 watt size. In some cases, the original /4 watt

resistor dissipation is exceeded, especially if the Width

control iron core is nearly all the way in the coil, resulting

in a reduction in the resistance value. This reduced resis-

tance changes the waveshope across C29 so much that the

horizontal multivibrator may lock in at half frequency or not

lock at all. It may also result in the resistor burning out.

7. CHANGE IN HORIZONTAL OUTPUT TRANSFORMER,

79-A new design horizontal output transformer, T9, was used

in late production receivers. This may be identified by the

fact that it has two windings instead of the single winding

design, as characterized the early production receivers.

When the late production transformer is used, a 3900-ohm,

1-watt resistor must be added in series to the existing 6800

ohm, 1-watt resistor, R47. Do not use o single 1-watt resis-

tor for this. The capacitor, C66, should be returned to

ground when the new type transformer is used.

8. HORIZONTAL MULTIVIBRATOR CATHODE SWITCHING

After the first 150 receivers were built, a shorting contact

was added to the filament wafer of the Station Selector

switch so as to stop the horizontal multivibrator os soon as

the Station Selector was switched to "Rodeo" position.

This connects the multivibrator cathode to ground through

the filament circuit when switching to "Radio" so that

"birdies" are not heard on the broadcast band as the tele-

vision tubes cool off after switching from television to

radio reception.

9. SCREEN RESISTOR, R79-This resistor was changed

from on original 47,000 ohms to 33,000 ohms. This reduces

the operating DC voltage on the plate of V7, and gives

greater brightness.

10. ADDITION OF C21-A fixed 10 minf, mico capacitor, C21,

was added across C10 so that the trimmer C10 would peak

at the center of its range.

11. CHANGE IN R63-The 330,000 ohm resistor, R63, was

changed to 220,000 ohms so that the Vertical Hold control

will operate near its mid-adjustment position.

12. REMOVED OF R95-To correct a transient which appear-

ed in the vertical retrace as a white line at the top of the

picture, the 2200 ohm resistor, R95, in series with capa-

citor, C37, was removed. The potentiometer, R58, was re-

connected as o variable resistance as shown on the sche-

matic.

13. VALUE CHANGE OF C52-The original capacity of C52

was 47 mmf. To improve vertical interlace, this capacitor

was changed to 240 mmf.

14. ADDITION OF TUNED CIRCUIT, L21 and C91-A 15.75

kc tuned circuit was added to the cathode of the horizontal

multivibrator, VII. This stabilizes the horizontal AFC

circuit to the extent that it prevents picture wiggles on

noise pulses and echoes. With this addition, the 240 minfd.

capacitor. C56, should be changed to 150 mmf. and the

150,000 ohm resistor, R40, should be increased to 330,000

ohms. This prevents a white line at the left-center of the

picture which may result with installation of L21-C91.

With addition of L21, the capacitor, C30, was changed from

a 40 mfd to a 1.0 mfd, and C92 was changed from 1.0 mfd to

a .05 mfd.

15. CONNECTION OF PRIMARY OF T11-On early product-

ion receivers the primary of T11 was connected to a mid-top

on choke Lb. This connection caused a resonant condition

to develop whcih affected the lower television bands. This

was corrected temporarily by shunting a 47 mmf. capacitor

between the midtap of L10 and ground. Later the primary of

TI1 was connected to the ¡unction of L10 and C101 as

shown on the schematic.

PRODUCTION CHANGES MODELS 805, 8C/,

£07 AND 809

(Early, T, S. U and W Versions)

1) CHASSIS MARKINGS: As production of these models

proceeded, major production changes were identified by

stamping a large letter on the chassis front apron. These

letters are "T", "S", "U", or "W".

"T" VERSION: Change from a molded type horizontal out-

put transformer T311 to a ceramic iron core type transformer

T312. (See production change No. 9).

"S" VERSION: In addition to the "T" change a larger

picture opening was incorporated into the cabinets. Chas-

sis are marked "S". (See production change No. 16).

"U" VERSION: This change changed to a new Horizontal

Automatic Frequency control and Automatic Gain control

circuits. "U" also incorporates the "T" version changes.

"W" VERSION: This letter "W" is used to identify the

change from a 6AU6 second RF amplifier (V2) to a 6AG5

second RF amplifier (V2). (See production change No. 15).

"T", "U", and "S" versions changes are also included in

"W" version.

Note chassis marked BCF in addition to "U" or "W" hove

the broadcast filter added in the antenna circuit os des-

cribed in Production Change No. 10.

2) FOLD-OVER ON "T" VERSION RECEIVERS: On "T"

versions of these receivers, fold-over at the left edge of the

picture when the horizontal hold control is set for best

synchronization has been corrected in late production "T"

versions by the following:

(a).Change R334 from 220K, to 560K, )4 watt resistor, Cat.

No. URD -115.

(b) Connect a 12 mmf., 880 v., mica capacitor, C336, from

the junction of R334 and C330 to B Cat. No. RCU-286.

(c) Disconnect R315 from 277 volt, B plus, and reconnect to

the B plus boost voltage at the ¡unction of C322 and L315.

(d) Change C315 from 68 mmf. to 220 mmf., mica, Cat. No.

UCU-1036.

3) AUDIO INSTABILITY (IN EARLY "T" VERSION RE-

CEIVERS): This appeared as tweets when operating the

focus control at maximum clockwise rotation and has been

cured in late production by reconnection of the 25L6GT

(V19) screen by-pass capacitor, C367. On "T" version

receivers, C367, ground connection was removed from the

B — bus and connected to the junction of R352, R353, and

5341.

(4) TO IMPROVE THE VERTICAL LINEARITY: R299 has

been changed from 3K to 2.2K, 1 w. resistor. This change

also centers the operation of the vertical linearity control.

(5) HORIZONTAL LINEARITY "T" VERSION MODELS:

A transient oscillation which appears os wiggles on vertical

running lines at the top one-half inch of the picture may be

removed by shunting C324 (0.47 mfd.) with o 1200 ohm, )4w.,

carbon resistor (R339). C324 is the capacitor in series with

the horizontal deflection coils.

(6) IMPROVEMENT IN VERTICAL SYNC-EARLY AND

"T" VERSIONS CHASSIS: To improve vertical synchroniza-

tion under noisy conditions such as encountered in "fringe"

areas, the following changes have been mode in production:

(a) Short C265 with a bus wire.

(b) Remove V8-A grid resistor, R274 (2.2 meg.).

(c) Change value of R280 in plate circuit of V8-A from 8200

ohms to 39,000 ohms, Sive., carbon resistor, Cat. No. URD-

087.

(d) Change value of C314 (couples V11-A to V11-B) from

5000 mmf to 1000 mmf., mico, Cat. No. UCU-052.

(e) Change the value of R311 (in grid of V11-B) from its

2.2 meg to 470,000 ohms, )4w., carbon URD-113. R311

should be reconnected between pin 1 and pin 3 of V11-B.

(f) Change value of C293 (grid of VIO-A) from .001 mfd.

to a 150 mmf. mica capacitor, Cat. No. UCU-I532.

(7) TO IMPROVE THE RF STABILITY WHEN OPERATING

ON CHANNEL NO. 2 IN WEAK SIGNAL AREAS: The fol-

lowing changes have been made in late prreivction. When

operating on Channel No. 2 with the contrast control near

maximum clockwise, the picture may become streaked or

blacked out entirely, due to regeneration. This may be cor-

rected as follows:

(a) Replace or short out L206 with a piece of bus wire No.

20 or larger.

(b) At the rear of C213, the tuning capacitor is a terminal

board mounted on the head-end unit. From the ground lug of

this terminal board, connect a 5000 mmf. capacitor, C208,

Cat. No. RCW-3014, to the main chassis. This main chas-

sis ground may be mode by adding a ground lug under the

self-tapping screw which holds the vertical sweep output

transformer.

(8) IMPROVED STABILITY OF HORIZONTAL SWEEP

GENERATOR IN EARLY AND "T" VERSION RECEIVERS

A tuned circuit, L316, Cot, No. RLD-014, and capacitor

C329, Cat. No. UCU-2568, is tuned to 15,750 cycles and

will stabilize the blocking oscillator to reduce the effects

of noise on sync.

For adjustment, see installation control adjustments, fly-

wheel circuit.

L316 and C321 ore added in the B plus supply of V21B as

shown in schematics for "Early" and "T" versions.

L316 is mounted at the rear of the chassis at the left-hand

side, as shown below.

(A) Special U and W Controls

(9) NEW TYPE TRANSFORMER ("T" VERSION): in lote

production Model 805, 806, 807 and 809's, a new type horiz-

ontal sweep output transformer was employed. The new

transformer uses a ceramic iron core. All receivers using

this core will be identified by a large "T" ink-stomped on

the chassis front apron. Receivers ink-stamped "U" "S"

or "W" on the chassis front apron have this new transformer

and other new developments incorporated, as explained

below.

On early production receivers, u 25Z6GT damper tube was

used. Because of the higher peak inverse voltage of this

new transformer, it is necessary to use a 25W4GT damper

tube which has a higher peak inverse voltage rating.

