SERVICE MANUAL - Wireless Sound Bar - Encompass Parts

SE

RV

ICE

MA

NU

AL

SERVICE MANUAL

CAUTIONBEFORE SERVICING THE UNIT, READ THE “SAFETY PRECAUTIONS”IN THIS MANUAL.

CONFIDENTIAL

MO

DE

L: S

L4Y

(SL

4Y, S

PH

4B-W

)

P/NO : AFN79154806 MAY, 2019

MODEL: SL4Y(SL4Y, SPH4B-W)

Copyright © 2019 LG Electronics Inc. All rights reserved. Only for training and service purposes.

Wireless Sound Bar

“Any reproduction, duplication, distribution (including by way of email, facsimile or otherelectronic means), publication, modification, copying or transmission of this Service Manual isSTRICTLY PROHIBITED unless you have obtained the prior written consent of the LG Electronicsentity from which you received this Service Manual. The material covered by this prohibition includes,without limitation, any text, graphics or logos in this Service Manual.”

1-1 Copyright © 2019 LG Electronics Inc. All rights reserved.Only for training and service purposes.

CONTENTS

SECTION 1 ........GENERAL

SECTION 2 ........CABINET & MAIN CHASSIS

SECTION 3 ........ELECTRICAL

SECTION 4 ........WIRELESS SUBWOOFER PART


SECTION 1

GENERAL

CONTENTS

ESD PRECAUTIONS ......................................................................................................................................... 1-3

LOCATION OF CUSTOMER CONTROLS ........................................................................................................ 1-4

WIRELESS SUBWOOFER CONNECTION ....................................................................................................... 1-5

REAR SPEAKERS CONNECTION (SOLD SEPARATELY) ............................................................................ 1-6

HIDDEN KEY MODE ......................................................................................................................................... 1-7

FIRMWARE UPDATE GUIDE ........................................................................................................................... 1-8

SPECIFICATIONS ........................................................................................................................................... 1-11


ESD PRECAUTIONS

Electrostatically Sensitive Devices (ESD)Some semiconductor (solid state) devices can be damaged easily by static electricity. Such componentscommonly are called Electrostatically Sensitive Devices (ESD). Examples of typical ESD devices are integratedcircuits and some field-effect transistors and semiconductor chip components. The following techniques shouldbe used to help reduce the incidence of component damage caused by static electricity.

1. Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain offany electrostatic charge on your body by touching a known earth ground. Alternatively, obtain and wear acommercially available discharging wrist strap device, which should be removed for potential shock reasonsprior to applying power to the unit under test.

2. After removing an electrical assembly equipped with ESD devices, place the assembly on a conductive surface such as aluminum foil, to prevent electrostatic charge buildup or exposure of the assembly.

3. Use only a grounded-tip soldering iron to solder or unsolder ESD devices.4. Use only an anti-static solder removal device. Some solder removal devices not classified as "anti-static" can

generate electrical charges sufficient to damage ESD devices.5. Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ESD

devices.6. Do not remove a replacement ESD device from its protective package until immediately before you are

ready to install it. (Most replacement ESD devices are packaged with leads electrically shorted together byconductive foam, aluminum foil or comparable conductive materials).

7. Immediately before removing the protective material from the leads of a replacement ESD device, touch theprotective material to the chassis or circuit assembly into which the device will by installed.

CAUTION : BE SURE NO POWER IS APPLIED TO THE CHASSIS OR CIRCUIT, AND OBSERVE ALL OTHER SAFETY PRECAUTIONS.

8. Minimize bodily motions when handing unpackaged replacement ESD devices. (Otherwise harmless motionsuch as the brushing together of your clothes fabric or the lifting of your foot from a carpeted floor can generate static electricity sufficient to damage an ESD device).

CAUTION. GRAPHIC SYMBOLS

THE LIGHTNING FLASH WITH APROWHEAD SYMBOL. WITHIN AN EQUILATERAL TRIANGLE, IS INTENDED TO ALERT THE SERVICE PERSONNEL TO THE PRESENCE OF UNINSULATED “DANGEROUS VOLTAGE” THAT MAY BE OF SUFFICIENT MAGNITUDE TO CONSTITUTE A RISK OF ELECTRIC SHOCK.

THE EXCLAMATION POINT WITHIN AN EQUILATERAL TRIANGLE IS INTENDED TO ALERT THESERVICE PERSONNEL TO THE PRESENCE OF IMPORTANT SAFETY INFORMATION IN SERVICELITERATURE.


LOCATION OF CUSTOMER CONTROLS

Front panel

Rear panel

Display Window- Display window will be darkened automatically if there is no key input for 15 seconds. When you press any button, the display window will brighten.

Remote sensor

(Standby)- Switches the unit ON or OFF.

F (Function)- Select the function and input source by pressing F repeatedly.

Input source / Function Display

Optical LG Sound Sync (Wired) OPT

Bluetooth BT

LG Sound Sync (Wireless) LG TV

USB USB

+/− (Volume)- Adjusts volume level.

DC IN- Connect to the AC adapter.

OPTICAL IN- Connect the OPTICAL IN jack on the back of the unit to OPTICAL OUT jack on the TV.

USB Port- Connect USB memory device to the USB port on the back of the unit.

1

2

3

1

2

3


WIRELESS SUBWOOFER CONNECTION

LED indicator of wireless subwoofer

LED Color Status

Yellow - green(Blink) The connection is trying.

Yellow - green The connection is completed.

RedThe wireless subwoofer is in standby mode or the connection is failed.

Off (No display)

The power cord of wirelesssubwoofer is disconnected.

Setting up the wireless subwoofer for the fi rst time

1. Connect the power cord to the subwoofer and plug the power cord into a power outlet.2. Turn on the main unit : The sound bar and wireless subwoofer will be automatically connected. - Yellow - green on the rear of wireless subwoofer turns on.

Manually pairing wireless subwoofer

When your connection is not completed, you can check red LED on the wireless subwoofer and the wireless subwoofer does not make sound. To solve the problem, follow the steps below.

1. Press PAIRING button on the rear of the wireless subwoofer.

- The yellow - green LED on the rear of the wireless subwoofer blinks quickly. (If the green LED does not blink, press and hold the PAIRING.)

2. Turn on the sound bar. - Pairing is completed. The yellow - green LED on the front of the wireless subwoofer turns on.

Note:• It takes a few seconds (and may take longer) for the main unit and the subwoofer to communicate with each other and make sounds.• The closer the main unit and the subwoofer, the better sound quality. It is recommended to install the main unit and the subwoofer as close as possible and avoid the cases below. - There is a obstacle between the main unit and the subwoofer. - There is a device using same frequency with this wireless connection such as a medical equipment, a microwave or a wireless LAN device. - Keep the sound bar and the subwoofer away from the device (ex. wireless router, microwave oven, etc.) over 1m to prevent wireless interference.


Connecting the rear speakers

1. Connect the black stripe wire to the terminal marked - (minus) and the other end to the terminal marked + (plus).

2. Connect the wireless receiver and the rear speakers (right, left) with the speaker cables.

Color Position

Grey Rear rightBlue Rear left

Note :You need to purchase the wireless rear speakers kit (SPK8-S) to enjoy surround sound.

Caution :• Use the speaker supplied with this unit only. Using any other speaker may cause malfunction.• Be sure to match the speaker cable to the appropriate terminal on the components: + to + and – to –. If the cables are reversed, the sound will be distorted and will lack bass.

LED indicator of wireless receiver

LED Color Status

Yellow - green(Blink) The connection is trying.

Yellow - green The wireless receiver is receiving the signal from the sound bar.

Red The wreless receiver is in standby mode.

Off(No display)

The power cord of wirelessreceiver is disconnected

Setting up the wireless receiver for the fi rst time

1. Connect the power cord to the wireless receiver to the outlet.2. Turn on the main unit : The sound bar and wireless receiver will be automatically connected. - Yellow - green LED on the wireless receiver turns on.

Manually pairing wireless receiver

When your connection is not completed, you cansee the red LED on the wireless receiver and rearspeakers are not made sound. To solve the problem,follow the below steps.1. Press PAIRING button on the rear of the wireless receiver.

- The yellow - green LED on the wireless receiver blinks quickly.

2. Turn on the main unit - Paring is completed. The yellow - green LED on the wireless receiver turns on.

REAR SPEAKERS CONNECTION (SOLD SEPARATELY)


HIDDEN MODE KEYS

EEPROM EDIT Main unit ‘ (Volume)’ + Remote control ‘NIGHT ON’

EEPROM CLEAR (Initialize) Main unit ‘ (Volume)’ + Remote control ‘'ASC ’

VERSION CHECK Main unit ‘ (Volume)’ + Remote control ‘ (Play/Pause)’

HIDDEN KEY MODE


1. Preparation 1) SL4Y Series Units : Main Unit, Wireless Subwoofer Unit, Rear Speaker Unit(optional).2) SL4Y RCU.3) USB Memory.4) Android Device with “Music Flow Bluetooth” App for FOTA update, “Version Check APP” for Version Check.

※ Take care not to power off during update. ※ Do format USB memory before update (FAT32 f le system).

FIRMWARE UPDATE GUIDE

<Main Unit>Necessary

<Wireless Subwoofer Unit>If wireless subwoofer rx module

of primary unit is updated.

<USB Memory>for USB update

<Rear Speaker Unit>Optional as model suff x

If wireless rear rx module is updated

<RCU>Necessary


2. USB Update Step 1. Prepare SL4 update binaries.

Update module Prefi x & Extension Filename Sample

DSP DSP_SL4Y*.ROM DSP_SL4_1812100_PRO1_rev1619.rom

Wireless Subwoofer Tx WOOFERTX_SL4Y*.BIN WOOFERTX_SL4_190007_181206_checksum_C7CA.bin

Wireless Subwoofer Rx WOOFERRX_SL4Y*.BIN WOOFERRX_SL4_191008_181206_checksum_90BE.bin

Wireless Rear Tx REARTX_SL4Y*.BIN REARTX_SL4_BAR_19.40.06_CHECKSUM_BEA0.bin

Wireless Rear Rx REARRX_SL4Y*.BIN REARRX_SL4_Ver185001_171128_checksum_DFDF.bin

PEQ PEQ_SL4Y*.BIN PEQ_SL4_1812070_PRO1_0EAD.bin

Option OPT*.BIN OPTION_SL4Y_EUS.bin * SLx : “SL4”, depends on model option.

Step 2. Copy all updated SL5/ SL6 binaries to USB memory.

Step 3. Power on SL5/ SL6 main unit.

Step 4. If there is an updated wireless subwoofer rx binary in update list, you need to pair between main unit and subwoofer unit before start update.

Step 5. If there is an updated wireless rear rx binary in update list, you need to pair between main unit and rear speaker unit before start update.

Step 6. Press Function key to change function to USB. Verify whether USB function is or not by VFD.

Step 7.Attach USB which has update binaries to the USB slot back of SL4Y main unit.

