Sony KDL-55W6XD Schematic

HISTORY INFORMATION FOR THE FOLLOWING MANUAL:

SERVICE MANUAL (COMMON)

Version Date Subject

1 01/2016 1st Issue.

GN2S CHASSIS

Segment: QW

LCD TV

9-888-190-01

For SM - Unique , please refer :

9-888-190-Ax ( America )

9-888-190-Cx ( China)

9-888-190-Ex ( Europe )

9-888-190-Px ( Pan Asia)

SERVICE MANUAL (COMMON)

GN2S CHASSIS

Segment: QW

LCD TV

MODEL LIST

THIS SERVICE MANUAL CONTAINS COMMON INFORMATION FOR BELOW REGIONS AND MODELS:

REGION
ASIA AMERICA EUROPE

CHINA

MODEL

KLV-32W6*D KLV-40W6*D KLV-48W6*D
KDL-32W6*D KDL-40W6*D KDL-48W6*D KDL-55W6*D

Section Title

1. SAFETY NOTES

1

1

1

1

1

1

1

1

)…………………………………….

2. SELF DIAGNOSTIC FUNCTION

2

Overview of Control Buttons .................................................................. .

2

……….....................................................................

2

………………........................................................................

2

2

............................................................................................

3. TROUBLE SHOOTING

3

.............................................................................................

3

3

No Picture................................................................ ............ ............ ........ .

3

TABLE OF CONTENTS

Section Title

4. SERVICE ADJUSTMENTS

4

Accessing Service Mode .....................................................................

4

Accessing Software Version....................……….………………………

4

Accessing Self Diagnostic History………………………………..……..

4

Accessing Self Diagnostic Menu………………………………………...

4

Accessing Serial Number Edit……………….…………………………..

4

Accessing Model Number Setting........................................................

4

White Balance..................................................... ............... ............ ......

4

Aging Mode...................................................... .................. ................ ..

4

Tuner Detection........................................................ ............... .............

5. DIAGRAMS
5

Circuit Board Location .........................................................................

5

Block Diagram......................................................................................

5

Connector Diagram

Page

-1. Warnings and Caution………………………………………………………. 5

-2. Caution Handling of LCD Panel ......…………….................................... 5

-3. Caution About the Lithium Battery……………......................................... 6

-4. Safety Check Out ........................……………......................................... 6

-5. Leakage Test .......................................................................................... 6

-6. How to Find a Good Earth Ground………………………………………… 6

-7. Lead Free Information….…………………………………………………… 7

-8. Handling the Flexible Flat Cable (FFC

-1.

-2. LED Display Control

-3. LED Pattern

-4. Standby LED Error Display…………………………………………………. 8

-5. Triage Chart

-1. LED Blinking

-2. No Power…….……………………………………………………………….. 28

-3.

-4. No Sound.............................………………………………………….......... 107

7

8
8
8

9

12

54

Page

-1.

-2.

-3.

-4.

-5.

-6.

-7.

-8.

-9.

-1.

-2.

-3.

Please refer to Service Procedure for Panel , Board and Software Change / Upgrade
Manual , part number 9-888-196-0x in TISS .

Please refer Service Manual – Unique for below information :

………………………………………...................... 147

129
129
130
130
132
133
135
139
140

143
144

-Safety Warnings

-Wire Dressing

-Circuit Board Location

-Disassembly and Exploded View.

Note: Pictures provided in this Ser vice Manual might have slight difference from the
actual sets.

4

SECTION 1

4

3) Do not leave the module in high temperature or in areas of high humidity for

6) Di

klight (CCFL)

Correct

hand

placement

while

carrying

theTVis

very

important

for

8) Use care when handling the wires or connectors of the inverter circuit.

components

with

Sony

parts

whose

part

numbers

appear

as

shown

in

this

p

th

hile the TV is f

p

p

SAFETY NOTES

1-1. Warnings and Caution

1) These servicing instructions are for use by qualified service personnel only.

2) To reduce the risk of electric shock, do not perform any servicing other than
that contained in the operating instructions unless you are qualified to do so.

3) An isolation transformer should be used during any service to avoid
Possible shock hazard, because of live chassis. The chassis of this receiver is
directly connected to the ac power line.