(10) BROADCAST INTERFERENCE: To eliminate inter-

ference from strong broadcast signals, which appear as RF

interference in the picture, choke L259 was removed and

B — bus was connected to B — bus directly with a short

piece of bus wire. A broadcast filter has been added in the

antenna input circuit, and is connected as shown on the

schematic diagram for "U" and "W" versions.

(II) NEW HORIZONTAL AUTOMATIC FREQUENCY CON-

TROL CIRCUIT AND AUTOMATIC GAIN CONTROL CIR-

CUIT ("U" AND "W" VERSIONS): Chassis incorporating

this change can be identified by the large "U" or "W"

Ink-stamped on the chassis front apron. (See schematic).

(12) VOLTAGE DOUBLER CHANGE: "Early" production

receivers used a full-wave voltage doubler type of trans-

forrnerless power supply. This is shown in schematic.

"T" versions and "U" and "W" versions were changed to

a half wave voltage doubler type of circuit shown in sche-

matic diagrams.

(13) SHIPMENT WITH PICTURE TUBE INSTALLED: Late

production receivers were shipped from the factory with

the picture tube installed. Another picture tube mounting

strap was added on these models to secure the picture tube.

Though this extra strop does not have to be removed when

the receiver is installed, it is not necessary to replace it

when the picture tube has been removed or replaced, un-

less the receiver is to be reshipped.

(14) LOW SENSITIVITY, EARLY PRODUCTION: A few

early production models were built with the plate of V6

PRODUCTION CHANGES (3rd video IF) amplifier connected to B plus supply through

a 10K resistor, R278, or to B plus supply through R278

and choke L248 in parallel

To improve the sensitivity of these models, R278 should

be removed and pin 5 of V6 should be connected to the

¡unction of R253, C253, and R252 through choke L248.

Catalog number for L248 is RLF-027.

(15) SECOND RF AMPLIFIER ("W" VERSION): Early

production chassis used a 6AU6 second RF amplifier V2.

This tube was replaced by a 6AG5 tube in later production.

Connections for V2, 6AU6, "U" versions are the same as

connections for V2, 6AU6 of "T" versions, on schematic.

Chassis with (V2) second RF amplifier 6AG5 are stamped

"W".

(16) CHANGE TO LARGER PICTURE ("S" VERSION):

Models 806 and 809 stamped with a large S on the chassis

front apron indicate a cabinet change from a picture size

815" wide, by 6 3/8", to a picture size of 9W' by 7)4"•

Model 807 changed to 9)5" x 7)5" picture opening at the

same time the "W" changes were incorporated. The left

and right sides of the new large picture are now arcs of a

circle 9)5" in diameter.

(17) FLUTTER ON STRONG SIGNALS "U" AND "W"

VERSIONS: intermittent flutter (similar to low frequency

airplane flutter) of picture brilliance on "U" and "W" ver-

sions, in very strong signal oreas, which requires the con-

trast control be set at minimum, has been corrected in

production as follows:

Change C255 from o .05 mfd. capacitor to a .5 mfd. capa-

citor, 200 v., Cat. No. RCC-016. This capacitor is in the

automatic gain control circuit.

Change R280 plate dropping resistor of V8A from 39,000

ohms to 18,000 ohms, h watt, Cot. No. URD-079.

(18) LINEARITY CONTROL ("U" VERSION): "U" version

chassis were built with the potentiometer R402 acting as

both linearity and drive control. L315 linearity control was

removed and the junction of T312 terminal one and R303

was connected directly to the junction of C4I2, R303 and

pin 3 of V15. Capacitor C335 was removed.

On "W" versions, L3I5 and C325 were added to give better

linearity control and are connected as shown in schematic.


1. TUNING DRIVE: The early production rubber bushing on

the tuning shaft used to drive the tuning condenser caused

some slipping and backlash. This has been replaced by a

new rubber bushing, Stock No. RMW-054, to correct the

trouble. The early production bushing hod Stock No. RMW-

046.

2. HI-VOLTAGE FAILURE: Failure of insulator posts used

for mounting the 8016 1B3GT tube socket was caused by

corona leakage and eventually caused falling off of the

high anode voltage. These early production posts were

textolite Stock No. RII-014. These should be replaced by

ceramic posts, Stock No. RII-017.

3. CONTRAST CONTROL TOO CRITICAL: In strong signal

strength areas, it required adjustment at o critical point of

the contrast control taper. This was corrected by changing

the voltage applied across the contrast control os follows:

Change R74 to a 82,000 ohm resistor, R50 was one resistor

of 120,000 ohms, this now becomes two resistors of R50

82,000 ohms and R108 33,000 ohms with the bias for the

contrast control taken off at the junction of these two re-

sistors. See schematic.

4. ADDITION OF RECTIFIER TO OSCILLATOR FILAMENT:

When the filament of the Type 12AT7 oscillator tube section

was operated on 6.3 volts AC, hum modulation was intro-

duced which become objectinnable in some cases on the

high channels. This was eliminated by operating the fila-

ment of V2A on DC, which was provided by rectifying the

filament voltage by a full-wave selenium rectifier, SRI

(GE Cat. No. RER-003) and filtering the output by a 2000

mfd. capacitor, C102 (GE Cat. No. RCE-083). The choke L6

(GE Cat. No. RLI-005) and capacitor C101 (GE Cat. No.

RCW-3014) were added to eliminate the possibility of any

regeneration at the RF frequencies being introduced by this

filament lead.

5. DRIFT OF HORIZONTAL HOLD ADJUSTMENT: The

very early production receivers showed a tendency to worm

up drift in reference to the Horizontal Hold Control. This

condition was corrected by the following component changes:

(1) Removed R53 (10,000 ohms) resistor from across plate

winding of T16. This requires removal of shield can on

T16.

(2) Remove C46 (120 mmfd) which is in parallel with C49.

(3) Replace R50 (270,000 ohms) with two resistors in series.

One resistor is R50 82,000 ohms from trimmer C49 to ¡unc-

tion. Another resistor is R108 33,000 ohms and will go

from ¡unction to ground. R74 (see 7) will come off junction.

(4) Change R52 (100,000 ohms) to 47,000 ohms.

(5) Change R51 from 3.3 megohm, h watt rating, to same

value 1 watt rating and mount resistor on full length leads

so as to have resistor body hang vertically as far down

away from chassis as possible. Mounting of this resistor is

very important.

(6) Change R48 (560,000 ohms) to 1 rnegohm; All of the

above mentioned resistors are critical as to temperature

coefficient and should be ordered from General Electric re-

placement stock.

(7) Change R74 (470,000 ohms) to 82,000 ohms.

(8) Change R44 from 82,000 ohms, hw., to 2 watt rating.

(9) Change R45 to 100,000 ohms, 1 watt (Cat. No. URE-097),

and reconnect R45 to high B plus (360v.) as shown on

schematic.

(10) Change R47 to 24,000 ohms, h watt (Cat. No. URD-

1082). After these changes are incorporated, it will be

necessary to reset the horizontal blocking oscillator fre-

quency. Following is the procedure:

a. Connect a VTVM to measure the voltage from the ¡unction

of R74 and potentiometer R73 to ground.

b. Tune the receiver to any suitable television signal.

c. Set the front panel Horizontal Hold Control R46 to the

approximate mm-point of its resistance range. Then adjust

the iron core of the blocking oscillator ri,i1 T16 and the set-

ting of the horizontal frequency control trimmer C49 to

bring the picture into horizontal sync and to develop approx.

-12 volts across the contrast control as measured on the

VTVM. The iron core adjustment and the trimmer setting

are interlocking and, therefore, it is necessary to adjust

each of these controls in turn to bring the picture in sync

and also obtain - 12 volts.

d. At the completion of the above adjustments the range of

the front panel horizontal hold control should be checked.

The sync range should fall in the approximate center of the

control and it should be possible to throw the circuit out of

sync by turning the control to either end of its range. Re-

ceivers having the above changes made con be identified by

noting that red glyptal cement has been applied on one of

the nuts holding the shield can of T16.

6. VIDEO "TWEET" RESPONSE ON CHANNEL No. 7: A

cross-hatch pattern on Channel No. 7 set up by local radia-

tion from the 8th harmonic of the 21.9 mc (early production)

sound is cured as follows:

(1) Change ground connection of C4I (.01 mfd.) from pin

No. 1 of V6 socket to the ground terminal on the adjacent

terminal board.

(2) Add copper ground strap to pin No. 5 of V18 socket with

chassis ground as close to socket pin as possible.

(3) Change ground connection of C69 (5000 inmf.) from pin

No. 1 of V18 socket to pin No. 5 of some socket.

(4) Change value of R78 (56,000 ohms) to 150,000 ohms.

7. CHANGE IN 2ND AND 3RD VIDEO IF TRANSFORMER:

The plate winding of the video IF transformers, T12 and

T13, has been increased in inductance to compensate for o

recent lowering in the plate capacity of the Type 6AU6 tube.

In early production receivers where the plate winding in-

ductance is low, if a low capacity 6AU6 tube is substituted,

the 26.3 mc marker will ride up too far on the selectivity

curve. This condition can usually be corrected without

changing the IF transformer by pushing the plate lead in

this winding close to the coil form so as to increase the

distributed capacity and thus compensate for the tube ca-

pacity. In the lote production receivers with the higher in-

ductance IF transformers, if a high capacity Type 6AU6

tube is used, it may be necessary to spread turns on the

plate side of the transformer to affect proper tuning.