Step 8. Update will start automatically. VFD Model : Check VFD what module is in progress one by one.

USB

Update module VFD display

DSP

Option

PEQ

Wireless Subwoofer Rx

Wireless Subwoofer Tx

Wireless Rear Tx

Wireless Rear Rx

D-UP

OP-UP

EQ-UP

WR 00

WT 00

RT 00

RR 00

<SL4Y Series VFD Display in Update>※ The numbers in VFD display of wireless modules will increase in progress as progress percent from 00 to 100.


USB Update Step 9. SL4Y main unit will be off automatically after update f nish.

Step 10. Power on SL4Y main unit again.

Step 11. Check the current versions to verify whether the update was successfully completed or not.

1) Press “Version Check” hidden key • Version Check Hidden Key : Press Set “Vol-” + RCU “Play/Pause” for 3secs.

2) SL4Y shows the version of all modules in the order shown below. • The order that SL4Y shows version in version check hidden mode. DSP Wireless Subwoofer Tx Wireless Subwoofer Rx Wireless Rear Tx Wireless Rear Rx PEQ Option

3) Compare the version VFD shows and you updated.

+

Module VFD display sample

DSP

Wireless Subwoofer Tx

Wireless Subwoofer Rx

Wireless Rear Tx

Wireless Rear Rx

PEQ

Option* Press Play/pause button to see

next option value.

E1812100

WT190007

WR191008

RT194006

RR185001

Q1812070

OP00-00

<SL4 VFD Display in Version Display>


SPECIFICATIONS

• GENERALPower consumption Refer to the main label. Networked standby : 0.5 W (If all network ports are activated.)AC adapter Model : DA-38A25 Manufacturer : Asian Power Devices Inc. Input : 100 - 240 V ~ 50 - 60 Hz Output : 25 V 1.52 ADimensions (W x H x D) Approx. 890.0 mm x 57.0 mm x 85.0 mm With footOperating temperature 5 °C to 35 °COperating humidity 5 % to 90 %Bus Power Supply (USB) 5 V 500 mAAvailable Digital Input AudioSampling Frequency 32 kHz, 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHzAvailable Digital Input Audio format Dolby Audio, DTS Digital Surround, PCM

• INPUT/OUTPUTOPTICAL IN 3 V (p-p), Optical jack x 1

• AMPLIFIER (RMS Output)Total 300 W RMSFront 50 W RMS x 2 (4 Ω at 1 kHz, THD 10 %)Subwoofer 200 W RMS (3 Ω at 80 Hz, THD 10 %)

• WIRELESS SUBWOOFERPower requirements Refer to the main label on the wireless subwoofer.Power consumption Refer to the main label on the wireless subwoofer.Type 1 Way 1 SpeakerImpedance 3 ΩRated Input Power 200 WMax. Input Power 400 WDimensions (W x H x D) Approx. 171.0 mm x 390.0 mm x 261.0 mm

SPK8-S (SPK8-S, S78S1-S), SOLD SEPARATELY• WIRELESS RECEIVER

Power requirements Refer to the main label on the wireless receiver.Power consumption Refer to the main label on the wireless receiver.Rear 70 W RMS x 2 (3 Ω at 1 kHz, THD 10 %)Dimensions (W x H x D) Approx. 60.0 mm x 220.0 mm x 175.0 mm

• REAR SPEAKERS (EACH)Type 1 Way 1 SpeakerImpedance 3 ΩRated Input Power 70 W RMSMax. Input Power 140 W RMSDimensions (W x H x D) Approx. 100.0 mm x 140.0 mm x 100.0 mm

• Designs and specifications are subject to change without prior notice.


SECTION 2

CABINET & MAIN CHASSIS

CONTENTS

DISASSEMBLY INSTRUCTIONS ..................................................................................................................... 2-21. HOW TO DISASSEMBLE THE MAIN SET .............................................................................................. 2-2

EXPLODED VIEWS ........................................................................................................................................... 2-71. MAIN UNIT SECTION ............................................................................................................................... 2-72. WIRELESS SUBWOOFER SECTION .................................................................................................... 2-113. PACKING ACCESSORY SECTION ....................................................................................................... 2-15


DISASSEMBLY INSTRUCTIONS

Figure 1-2

Figure 1-1

1. HOW TO DISASSEMBLE THE MAIN SET

2) Remove the Case Bottom Assembly.

1) Remove the 19 screws.


Figure 1-4

Figure 1-3

HOW TO DISASSEMBLE THE MAIN SET

4) Remove the SPK Chamber L/R Assembly.

3) Remove the 2 screws, Disconnect the Harmess/FFC cables (KEY, SPK) and Remove the Main PCB Assembly.


Figure 1-6

Figure 1-5


6) Remove the 4 screws and Disconnect FFC cables (BT, Wireless).

5) Remove the L/R Deco Assembly.

BT

Wireless


Figure 1-8

Figure 1-7


8) Remove the EMI Shield Tape of Bottom side.

7) Remove the EMI Shield Tape.


Figure 1-9

HOW TO DISASSEMBLE THE MAIN SET9) Disassembly f nish.

Copyright © 2019 LG Electronics Inc. All rights reserved.Only for training and service purposes.

F

H CABLE1

CD

B/TA52

264

CABLE2

MAIN

F

JJ

DC

AB

B

G

A46

WIRELESSA54

CABLE3

I

G

I

A

A42

262266

A41

H

253

A55

CABLE5

CABLE6

CABLE4

WIRELESSA54

265

E

EXPLODED VIEWS1. MAIN UNIT SECTION

2-7 2-8

A80R

A80L


2-122-11

954

955

D

E

WIRELESS

SMPS

AMPB

A

G

E

D

B

F

G

C

C

F

958

A900

951

A45W

A47WCN901

A49WA54W

959

A

300W

2. WIRELESS SUBWOOFER SECTIONNOTES) THE EXCLAMATION POINT WITHIN AN

EQUILATERAL TRIANGLE IS INTENDED TO ALERT THE SERVICE PERSONNEL TO THE PRESENCE OF IMPORTANT SAFETY INFORMATION IN SERVICELITERATURE.


300 Power cord

833 AC adapter 900 Remote control

836 Screws (2)

835 Wall bracket

837 Holder, foot

806 Optical cable

�Optional Part

�

3. PACKING ACCESSORY SECTION


SECTION 3 ELECTRICAL

CONTENTS

WIRING DIAGRAM ............................................................................................................................................ 3-2

BLOCK DIAGRAMS .......................................................................................................................................... 3-31. SYSTEM BLOCK DIAGRAM .................................................................................................................. 3-32. POWER BLOCK DIAGRAM ................................................................................................................... 3-4

ONE POINT REPAIR GUIDE ............................................................................................................................ 3-51. NO BOOTING WHEN YOU TURN THE UNIT ON, NO MESSAGE OR “HELLO” ON FRONT PANEL ........ 3-52. NO SOUND ............................................................................................................................................. 3-93. PROTECTION ERROR ......................................................................................................................... 3-12

ELECTRICAL TROUBLESHOOTING GUIDE ................................................................................................. 3-141. ADAPTER POWER CIRCUIT ............................................................................................................... 3-142. KEY PART ............................................................................................................................................ 3-233. USB FUNCTION ................................................................................................................................... 3-244. OPTICAL FUNCTION ........................................................................................................................... 3-25

WAVEFORMS OF MAJOR CHECK POINT .................................................................................................... 3-261. CRYSTAL .............................................................................................................................................. 3-262. FLASH MEMORY ................................................................................................................................. 3-263. TACT KEY ............................................................................................................................................. 3-274. USB ....................................................................................................................................................... 3-285. REMOTE CONTROL ............................................................................................................................ 3-296. OPTICAL ............................................................................................................................................... 3-307. FM ......................................................................................................................................................... 3-31

CIRCUIT VOLTAGE CHART ........................................................................................................................... 3-33

PRINTED CIRCUIT BOARD DIAGRAMS ....................................................................................................... 3-351. MAIN P. C. BOARD DIAGRAM ............................................................................................................ 3-352. KEY P. C. BOARD DIAGRAM .............................................................................................................. 3-37


US

B C

N50

6 C

N50

3

LCD

WIR

ELE

SS

M

OD

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R

EAR

BO

X W

IRE

LES

S

MO

DU

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WO

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R

BT

MO

DU

LE

OOPT

ICAL

TU

NER

26 PIN FFC CABLE

26 P

IN

FFC

CAB

LE

12 P

IN

FFC

CAB

LE

2 PIN HARNESS

REM

OC

ON

E

CN

502

JK300 DC JACK

CN704 CN703

CN

505

FR

FL

MAI

N P

CB

1.

2T F

R4-

4LAY

ER

KEY

PCB

1.

2T F

R4

2LAY

ER

CN

504

14 PIN FFC CABLE

WIRING DIAGRAM


TAC

T-KE

Y

US

B D

P/D

N

RM

C

Flas

h fo

r DS

P(2

MBy

te)

SP

I

Flas

h fo

r EQ

(1M

Byte

)

FRO

NT

LCD

MB8

811

C1

BT_

CLK

/DA

T, B

T_R

X/TX

, BT_

RS

T

FL/T

WL

FR/T

WR

FL_P

/N, F

R_P

/N

AM

P_P

DN

(RS

T)

AM

P_F

AU

LT/C

LIP

0/P

RO

TEC

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Wire

less

Woo

fer

Wire

less

Mod

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DE

TO

ptic

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AMP

27M

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PO

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R/F

UN

C/V

OL+

/-

MAI

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IC50

1C

resc

endo

3+

IC40

2

TUN

ER

TUN

ER

_CE

/CLK

DA

T/R

ST

32.7

68 K

Hz

ADAP

TOR

25 VW

irele

ssR

ear B

ox

Wire

less

Mod

ule

Rx

WL_

MU

TE/IN

T_R

R/M

SG

_RD

Y_R

RW

L_C

LK_R

R/D

AT_

RR

/5

GH

z

BC

K/L

RC

K/A

DA

TA2_

RR

SP

IFl

ash

(1 M

B)

Wire

less

Mod

ule

TX

TUN

ER

_L/ T

UN

ER

_R

LCD

_STB

/RS

T/C

D/C

LK/D

AT

50W

50W

200W

60W

+

60W

New

Rea

r Wire

less

Rea

dy

BLOCK DIAGRAMS

1. SYSTEM BLOCK DIAGRAM


DCDC[2A]

PVDD

12 VA

ADATOR(25 V) AMP

VD13ADC

1.3 VA

IC501Crescendo 3+

WIRELESSModule

WL_3V3

3.3 VA

BT Module

RCU, STB-LED

OPTICAL

DCDC DCDC

SwitchingTR

+12 V

1.35 V5.1 VA

VD33USB

VD33PLL

VD33

LDO

350 mA

NC

20 mA

10 mA

50 mA

IC302 IC300 IC303

AMP, Front LED*4ea

Switch

P_CTRL

P_CTRL

IC309

IC312

10 mA

100 mA

10 mA

20 mA

100 mA

100 mA

VCC33

Q301

USBLCD

500 mAUSB_5 VSwitchIC306

VD33

3.3 VA

3.3 VA

DCDC

IC301

SwitchWL_P_CTRL_WFIC310

VD33ADAC

VD33AADC

10 mA

NC

TUNER50 mATUNNER_3.3 V

LDOIC311

WIRELESSModule

RBOX_3V3 100mASwitchWL_P_CTRL_RRIC313

VCC_5 V 200 mA

2. POWER BLOCK DIAGRAM


ONE POINT REPAIR GUIDE

1. NO BOOTING WHEN YOU TURN THE UNIT ON, NO MESSAGE OR “HELLO” ON FRONT PANEL

When you turn on your set, no message on the front panel, and stand-by LED doesn’t work.