4)Be sure tofollow these guidelines to protect yourproperty and
avoid causing serious injury :

• Carry the TV with an adequate number of people; larger size TVs require
two or more people.

•

safety and to avoid damages.

5) Components identified by shading and mark on the exploded views,

and in the parts list are critical for safe operation. Replace these

manual or in supplements published by Sony. Circuit adjustments that are
critical for safe operation are identified in this manual. Follow these
procedures whenever critical components are replaced or improper

eration is suspected.

o

!

1-2. Caution Handling of LCD Panel

When repairing the LCD Panel, make sure you are grounded with a wrist band.
When repairing the LCD Panel on the wall, the panel must be secured using the

mounting holes on the rear cover.

1) Do not press the panel or frame edge to avoid the risk of electric shock.

2) Do not scratch or press on the panel with any sharp objects.

an extended period of time.

4) Do not expose the LCD panel to direct sunlight.

5) Avoid contact with water. It may cause short circuit within the module.
sconnect the AC power when replacing the bac

inverter circuit. (High voltage occurs at the inverter circuit at 650Vrms)

7) Always clean the LCD panel with a soft cloth material.

Damaging the wires may cause a short circuit.

9) Protect the panel from ESD to avoid damaging the electronic circuit (C-MOS).

10) During the repair, DO NOT leave the Power On or Burn-in period for more

an 1 hour w

ace down on a cloth.

or

Figure 1. TV is faced down on a cloth during repair.

5

1-3. Caution About the Lithium Battery

1) Danger of explosion if battery is incorrectly replaced. Replace only with
the same or equivalent type.

2) Outer case broken battery should not contact to water.

1-4. Safety Check-Out

After correcting the original service problem, perform the following
safety checks before releasing the set to the customer:-

1) Check the area of your repair for unsoldered or poorly soldered
connections. Check the entire board surface for solder splashes and bridges.

2) Check the inter board wiring to ensure that no wires are pinched or
contact high-wattage resistors.

3)Check all control knobs, shields, covers, ground straps and mounting
hardware have been replaced. Be absolutely certain you have replaced all
the insulators.

4) Look for unauthorized replacement parts, particularly transistors that
were installed during a previous repair. Point them out to the customer and
recommend their replacement.

5) Look for parts which, though functioning show obvious signs of
deterioration. Point them out to the customer and recommend their
replacement.

6) Check the line cords for cracks and abrasion. Recommend the
replacement of any such line cord to the customer.

7) Check the antenna terminals, metal trim, metalized knobs, screws and all
other exposed metal parts for AC leakage. Check leakage test as described
next.

8. For safety reasons, repairing the Power board and/or Inverter board is
prohibited.

1-5.Leakage Test

The AC leakage from any exposed metal part to earth ground and from all
exposed metal parts to any exposed metal part having a return to chassis must
not exceed 0.5mA (500 microamperes).
Leakage current can be measured by any one of the three methods:-

1) A commercial leakage tester such as the SIMPSON 229 or RCA WT540A.
Follow the manufacturers instructions to use those instructions.

2) A battery-operated AC milliampmeter The DATA PRECISION 245 digital
multimeter is suitable for this job.

3) Measuring the voltage drop across a resistor by means of a VOM or battery
operated AC voltmeter. The 'limit' indication is 0.75V so analog meters must
have an accurate low voltage scale. The SIMPSON'S 250 and SANWA SH­63TRD are examples of passive VOMs that are suitable. Nearly all battery
operated digital multimeter that have a 2 VAC range are suitable.
(see Figure 2.)

Figure 2. AC voltmeter to check AC leakage

1-6. How to Find a Good Earth Ground

1) A cold-water pipe is a guaranteed earth ground; the cover-plate retaining
screw on most AC outlet boxes is also at earth ground.

2) If the retaining screw is to be used as your earth ground, verify that it is at
ground by measuring the resistance between it and a cold-water pipe with an
ohmmeter. The reading should be zero ohms.

3) If a cold-water pipe is not accessible, connect a 60- to 100-watt trouble­light (not a neon lamp) between the hot side of the receptacle and the
retaining screw. Try both slots, if necessary, to locate the hot side on the line;
the lamp should light at normal brilliance if the screw is at ground potential
(see Figure 3).