8. V2A OSCILLATOR DRIFT: The tube socket for tube V2

originally specified tube socket Stock No. RJS-I20. This

should be changed to read Stock No. RJS-127. This change

in socket composition reduces warm-up drift considerably.

9. VIDEO AND SYNC AMPLIFIER LIMITING: On some re-

ceivers it was not possible to drive the picture tube to full

contrast before the sync pulse would be limited with a re-

sultant loss in vertical and horizontal sync. This was cor-

rected in production by the following changes:

(1) Change R21 to 5600 ohms, )5 watt.

(2) Add resistor RI09, 1000 ohms, h watt, between Pins 6

and 7 of VII after removing the bus wire connecting these

pins.

10. VERTICAL HOLD CONTROL RANGE: To give better

vertical hold control range and sync, the following changes

were made in production.

(1) Remove R38 and connect R37 to Pin 2 of VII as shown

in the schematic.

(2) Change C39 to a .05 mf. 400 volt capacitor.

(3) Change C40 to a .001 mf., 400 volt capacitor, and con-

nect between ¡unction of C37 and R36, and Pin 1 of V9.

(4) Change C37 and C38 to .01 mf., 400 volt capacitors.

These were originally .01 mf., 200 volt capacitors.

(5) Disconnect the B plus from Pin 2 of VII. Connect a re-

sistor R111, 1600 ohms, Y2 watt, from pin 2 of VII to pin 4

of V10, as shown in the schematic.

(6) Remove Capacitor C41, .01 mf., 200 volt, from ¡unction

of R28 and R29. Connect a capacitor C41, .001 mf., 400

volts, from pin 4 of V9 to ground.

(7) Change Resistor R28 to 82,000 ohms, h watt.

(8) Change C30 to a .002 mf., 600 volt capacitor.

(9) Change C31 to a .062 mf., 600 volt capacitor. When these

changes ore mode, it is necessary to check the vertical

hold control to see whether it is possible to go through the

60 cycle speed. This 60 cycle speed setting should be at

least 70 degrees from either end of the control. If the 60

cycle point is closer than 70 degrees from the CCW end of

the control, or if the 60 cycle point cannot be reached at the

CCW end of the control, a resistor, R110, 24,000 ohms, )5

watt, should be inserted between R28 and R29 and the con-

trol rechecked. It should always be possible to pull the

multivibrator out of sync at the maximum CW end of the

control, but it may not always be possible to pull it out of

sync at the CCW end of the control.

II. BLOOM: This is caused by a difference in modulation

level of the television signal, such as is encountered when

switching from one television camera to another. This has

been corrected in the Model 810 receiver by the following

changes:

(1) Connect o 270,000 ohm, h watt, resistor, R112, between

the yellow lead connected to pin 11 of the picture tube and

the center top of the brightness control, R95.

(2) Connect a .1 mf. capacitor, 600 volts (C102) between

yellow lead connected to pin 11 of picture tube and the

¡unction of R95 and the red B plus line.

12. AUDIO IF FREQUENCY CHANGE TO 21.8 MC: All

Model 810 receivers marked with II in a circle in green ink

on the chassis and on the carton, and subsequent Model 810

receivers will be aligned to 21.8 mc. This measure was

taken to eliminate the video interference of o strong Wash-

ington, D.C. FM station operating at 93.9 mc beating with

the Channel No. 4 video carrier (67.25 mc), and forming an

IF frequency which showed on the screen as o herringbone

pattern.

PRODUCTION CHANGES MODELS 817 & 821

("T", "S", "U" & "W" VERSIONS)

NOTE: The circuit of the receiver passed through various

stages and in order to easily identify the circuit contained

in an individual chassis, it was marked with a letter ac-

cording to the following designations:

"T" - Early production

"S" - "T" version plus large picture frame.

"U" - "T" version plus incorporation of a new efficient

AFC circuit and AGC.

"W" - "U" version plus replacement of 2nd RF amplifier

tube 6AU6 by a 6AG5 tube.

1) FOLD-OVER ON "T" VERSION RECEIVERS: On "T"

versions of these receivers, fold-over at the left edge of the

picture when the horizontal hold control is set for best

synchronization has been corrected in late production "T"

versions by the following:

a) Change R334 from 220K, to 560K, h watt resistor, Cot.

No. URD-115.

b) Connect o 12 mmf. 880 v., mica capacitor, C336, from

the junction of R334 and C330 to B-, Cot. No. RCU-286.

c) Disconnect R315 from 277 volt, B plus, and reconnect to

the B plus boost voltage at the junction of C322 and L315.

d) Change C315 from 68 mmf. to 220 rnmf., mica, Cat. No.

UCU-1036. 2) TO IMPROVE THE VERTICAL LINEARITY: R299 has

been changed from 3K to 2.2K, 1w. resistor. This change

also centers the operation of the vertical linearity control.

3) HORIZONTAL LINEARITY "T" VERSION MODELS: A

transient oscillation which appears as wiggles on vertical

running lines at the top one-half inch of the picture may be

removed by shunting C324 (0.47 mfd.) with a 1200 ohm, hw.,

carbon resistor (R339). C324 is the capacitor in series with

the horizontal deflection coils.

4) IMPROVEMENT IN VERTICAL SYNC - "T" VERSION

CHASSIS: To improve vertical synchronization under noisy

conditions such as encountered in "fringe" areas, the fol-

lowing changes hove been made in production:

a) Short C265 with a bus wire.

b) Remove V8-A grid resistor, R274 (2.2 rneg.).

c) Change value of R280 in plate circuit of V8-A from 8200

ohms to 39,000 ohms, hw., carbon resistor, Cat. No.

URD-087.

d) Change value of C3I4 (couples V11-A to V11-B) from

5000 mmf. to 270 mmf. mica, Cot. No. UCU-052.

e) Change the value of R311 (in grid of V11-B) from its

2.2 me g. to 470,000 ohms, hm, carbon URD-I13. R311

should be reconnected between pin 1 and pin 3 of V11-B.

f) Change value of C293 (grid of VIO-A) from .001 mfd.

to a 150 mmf. mico capacitor, Cat. No. UCU-1532.

5) TO IMPROVE THE RF STABILITY WHEN OPERATING

ON CHANNEL NO. 2 IN WEAK SIGNAL AREAS: The fol-

lowing changes have been mode in lote production. When

operating on Channel No. 2 with the contrast control near

maximum clockwise, the picture may become streaked or

blacked out entirely, due to regeneration. This may be cor-

rected as follows:

a) Replace or short out L206 with a piece of bus wire No.

20 or larger.

b) At the rear of C213, the tuning capacitor is a terminal

board mounted on the head-end unit. From the ground lug

of this terminal board, connect a 5000 mmf. capacitor, C208,

Cat. No. RCW-30I4, to the isoin chassis. This main chassis

ground may be made by adding a ground lug under the self-

107

PRODUCTION CHANGES

108

tapping screw which holds the vertical sweep output trans-

former.

6) IMPROVED STABILITY OF HORIZONTAL SWEEP GEN-

ERATOR "T" VERSION RECEIVERS: A tuned circuit,

consisting of L316, Cat. No. RLD-014, and capacitor C329,

Cat No. UCU-2568, is connected in series with the B plus

return of the blocking oscillator transformer, L313, and is

tuned to 15,750 cycles. This will stabilize the blocking

oscillator to reduce the effects of noise on sync.

8) BROADCAST INTERFERENCE: To eliminate interfer-

ence from strong broadcast signals which appear as RF

interference in the picture choke L259 was removed and

B -- bus was connected to B — bus directly with a short

piece of bus wire. A broadcast filter has been added in the

antenna input circuit (RLX-027), and is connected as

shown on the schematic diagram.

9) NEW HORIZONTAL AUTOMATIC FREQUENCY CON-

TROL CIRCUIT AND ATUOMATIC GAIN CONTROL CIR-

CUIT: Chassis incorporating this change can be identified

by the large "U" ink-stamped on the chassis front apron.

10) SHIPMENT WITH PICTURE TUBE INSTALLED: Late

production receivers were shipped from the factory with

the picture tube installed. Two blocks were added on these

models to secure the picture tube. Though these blocks do

not have to be removed when the receiver is installed, it is

not necessary to replace them when the picture tube has

been removed or replaced, unless the receiver is to be

reshipped.

11) SECOND RF AMPLIFIER ("U" VERSION): A few

early production "U" version chassis used a 6AU6 second

RF amplifier V2. This tube was replaced by a 6AG5 tube

in later production. Connections for V2, 6AU6, early

production "U" versions, are the some as connections for

V2, 6AU6 of "T" version, as shown on schematic diagram

for "T" version.

12) PICTURE CENTERING: Receivers using the large

size mask might encounter centering difficulties. The

picture cannot be centered to the right sufficiently far

without neck shadowing. To remedy this condition, the

following circuit change is suggested which will pass

sufficient DC current through the horizontal deflection

coils to move the picture about one inch to the right.

Disconnect the end of resistor R268 (at plate of V8-B) that

ties to B plus and then reconnect it to the junction of C324

and the horizontal deflection coil. This coil is placed

within the current path from B plus to the resistor R268

and the addition of this DC current helps to correct the

centering defect.