1-1. IC302 System 12 VA (No 12 VA)1-1-1. SolutionReplace MAIN board.

1-1-2. How to troubleshoot (Countermeasure)1) Please check 25 VA of IC302 pin2 (VIN).2) If 25 VA is abnormal, please check adapter.3) If 25 VA is OK, but 12 VA is abnormal pin3 of IC302 (VOUT), replace MAIN board.

1-1-3. Service hint (Any picture / Remark)

< MAIN board top view >

2

R4

05

R4

07

R 4 0 8

R 4 0 9

R3

A3

R3

A4

R3

A5

R3

A6

C N 4 0 2

R5

A5

X4

01

C 5 A 1

C 5 A 2

F 3 0 0

F 3 0 1

C4

31

C 4 3 2

C4

33

C4

34

C4

35

C4

36

C4

37

C 4 3 8 C 4 3 9

C 4 4 0

C4

46

Q 3 0 0 Q 3 0 1

Z D 5 0 4

L 3 0 0

L 3 0 1

L 3 0 2

F M

R R 5 0 3

RR

50

5R

R5

06

RR

50

7R

R5

08

RR

50

9

RR

51

0R

R5

11

RR

51

2R

R5

13

RR

51

4R

R5

15

RR

51

6R

R5

17

FB

30

3

F B 3 0 4

FB

30

5

F BR 3 0 3

R C F 5 0 0

F B 3 1 4

F B 3 1 6 JK

50

2

FB

31

8R 3 0 8

R 3 1 0

R 3 1 2

R3

15

RC

50

20

3

04

05

06

RC

50

9

R 3 2 7

10

CN

50

0

11

12

CN502

13

14

15

18

19

R 5 2 8

R3

38

R3

39

22

23

C 3 0 0

R4

C3

C 3 0 7

C3

08

C3

09

C3

10

5 4 0

C3

11

R 5 4 1

C 3 1 2

C 3 1 3

C3

14

C3

15

C3

16

C3

17

C3

18

C3

19

R5

49

C4

A4

C 3 2 0

C4

A5

C3

21

C4

A6

C3

22

R 5 5 2

C 3 2 3

R3

65

R 5 5 9

R3

66

R3

68

C 3 3 0

C 3 3 1

5 6 1

C 3 3 3

R3

70

C 3 3 4

R 3 7 1

R3

75

R3

80

R3

81

C

T P _ G N D

C 5 4 7

C3

54

C 5 4 8

C 5 4 9

C3

55

C3

56

WR

50

5W

R5

06

WR

50

7W

R5

08

WR

50

9

D3

01

WR

51

0

C3

64

WR

51

1W

R5

12

WR

51

3

C3

67

C3

70

C 3 7 9

L4

06

L 4 0 7

IC3

00

C 3 8 1

I C 3 0 1

C 3 8 2

IC3

02

C 3 8 3

I C 3 0 9

C3

90

IC3

10

IC3

11

C 3 9 1

WC

50

2

C 3 9 2

C 3 9 3

I C 3 1 3

WC

50

3

C 3 9 4

WC

50

4

C 3 9 5

WC

50

5W

C5

06

WC

50

9

WC

51

3W

C5

14

WC

51

5

WC

51

9

WC

52

0

WC

52

2W

C5

23

R4

N4

FB

40

1

R4

N5

FB

40

2

F B 4 0 3

F B 4 0 4

R4

N8

R 5 F 2

R 5 F 1

C 5 F 2

C 5 F 1

F B 5 1 0

I C 4 0 2

C306 100nF

DGND

C312

10uF

/35V

R328

100K

R335

100K

R300

51K

(1%

)

DGND

PVDD

C307100nF/50V

C351

33pF

PWR_GD

C30010uF

/35V

12VA

R305

3.3K (1%)

C32310uF/35VNC

DGNDR301

47K

(1%

)

FB303UBW2012-121F

R306 22

C32010uF

/35V

C302

100n

F

C313

10uF

/35V

IC3021

PG2

IN3

SW4

GND5 BST

6 EN/SYNC

7 VCC

8 FB

L302

10UH

DGND

R307

390K

R340

56K

[25VA TO 12VA]

VOUT = 0.792x(47K/3.3K+1)= 12.072V

IC302IC302

L302L302



R31262K(1%)

R3278.2K

(1%)

DGND

C314100nF/50V

R355 33

C31010uF

/35V

C31610uF/16V

12VA

C30810uF/35V

R303

100K

DGND

5.1VA

C31910pF

DGND

C32110uF/16VC303 1uF(1)

C31810uF/16V

R31013K(1%)

DGNDDGND

DGND

IC3001VIN2SW3GND4 BST

5 EN

6 FB

D301

RCla

mp0

582B1C

2A3C

R346390K

R311150K

L300

10UH

FB304UBW2012-121F

VOUT = 0.798x((62K+8.2K)/13K+1)= 5.1V

[12VA TO 5.1VA]

NO BOOTING WHEN YOU TURN THE UNIT ON, NO MESSAGE OR “HELLO” ON FRONT PANEL

When you turn on your set, it will blank / no message on front panel / doesn’t work.

1-2. IC300 System 5.1 V (No 5.1 VA)1-2-1. SolutionCheck MAIN board.

1-2-2. How to troubleshoot (Countermeasure)1) Please check 5.1 VA of IC300 pin22) If 5.1 VA is abnormal, replace MAIN board.



2

R4

05

R4

07

R 4 0 8

R 4 0 9

R3

A3

R3

A4

R3

A5

R3

A6

C N 4 0 2

R5

A5

X4

01

C 5 A 1

C 5 A 2

F 3 0 0

F 3 0 1

C4

31

C 4 3 2

C4

33

C4

34

C4

35

C4

36

C4

37

C 4 3 8 C 4 3 9

C 4 4 0

C4

46

Q 3 0 0 Q 3 0 1

Z D 5 0 4

L 3 0 0

L 3 0 1

L 3 0 2

F M

R R 5 0 3

RR

50

5R

R5

06

RR

50

7R

R5

08

RR

50

9

RR

51

0R

R5

11

RR

51

2R

R5

13

RR

51

4R

R5

15

RR

51

6R

R5

17

FB

30

3

F B 3 0 4

FB

30

5

F BR 3 0 3

R C F 5 0 0

F B 3 1 4

F B 3 1 6 JK

50

2

FB

31

8R 3 0 8

R 3 1 0

R 3 1 2

R3

15

RC

50

20

3

04

05

06

RC

50

9

R 3 2 7

10

CN

50

0

11

12

CN502

13

14

15

18

19

R 5 2 8

R3

38

R3

39

22

23

C 3 0 0

R4

C3

C 3 0 7

C3

08

C3

09

C3

10

5 4 0

C3

11

R 5 4 1

C 3 1 2

C 3 1 3

C3

14

C3

15

C3

16

C3

17

C3

18

C3

19

R5

49

C4

A4

C 3 2 0

C4

A5

C3

21

C4

A6

C3

22

R 5 5 2

C 3 2 3

R3

65

R 5 5 9

R3

66

R3

68

C 3 3 0

C 3 3 1

5 6 1

C 3 3 3

R3

70

C 3 3 4

R 3 7 1

R3

75

R3

80

R3

81

C

T P _ G N D

C 5 4 7

C3

54

C 5 4 8

C 5 4 9

C3

55

C3

56

WR

50

5W

R5

06

WR

50

7W

R5

08

WR

50

9

D3

01

WR

51

0

C3

64

WR

51

1W

R5

12

WR

51

3

C3

67

C3

70

C 3 7 9

L4

06

L 4 0 7

IC3

00

C 3 8 1

I C 3 0 1

C 3 8 2

IC3

02

C 3 8 3

I C 3 0 9

C3

90

IC3

10

IC3

11

C 3 9 1

WC

50

2

C 3 9 2

C 3 9 3

I C 3 1 3

WC

50

3

C 3 9 4

WC

50

4

C 3 9 5

WC

50

5W

C5

06

WC

50

9

WC

51

3W

C5

14

WC

51

5

WC

51

9

WC

52

0

WC

52

2W

C5

23

R4

N4

FB

40

1

R4

N5

FB

40

2

F B 4 0 3

F B 4 0 4

R4

N8

R 5 F 2

R 5 F 1

C 5 F 2

C 5 F 1

F B 5 1 0

I C 4 0 2

IC300IC300

L300L300




When you turn on your set, it will blank / no message on front panel / doesn’t work.

1-3. IC301 System 3.3 V (No 3.3 VA)1-3-1. SolutionReplace MAIN board.

1-3-2. How to troubleshoot (Countermeasure)1) Please check 3.3 VA of IC301 pin3.2) If 3.3 VA is abnormal, replace MAIN board.