Figure 3. Checking for earth
ground.

6

1-7. Lead Free Information

The circuit boards used in these models have been processed using Lead
Free Solder. The boards are identified by the LF logo located close to the
board designation.

The servicing of these boards requires special precautions. It is strongly

Figure 4: LF Logo

Figure 5: LF logo on circuit board

recommended to use Lead Free Solder material in order to guarantee optimal
quality of new solder joints.

1-8. Handling the FLEXIBLE FLAT CABLE (FFC)

 When you insert / pull out FFC, please grasp a reinforcement board and main

body of FFC.

7

1-8. Handling the FLEXIBLE FLAT CABLE (FFC)

<INSERTION>

Insert properly without slanting

<PULL OUT>

Press release button at the same
time pull out FFC cable

8

1-9. Assemble and Dissemble Tuner Module

Tuner Module treatmen t way

1. The insertion & extraction angle of the module is permitted to
specified degree for connector

Push down to screw.

For removing Tuner Module,
After un screwed, Automatically the Module
will float to correct degree.
So please extract it with keeping this degree.

20°

Reference paper for 20 degree
(If need please use for fit by cutting this paper)

20°

9

SECTION 2

SELF DIAGNOSTIC FUNCTION

2-1. Overview of Control Buttons

LED Indicator

• Lights up in green when you select “Picture Off”.

• Lights up in amber when you set the timer or
“Photo Frame Mode”.

• Lights up in green when the TV is turned on.

• Flashes while the remote is being operated.

2-2. LED Display Control

Status LED Colour Remarks
Power Off ( AC Off and *1) OFF *1 power switch off (by touch button)
Power On Green
Standby(by remote control off

and Side Key off)

OFF

Amber = Red + Green

2-3. LED Pattern

When safety shutdown occurs, Standby LED displ ay reports the cause by using the lightning

0.5sec

.

3.0sec 3.0sec

patterns as indicated below

0.5sec

Example: The figure above shows LED display when SHUTDOWN is caused by Audio
Error. It repeats flashing for a specifi ed num ber of tim es i n 0.5sec/c ycle and has a 3 seconds interval of li ghting
off. Please note that a 3 seconds interval of lighting off is fixed regardless of abnormal state types.

2-4. Standby LED Error Display

The Number of Standby LED
(RED blinking)

2 Main Power Error AC adapter Error
3 Audio Error B* board Error
4 Panel Power Error B* board Error
5 Panel I2C COMM Error B* or Source board Error
6 Backlight Error B* board Error

Error Detection Error Location

Picture Off Green
Set "Sleep Timer" Amber
Set "On Timer” ( Power On ) Amber
Set "On Timer”( Standby ) Amber
Picture Frame Amber

Failure Red Blinking

Error of panel ID

Software Updating

6

Amber/Green

Blinking

Amber

Blinking

The number of LED blinking indicates
cause of failure.

Blinking:0.5sec Amber/ 0.5sec Green

Blinking: 1sec On / 1sec Off

B* Board Type

Size

PAN ASIA,AMERICA,

CHINA
32” BBA BBE
40” BBA BBE
48” BBA BBE

EUROPE

10

2-5. Triage Chart

(missing/
distorted)

Stationary

dots

Cannot

(Tact-Key OK)



    







    































   







Segment

Reference

QT QW QW-L SE3N SE3 2 3 4 5 6

Symptoms - Shutdown. Power LED

blinking red diagnostics sequences

B* Board Y Y Y Y Y

AC Adaptor Y Y Y Y Y

H* Board Y Y Y Y Y

Stereo

Speaker

Assist

Speaker

Wi-Fi

module

Y Y Y Y Y

Y Y

Y Y Y

LVDS FFC Y Y Y Y Y

LED Panel Y Y Y Y

Tuner

module

Y Y Y Y Y

Switch Unit Y Y Y Y Y

Problem

Power Audio

No Power

(No Pic, No

Sound, No BL)

No Power LED

&

No Reponse to

remote

(Dead Set)

colored
lines or

Video

(missing/distorted)

No Video
in 1(one)
of Inputs

No

Video

in

All

Inputs

RF

Tune

Remote

No Reponse

when press
remote key

Panel

(Power)

Panel

(Communication)