13) PICTURE TUBE SHIPPING HARNESS, MODEL 817:

The pix tube is pressed against the mask by means of a

cable harness. This is made of stainless steel and may

become magnetized sufficiently so as to affect the picture

by shifting or distorting it. In order to prevent this un-

desired effect, it is recommended that this cable harness

be removed and discarded at the time that the receiver is

installed.

14) SWIVEL FOCUS COIL, MODEL 821: A new deflection

yoke and focus coil assembly is incorporated in the "U"

and "W" versions of this receiver. The focus coil is fasten-

ed to a bracket which can be moved in any direction with

respect to the neck of the picture tube. This permits more

flexibility in centering and focusing the picture.

15) FLUTTER ON STRONG SIGNALS ("U" & "W" VER-

SIONS): Intermittent flutter (similar to low frequency air-

plane flutter) of picture brilliance on "U" and "W" ver-

sions, in very strong signal areas, which requires the con-

trast control be set at minimum, has been corrected in

production as follows:

Change C255 from o.05 mfd. capacitor to a .5 mfd, capacitor,

200 v., Cat. No. RCC-016. This capacitor is in the auto-

matic gain control circuit.

Change R280 plate dropping resistor of V8A from 39,000

ohms to 18,000 ohms, )4 watt, Cat. No. URD-079.


I. AUDIO IF REGENERATION: Audio regeneration which

causes a click in the speaker as the tuning control is tuned

through the station can be eliminated by the use of a 5000

ininf capacitor, RCW-30I4, across the audio IF B plus

lead. This capacitor is connected between the B plus and

ground terminals at the terminal board located between the

limiter tube socket, V18, and the discriminator transformer,

T 19.

2. AUTOMATIC GAIN CONTROL (ACC): This circuit is

used to make for greater ease in operation, os it eliminates

to a large extent the necessity of changing the Contrast

control each time that a stronger or weaker station is

selected. It always produces a picture even in the extreme

minimum setting and does not tend to overload on strong

signals when in the maximum contrast position.

Chassis using AGC will be identified by the letter "R"

stamped in ink, located on the chassis front apron and ad-

jacent to the Contrast-Brightness control shaft.

AGC DIAGRAM (R - CHASSIS)

3. AUDIO FREQUENCY RESPONSE: In order to extend the

high frequency audio response and to reduce some of the

"boom" base compensation, the following components

should be removed:

C87, .01 mfd. paper capacitor (Cat. No. UCC-630).

C114, 1000 mmf. mica capacitor (Cat. No. UCU-052).

R96, 82,000 ohm resistor (Cat. No URD-095).

4. REMOVAL OF RETRACE LINES: This circuit is used

to eliminate the need for readjustment of the Brightness or

Contrast control to remove retrace lines from the background

of the picture when o change in cameras or program material

takes place at the transmitter The circuit is shown below

715

RI18 27K

GREEN

VERTICAL SWEEP OUTPUT

BLACK

C85

BRTGHTNESS CONTROL

BRIGHTNESS CONTROL CIRCUIT

S. NEW HORIZONTAL SWEEP OUTPUT TRANSFORMER:

In late production receivers the Horizontal Sweep Output

Transformer was changed from the molded coil and lamin-

ated iron core type to an open coil and ceramic iron type

core. In this new type the danger of insulation breakdown

is greatly reduced. The non-metallic core is composed of

iron oxides embedded in a ceramic base. The core losses

at the comparatively high scanning frequency of 15,750 cps

are very low because the magnetic energy absorbed by the

iron core is extremely small. The high voltage tertiary

winding is wound over the primary and secondary winding,

increasing its distance to the core, and further minimizes

the probability of insulation breakdown and corona effects.

All receivers incorporating this new transformer will hove

a letter "T" stamped on the front apron of the chassis..

This letter supersedes the "R" stomping (see paragraph

No. 2).

6.' DRESS OF PICTURE TUBE ANODE LEAD: The hi-

voltage lead connecting between the picture tube anode

and the 1B3GT rectifier tube should not touch the a quodag

coating of the picture tube. This tube should be so orient-

ed that it does not pull this lead taut. In order to avoid

any corona, this hi-voltage lead should be dressed away as

far as possible from any surrounding object.


CHASSIS IDENTIFICATION: To identify the receiver chas-

sis incorporating major modifications in production, the

chassis are identified by a letter stamped upon the front

chassis apron adjacent to the Contrast Control shaft. The

following identifications are given with respective mod-

ification and schematic diagram reference.

Chassis Stamp Modification

No marking None (early production)

"T"

Automatic Gain Control added

AGC plus improved Horizontal

Sweep Transformer and circuit

AUTOMATIC GAIN CONTROL

Automatic Gain Control is incorporated in the most part of

the Model 830 production except for an approximate 1000

early production units.

The AGC voltage is derived from the diode detector and

clipper grid circuit. By connecting the contrast control

into the clipper grid circuit, it provides a source of high

bias voltage which varies directly with the amplitude of

the video carrier. The other end of the contrast control

connects to the video detector load resistor to provide a

lower potential bias source with the same characteristic so

that it will provide for a minimum AGC bias when operating

at weak signal strengths.

AGC provides for greater ease in tuning, as it eliminates

to a large extent the necessity of resetting the contrast

control each time a new station is selected. It minimizes air-

plane flutter and other signal strength changes which would

otherwise affect the picture. BIAS RESISTOR R8, OF V5—

On some "R" chassis receivers, the bias resistor R8 was

1000 ohms. This was decreased to 100 ohms to increase

receiver sensitivity.

HORIZONTAL SWEEP OUTPUT CIRCUIT

The use of a new and improved sweep output transformer

and assiocated circuit was introduced after the "R" chas-

sis production change. All ports with the value indicated

below are common to the "T" chassis only.

This new transformer is an open coil type assembly with a

ceramic iron core, in contrast to the earlier type molded

coil assembly with laminated core used in the early and

"R" production chassis. The high voltage tertiary winding

is placed over the primary and secondary so that its dis-

tance to the' core is increased, thus minimizing the pro-

bability of insulation breakdown and corono effect. The

special core, composed of iron oxides suspended in a

ceramic material, is more efficient in reduction of power

losses than the more conventional solid metallic transfor-

mer cores used in earlier sweep output circuits. In addition,

the core itself is an insulator.

ADDITION OF C117, R123, AND C118: The addition of

these components were added in the greater port of "T"

chassis production to improve horizontal sweep output

phasing.

The components R123 and C118 are connected in the sweep

output circuit at the damper tube, V15, plate as shown in

the schematic below.

The capacitor C117 is connected across the cathode re-

sistor R109 of the Phase Inverter Tube, VI1A.

PICTURE TUBE BRIGHTNESS: R53, port of the picture

tube brightness control circuit in "T" chassis receivers,

was changed during this production to fix the minimum bias

on the picture tube. This resistor, shown below, connected

from the Brightness Control to ground, was changed to

220,000 ohms. This change prevents: blooming of the pic-

ture (excess brightness), and change in picture size, os the

Brightness control is advanced to maximum at the clockwise

position.

REMOVAL of RETRACE LINES (R118,R119, C85 and C110):

The components R118, R119, C85 and C110 were added

during "T" chassis production and ore connected as

shown below. The addition of these components results in

a relatively high positive voltage supplied to the picture

tube cathode from the verticol sweep output circuit during

vertical retrace. The picture tube is biased to cut-off, re-

sulting in most of the retrace lines being eliminated from

the screen. This is an operating advantage since it elim-

inates the need for readjustment of the Brightness or Con-

trast Control, to remove retrace lines which oftentimes

accompany a change in cameras or program material that

takes place at the transmitter.


AUTOMATIC GAIN CONTROL: AGC (Automatic Gain Con-

trol) is incorporated in most production receivers except for

an approximate 1000 early production units. To identify

electrically the chassis having AGC, a letter "R" is

stamped on the front apron of those chassis.

The AGC voltage is derived from the diode detector and

clipper grid circuit By connecting the contrast control

into the clipper grid circuit, it provides a source of high

bias voltage which varies directly with the amplitude of

the video carrier. The other end of the contrast control

connects to the video detector load resistor to provide o

lower potential bias source with the same characteristic so

that it will provide for a minimum AGC bias when operating

at weak signal strengths.

AGC provides for greater ease in tuning, as it eliminates

to a large extent the necessity of resetting the contrast

control each time a new station is selected. It minimizes

airplane flutter and other signal strength changes which

would otherwise affect the picture

PRODUCTION CHANGES BIAS RESISTOR, R8, OF V5 ("R" CHASSIS RECEIVERS):

On some "R" chassis receivers, the bias resistor R8 was

1000 ohms. This was decreased to 100 ohms to increase

sensitivity.

REMOVAL OF RETRACE LINES: By supplying to the

picture tube cathode a relatively high positive voltage

derived from the vertical sweep output circuit during vert-

ical retrace, the picture tube is biased to cut-off, resulting

in most of the retrace lines being eliminated from the screen.

This is an operating advantage since it eliminates the

need for readrustinent of the Brightness or Contrast Control

to remove retrace lines from the screen which oftentimes

accompany a change in cameras or program material that

1akes place at the transmitter.