R 4 0 8

R 4 0 9

R 5 A 0R 5 A 1

R 5 A 2

R 5 A 3R 5 A 4

R5

A6

R5

A7

OP

5

O P 6

OP

7

C4

37

C 4 4 0

L 3 0 1

Z D 5 1 1

L 3 0 8

R R 5 0 3

RR

50

5R

R5

06

RR

50

7R

R5

08

RR

50

9

RR

51

0R

R5

11

RR

51

2R

R5

13

RR

51

4R

R5

15

RR

51

6R

R5

17

FB

30

5

FB

30

6

FB

31

0

F B 3 1 4

9

F B 3 1 5

F B 3 1 6

FB

31

7

R 3 0 8

R 5 0 5R 5 0 6

R 5 0 7

R 3 1 4

R5

08

R5

09

R 3 1 9

RC

50

20

3

R 5 1 0

04

05

R5

12

06

R5

14

RC

50

9

R 5 1 5

R5

16

R 5 1 8

R 5 1 9

10

CN

50

0

11

12

CN50

13

14

R 5 2 0

15

R 5 2 1

18

19

R 5 2 5

R 5 2 6

R 5 2 9

22

23

R 5 3 0

R 5 3 1

R 5 3 2

R5

33

C 3 0 4

R5

34

C3

05

R 5 3 5

C3

09

C5

02

R 5 4 0

R 5 4 1

R 5 4 2

R 5 4 3

C 5 0 8

R 5 4 4

C 5 0 9

R 5 4 7R 5 4 8

X 5 0 0

C5

10

M C L K

R5

50

C 5 1 5

R5

51

C3

22

R 5 5 2

C 5 1 7

R 5 5 3

C 3 2 4

C 5 1 8

R 5 5 4

R5

55

C3

26

R5

56

C 3 2 7

R5

57

C3

29

R 5 5 9

R5

60

C 3 3 1

50

1

R 5 6 1

R5

62

C 3 3 3

R5

63

C 3 3 4

R5

64

R5

65

C3

35

R5

66

C3

37

R5

68

C3

39

R5

69

R 5 7 4

R 5 7 5R 5 7 6

O C P

R 5 7 8

R 5 7 9R 5 8 0

C 5 4 4

R 5 8 1

C 5 4 5

R 5 8 2

C 5 4 6

R 5 8 3

C3

54

R 5 8 4

R 5 8 5R 5 8 6

W R 5 0 3

WR

50

5W

R5

06

R 3 9 6

WR

50

7W

R5

08

WR

50

9

C 5 5 3

C 5 5 5

C5

56

C5

57

WR

51

0

C3

64

WR

51

1

C3

65

WR

51

2

R5

96

WR

51

3

C3

67

R5

97

WR

51

4

C3

68

R 5 9 8

WR

51

5

R 5 9 9

WR

51

6W

R5

17

D 5 0 2

C3

70

C 5 6 4

C3

71

C 5 7 0

C 3 8 1

I C 3 0 1

C 3 8 2C 3 8 3

I C 3 0 3

C 5 7 7

IC3

06

C 3 8 7

C 3 8 8

I C 5 0 1

IC3

10

C 3 9 1

WC

50

2

I C 3 1 2

C 3 9 2

I C 3 1 3

WC

50

3

WC

50

4

C 5 8 8

WC

50

5W

C5

06

C3

96C

39

8

WC

50

9

WC

51

0W

C5

11

WC

51

2W

C5

13

WC

51

4W

C5

15

WC

51

8

WC

51

9

WC

52

0

WC

52

2W

C5

23

R 5 F 2

R 5 F 1

C 5 F 2

C 5 F 1

F B 5 1 0

JK501

5.1VA 3.3VA

C32210uF/10V

C35410uF/10V

DGND

FB305UBW2012-121F

DGND

IC301

1EN2GND3LX4 IN

5 FB

C30910uF/10V

R316240K(1%)

R357100K

(1%)

R30924K(1%)

C367100nF/16V

C370100nF/16V

R356 4.7K

C36410uF/10V

R3080 OHM(1)

NCC32847pF

DGND

L301

470nH

VOUT = 0.6x(1+100k/((240k*24k)/(240k+24k)))= 3.35V

[5.1VA TO 3.3VA]

VOUT = 0.6x(1+(R357/(R309//R316)))

IC301IC301

L301L301



When you turn on your set, it will blank / no message on front panel, LCD doesn’t work.

1-4. LCD System power VCC_5V1-4-1. SolutionReplace MAIN/ LCD Module.

1-4-2. How to troubleshoot (Countermeasure)1) Please check CN502 VCC_5V of CN502 pin1.2) If VCC_5 V is abnormal, replace MAIN board.3) If VCC_5 V OK, replace LCD module.



2

R4

05

R4

07

R 4 0 8

R 4 0 9

R3

A3

R3

A4

R3

A5

R3

A6

C N 4 0 2

R5

A5

X4

01

C 5 A 1

C 5 A 2

F 3 0 0

F 3 0 1

C4

31

C 4 3 2

C4

33

C4

34

C4

35

C4

36

C4

37

C 4 3 8 C 4 3 9

C 4 4 0

C4

46

Q 3 0 0 Q 3 0 1

Z D 5 0 4

L 3 0 0

L 3 0 1

L 3 0 2

F M

R R 5 0 3

RR

50

5R

R5

06

RR

50

7R

R5

08

RR

50

9

RR

51

0R

R5

11

RR

51

2R

R5

13

RR

51

4R

R5

15

RR

51

6R

R5

17

FB

30

3

F B 3 0 4

FB

30

5

F BR 3 0 3

R C F 5 0 0

F B 3 1 4

F B 3 1 6 JK

50

2

FB

31

8R 3 0 8

R 3 1 0

R 3 1 2

R3

15

RC

50

20

3

04

05

06

RC

50

9

R 3 2 7

10

CN

50

0

11

12

CN502

13

14

15

18

19

R 5 2 8

R3

38

R3

39

22

23

C 3 0 0

R4

C3

C 3 0 7

C3

08

C3

09

C3

10

5 4 0

C3

11

R 5 4 1

C 3 1 2

C 3 1 3

C3

14

C3

15

C3

16

C3

17

C3

18

C3

19

R5

49

C4

A4

C 3 2 0

C4

A5

C3

21

C4

A6

C3

22

R 5 5 2

C 3 2 3

R3

65

R 5 5 9

R3

66

R3

68

C 3 3 0

C 3 3 1

5 6 1

C 3 3 3

R3

70

C 3 3 4

R 3 7 1

R3

75

R3

80

R3

81

C

T P _ G N D

C 5 4 7

C3

54

C 5 4 8

C 5 4 9

C3

55

C3

56

WR

50

5W

R5

06

WR

50

7W

R5

08

WR

50

9

D3

01

WR

51

0

C3

64

WR

51

1W

R5

12

WR

51

3

C3

67

C3

70

C 3 7 9

L4

06

L 4 0 7

IC3

00

C 3 8 1

I C 3 0 1

C 3 8 2

IC3

02

C 3 8 3

I C 3 0 9

C3

90

IC3

10

IC3

11

C 3 9 1

WC

50

2

C 3 9 2

C 3 9 3

I C 3 1 3

WC

50

3

C 3 9 4

WC

50

4

C 3 9 5

WC

50

5W

C5

06

WC

50

9

WC

51

3W

C5

14

WC

51

5

WC

51

9

WC

52

0

WC

52

2W

C5

23

R4

N4

FB

40

1

R4

N5

FB

40

2

F B 4 0 3

F B 4 0 4

R4

N8

R 5 F 2

R 5 F 1

C 5 F 2

C 5 F 1

F B 5 1 0

I C 4 0 2

C5F62.2uF

3.3V

A

FB510PZ1608U221-1R4TF

LED-

LCD_STB

C5F1100nF

C5F210uF/10V(M)

VB0-

DGND

LCD_DAT

3.3VA

LCD_CD

R5F2 220 (M)

VCC_5V

R5F1 220 (M)

DGND

R5F5 0 NC

C5F310nF

R5F4 0 NC

R5F3 0 NC

R5F8 10M

LCD_STB

LCD_BL

R5F6 0 NC

DGND

VLCD

R5F7 0 NC

C5F5 0.33uF

LCD_DAT

VB1-

LCD_RST

LCD_CLK

LCD_CD

VB0+

VB1+

LED+

C5F42.2uF

LCD_CLK

LCD_RST

CN502

1 VLCD

2 VBO+

3 VB1+

4 VB1-

5 VB0-

6 VSS

7 VDD

8 SDA

9 SCK

10 CD

11 RSTB

12 CSB

13 LED-(K)

14 LED+(A)

Q502 1 COMMON

2 OUT3IN

Front_LCD

CN502CN502



2. NO SOUND

2-1. BLUETOOTH2-1-1. SolutionReplace MAIN board.

2-1-2. How to troubleshoot (Countermeasure)1) Please check status of Bluetooth cable connection. (at CN504 and BT module)2) Please check 3.3 VA (at pin1 of CN504). If 3.3 VA is OK, please check UART_RX, UART_TX, RESET, SCL, SDA, RTS, CST If no signal, please replace MAIN board.



1

R 4 0 8

R 4 0 9

R 5 A 0R 5 A 1

R 5 A 2

R5

A6

R5

A7

OP

5

O P 6

OP

7

C4

37

C 4 4 0

Z D 5 1 1

Z D 5 1 2

FL

50

0

R R 5 0 3

RR

50

5R

R5

06

RR

50

7R

R5

08

RR

50

9

RR

51

0R

R5

11

RR

51

2R

R5

13

RR

51

4R

R5

15

RR

51

6R

R5

17

FB

30

6

FB

31

F B 3 1 4

FB

50

9

F B 3 1 6

R 5 0 7

R 3 1 4

R5

08

R5

09

R 3 1 9

RC

50

2R

C5

03

R 5 1 0

RC

50

4

RC

50

5

R5

12

RC

50

6

R5

14

RC

50

9

R 5 1 5

R5

16

R 5 1 9

RC

51

0

C

RC

51

1R

C5

12

CN50

RC

51

3

CN503

RC

51

4

CN504

R 5 2 0

RC

51

5

R C 5 1 6

CN506

R C 5 1 7

RC

51

8

RC

51

9

R 5 2 5

R 5 2 6

R 5 2 9

RC

52

2R

C5

23

R 5 3 1

R 5 3 2

R5

33

C 3 0 4

R5

34

R 5 4 0

R 5 4 1

C5

05

R 5 4 2

C 5 0 6

R 5 4 3

R 5 4 4

R 5 4 7R 5 4 8

C5

10

M C L K

C5

13

R5

50

R5

51

C 5 1 9

R5

55

R5

60

C 3 3 1

WF

B5

01

R5

62

C 3 3 3

R5

63

C 3 3 4

R5

64

R5

65

C3

35

R5

66

R5

68

R5

69

R 5 7 4

R 5 7 5R 5 7 6

O C P

R 5 7 8

R 5 7 9R 5 8 0

C 5 4 4

R 5 8 1

C 5 4 5

R 5 8 2

C 5 4 6

R 5 8 3

R 5 8 5R 5 8 6

W R 5 0 3

WR

50

5W

R5

06

WR

50

7W

R5

08

WR

50

9

C 5 5 2

C 5 5 5

C5

56

C5

57

WR

51

0

R5

94

WR

51

1

R5

95

WR

51

2

R5

96

WR

51

3

R5

97

WR

51

4

C3

68

R 5 9 8

WR

51

5

R 5 9 9

WR

51

6W

R5

17

D 5 0 2

D 5 0 3

C 5 6 9C 5 7 0

C 3 8 1C 3 8 2C 3 8 3

I C 3 0 3

IC3

06

C 3 8 7

C 3 8 8

IC3

10

C 3 9 1

WC

50

2

C 3 9 2

I C 3 1 3

WC

50

3

WC

50

4

WC

50

5W

C5

06

WC

50

9

WC

51

0W

C5

11

WC

51

2W

C5

13

WC

51

4W

C5

15

W C 5 1 6

W C 5 1 7

WC

51

8

WC

51

9R

FB

50

1

WC

52

0

WC

52

2W

C5

23

Rear SPKSubwoofer

JK501

C519 10uF

BT_TX

BT_RST

BT_RX

BT_VCC

C505 10pF

C506 100nF

BT_DAT

BT_CLK

C513 10pF

C514 10pF

C551 10pF

BT_GND

BT_RST

UART_TX

BT_CLK

BT_DAT

UART_RX

DGND

DGND

FB509

C510100nF

DGND C552100nF

R555 1K

ZD511

12

3

ZD512

12

3

3.3VA

CN504

EAG62611102

1 VDD

2 RESET

3 CTS

4 RTS

5 UART_RX

6 GND

7 UART_TX

8 GND

9 SCL

10 SDA

BLUETOOTH

CN504CN504



NO SOUND

2-2. OPTICAL2-2-1. SolutionReplace MAIN board.