Panel

(Backlight)

Network
*QT,QW,

SE3N

Wireless

can't

connect

Audio

No Audio

front LED Tact-Key

No

No LED

(Set is still

alive)

Response

when

press
Tact-Key
(Remote

OK)

Most likely defective part
Secondary possible defective part

B* Board Type

Size

PAN ASIA,AMERICA,

CHINA

EUROPE

32” BBA BBE
40” BBA BBE
48” BBA BBE

11

3-1. LED BLINKING

3-1-1. 2x Blinking (Main power Error)

BBE, BBA board (QW, QWL) only

SECTION 3

TROUBLESHOOTING

B* Board Type

Size

PAN ASIA,AMERICA,

CHINA
32” BBA BBE
40” BBA BBE
48” BBA BBE

-ve

EUROPE

2 times
Blinking

B-Board

Check DC voltage at

JL6001

18V – 22.5V?

*Typical: 19.5V

Yes

Change B-board Change B-board

No

and check the output voltage.

Adaptor

Take out adaptor

18V – 22.5V?

(Refer Figure 1)

*Typical: 19.5V

Yes

No

+ve

Change
adaptor

Ensure that
+ve probe is
touching the

needle.

Figure 1: How to check adaptor’s output
voltage.

12

2 x Blinking (Checking Point)

Board Name Board PWB (A side) Detail

BBA
(Q6020)

Q6020

BBE
(Q6020)

Q6020

13

3-1. LED BLINKING
3-1-2. 3x Blinking (Audio Error)

START

3x blinking

 TV must be power OFF condition

before unplug any of the
FFC/FPC/wire/cable from the board.

-> This is to prevent possibility
circuit damage happen.

No connectivity of F4000

F4000 broken,

Replace F4000

3x blinking

Remove

Speaker Connector

at CN4001 & perform

AC OFF - ON

3x blinking

Check connectivity

of F4000

3x blinking &
F4000 OK

Audio IC problem,

IC4001 damage

No 3x blinking

3x blinking

Check Speaker harness
And Speaker impedance

No connectivity for
speaker harness

Change Speaker

Harness

Connect back

Speaker Connector

to CN4001

& perform AC OFF - ON

Speaker Impedance
≠ 6~8 Ω

Change Speaker

No 3x blinking

Change BB* board

No 3x blinking

DONE

14

3x Blinking (Checking Point)- BBA

Board

Name

BBA
(QW, QT)

IC4001
F4000
CN4001

Board PWB (A side) Details

IC4001

F4000

Details

CN4001

15

3x Blinking (Checking Point)- BBE

Board Name Board PWB (A side) Details

BBE
(QW, QWL,
QT)

IC4001
F4000
CN4001

Details

IC4001

F4000

CN4001

16

3-1. LED BLINKING

3-1-3. 4 x Blinking (Panel Power Error)- BBA

3-1-4. 4 x Blinking (Panel Power Error)- BBE

Start

Check voltage at

JL6030(BBA)

11.52V-12.82V?

Yes

End

No

IC6019 Checking

Procedure

Start

Check voltage at

JL6034(BBE)

11.52V-12.82V?

Yes

End

MTK Problem

or TV in stand-

No

Check PANEL_PWR

3.00V-3.33V?

by mode.

No

Yes

Check JL6034 (BBE)

11.52V-12.82V?

Replace

Q6023

Yes

No

Refer IC6019

Checking

Procedure

17

4 x Blinking (Checking Point) QW/QT-BBE [1/2]

POWER1

F6003

EN_V

Q6023

3.3V_STBY

1.5V

PANEL_PWR

1.2V

19.5V

Q6020

19.5V_ADP

19.5V & Q6020

F6002

STBY_5V

18

4 x Blinking (Checking Point) QW/QT –BBA [2/2]

1.5V

PANEL_PWR

EN_V

POWER1

3.3V_STBY

STBY_5V

F6003

1.2V

19.5V & Q6020

19.5V

Q6020

19.5V_ADP

F6002

F6002

19

3-1. LED BLINKING

3-1-5. 5 x Blinking (Panel I2C Error - General Checking)

START

Reinsert LVDS Flat

Flexible Cable (FFC) at B-Board

and Panel Side. Make sure FFC is

taped properly.