PRODUCTION CHANGES MODELS 12T1,

12C101, 12C102 AND 12C05

MODELS IOTI, 10T4, 10T6, 10C101, 10C102

1. IF TRAP-Early production receivers hod an IF trap

added in the head-end unit connected between pin 2 of tube

VI and pin 1 on tube V2. All sets with this trap hod the

coil detuned and the screw bent so that the slug could not

be adiusted. On later production receivers, this trap was

removed.

2. IMPROVEMENT OF PICTURE QUALITY-In order to

improve the picture quality of this receiver, the plate load

resistor (R275) of the first video amplifier, V8A, was re-

duced from 2200 ohms to 1500 ohms (URD-053). The re-

duction in gain effected by this change was compensated

for by reducing the value of the screen resistor (R247) of

the first video IF amplifier tube, V4, from 82,000 ohms to

47,000 ohms (URD-089).

3. REDUCTION OF BACKGROUND NOISE DUE TO HAR-

MONICS OF AUDIO IF - Harmonics of the audio IF have a

similar effect on the picture os noise under weaker signal

reception. A simple check for this condition is to short the

limiter, V16, grid to cathode and observe the picture when

receiving o station. If there is a noticeable drop in noise,

the following changes should be made:

An RF choke (L350), RLI-085, and a 5000 mmf. capacitor

(C357), RCW-3014, is added to the sound IF amplifier. This

involves the removal of the connection to the pin 7 of V16

and the junction of resistors R344 and R345 from the B-

bus. These two points are then connected together and re-

turned to B- through the RF choke (L350). The capacitor

(C357) by-posses this choke and connects to chassis

ground (not B-).

The choke location should be from pin 7 of V16 to the

nearest B- bus point, while the capacitor (C357) should

connect from pin 7 of V16 to a ground lug under the dis-

criminator transformer mounting nut. On some receivers it

will be found that the capacitor C357 is added between the

¡unction of R344 and R345 to chassis ground. This capa-

citor location should be moved and connected as indicated

in the above procedure.

4 CHANGE OF BANDWIDTH-Early production receivers

had o bandwidth of 3.5 mc at the 50% response point. In

order to prevent sound in the picture, the IF bandwidth was

reduced by 0.25 mc.

5. CHANNEL No. 11 TRAP: A trap was added to the head-

end unit. Cat. No. RJX-037 is a head-end unit which in-

corporates the trap.

6. 4.5 MC INTERFERENCE: This causes similar condition

described under paragraph (3). In order to completely

eliminate this trouble, a5000 mmf. capacitor (RCW-3014) was

connected between socket terminals No. 4 and No. 7 of

tube V16.

7. CENTERING THE PICTURE: Inability to center the

picture horizontally without neck shadow or the swinging

of the focus coil to an extreme angle from its normal plane,

is caused by excessive current being "bled" through the

horizontal deflection coils. To correct this condition,

the screen voltage connection for the 19BG6 output tube

(V13) was mode directly to B plus as follows: remove the

¡unction of R403 and C411 from junction of C324 and the

horizontal deflection coils. Reconnect the ¡unction of

R403 and C411 to the plus 250-volt bus.

8. NOISE AT LOW SETTING OF VOLUME CONTROL: At

low volume settings, the adjustment of the volume control

produces noise in the speaker which is caused by a cir-

culating current in the volume control induced through the

470 mmf. capacitor, C368. The noise may appear as a

scratching sound similar to a "dirty" volume control or as

a "bloop" as though the receiver wos going in or out of

oscillation.

The capacitor, C368 (470 mmf.), is of a molded mica type

and runs from the B- bus to a terminal on the TB adiacent

to the V18 tube socket bose. Simply remove this capacitor

from the circuit.

9. REDUCTION OF REGENERATION ON CHANNEL NO 6:

a) The 5000 mmf. capacitor (C283) adjacent to the 3rd

video IF coil which connects between the B- bus and

chassis, should hove its leads shortened as much as pos-

sible. Proceed as follows: Shorten the lead to the ground

lug as much as possible by soldering the lead to the chas-

sis immediately below the point where this capacitor con-

nects to the B- bus. Connect an 800 mmf. ceramic capa-

citor (RCW-3026) from pin No. 2 of V4 tube to the B- at the

head-end at the edge of head-end plate next to the 3,16 inch

diameter hole. Realign the video IF to give a flat top

curve at a bias voltage of - 4 volts.

b) The built-in antenna lead must be shortened by 4 feet.

This length is taken off at the end of the lead which runs

under the shelf of the chassis.

c) To reduce regeneration when using a regular antenna

system, reverse the transmission leads at the antenna

terminal board.

d) The bias to the 3rd video IF tube V6 is increased by

reconnecting the ground return side of the grid resistor,

R240, from the 'unction of R221 and R250 to the ¡unction

of R250 and L246. This connects R240 to the opposite

end of the 47-ohm resistor R250.

10. IMPROVEMENT OF HORIZONTAL PULL-IN RANGE:

To improve horizontal pull-in range, the limiting resistor

(R395) in series with the drive control was changed from o

value of 4700 ohms to 10,000 ohms. At the same time the

tolerance on the capacitor C403, 1000 mmf., was changed

from 20% to 10%, the new Stock No. being UCU-1052.

11. CHANGE FROM 6AG5 TO 6BC5 TUBES: Early pro-

duction model 10T6 used 6AG5 type tubes for V2, V4, V5

and V6. These were changed in late production to type

6BC5 tubes. When replacing any 6AG5 tubes use 6BC5 tube

type for replacement.

PRODUCTION CHANGES MODEL 12K1

(continued from Page 46.)

7. CENTERING THE PICTURE: Inability to center the

picture horizontally without neck shadow or the swinging

of the focus coil to on extreme angle with its normal plane,

is caused by excessive current being "bled" through the

horizontal deflection coils. To correct this condition,

the screen voltage connection for the 19BG6 output tube

(V13) was mode directly to B plus as follows: Remove the

junction of R403 and C411 from the ¡unction of C324 and

the horizontal deflection coils. Reconnect the ¡unction of

R403 and C411 to the plus 250 volt bus.

8. NOISE AT LOW SETTING OF VOLUME CONTROL: At

low volume settings, the adjustment of the volume control

produces noise in the speaker which is caused by a cir-

culating current in the volume control induced through the

470 rnmf. capacitor, C368. The noise may appear as a

scratching sound similar to a "dirty" volume control or os

a "bloop" as though the receiver was going in or out of

oscillation.

The capacitor, C368 (470 mmf.), is of a molded mica type

and runs from the B- bus to a terminal on the TB adjacent

to the V18 tube socket base. Simply remove this capacitor

from the circuit.

9. REDUCTION OF REGENERATION OF CHANNEL NO.6:

a. The 5000 mmf. capacitor (C283) adjacent to the 3rd

video IF coil, which connects between the B- bus and

chassis, should have its leads shortened as much as pos-

sible. Proceed as follows: Shorten the lead to the ground

lug os much as possible by soldering the lead to the chas-

sis immediately below the point where this capacitor con-

nects to the B- bus. Connect an 800 mmf. ceramic capa-

citor (RCW-3026) from pin No. 2 of V4 tube to the B- at

the head-end at the edge of head-end plate next to the 3/16

inch diameter hole. Realign the video IF to give a flot top

curve at a bias voltage of -4 volts.

b. The built-in antenna lead must be shortened by 4 feet.

This length is token off at the end of the lead which runs

under the shelf of the chassis.

c. To reduce regeneration when using a regular antenna

system, reverse the transmission leads at the antenna ter-

minal board.

d. The bias to the 3rd video IF tube V6 is increased by re-

connecting the ground return side of the grid resistor,

R240, from the junction of R221 and R250 to the junction

of R250 and L246. This connects R240 to the opposite end

of the 47 ohm resistor R250.

10. IMPROVEMENT OF HORIZONTAL PULL-IN RANGE:

To improve horizontal pull-in range, the limiting resistor

(R395) in series with the drive control was changed from a

value of 4700 ohms to 10,000 ohms. At the some time the

tolerance on the capacitor C403, 1000 mmf. was changed

from 20% to 10%, the new Stock NO. being UCU-1052.

PRODUCTION CHANGES MODEL I2T7

1. SUPPRESSION OF RF OSCILLATION-To minimize the

tendency to oscillate on Channel No. 12 and No. 13, o cer-

amic capacitor. C226, 800 mmf., has been added from pin 3

of the tube V3 to chassis In the head-end unit. Part No. is

RCW-3026.

2. INCREASE OF HORIZONTAL SWEEP-In order to in-

crease horizontal sweep, the following changes were in-

corporated during production: a capacitor, C380, was added

across the terminals 6 and 8 of the horizontal sweep trans-

former. The type used is a 220 mmf. capacitor, 1500 volt,

with a parts No. of RCU-295. At the same time the wiring

of capacitor C376 was changed to connect to terminal 5 of

the damper tube V15, 25WIGT.

In case a capacitor of 220 mmf., 1500 volts is not available,

use two capacitors of values 390 mmf. (port No. UCU-1042,

or 470 mmf. (part No. UCU-1044.) in series connection.

3. INCREASE OF LOW FREQUENCY RESPONSE-To in-

crease the low frequency response of the video amplifier,

the capacitor C268 was changed from a .02 mf. to a .05 mf.

value. The new number is UCC-045.