2-2-2. How to troubleshoot (Countermeasure)1) Please check 3.3 VA.2) If 3.3 VA is ok, please check OPT_IN signal (C548) when OPTICAL mode.3) If signal is abnormal, replace MAIN board.



1

2

R4

05

R4

07

R 4 0 8

R 4 0 9

R3

A3

R3

A4

R3

A5

R3

A6

C N 4 0 2

X4

01

F 3 0 0

F 3 0 1

C4

31

C 4 3 2

C4

33

C4

34

C4

35

C4

36

C4

37

C 4 3 8 C 4 3 9

C 4 4 0

C4

46

L 3 0 2

F M

R R 5 0 3

RR

50

5R

R5

06

RR

50

7R

R5

08

RR

50

9

RR

51

0R

R5

11

RR

51

2R

R5

13

RR

51

4R

R5

15

RR

51

6R

R5

17

FB

30

3F B

R 3 0 3

F B 3 1 4

F B 3 1 6 JK

50

2

R 3 1 0

R3

15

RC

50

2R

C5

03

RC

50

4

RC

50

5R

C5

06

RC

50

9

RC

51

0R

C5

11

RC

51

2

CN502

RC

51

3R

C5

14

RC

51

5

R C 5 1 6

CN506

R C 5 1 7

RC

51

8

RC

51

9

R 5 2 8

RC

52

2R

C5

23

C 3 0 0

R4

C3

C 3 0 7

C3

08

C3

10

5 4 0

R 5 4 1

C 3 1 2

C 3 1 3

C3

1

R5

49

C4

A4

C 3 2 0

C4

A5

C4

A6

C 3 2 3C 3 3 1

C 3 3 3

R3

70

C 3 3 4

R 3 7 1

R3

75

R3

80

R3

81

T P _ G N D

C 5 4 7

C 5 4 8

WR

50

5W

R5

06

WR

50

7W

R5

08

WR

50

9

WR

51

0W

R5

11

WR

51

2W

R5

13

C 3 7 9

L4

06

L 4 0 7

C 3 8 1C 3 8 2

IC3

02

C 3 8 3

IC3

10

C 3 9 1

WC

50

2

C 3 9 2

C 3 9 3

I C 3 1 3

WC

50

3

C 3 9 4

WC

50

4

WC

50

5W

C5

06

WC

50

9

WC

51

3W

C5

14

WC

51

5

WC

51

9R

FB

50

1

WC

52

0

WC

52

2W

C5

23

R4

N4

FB

40

1

R4

N5

FB

40

2

F B 4 0 3

F B 4 0 4

R4

N8

I C 4 0 2

Rear SPK

OPTICAL JACK,96KHz

R528 100

3.3VA

OPT_IN

DGND

R549 82

C54815pF

C5471uF

JK502

EAG37842010

1 OUT

2 GND

3 VCC

OPTICAL

C548C548

JK502JK502


USB_GND

USB5V

USB_N

C56910pF

NC

C57010pF

NC

USB_PUSB_P

USB_N

JK501

EAG62571101

1 5V

2 D-

3 D+

4 DGND

DGND

FL50012

3 4

C544100nF

DGND

USB_5V

D502D503

3 1

2

C54610uF

C545220uF

R5944.7

R5954.7

USB


NO SOUND

2-3. USB2-3-1. SolutionReplace MAIN board.

2-3-2. How to troubleshoot (Countermeasure)1) Please check USB_5V at JK501 pin1.2) If soldering status and voltage has abnormal status, replace MAIN board.



1

R 4 0 8

R 4 0 9

R 5 A 0R 5 A 1

R 5 A 2

R5

A6

R5

A7

OP

5

O P 6

OP

7

C4

37

C 4 4 0

Z D 5 1 1

Z D 5 1 2

FL

50

0

R R 5 0 3

RR

50

5R

R5

06

RR

50

7R

R5

08

RR

50

9

RR

51

0R

R5

11

RR

51

2R

R5

13

RR

51

4R

R5

15

RR

51

6R

R5

17

FB

30

6

FB

F B 3 1 4

FB

50

9

F B 3 1 6

R 5 0 7

R5

08

R5

09

R 3 1 9

RC

50

2R

C5

03

R 5 1 0

RC

50

4

RC

50

5

R5

12

RC

50

6

R5

14

RC

50

9

R 5 1 5

R5

16

R 5 1 9

RC

51

0R

C5

11

RC

51

2

CN50

RC

51

3

CN503

RC

51

4

CN504

RC

51

5

R C 5 1 6

CN506

R C 5 1 7

RC

51

8

RC

51

9

R 5 2 5

R 5 2 6

R 5 2 9

RC

52

2R

C5

23

R 5 3 1

R 5 3 2

R5

33

C 3 0 4

R5

34

R 5 4 0

R 5 4 1

C5

05

R 5 4 2

C 5 0 6

R 5 4 3

R 5 4 4

R 5 4 7R 5 4 8

C5

10

M C L K

C5

13

R5

50

R5

51

C 5 1 9

R5

55

R5

60

C 3 3 1

WF

B5

01

R5

62

C 3 3 3

R5

63

C 3 3 4

R5

64

R5

65

C3

35

R5

66

R5

68

R5

69

R 5 7 4

R 5 7 5R 5 7 6

O C P

R 5 7 8

R 5 7 9R 5 8 0

C 5 4 4

R 5 8 1

C 5 4 5

R 5 8 2

C 5 4 6

R 5 8 3

R 5 8 5R 5 8 6

W R 5 0 3

WR

50

5W

R5

06

WR

50

7W

R5

08

WR

50

9

C 5 5 2

C 5 5 5

C5

56

C5

57

WR

51

0

R5

94

WR

51

1

R5

95

WR

51

2

R5

96

WR

51

3

R5

97

WR

51

4

C3

68

R 5 9 8

WR

51

5

R 5 9 9

WR

51

6W

R5

17

D 5 0 2

D 5 0 3

C 5 6 9C 5 7 0

C 3 8 1C 3 8 2C 3 8 3

I C 3 0 3

IC3

0

C 3 8 7

C 3 8 8

IC3

10

C 3 9 1

WC

50

2

C 3 9 2

I C 3 1 3

WC

50

3

WC

50

4

WC

50

5W

C5

06

WC

50

9

WC

51

0W

C5

11

WC

51

2W

C5

13

WC

51

4W

C5

15

W C 5 1 6

W C 5 1 7

WC

51

8

WC

51

9R

FB

50

1

WC

52

0

WC

52

2W

C5

23

Rear SPKSubwoofer

JK501

JK501JK501



3. PROTECTION ERRORNo display or No Sound.

3-1. D(DC) PROTECTION3-1-1. SolutionReplace MAIN board.

3-1-2. How to troubleshoot (Countermeasure)1) Check DC Voltage of speaker out FL+/- (CN703 pin1, 2), FR +/- (CN704 pin1, 2, 3)2) Check resistor crack, cold solder of ESS IC out [FL+(R570), FL-(R571), FR+(R572), FR-(R573)].3) If ESS (IC501) out is ok and speaker out (FL+/-, FR+/-) has DC voltage replace MAIN board.



MES

2

R3

A1

R3

A2

R3

A3

F R 2 +

R3

A4

R3

A5

F R 2 -

R3

A6

R5

A5

R 7 A 1

F L 2 +

F L 2 -

R7

C2

R7

C3

C 5 A 1

C 5 A 2

F 3 0 0

F 3 0 1

C 7 C 5

C 7 C 6

Q 3 0 0 Q 3 0 1

Z D 5 0 4

L 3 0 2

K E Y _ G

L709

L710

FB

30

3

JK

30

0

F B 3 1 3

F B 5 0 7

R C F 5 0 0

F B 5 0 8

C N 5 0 5

R 5 2 8

CN703

R3

38

CN704

R3

39

C 3 0 0

C 3 0 1C 3 0 7

C 5 0 3

C3

11

C 3 1 2

C 3 1 3

C3

15

C3

17

C 3 2 0

C 3 2 3

R3

65

R3

66

R3

80

R3

81

C3

47

C 3 4 8

R3

88

7

C 5 4 8

C 5 4 9

C3

55

C3

56

C 7 4 4

C 7 4 5

C 7 4 6

C7

47

D 3 0 0

C 7 5 8

C 7 5 9

R7

95

R7

96

R7

97

R7

98

C 3 7 8

C 3 7 9

D7

02

D7

03

C7

67

C7

68

IC3

02

I C 3 0 9

C7

71

C7

72

C7

73

C7

74

C 7 7 7

C3

90

C 7 7 8C 7 7 9

C7

80

C7

83

C7

84

C7

85

C7

86

K E Y _ T P

R

L

SL4 / SL4Y / SL4F MainEAX68408202 Ver1.1FR4-4L 1.2T 2018.12.06 261X67.5

CN703CN703

CN704CN704


H:2

.55

mm

R7

A2

R7

A3

R 7 B 0

R7

B1

R 7 B 4

R7

B9

R7

C0

C7

A2

C7

A3

Z D

ZD

70

ZD

70

3

F R +

Q 7 0 8

Q 7 0 9

L7

09

L7

10

R3

0

R 3 0 1

R3

0

R 3 0 6

JK502

R3

07

F L +

F L -

R3

28

R7

15

R7

16

R3

3

C3

02

R3

40

C 3 0 6

R E M O _ T P

C7

07

C7

08

C 7 3 1

C7

36

C7

37

R7

74

C 7 3 8

C 3 5 1R 7 7 5

C 7 3 9

R 7 7 7

C7

41

R 7 8 2R 7 8 3R 7 8 4

R 7 8 5

C7

53

C7

54

C7

55

C7

56

IC7

03


PROTECTION ERRORNo display or No Sound.

3-2. B(BURNT) PROTECTION3-2-1. SolutionReplace MAIN board.

3-2-2. How to troubleshoot (Countermeasure)1) Check voltage 12 V of IC703 at pin1 ~ 2, if 12V has problem refer to STEP 1-1.2) If 12 V is OK, replace MAIN board.