5 Times Blinking happen?

YES

Replace LVDS Flat Flexible

Cable (FFC)

5 Times Blinking happen?

YES

Check voltage PANEL_SDA &

PANEL_SCL.

Is 3V available?

No

No

TV set is OK now

NG Symptom:

Incorrect FFC Insertion

TV set is OK now

NG Symptom:

LVDS Cable NG

Is 3V -3.33V available?

YES

Replace

O-Cell* or Panel Module*

5 Times Blinking happen?

YES

Replace B-Board

TV Boots Up Normally

END

NO

No

Refer to Panel I2C

Manual Checking

TV set is OK now

NG Symptom:

B-Board Issue NG

* O-Cell or Panel
Module
replacement
depends on
service
capabilities

20

3-1. LED BLINKING

3-1-6. 5x Blinking (Panel I2C Checking Manual)

START

Check Impedance at PANEL_SDA &

PANEL_SCL.

Is High Impedance?

Yes

Check voltage 3.3V at

Q8601 (Source).

3V available?

Is 3V-3.33V available?

YES

Replace Q8601

5 Times

Blinking happen?

Yes

No

No

NO

Suspect IC5000/IC5001/IC9000 NG

IC9000 – Refer to 6X Blinking

IC5001 – Refer to No Picture

Troubleshooting

IC5000 – Replace Board

DDCON checking procedure
(IC6009)

Check CN8600 (32”F/40”/43”/ 48”/49”)

or CN8601 (32”W) condition.

NO

Is Connector OK?

YES

END

Replace CN8600/CN8601

NG Symptom:

CN8600/CN8601 Mount

or Part Issue

Replace Q8600?

5 Times

Blinking happen?

Yes

No

21

5 x Blinking (checking Point [1/2])

BBA
FHD

PANEL_SD
A (Top)

PANEL_SC
L (Bottom)

BBA
WXGA

Q860
1

Q8601
(Source

)
Q860
0

PANEL_SDA
(Top)

PANEL_SCL
(Bottom)

22

5 x Blinking (Panel I2C Checking Manual [2/2])

BBE
FHD

PANEL_SDA
(Top)

PANEL_SCL
(Bottom)

BBE
WXGA

PANEL_SDA
(Top)

PANEL_SCL
(Bottom)

Q8601

Q8600

Q8601
(Source)

23

3-1. LED BLINKING

3-1-7. 6x Blinking (Backlight Error)- QW

6x Blinking

Check if LED harness (CN9000)

is connected properly?

Yes

Check F9000 Fuse.

Impedance fuse > 1Ω?

No

Change B Board.

AC ON 6x Blinking?

Yes

Able to repair
Panel Module?

Yes

Change Harness.

AC ON 6x Blinking?

Yes

Replace LS bar*

No

Yes

Yes

Yes

No

No

No

Connect LED harness

AC ON 6x Blinking?

Change F9000 Fuse.

AC ON 6x Blinking?

B Board broken**

Change Panel Module

Harness broken

No

No

LED harness loose

Fuse F9000 broken

*To avoid changing all LS bar, please follow steps below

(1) Turn off AC
(2) Unplug DC adaptor from DC jack
(3) Plug in DC adaptor to DC jack
(4) Turn on AC
(5) LS bar will turn on for ~4s before 6x blinking
(6) Observe which LS bar cannot turn on during power on
(7) Replace LS bar that failed to turn on

**For 6x blinking B Board Troubleshooting please refer
next page.

24

3-1. LED BLINKING

3-1-8. 6x Blinking (Backlight Error - B Board Troubleshooting)-QW

B-Board Broken

Check D9001 (AC OFF)

VF > 0.1V and < 0.8V?

Yes

Check LED_VCC (AC OFF)

LED_VCC short to ground?

Impedance > 1kΩ?

Yes

Check D9002 (AC OFF)

VF > 0.5V and < 1V?

Yes

Check L9001 (AC OFF)

L9001 impedance < 1Ω?

Yes

Check Q9000 (AC OFF)

Impedance RDS > 100 ohm

Yes

No

Yes

No

Yes

No

Yes

No

Yes

No

Yes

Change D9001.

AC ON 6x Blinking?