4. IMPROVEMENT OF HORIZONTAL PULL IN RANGE-In

the biasing network for the horizontal control tube, V12A,

the resistor R379 was changed from a 180,000 to a 270,000

value with a part number of URD-107.

5. TEMPORARY SUBSTITUTION-Because of temporary

procurement difficulties, some receivers were wired with

the following changes:

Resistor R277: a substitution of 180,000 ohms was used in-

stead of the correct value of 220,000 ohms.

Resistor R379: a substitution of 220,000 ohms was used in-

stead of the correct value of 270,000 ohms.


I6C110, 16C111 AND I6C115

1. The Horizontal Drive control R369 has been reconnected,

to remove the effect of the drive control setting on the

horizontal pull-in sensitivity.

If any early production receivers are rewired, R369 potent-

iometer should be changed to one of higher wattage rating.

Catalog number for the higher wattage rating R369, 25K

potentiometer, is RRC-140.

2. Capacitor C268 has been changed from .02 add. to .05 mfd

Cat. No. UCC-045. This change was made to improve the

low frequency response of the video amplifier.

3. To eliminate Barkhausen oscillation (vertical black

beady lines in raster when not receiving o station) the

following resistor was added to early production receivers.

Pin 8 of V14 was connected to B- through o 47 ohm, 1 watt,

resistor, Cat. No. URE-017.

VI3E3 1/2 - I2SN7GT HOR OSC • 11---

3 C365 '800

5 4 /

-

R6386K6

367 33K

L 3 51

EleHOR 0 HOLD (REAR)

ajn

•

6

C 368 5000

C367 _-t800

R 368 'It, 401( C366 1000

R369 fSK

HOR DRIVE

1 C369 6

R371 15K

37C I MEC

Her. Drive Control connections, early production

4. Two mica capacitors, 390 mmf., 500 volt each, were con-

nected in series between terminals 6 and 8 of T351 as a

substitute for C382, 180 mmf.

PRODUCTION CHANGES

14T2, 14T3, 14C102 AND 14C103

16C113 AND 16C116 16T3, 16T4

I. TO CORRECT BENDING AT TOP OF PICTURE-In early production receivers R273, R274 and the sync voltage

take-off capacitor C351 was connected as shown below.

In late production R274 was deleted, R273 was changed to

220 ohms and is reconnected in series with R272, C351,

the sync coupling capacitor, is now connected at the ¡unc-

tion of R272 and R273 as shown in the schematic diagram. 109

PRODUCTION CHANGES 2. ELIMINATION OF VERTICAL LINES AT LEFT SIDE

OF PICTURE (ADDITION OF C371)-Capacitor C371, .05

mfd, 600 volts, was added to later production receivers, to

by-pass transient voltages developed by the horizontal

sweep circuit at the B plus supply. These voltages would

produce the effect of vertical, light and dark bars in the

left part of the picture.

The capacitor, C371, is connected from the B plus terminal

of the terminal strip ad¡acent to the damper tube, V16, on

the chassis side apron and to the B— bus connection of

C374.

PRODUCTION CHANGES MODEL 16K1 or 16K2

1. REDUCTION OF AUDIO BUZZ-The following changes

were mode in the receiver at the start of production to

reduce vertical sweep buzz in the audio output. These

changes are incorporated in all receivers shipped.

a. In the cathode circuit of the audio amplifier tube V20 two

capacitors, C426 (5000 mmf.) and C423 (50 mf.) were re-

moved.

b. At the secondary of the audio interstage transformer

(T406), a 330,000 ohm, )5 watt resistor, R429, was connect-

ed.

2. REDUCTION OF "TWEET" ON CHANNEL NO. 4 AND

OSCILLATION ON CHANNEL NO. 6 a. A capacitor of 800

nunf. was connected between the head-end unit and the

main receiver. The change-over should be made as follows:

With as short a lead as possible, solder one end of an 800

mmf. ceramic capacitor (C227) to the mounting clip of the

trap trimmer (C206) on the head-end unit. The other end of

the capacitor is soldered to a lug fastened securely at the

punched receiver chassis hole adjacent to the tube socket,

V2I.

b. Relocation of the ceramic capacitor C252 from its pre-

sent termination at the 7th B— bus hole of the terminal

board No. 1 and the chassis weld between tube sockets,

V5 and V6. Relocate this capacitor by soldering one end

of it to the 1st hole in the B— bus of the same terminal

strip. The other end is soldered to the chassis hole nearest

L251. For convenience, the capacitor lead may be inserted

through the 3 8 inch hole nearest L251 and then soldered

from the top of the chassis to a cleaned and tinned top

edge of the hole.


17T3, 17C103, 17C104, 17005, 17C107, 17C108

17C109

Some chassis may hove ceramic couplates in the vertical

intergrotor circuit, or coupling the 1st and 2nd audio am-

plifiers. Wiring instructions are shown below.

R301 6SL7 PIN2 1 VVVVv—

C30 3

82K

T.00I

.002 R 302

38K

VERTICAL INTEGRATOR

B+

6S07.PINe 2

R417

250K

R4I9 3

C419 .01MF

JUNCTION R418 P421 R425 4

500K

AUDIO COCPLATE

two different types of sound IF discriminator transformers

have been u-ed during the production of TV receivers

which call for the Stock RTD-008 replacement transformer.

These transformers ore shown below as A and B, and have

the same electrical characteristics. Since the type A does

not have a lettered base, the orientation for connection is

shown in the sketch.

A

•

0

•

E

(A)

A

•

(B)

PRODUCTION CHANGES MODEL 17C110 AND

17C111

1. VIDEO IF CHANGES: Early production receivers used a

resistor R155, 9100 ohms (URD-1096). When the core of the

1st video IF coil RLP-018 was changed, this resistor was

changed to o value of 5600 ohms (URD-167). A change of

the core of the 2nd video IF coil, RLP-019, necessitated o

change of the resistor R159 from 12,000 ohms to 20,000

ohms (URD-1080). With the early core type the value of

capacitor C153 was 18 mmf. and the value of C156 was 24

mmf.

2. GENERAL IMPROVEMENTS: In early production re-

ceivers the following components were used with the given

value:

C356 Capacitor — .015 mf., 200 v., RCN-042

R2I5 Resistor — 1000 ohms, )5w., URD-049

R218 Resistor — 1800 ohms, Yaw., URE-055

Some early production receivers had a capacitor C222, 800

rrimf . from No. 4 of V112 tube.

3. VERTICAL MULTIVIBRATOR CIRCUIT: Early produc-

tion receivers used a I2AU7 tube type for V120 with the

following component values:

R303 - 1500 ohms, 1 watt

R306 -2.2 meg., Yi watt

R308 - 82,000 ohm, )4 watt

C304 - .04 mf., 600 v.

C306 - .0033 mf., 600 v.

The switch-over to the new circuit was made gradually

with some receivers still using one or two components of

the original value.

4. IF TWEETS: In order to remove IF tweets a filament

choke, LI65 (RLF-048), was connected between terminal

pin P4 and filament of tube 6AL5 (V110). Resistor R224

and capacitor C219 were rewired with the capacitor between

secondary of T203 and the junction of R225 and grid con-

nection (Pin 1) of V110 and the resistor R224 from this

¡unction to ground. The bottom end of the secondary was

connected to ground.

5. INCREASE RANGE OF BRIGHTNESS CONTROL: In

order to increase the range of the brightness control resistor,

R175 was changed from 100,000 ohms (URD-097) to a value

of 82,000 ohms (URD-095)

6. DEFLECTION YOKE CHANGES: The early production

yoke RLD-030 which is identified by the markings on the

yoke as follows "M77J11-10-No. 33, blue code dot on the

winding tope" is replaced by the yoke RLD-037. The use

of this improved yoke necessitates the installation of a

variable trimmer, C302, RCY-069. The trimmer is connected

to the yoke terminal No. 8 and chassis ground. A lead is

already provided on the yoke for this purpose.

The trimmer is a single hole mount type and is fastened to

the blank hole between two terminal boards directly above

the yoke assembly with the trimmer screw facing the back

of the receiver. The ground connection is made automatic-

ally through the body of the trimmer capacitor.

Care should be exercised in tightening the mounting nut on

the trimmer os the trimmer is fragile, and can easily be

damaged. A locking nut is provided on the trimmer and

should be screwed down against the mounting nut to hold

the adjustment.

Because of different type deflection coils, it is necessary

to use a different vertical sweep output transformer with

this late type yoke. In order to avoid mistakes when re-

placing yokes and vertical output transformers, the follow-

ing chart will be helpful:

EARLY PRODUCTION

YOKE TRANSFORMER

Cot. No. Stomped on Unit Cat. No. Stamped on Unit

RLD-030 M77111-10

Blue code

dot on wind-

ing tape.

RTP-110 K82J183

LATE PRODUCTION

YOKE TRANSFORMER

Cot, No. Stomped on Unit Cot. No. Stomped on Unit

RLD-037 M77J11- 15

Green code dot on wind-

ing tape.

RT0-102 K82J183-2

On some yokes the capacitor C381 (3.5 mmf.) will be a

short piece of transmission line instead of the disk type

capacitor. To accommodate these, the terminal board ar-

rangement is slightly different on each yoke. The proper

connection for each is shown below.