IC703IC703

AMP_FAULT

C738 1uF

C736 100pF

R7A30

R782 100

C731 100nF

AMP_PROTECT

R775 47K

PGND

R783 NC

PGND

DC_PROTECTION

R702 27K

C739 1uF

PGND

R777 100

C730 1uF

R71547K

R703 10KZD702

Z02W3.9VNC

1

2

3C706 100pF

VCC33

IC703

26GND

1GVDD_AB

11GND

35OUT_B

3OC_ADJ

8DVDD

6INPUT_B

34GND

27OUT_D

33GND

7C_START

5INPUT_A

30PVDD_CD

9GND

28OUT_D

10GND

29PVDD_CD

4/RESET

31PVDD_CD

36PVDD_AB

2VDD

32OUT_C

12GND

25GND

13AVDD

14INPUT_C

23BST_D

24BST_C

15INPUT_D

22 GVDD_CD

16/FAULT

21 M3

17/OTW

18/CLIP

19 M120 M2

37PVDD_AB

38PVDD_AB

39OUT_A

40OUT_A

41GND

42GND

43BST_B

44BST_A

R7A2NC

ZD701KDZ13V-RTK/P

NC

C741 10uF

AMP_PDN

C737 1uF

R774 3.3

+12V

C708100pF

R7164.7K

C707100pF

R784 2.2K

ZD703Z02W3.9V

1

2

3

FL_OUT_N

FL_OUT_P

FR_OUT_P

FR_OUT_N

FR

ON

T L

FR

ON

T R

< MAIN board bottom view >


ELECTRICAL TROUBLESHOOTING GUIDE

IC301 is not 3.3 VA

Check F301 Voltage 25 VA

Check FB305 Voltage 5.1 VA

Check Adapter

Replace Main PCB

YES

YES

YES

NO

NO

Check FB304 Voltage 12 VA

Check R308 Voltage 3.3 VA

Replace Main PCB

Replace Main PCB

YES

YES

NO

NO

OK

1. ADAPTER POWER CIRCUIT



ADAPTER POWER CIRCUIT

IC303 is not 1.3 VA



Check Adapter

Replace Main PCB

YES

YES

YES

NO

NO



Replace Main PCB

Replace Main PCB

YES

YES

NO

NO

OK



Q301 is not 12 V

Check F301 Voltage 25 VA Check Adapter

Replace Main PCB

NO

YES

NO


Check R774Voltage 12 V

Check Q301 2pinVoltage 12 V

Check IC302

YES

YES YES

NO

NO

OKOK


YES



USB_5V is not 5 V



Check Adapter

Replace Main PCB

YES

YES

YES

NO

NO


Check FB306 Voltage 5 V

Replace Main PCB

Replace Main PCB

YES

YES

NO

NO

OK




Tuner is not 3.3 V



Check Adapter

Replace Main PCB

YES

YES

YES

NO

NO


Check R311 Voltage 3.3 V

Replace Main PCB

Replace Main PCB

YES

YES

NO

NO

OK




VD33ADAC_VD33AADC is not 3.3 V


Check FB305 Voltage 5.1 V A

Check Adapter

Replace Main PCB

YES

YES

YES

NO

NO


Check FB311 Voltage 3.3 V

Replace Main PCB

Replace Main PCB

YES

YES

NO

NO

OK




VCC33 is not 3.3 V



Check Adapter

Replace Main PCB

YES

YES

YES

NO

NO



Replace Main PCB

Replace Main PCB

YES

YES

NO

NO

Check FB313 Voltage 3.3 V Replace Main PCB

YES

NO

OK





WL_3V3 is not 3.3 V



Check Adapter

Replace Main PCB

YES

YES

YES

NO

NO



Replace Main PCB

Replace Main PCB

YES

YES

NO

NO


YES

NO

OK




RBOX_3V3 is not 3.3 V



Check Adapter

Replace Main PCB

YES

YES

YES

NO

NO



Replace Main PCB

Replace Main PCB

YES

YES

NO

NO


YES

NO

OK



KEY PART

Replace the Cable1

Check R520 Pull-up Resistor

YES

Check CN505 1, 2 pinVoltage 3.3 V Check the connecting cables

Check RA01, RA04, RA05, RA06

Replace the Key PCB

YES

NO

Check SWA01, SWA02, SWA03, SWA04

OK

YES YES

NO

NO

OK

2. KEY PART



USB PART

Refer to Power Part Troubleshooting

Check JK501 1pin Voltage 5.1 V

YES

Check FB306 Voltage 5.1 V Check IC306

Check JK501 pin2(D-), pin3(D+)

Replace Main PCB

YES

NO

Check Reading OK

IC501 pin35, pin36

YES YES

NO

NO

OK

3. USB FUNCTION



OPTICAL FUNCTION

Refer to Power Part Troubleshooting

Check IC501 pin65Input waveform Check C511

Replace Main PCB

YES

NO

OK

4. OPTICAL FUNCTION

Replace Main PCB

Check R549 3.3VA Voltage

YES

Check JK502 Check R528

YES YES

NO

NO


WAVEFORMS OF MAJOR CHECK POINT

1. CRYSTAL 2. FLASH MEMORY

FIG 1. X500 (27 MHz)

1

4

35

2

C550100nF

DGND

DGND

SF_CS

R559

0 OHM(1)NC

R552

0 OHM(1)

IC504

1CS#

2SO

3WP#

4VSS

5SI

6SCLK

7HOLD#

8VCC

R53610K

R539

10K

R53710K

R53810K

FB504PZ1608U221-1R4TF

3.3VA

For DSP(2MB)

1

R518510K

X50027MHz

1 IN/OUT 2FLOAT

3IN/OUT4 FLOAT

DGND

C51810pF

C51710pF

R556 0

R557 100

FIG 2. VCC, CS#, CLK, DO

2

3

4

5

VCC

CS#

CLK

DO


3. TACT KEY

FIG 3-2. Press Function Key

0.72 ~ 0.82 V

FIG 3-1. Press Power Key

1 ~ 1.13 V

6 6

FIG 3-3. Press VOL- Key FIG 3-4. Press VOL+ Key

0.424 ~ 0.485 V 0 V

6 6

6

VD33ADAC

C526 10uF

R5214.7K

R553

100

R567

0 NC

R58810K

C5641nF

R530

0

R519

47K

KEY

AMP_

CLIP

0

IC501

84RE

SET_

B

85SP

I_CS

2

86SP

I_CS

3

87SP

I_CL

K

88SP

I_DI

89SP

I_DO

90SP

I_W

P

91SP

I_HO

LD

92SP

DIF_

OUT

93SY

S_AD

C_A

94SY

S_AD

C_B

95SY

S_AD

C_C

96SY

S_AD

C_D

97PWM_VREF

98VD33ADAC

99VS33ADAC

DGND

VD33

3.3VA

DC_P

ROTE

CTIO

N

R520

4.7K

R554

100

DGND

RA01

680

RA03

1K

RA02

820

RA00

CA00100nF

SWA00

1 2

3 4

SWA01

1 2

3 4

SWA02

1 2

3 4

SWA03

1 2

3 4

SWA04

1 2

3 4

RA04

RA05750

RA06820

POWER FUNC.VOL+ VOL- WIFI


4. USB

FIG 4-1. USB 5 V FIG 4-2. USB D+

7 8

FIG 4-3. USB D-

9

98

7

USB_GND

USB5V

USB_N

USB_P

JK5011 5V

2 D-

3 D+

4 DGNDC544100nF

DGND

USB_5V

D502D503

3 1

2

C54610uF

C545220uF

USB


5. REMOTE CONTROL

FIG 5-1. Input Voltage

10

FIG 5-2. Low Timing

11

Item Measured Spec.

Input Level 3.3 V IR Receiver Spec: 2.7 ~ 5.5 V

“ Low” Timing 4.4 ms 3.6 ms ~ 5.04 ms

“ High” Timing 4.48 ms 4.08 ms ~ 5.04 msFIG 5-3. High Timing

12

1110

12

IR RECEIVER

REMOCON

DGND

C5A1100nF

R5A5100

C549100pF

3.3VA

C5A210uF

ZD504Z02W3.9V

12

3

RCF500

1G

ND

2VC

C3

OUT

4

GND

REMO_TP


14

13

1.3VA

R525

33

C511 10nF

R542

100

R544

100

R545

100

R546

100

R547

100

R551 100

R550 100

C555NC

675RK2.2

575RK2.2

385RK2.2 NC

R578

100

R526

47K

OPT_IN

R548

100

AMP_

PRO

TECT

AMP_FAULT

AMP_PDN

LCD_

DAT

LCD_

STB

P_CT

RL

WL_

P_CT

RL_W

F

REM

OCO

N

UART

_RX

UART

_TX

IC50160

SR[16]

61SR[17]

62SR[22]

63SR[23]

64SR[24]

65SR

[25]

66SR

[26]

67AU

X[7]

68AU

X[6]

69AU

X[5]

70AU

X[4]

71VD

33

72SR

[10]

73SR

[11]

74O

P[16

]

75AU

X[3]

76AU

X[2]

77AU

X[1]

78AU

X[0]

79VD

3318

80VS

S33/

VSS

81VD

3318

82VD

33

83VD

D

VD33

R527 3.9KOPT_DET

R514 100

R566 100

WL_INT_RR

WL_MSG_RDY_RR

R515

100

LCD_

RST

LCD_

CD

LCD_

CLK

LCD_

BL

R516 100 TUNER_P_CTRL

R574

100

R529

100

6. OPTICAL

FIG 6-1. OPT IN

13

FIG 6-2. OPT DET

14


15

TGND

R409 100

X40132.768KHZ

R4N8 100

TGND

IC402

1 NC2 FMI3 RFGND4 LPI5 RST

6

SEB

7

SCLK

8

SDIO

10

VD

11VA

12GND

13ROUT/[DOUT]

15DOUT

16

DFS

9

RCLK

14LOUT/[DFS]

17

GPO

3/[D

CLK]

18

GPO

2/[IN

T]

19

GPO

1

20

NC

C433 10nF

TGND

TUNER_3V3

C4A633pF

TUNER_DAT

TUNER_R

C43722pF

TUNER_CLK

FB401PZ1608U221-1R4TF

FB403TUNER

220ohm

DGND

R4C3 0

R407 10K

D401KDS226

1 C

2 AC

3A

TGND

TGND

TGND

C4A433pF

TGND

TUNER_RST

DGND

R408 100

C43810uFTGND

FB404TUNER

220ohm

C436100nF

TUNER_CER4N4 100 TGND

C434100nF

CN402

EAG64749901YAW025-02

1TGND2FM_ANT

DGND

C4322.7pF

L40756NH

C4A533pF

FB402PZ1608U221-1R4TF

FM_ANT

DGND

TGND

C446 1uF TUNER

C43522pF

R4N5 100

C440 1uF TUNER

L40656NH

TGND

C4311nF

TGND

R4051K

DGND

C43910uF

TUNER_L

FM

TP_GND

EAX68098001

Close to pin

FM TUNER

Close to pin

Close to pin

Reference PCB

7. FM

FIG 7. TUNER AUDIO

1.27 Vrms11111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111.2222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222227777777777777777777777777777777777777777777777777777777777777777 VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss

15


3-343-33

CIRCUIT VOLTAGE CHART

IC Sym Pin Spec Measured Voltage

IC300DC,DC

Vin: 1 SW: 2

Vin: 4.2 V ~ 17 V VOUT: 0.8 V ~ 10 V

Vin: 12.02 V VOUT: 5.20 V

IC301DC,DC

Vin: 4 SW: 3

Vin: 2.7 V ~ 5.5 V VOUT: 0.6 V ~ 5.225 V

Vin: 5.21 V VOUT: 3.44 V

IC302DC-DC

VIN: 2VOUT: 3

Vin: +4.0 V ~ +36 V Vout: 0.8 V ~ 33 V

Vcc: 25.42 V Vout: 12.02 V

IC303DC,DC

Vin: 4 SW: 3

Vin: 2.7 V ~ 5.5 V VOUT: 0.6 V ~ 5.225 V

Vin: 5.22 V VOUT: 1.41 V

IC306 Switch IC

Vin: 5 Vout: 1

Vin: 2.5 V ~ 5.5 V out: 0 V ~ 5.5 V

Vin: 3.38 V out: 3.36 V

IC309 Switch IC

Vin: 5 Vout: 1

Vin: 2.5 V ~ 5.5 V out: 0 V ~ 5.5 V

Vin: 3.38 V out: 3.36 V

IC310 Switch IC

Vin: 5 Vout: 1

Vin: 2.5 V ~ 5.5 V out: 0 V ~ 5.5 V

Vin: 3.34 V out: 3.33 V

IC311 LDO IC

Vin: 1Vout: 5 Vin: 2.3 V ~ 6 V Vin: 5.24 V

Out: 3.43 V

IC312 LDO IC

Vin: 1Vout: 5 Vin: 2.3 V ~ 6 V Vin: 5.22 V

Out: 3.4 V

IC313 Switch IC

Vin: 5 Vout: 1

Vin: 2.5 V ~ 5.5 V out: 0 V ~ 5.5 V

Vin: 3.34 V out: 3.33 V

IC500RESET

VCC: 3 VCC: 1.0 V ~ 7 V VCC: 3.35 V

IC501MAIN DSP

VDD : 20, 52, 83VDDAADC : 121

VD33 : 7,18,25,54,71,79,81,82VD33PLL : 41VD33USB : 37

VD33ADAC : 98, 116VD33AADC : 126

VDD : 1.3 V ± 5 % VDDAADC : 1.3 V ± 5 %

VD33 : 3.3 V ± 5 % VD33PLL : 3.3 V ± 5 % VD33USB : 3.3 V ± 5 %

VD33ADAC : 3.3 V ± 5 % VD33AADC : 3.3 V ± 5 %

VDD : 1.34 V VDDAADC : 1.35 V

VD33 : 3.33 V VD33PLL : 3.33 V VD33USB : 3.33 V

VD33ADAC : 3.31 V VD33AADC : 3.26 V

IC503SERIAL FLASH

MEMORYVCC: 8 VCC: 2.7 V ~ 3.6 V VCC: 3.30 V

IC504SERIAL FLASH


IC505SERIAL FLASH


IC703AMP

GVDD_AB: 1GVDD_CD: 22

PVDD_AB: 36,37,38PVDD_CD: 29,30,31

VDD: 2DVDD: 8AVDD: 13

GVDD_AB: -0.3 V ~ 13.2 V GVDD_CD: -0,3 V ~ 13.2 V

PVDD_AB: -0.3 V ~ 50 V PVDD_CD: -0.3 V ~ 50 V

VDD: -0.3 V ~ 13.2 V DVDD: -0.3 V ~ 4.2 V AVDD: -0.3 V ~ 8.5 V

GVDD_AB: 11.9 V GVDD_CD: 11.9 V PVDD_AB: 25.5 V PVDD_CD: 25.5 V

VDD: 11.9 V DVDD: 3.32 V AVDD: 7.76 V


MES

1

2

R4

05

R4

07

R 4 0 8

R 4 0 9

R3

A1

R3

A2

R3

A3

F R 2 +

R3

A4

R3

A5

F R 2 -

R3

A6

R 5 A 0R 5 A 1

C N 4 0 2

R 5 A 2

R 5 A 3R 5 A 4

R5

A5

R5

A6

R5

A7

R 7 A 1

F L 2 +

OP

5

F L 2 -O P 6

OP

7

R7

C2

R7

C3

X4

01

C 5 A 1

C 5 A 2

F 3 0 0

F 3 0 1

C4

31

C 4 3 2

C4

33

C4

34

C4

35

C4

36

C4

37

C 4 3 8 C 4 3 9

C 4 4 0

C4

46

C 7 C 5

C 7 C 6

Q 3 0 0 Q 3 0 1

Z D 5 0 4

L 3 0 0

L 3 0 1

Z D 5 1 1

L 3 0 2

Z D 5 1 2

L 3 0 8

F M

K E Y _ G

FL

50

0

L709

L710

R R 5 0 3

RR

50

5R

R5

06

RR

50

7R

R5

08

RR

50

9

RR

51

0R

R5

11

RR

51

2R

R5

13

RR

51

4R

R5

15

RR

51

6R

R5

17

FB

30

3

F B 3 0 4

FB

30

5

FB

30

6

JK

30

0

FB

31

0

F B 3 1 3R 3 0 3

F B 5 0 7

R C F 5 0 0

F B 3 1 4

F B 5 0 8

FB

50

9

F B 3 1 5

F B 3 1 6 JK

50

2

FB

31

7

FB

31

8R 3 0 8

R 3 1 0

R 5 0 5R 5 0 6

R 3 1 2

R 5 0 7

R 3 1 4

R5

08

R3

15

R5

09

R 3 1 9

RC

50

2R

C5

03

R 5 1 0

RC

50

4

RC

50

5

R5

12

RC

50

6

R5

14

RC

50

9

R 5 1 5

R5

16

R 5 1 8

R 5 1 9

R 3 2 7

RC

51

0

CN

50

0

RC

51

1R

C5

12

CN502

RC

51

3

CN503

RC

51

4

CN504

R 5 2 0

RC

51

5

C N 5 0 5

R 5 2 1

R C 5 1 6

CN506

R C 5 1 7

RC

51

8

RC

51

9

R 5 2 5

R 5 2 6

R 5 2 8

R 5 2 9

CN703

R3

38

CN704

R3

39

RC

52

2R

C5

23

C 3 0 0

R 5 3 0

C 3 0 1

R 5 3 1

R 5 3 2

R4

C3

R5

33

C 3 0 4

R5

34

C3

05

R 5 3 5

C 3 0 7

C3

08

C3

09

C5

02

C 5 0 3

C3

10

R 5 4 0

C3

11

R 5 4 1

C5

05

C 3 1 2

R 5 4 2

C 5 0 6

C 3 1 3

R 5 4 3

C3

14

C 5 0 8

R 5 4 4

C3

15

C 5 0 9

C3

16

C3

17

R 5 4 7

C3

18

R 5 4 8

C3

19

R5

49

X 5 0 0

C5

10

M C L K

C5

13

C4

A4

C 3 2 0

R5

50

C4

A5

C 5 1 5

C3

21

R5

51

C4

A6

C3

22

R 5 5 2

C 3 2 3

C 5 1 7

R 5 5 3

C 3 2 4

C 5 1 8

R 5 5 4

C 5 1 9

R5

55

C3

26

R5

56

C 3 2 7

R5

57

C3

29

R3

65

R 5 5 9

R3

66

R3

68

R5

60

C 3 3 0

C 3 3 1

WF

B5

01

R 5 6 1

R5

62

C 3 3 3

R5

63

R3

70

C 3 3 4

R5

64

R 3 7 1

R5

65

C3

35

R5

66

C3

37

R5

68

R3

75

C3

39

R5

69

R 5 7 4

R3

80

R3

81

R 5 7 5R 5 7 6

C3

47

O C P

C 3 4 8

R 5 7 8

T P _ G N D

R 5 7 9

R3

88

R 5 8 0

C 5 4 4

R 5 8 1

C 5 4 5

R 5 8 2

C 5 4 6

R 5 8 3C 5 4 7

C3

54

R 5 8 4

C 5 4 8

C 5 4 9

C3

55

R 5 8 5

C3

56

R 5 8 6

W R 5 0 3

WR

50

5W

R5

06

R 3 9 6

WR

50

7W

R5

08

C 7 4 4

WR

50

9

C 7 4 5

C 5 5 2

C 7 4 6

C 5 5 3

C7

47

D 3 0 0

D3

01

C 5 5 5

C5

56

C5

57

WR

51

0

R5

94

C3

64

WR

51

1

R5

95

C3

65

WR

51

2

R5

96

WR

51

3

C3

67

R5

97

WR

51

4

C3

68

R 5 9 8

WR

51

5

R 5 9 9

WR

51

6W

R5

17

D 5 0 2

D 5 0 3

C3

70

C 5 6 4

C 7 5 8

C3

71

C 7 5 9

R7

95

R7

96

R7

97

R7

98

C 5 6 9

C 3 7 8

C 3 7 9

D7

02

D7

03

C 5 7 0

L4

06

L 4 0 7

C7

67

IC3

00

C7

68

C 3 8 1

I C 3 0 1

C 3 8 2

IC3

02

C 3 8 3

I C 3 0 3

C 5 7 7

IC3

06

C 3 8 7

C 3 8 8

I C 3 0 9

C7

71

C7

72

C7

73

C7

74

I C 5 0 1

C 7 7 7

C3

90

IC3

10

C 7 7 8

IC3

11

C 3 9 1

C 7 7 9

WC

50

2

I C 3 1 2

C 3 9 2

C 3 9 3

I C 3 1 3

WC

50

3

C 3 9 4

WC

50

4

C 5 8 8

C 3 9 5

WC

50

5W

C5

06

C3

96C

39

8

C7

80

WC

50

9

C7

83

C7

84

C7

85

C7

86

WC

51

0W

C5

11

WC

51

2W

C5

13

WC

51

4W

C5

15

W C 5 1 6

W C 5 1 7

WC

51

8

K E Y _ T P

WC

51

9R

FB

50

1

WC

52

0

WC

52

2W

C5

23

R4

N4

FB

40

1

R4

N5

FB

40

2

F B 4 0 3

F B 4 0 4

R4

N8

R

L

SL4 / SL4Y / SL4F MainEAX68408202 Ver1.1FR4-4L 1.2T 2018.12.06 261X67.5

R 5 F 2

R 5 F 1

C 5 F 2

C 5 F 1

F B 5 1 0

I C 4 0 2

Rear SPKSubwoofer

JK501

1

8

23

4

76

5

H:2

.55

mm

KE

Y_

GN

D

RD

AT

A2R

MU

TE

DG

ND

WR

DY

U S B _ N

U S B _ P

CN402

LC

D_

ST

B

RR

DY

R7

A2

R7

A3

T G N D

R 7 B 0

R7

B1

R 7 B 4

BT

_R

ST

R7

B9

WL

RC

K

R7

C0

T P 3 0 0

T P 3 0 1

LE

D+

LE

D-

C7

A2

C7

A3

BT

_C

LK

WR

ES

ET

RC

S

WD

A2

_W

F

BT

_G

ND

RD

I

Z D 5 0 1

RD

O

BT

_R

X

Z D 7 0 1

ZD

70

2Z

D7

03

C 5 F 3

LC

D_

CD

F R +

RIN

IT

Q 7 0 8

Q 7 0 9

F R -

F M _ A N T

BT

_T

X

BT

_D

AT

WM

UT

E

L7

09

L7

10

R R 5 0 1

R R 5 0 2

RR

50

4

WN

C1

00

WN

C1

01

WN

C1

02

WN

C1

05

WN

C1

06

WN

C1

07

JK

30

0

F B 5 0 1

FB

50

2

FB

50

3

WW

P

RR

ES

ET

F B 5 0 4

R3

00

FB

31

1

F B 5 0 5

R 3 0 1

R 3 0 2

WS

CL

R 3 0 4

3.3

VA

R3

05

R 3 0 6

JK502

R3

07

WS

DA

R 3 0 9

R 3 1 1

R 3 1 3

R 3 1 6

R 3 1 7

RS

CL

R3

18

R C 5 0 1R 7 0 2

R7

03

RS

DA

R 5 1 1

F L +R 3 2 1

F L -

R3

22

R3

23

LC

D_

RS

T

LC

D_

DA

T

R3

28

R7

15

R5

22

R7

16

R5

23

R 5 2 4

WC

LK

R 5 2 7

R3

35

C3

02

C 3 0 3

R3

40

C 3 0 6

R5

36

R5

37

R5

38

R 5 3 9

R3

46

RC

LK

BT

_V

CC

C5

00

C 5 0 1

LC

D_

CL

K

R E M O _ T P

R 3 5 1

R5

45

R5

46

R 3 5 5

R3

56

R3

57

TP

1

C5

11

C7

06

W3

V3

C7

07

C 5 1 4

C7

08

C3

25

C3

28

WG

ND

R 5 5 8

R3

67

C5

20

C 5 2 1

C 5 2 2

C 5 2 3

VL

CD

C5

24

C5

25

C 3 3 2

C 5 2 6

R3

V3

C5

27

C5

28

C 5 2 9

R3

72

U S B 5 V

R3

73

R 5 6 7

WIN

IT

R3

74

RG

ND

C5

30

C5

31

C5

32

C5