Change C9026 & C9027

AC ON 6x Blinking?

Change D9002, Q9001, and RB9001

AC ON 6x Blinking?

Change L9001

AC ON 6x Blinking?

Change Q9000

AC ON 6x Blinking?

No

No

D9001 broken

C9026 & C9027 broken

No

D9002, Q9001, and RB9001 broken

No

No

L9001 broken

Q9000 broken

Suspect : Other Part damage

Change the board

25

6x Blinking (Checking Point) QW-BBA [1/2]

F9000, L9001, D9001, Q9000

L9001

F9000

S

Q9000

D9001

D

RB9001, Q9001, D9002, R9021

RB9001

Q9001

D9002

R9021

C9026, C9027, CN9000, IC9000, LED_VCC

C9026

IC9000

C9027

LED_VCC

CN9000

Q9000 RDS Measurement

Multimeter

-ve

+ve

26

6x Blinking (Checking Point) QW-BBE [2/2]

F9000, L9001, D9001, Q9000

L9001

F9000

S

Q9000

D9001

D

RB9001, Q9001, D9002, R9021

RB9001

Q9001

D9002

R9021

C9026, C9027, CN9000, IC9000, LED_VCC

C9026

IC9000

C9027

LED_VCC

CN9000

Q9000 RDS Measurement

Multimeter

-ve

+ve

27

3-2. NO POWER

3-2-1.H-board troubleshooting flow (for QW, QWL)

TV cannot be controlled

by remote commander

Yes

Check Green LED

at Power LED indicator.

Is it lighted up?

No

Check voltage at

Pin1 of H board connector

(refer next page)

Is it 5V?

No

Check H board to B board

harness condition.

Is it connected properly?

Yes

Check voltage at resistor of

5V source of B board.

Is it 5V?

Yes

No

Yes

No

Place remote commander (RC)

near to window and press RC key.

Is the LED blinking?

No

Connect harness properly

STBY5V NG. Refer toIC6014

troubleshooting section

Yes

Change Mechanical part

(ex. Ornamental panel,

or guide light)

Check SIRCS voltage

using multimeter

at R5038 on B board.

Then press and hold RC key and

observe voltage drop.

Does it drop

from 3.9V to (<2.9V)?

Yes

Main IC SIRCS line broken.

Change B-board

No

IR sensor broken.

Change H board.

Condition: TV is plugged to AC power supply,
and AC power supply is turned ON.

28

H-board troubleshooting flow (Checking Point)

Board name Board picture

HCY

Pin 1 of
H board connector

B board

R5038

BBA

BBE

R5038

29

3-2. NO POWER

3-2-2 : Switch unit troubleshooting flow (for QW, QWL)

Switch Unit NOT FUNCTIONING

Check if Wire Harness

And Connector is

connected properly?

Yes

** Check 3.3V

in Pin2, CN1

(Switch Unit).

Is it 3.3V?

No

No

Change Wire Harness

And connect properly

**Check 3.3V in (Pin

8, CN9702 on

B board . Is it 3.3V?

*VOLTAGE LEVEL FOR EACH PRESSED BUTTON (for QW, QWL, QT
switch unit only)

KEY Voltage

(average)

­+
No Input

0.000

1.05

2.420

Voltage

range

0.00 – 0.2

1.00 – 1.13

2.26 – 2.58

Yes

*Check Pin 1

Voltage Level in CN1

(switch unit). Is

voltage level

according to key

pressed?

Yes

Change B-board

Yes

NG

Change Switch Unit

No

**see next page for probing point of B board

30

BBA

Pin 8

BBE

31

3-2-3. DC-DC Converter Basic Block Diagram

Input Circuit

Side

19.5V Adaptor

Protection Circuit

Protection Circuit

Side

F6002

F6003

IC6019

12V DDCON

IC6014

5V DDCON

DDCON

Side

IC6017

1.2V DDCON

IC6012

1.5V DDCON

IC6018

1.8V DDCON

IC6010

3.3V_STBY DDCON

IC6009

3.3V DDCON

IC6016

1.1V DDCON

32

3-2-4. Adaptor Checking Procedure

Start

-ve

+ve

Ensure that

+ve probe is

touching the

needle.

Figure-1: How to check adaptor’s output
voltage.