7. SYNC CIRCUIT WIRING: Lote production receivers had

some changes in the wiring of the horizontal sync circuit.

Due to capacity effects of the various wires and the high

voltage of this circuit the sync circuit did not operate pro-

perly at normal contrast control setting. To eliminate this

trouble the wiring was changed. In cose some early pro-

duction receivers show this defect, rewire the set as follows:

(1) Change deflection yoke lead from terminal CIO to R11.

(2) Change pin connection C10 to R11.

(3) Change video peaking coil connection from C9 to C7 to

C6 and C5.

(4) Lead on C6 change to C7.

(5) Pin connection on C9 change to C6.

(6) Pin connection on C6 change to C7.

(7) Capacitor C166 connected to C7 change to C5.

(8) Resistor R174, 470,000 ohms connected to C7 change to

CS.

8. BRIGHTNESS CONTROL: The range of the Brightness

control was increased by reducing the value of resistor R175

(82,000 ohms) to 56,000 ohms, Port No. URD-091.

9. PLATE DISSIPATION OF TUBE V106: The plate dis-

sipation of the 3rd video IF tube, V106 (6CB6) was reduced

by decreasing the resistance R181, 33,000 ohms to a value

of 18,000 ohms, Parts No. URD-079. At the some time it is

wired across the capacitor C159.

10. INTERFERENCE REDUCTION "W" RF TUNER: In

order to reduce FM interference the resistance R103, 3300

ohms, Yaw. was increased to a value of 5600 ohms, 1 watt,

Part No. URE-067. The RF Tuner with this new resistor is

stamped "W" for easy identification. To compensate for

the higher voltage drop the B plus to the tube V101 was in-

creased from 160 to 250 volts. This is accomplished by

moving the orange wire (B plus 160 volt) to the second lug

from the top and connecting the third lug with the fourth lug

which connects the B plus for V102 to the B plus 250 volts

red lead.

At the some time the resistance R402, 2000 ohms, w.w. 10

watt was changed to a value of 2350 ohms, Port No. RRW-

083.

11. VERTICAL SYNC: In order to reduce vertical sync,

capacitor C308 (.002 mf) was changed to a value of .001

mf. Parts No. UCC-035.

12. RF TUNER, "D" VERSION: In order to reduce oscil-

lator radiation the RF tuner circuit was improved.

13. IMPROVEMENT OF VERTICAL LINEARITY CIRCUIT:

Resistor R306, 330,000 ohms, Yaw., was changed to a value

of 820,000 ohms, URD-I19 in order to improve the vertical

I inearity.

PRODUCTION CHANGES MODELS 20T2,

20C105, 20T106 AND 21C200

VIDEO DETECTOR ASSEMBLY RLX-035-In some as-

semblies a special high efficiency diode is used marked

with a red dot. To maintain the same Q of the circuit and

to obtain proper bandwidth, a resistor of 12,000 ohms is

connected across the diode. In replacing this diode with

the normal type do not use this resistor. In case of doubt

check for proper bandwidth.

On some assemblies the rectifier symbol is stamped on the

top plate to indicate polarity of terminals. When replacing

diode, check to see that both diode and plate markings

are in the some direction.

VERTICAL SWEEP CIRCUIT VERSIONS-Four versions of

this circuit were produced:

A. The early production receiver uses the circuit of sche-

matic diagram. It bears no identification mark on the chas-

sis.

B. The second version improved the vertical linearity by

adding the following components:

1. A capacitor C318, .022 mf., 1000 v. (RCN-044) and o

resistor R422, 6800 ohms, )5W. (URD-093) were added in

series across the vertical output transformer T302.

2. A resistor, R385, 2200 ohms, W. (URD-057) was added

as a grid suppressor in series with the grid pin of VIO,

12BH7.

These version is rubber stamped "A" or "B" on the rear

apron.

C. The third version uses a completely revised circuit to

provide improved interlace. The circuit is shown in the

schematic diagram and the chassis is identified by the

rubber stamped letter "I".

D. Model 21C200 receivers use a different vertical output

circuit using a 25L6GT tube instead of the 12BH7 (see

schematic diagram); to compensate for the different file-

voltage the Globor resistor in the filament string, R457,

was reduced from 31 ohms to 20 ohms (RRW-051), with a

different filament circuit. See schematic diagram.

Below follows a list of ports used for this circuit.

RCC-113

RRW-051

UCC-045

URD-095

URD-I33

URE-041

URD-1033

C306, 307 Capacitor .02 mf, 600v.

R457 Resistor, 20 ohms, Globe,.

C276 Capacitor, .5 mf. 200..

R330, 336 Resistor 82K ohms, )5W.

R331 Resistor, 330G ohms, YaW.

R332 Resistor, 470 ohms, 1W.

R335 Resistor, 220 ohms, )4W.

"LOCAL DISTANT" SWITCH CIRCUIT-In order to prevent

overloading of the sync circuit on very strong stations the

sync is taken without amplification right after the video

detector with switch on "local". For reception of other

stations the switch takes the sync off after amplification

by the video IF amplifier V7, I2AT7 on the "distant"

position.

110

PRODUCTION CHANGES Below follows a list of ports used for this circuit.

RCW-3037

RS W-067

URD-073

URD-081

URD-085

URD-105

URD-121

C284 Copacitot 800 rnmf, ceramic.

5200 Switch, locol-distant switch.

R287 Resistor, 10K ohms, )0Y.

R333 Resistor, 22K ohms, %W.

R262 Resistor, 33K ohms, W.

R286 Resistor, 220K ohms, Y2W.

R288 Resistor, 1 megohm, )5W.

REDUCTION OF HUM AND PICTURE SLIDE-Excessive

hum modulation of the horizontal sweep was reduced by

the following changes:

o. Addition of another 80 rnf capacitor, RCE-I12 across

capacitor C353 in the filter section.

b. Lead dress changes: Red horizontal blanking leod going

to the screen of the picture tube enters chassis through

the slot between horizontal drive control and horizontal

hold and goes directly to its original connection on the

terminal board instead of entering chassis with other boda

through rubber grommet.

The blue leod running from plate of sync amplifier tube,

VII to junction of R352, R353 ond C353 was placed directly

over the resistor R320, 100,000 ohms adjacent to R352 by

taking up slack in the lead.

PRODUCTION CHANGES MODELS 17C125,

20C107, 21C201-C202-C204-C206 21C208, 21C208U-C210-C214, 21TI-T1U-T3

T6

Several mechanical and electrical changes have occurred

during the production of this family of receivers. Listed be-

low are the various items to be considered with reference

to specific production versions. It should be noted that

electrical circuit changes are not chronologically related

to those changes which occurred in the various mechanical

assemblies. To prevent confusion, electrical circuit changes

shall be denoted as 1st, 2nd, 3rd or 4th production versions,

while mechanical assembly changes shall be referred to os

"early," "mid" and "late" production items.

DETECTOR CAN ASSEMBLY,

let and 2nd production: The diode detector is located

under the removable "hat".

3rd and 4th production: To change the diode or any other

component within this assembly, it is merely necessary to

remove the two self-tapping screws at the base of the as-

sembly. The entire assembly may then be pulled off of the

mounting plate. The shield can may then be removed from

the assembly by compressing the two spring tabs on the

top tuning core securing clip.

ELECTRICAL ITEMS

1. HORIZONTAL OUTPUT TUBE: Horizontal output tube

was changed horn 25AV5 to 25BQ6. The 25AV5 tube was

used in first production models only.

2. IMPROVEMENT IN PICTURE QUALITY: The diode

load resistor, R162, was changed from 3900 ohms to 3000

ohms. For identification these receivers were rubber-stamp-

ed on the back apron of the chassis with No. 420.

3. HORIZONTAL SWEEP OUTPUT TRANSFORMER AND

YOKE: In 3rd and 4th production models the horizontal

output transformer and yoke were changed. Receivers using

these revised sweep components bear a label on the high

voltage compartment rear door which indicates the catalog

numbers of the horizontal output transformer and yoke con-

tained therein. Models 17C125 and 20CI07 use horizontal

output transformer RTO-130, 21 models use RT0-129. The

yoke to be used with either of these transformers is RLD-

050. These components should not be used in those re-

ceivers which used the "early" type transformer and yoke,

unless a "late" transformer and a "late" yoke are simul-

taneously installed. These receivers using these "late"

sweep components are rubber-stamped with No. 430 and in-

clude changes of No. 420.

4. DELAYED AGC: In order to improve the operation of the

receiver a new AGC circuit was incorporated in the 3rd and

4th production. Receivers using this new circuit may be

identified by noting the "Local-Fringe Stabilizer" two-

position switch label located on the cabinet back. This

control replaces the original potentiometer and switch, the

label of which reads "Picture Stabilizer" or "Signal

Strength Compensator."

The purpose of this new circuit is two-fold:

o. To prohibit the development of AGC bias for the 2nd

RF stage until o sufficiently strong signal is received which

will remove all conversion noise in the picture. This re-

sults in an improvement of the signal-to-noise ratio on

weak signals while still permitting AGC action by virture of

a non-delayed AGC voltage which is applied to the IF system.

b. To make the AGC fully automatic, thus eliminating the

necessity of adjusting an AGC level potentiometer to suit

particular installation conditions. For easy identification

these receivers were rubber-stamped with No. 401 which also

include changes No. 420 and No. 430.