33

R5

70

C5

34

C5

35

R5

71

C5

36

R5

72

C 5 3 7

R5

73

C 5 3 8

C5

39

C 7 3 0

C 7 3 1

R3

87

C 5 4 0C 5 4 1

C 5 4 2

C7

36

C 5 4 3

C7

37

R7

74

C 7 3 8

C 3 5 1R 7 7 5

C 7 3 9

RL

RC

K

R 7 7 7

W R 5 0 1

R3

91

W R 5 0 2

R3

92

WR

50

4

R 5 8 8

KE

Y

C7

41

WD

AT

A2

WB

CK

C 5 5 0

G S 3 0 1

C 5 5 1

R 7 8 2R 7 8 3R 7 8 4

R 7 8 5

C7

53

C 5 6 0

C7

54

C 5 6 1

C7

55

C7

56

RB

CK

C5

65

C 5 6 7

WC

S

C5

73 W

DI

WD

O

IC5

00

IC5

03

IC5

04

W C 5 0 1I C 5 0 5

I C 5 0 6

C 3 9 7

U S B _ G N D

IC7

03

VB

0+

RW

P

VB

0-

VB

1+

VB

1-

GN

D

C 5 F 6

C 5 F 4

C5

F5

R5

F8

R 5 F 7R 5 F 6

R 5 F 5R 5 F 4 R 5 F 3

Q 5 0 2

C 3 3 6C 3 3 8

D 4 0 1

JK

50

1

3-363-35

PRINTED CIRCUIT BOARD DIAGRAMS 1. MAIN P. C. BOARD DIAGRAM (TOP VIEW)

(BOTTOM VIEW)


3-383-37

NC

VOL+

VOL-

POWER

FUCN

EAX68503501 VER1.3 SL4/SL5 KEY BOARDFR4-2L 1.2T 2018.12.07 PCB SIZE:40.6X30

TP

A0

0

TP

A0

1

S W A 0 0

SW

A0

1S

WA

02

SW

A0

3S

WA

04

RA

00

RA

01

RA

02

RA

03

RA

04

RA

05

RA

06

CA

00

C N A 0 0

2. KEY P. C. BOARD DIAGRAM (TOP VIEW) (BOTTOM VIEW)


3-403-39


SECTION 4

WIRELESS SUBWOOFER PART

CONTENTS

ONE POINT REPAIR GUIDE ............................................................................................................................ 4-21. NO POWER PROBLEM (PVDD) ............................................................................................................ 4-22. POWER ON ERROR .............................................................................................................................. 4-33. POWER ON ERROR .............................................................................................................................. 4-44. WIRELESS CONNECTION .................................................................................................................... 4-5

WAVEFORMS OF MAJOR CHECK POINT ...................................................................................................... 4-61. VOLTAGE ............................................................................................................................................... 4-62. AMP VOLTAGE ...................................................................................................................................... 4-73. PWM ....................................................................................................................................................... 4-84. LED ......................................................................................................................................................... 4-9

WIRING DIAGRAM .......................................................................................................................................... 4-11

BLOCK DIAGRAM .......................................................................................................................................... 4-13

PRINTED CIRCUIT BOARD DIAGRAMS ....................................................................................................... 4-151. WOOFER SMPS P. C. BOARD ............................................................................................................ 4-152. WOOFER AMP P. C. BOARD .............................................................................................................. 4-173. WOOFER KEY P. C. BOARD ............................................................................................................... 4-17



1. NO POWER PROBLEM (PVDD)No power problem occurs when you power on the unit

1-1. SolutionIf you check these points and find PVDD voltage is not checked, replace woofer SMPS board.

1-2. Service hint (Any picture / Remark)

< Woofer AMP board bottom view >

< Woofer AMP board top view >

PVDDPVDDpin3, 4, 5, 6 at WCN601pin3, 4, 5, 6 at WCN601

PVDDPVDDpin7 at WIC606pin7 at WIC606Nearby WC610Nearby WC610

PVDDPVDDpin7 at WIC607pin7 at WIC607Nearby WC686Nearby WC686

PVDD PVDD at WCA601at WCA601



2. POWER ON ERRORFundamental power check points

2-1. 12 V1) Check 12 V at WL604 nearby WL603 coil.2) If 12 V is not checked at the point, then find PVDD at pin7 of WIC606.3) 1), 2) is NG Replace WIC606.

If you can’t check PVDD voltage, then you replace woofer SMPS board.

2-2. 3.7 VA1) Check 3.7 VA at WL606 coil.2) If 3.7 VA is not checked at the point, then find PVDD at pin7 of WIC607.3) 1), 2) is NG Replace WIC607.

If you can’t check PVDD voltage, then you replace woofer SMPS board.



12 V 12 V at WL604at WL604

PVDDPVDDat pin7 of WIC606at pin7 of WIC606

3.7 VA 3.7 VA at WL606at WL606

PVDDPVDDat pin7 of WIC607at pin7 of WIC607



3. POWER ON ERRORMAIN SoC IC supply voltage check points

3-1. 3.3 VA1) Check 3.3 VA at WCA603 and WL627.2) Check 3.3V_PWM at pin5 of WIC605.3) Check 3.3 VA at pin7, 8 of WIC603.4) Check 3.3V_PWM at WL615 nearby WIC601.

If all voltages are OK, then check the PVDD voltage of woofer SMPS board.


3.3V_PWM3.3V_PWMat WL615at WL615

3.3 VA 3.3 VA at WCA603, WL627at WCA603, WL627

3.3 VA 3.3 VA at pin7, 8 of WIC603at pin7, 8 of WIC603

3.3V_PWM3.3V_PWMat pin5 of WIC605at pin5 of WIC605



4. WIRELESS CONNECTIONWireless connection malfunction

4-1. 3.3 VA1) Check 3.3 VA at WL616.

4-2. Connection1) Wireless module connection closely.2) Implement Wireless Factory Reset. MAIN SET : Soundbar vol MIN and push Mute key (sustain 3 ~ 5 sec). Subwofer : Push Pairing key on the back case of the wireless subwoofer. The LED of of the wireless subwoofer blink red and green, pull out power cord. The main set and the wireless subwoofer are factory reset mode, then power on.

< Woofer KEY board top view >


3.3 VA3.3 VAat WL616at WL616

Wireless moduleWireless moduleConnection checkConnection check

Pairing keyPairing key


WAVEFORMS OF MAJOR CHECK POINT

1. VOLTAGE

FIG 1-1. WIC607 3.7 VA

1

FIG 1-2. PWM 3.3 V

2

FIG 1-3. Wireless 3.3 VA

3

3

2

1


2. AMP VOLTAGE

FIG 2-1. Woofer PVDD

PVDD: 34.5 V

4

FIG 2-2. Woofer 12 V

5

4

4

5


3. PWM

FIG 3-1. Woofer PWMSW+ SIgnal

6

FIG 3-2. Woofer PWMSW- SIgnal

7

76


4. LED

FIG 4-1. Pairing Off Status Red LED

8

FIG 4-2. Pairing On Status Yellow LED

9

98


DIP 2pin SWF

Harness Cable 12Pin

FFC SMD 24 Pin straight Dip 2Pin

(Power Cord)

SMPS PCB AMP PCB

Harness 12Pin Connector

Pairing Key 2Pin Harness

Cable 2Pin

Pairing Key PCB

LED CNT

Wirelessmodule

4-124-11

WIRING DIAGRAM


WOOFERAMP

PVDD

WOOFERAMP

SW+LPF

DC-DC

DC-DC

LDOPVDD

PVDD

PWM 3.3

Wireless 3.3

3.7 V

LDO

PWM

PWM_SW+PWM_SW-

12 V

SW-LPF

Flash

4-144-13

BLOCK DIAGRAM


4-164-15

PRINTED CIRCUIT BOARD DIAGRAMS 1. WOOFER SMPS P. C. BOARD (TOP VIEW) (BOTTOM VIEW)

NOTE) Warning Parts that are critical with respect to risk of fire or electrical shock.


4-184-17

2. WOOFER AMP P. C. BOARD

3. WOOFER KEY P. C. BOARD

(TOP VIEW)

(TOP VIEW)

(BOTTOM VIEW)

(BOTTOM VIEW)

SERVICE MANUAL - Wireless Sound Bar - Encompass Parts

Documents

Transcript of SERVICE MANUAL - Wireless Sound Bar - Encompass Parts