5. NEW VIDEO AMPLIFIER: A new video amplifier circuit

using a 6BK7-A instead of 12BH7 tube was used in the 4th

production receivers. Receivers and cartons bearing these

receivers ore stamped with the number 1140.

This new circuit has been incorporated, to increase the over-

all receiver bandwidth and to improve the video transient

response. Since this circuit change was incorporated after

the delayed AGC circuit, all receivers equipped with the

new video amplifier also include delayed AGC.

Together with this circuit change, the capacitor C162 in

the video detector is changed from 5 ami to 9 mmf. The

new type tube necessitated a change in the filament string

wiring which permits the operation of a 450 ma. heater

(6BK7-A) partially in series with other filaments and parti-

ally from the filament transformer.

When replacing the filament transformer, (4th production

,nly) T401, be sure to measure the voltage at pin 3 of V106

(3rd video IF). This voltage should read approximately 12.0

volts. If zero or near zero volts are measured at this point

the primary leads should be reversed.

For easy identification receivers incorporating this circuit

change were rubber-stamped with No. 1140. These receivers

include a 3000-ohm diode load resistor and delayed AGC.

6. CHANGE OF PICTURE TUBE IN MODEL 20C107 RE-

CEIVERS: Late production 20C107 receivers were equipped

with a 20DP4A picture tube instead of 20CP4A as used in

the earlier production. Receivers using a 20CP4A tube re-

quire two flat washers on each support rod as a spacing

medium between the flux shield disk and the fibre yoke

support.

Receivers using a 20DP4 picture tube require a "T" spacer

and one flat washer on each support rod as is also required

for the 21-inch models.

7. "LATE" TYPE VIDEO DETECTOR ASSEMBLY: First

second and third production receivers incorporate a video

detector assembly in which the value of C162 is 5 mmf. The

video detector of 4th production receivers incorporate o 9

mmf. capacitor, C162. This change appears in all receivers

which incorporate the 6BK7-A type video amplifier.

PRODUCTION CHANGES MODELS 21C225, C226

C227, C228, C229, C230, C231, C232, C233

21T20-T21

1. VIDEO IF AMPLIFIER: During early production capa-

citor C151 in 38.0 mc trap circuit was changed from 75 to

8 mmf, capacitor C161 in 47.25 mc trap circuit was changed

from 8 to 22 mmf. Together with this change capacitor RI82

47 mmf and R166, 10 ohms at the bottom end of the IF grid

coil, L154, were removed and the coil directly connected to

the coaxial link from the RF tuner.

In receivers bearing these changes, capacitor C141, 39

rnmf, at the output of the RF tuner is omitted. For early

production receivers use replacement RF tuner RJX-056.

2. RF TUNERS: During the 1st production of these receiv-

ers two different types of the "EE" version tuner were

used. Both types incorporate a 6AB4 tube as Ist RF am-

plifier. The early version incorporates the capacitor C141,

see "EE" Version Tuner; this type is used together with

the early type traps L152 and L153 using R166 and C182

in the video input IF circuit, see Deflection Yoke Wiring.

Receivers using the later type traps without R166 and C181

in the input circuit use o "EE" tuner without the capa-

citor C141.

During the 2nd and 3rd production the "BK" version tuner

was incorporated in the receiver, using a 6BK7 tube os 1st

RF amplifier. Receivers with this tuner are stamped with

the number ''453'' or higher. The tuner is easily identifiable

by the tunable cathode choke coil, L100, mounted at the

input transformer T100.

Early type tuners incor Ferrite capacitor C141, so that they

may be used with the early type traps L152 and L153. This

capacitor is connected between the coaxial link and ground.

3. HORIZONTAL SWEEP OUTPUT CIRCUIT: The linearity

of the horizontal sweep was improved by incorporating a

new circuit which used the following new items:

RLD-056 Horizontal Linearity Coil

RLD-058 Horizontal Width Coil

RT0-146 Horizontal Output Transformer

These items should not be used as replacement in earlier

production chassis.

Chassis incorporating this production change bear a rubber

stamp "548" and in most cases also bear a label on the

high-voltage coge which calls attention to the above listed

electrical items.

4. REDUCTION OF IF INTERFERENCE: To assist in the

reduction of IF interference chassis bottom plate, RHS-119

and adjacent channel trap shield can, RHS-112 was added

during the production run.

5. VIDEO AMPLIFIER: The video output tube 6AQ5 was

changed to 6CL6 and the circuitry has been slightly mod-

ified as illustrated in Deflection Yoke Winding. Receivers

incorporating this circuit may be identified by noting the

6CL6 tube type on the tube layout label affixed to the cab-

inet back.

6. BRIGHTNESS CONTROL CIRCUIT: To prove greater

consistency of raster size with respect to changes in the

brightness level a new brightness control circuit was used

in late production receivers. The new brightness control

Cat. No. is RRC-245.

PRODUCTION CHANGES MODELS 17C127,

17T15-17, 21C114-C115-C116-C117-C119,

21C120-C121, 21TIO-T11-T12-T14-T15-T19

1. VIDEO AMPLIFIER TUBE CHANGE: The video am-

plifier was changed during the production from a 6AG7

type to a 6CL6. No other video amplifier circuit changes

were made at this time. Because of different pin con-

nections a different socket adapter, RJS-194, for the 6CL6

is to be used.

2. ELECTROSTATIC PICTURE TUBES (21FP4A): Late

production Models 21T10 and 21711 use the electro-static

picture tube type 21FP4A.

The receiver leaves the factory with the focus lead con-

nected to ground. If the focus requires adjustment, con-

nect the focus lead to B plus or B plus boost instead.

3. VERTICAL LINEARITY CONTROL: During production

the value of this control was changed from 4000 ohms to

2000 ohms. For replacement purposes only the 4000-ohm

unit will be supplied. This will have no effect upon the re-

ceiver performance.

4. RF TUNER: Some late production receivers use a new

RF tuner, RJX-057. This tuner is interchangeable with the

earlier type. This unit however requires different mounting

brackets.

5. POWER TRANSFORMER CHANGE: Late production re-

ceivers use o power transformer with three secondary leads

two for the rectifier plates and one center top as compared

with the early version transformer which has six secondary

leads.

In order to use old type transformer for replacement of new

type transformers merely disregard the red-yellow leads.

ground the two brown leads and connect the two remaining

red leads to the rectifier plates.

6. AGC CIRCUIT CHANGE: In late production receivers

the AGC circuit was changed as indicated in the schematic.

This change results in a wider range of the area control,

permitting slightly increased sensitivity for fringe reception

and better picture stability in the very strong signal oreas.

7. VIDEO IF INPUT CHANGE: Capacitor C174, 800 rami

was added in the input circuit of the video amplifier be-

tween resistors R152 and RI54 and chassis during the last

part of the third production.

8. I.M.F. PICTURE TUBE, MODEL 21710 ONLY: Late

production receivers have a picture tube installed with an

internal magnetic focus unit.

9. CHANGE OF VERTICAL OSCILLATOR CIRCUIT: To

give better interlace and vertical control range, the follow-

ing components of the vertical oscillator circuits were

changed as indicated in the following charts.

Old Part Changed To

Symbol Value Symbol

C206 .001 mf C211

R165 47,000 ohms RI64

R204 100,000 ohms R224

R208 100,000 ohms R225

Value

.0056 ad

56,000 ohms

47,000 ohms

27,000 ohms

DISTORTION IN PICTURE

Cat. No,

RCN-087

URE-091

URD-089

URD-083

Complaints hove been received of extremely block pictures

distorted picture, top of picture pulling and "S" shaped

lines in picture on sets using the "F" chassis.

In most every case, these troubles are caused by improper

setting of the "area" control on the rear of the set. If the

control is set in its extreme clockwise position, the above

picture defects are liable to be found. If the control is set

to its minimum position (counter clockwise) or at too low a

setting, a weak washed out picture containing very poor

blacks will result.

For metropolitan areas, one half range is usually the best

operating position.

In order to set the area control properly, adjust the contrast

control to maximum and then adjust the area control on the

rear of the set to a point where the picture comes in just a

little too block (without pulling). The area control should

then be left alone while the set remains in that location and

various degrees of shading can be obtained by varying the

contrast control as in other set.

HORIZONTAL INSTABILITY

Adjustment of Horizontal Stabilizer Coil, L251:

1. Remove tube V106.

This will remove all sync signals from the sweep systems.

Co not short pin 2, V112, to chassis as is stated in G.E.

preliminary service notes. Use the weakest visible signal

to complete the remainder of the procedure. L251 will tune

to two positions which will bring the picture into sync. The

correct core position is the one with the core almost all

the way into the coil.

2. Short-circuit terminals of coil, L251.

3. Adjust horizontal hold control potentiometer to bring

received picture closely into sync.

4. Remove short-circuit from across terminals of L251.

5. Tune L251 to bring picture back into a closely synced

condition.

6. Replace tube V106. Check lock-in ability of horizontal

sync with strong and weak signals.

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UI CD 1:6) - World Radio History

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