Take out adaptor.

Check the output voltage.

18V – 22.5V?

(Refer Figure-1)

No (<18V or >22.5V)

Change adaptor.

Check the output voltage.

18V – 22.5V?

(Refer Figure-1)

No

AC Source

Yes

Yes

Refer ‘Protection Circuit -

Checking Procedure -next page.

Adaptor

33

3-2. NO POWER

3-2-5. Protection Circuit– Checking Procedure

Refer

Adaptor Checking Procedure

Start

B-Board

Check voltage at

Q6020 (PIN5-PIN8)

18V-22.5V?

YES

Refer

‘No Power -DDCON Checking Procedure’

NO (0V)

B-Board

Check voltage at

Q6020 (PIN1-PIN3)

18V-22.5V?

NO

B-Board

Remove Q6020 &

Check 19.5V_ADP line by

continuity test.

Short or OK?

OK

YES

SHORT

B-Board

Check voltage at Q6020 – PIN4

9V–11V or 18V–22.5V?

18V–22.5V

J6001 or Q6019 damage or

Adaptor not inserted properly

B-Board

Remove J6001 &

Check 19.5V_ADP line by

continuity test.

Short or OK?

OK

9V–11V

SHORT

B-Board

Replace Q6020 &
Check voltage at

Q6020 (PIN5-PIN8)

18V-22.5V?

NO

Refer

‘Fuse Checking Procedure’

Check & remove any foreign material

Check 19.5V_ADP line by

B-Board

On the board.

continuity test.

Short or OK?

OK

YES

Q6020 Damage

SHORT

PWB

Refer

Adaptor Checking Procedure

J6001 Damage

Foreign Material

34

3-2-6. Fuse Checking Procedure

Start

B-Board

Check F6002 by
Continuity Test.

NO

B-Board

Replace F6002 & check

continuity test at both

F6002 terminals.

Short at ‘Protection Circuit’ side

or ‘DDCON’ side?

DDCON

Refer No Power -DDCON

Checking Procedure.

OK

Protection Circuit

B-Board

Check F6003 by
Continuity Test.

NO

B-Board

Replace F6003 & check

Check continuity test at both

F6003 terminals.

Short at ‘Protection Circuit’ side

or ‘DDCON’ side?

DDCON

Refer No Power -DDCON

Checking Procedure.

OK

Refer DDCON

Checking Procedure.

Protection Circuit

B-Board

Check & remove any foreign material

On the board.

Check 19.5V line by continuity test.

Short or OK?

OK

Foreign Material

NO

Refer

Audio & LED Driver

Checking Procedure

35

Checking Point - BBE

F6003

EN_V

PANEL_PWR

3.3V_STBY

POWER1

1.5V

1.2V

19.5V & Q6020

19.5V

Q6020

19.5V_ADP

STBY_5V

F6002

36

Checking Point - BBA

PANEL_PWR

EN_V

1.5V

POWER1

3.3V_STBY

STBY_5V

F6003

1.2V

19.5V & Q6020

19.5V

Q6020

19.5V_ADP

F6002

F6002

37

3-2. NO POWER

3-2-7. : No Power- IC6014 (5V DDCON) Checking Procedure

Replace F6002 &

Check IC6014

PIN7-PIN9(BBA/BBE)

18V-22.5V?

Yes

Check JL6018.

18V-22.5V?

Start

F6002 damage

Refer Protection Circuit

Checking Procedure

Yes

No

No

Replace IC6014 &

Check IC6014

PIN7-PIN9 (BBA/BBE)

18V-22.5V?

No

Yes

IC6014 damage.

Check voltage at

JL6019(BBA/BBE).

5.00V-5.19V?

Yes

Refer IC6010

Checking

Procedure

No

No

Check IC6014

PIN7-PIN9(BBA/BBE)

18V-22.5V?

Yes

Check CL6054(BBA/BBE)

3.89V-4.71V?
No

Check R6228 &

R6229 mounting

condition.

Yes

OK

Replace IC6014 &

check again JL6019.

5.00V-5.19V?

No

Check JL6019 by

Continuity Test.

OK or short?

Short

Check & remove any

foreign material

attach to the board.

Still shorted?

Short

Refer to IC6010, USB &

H-Board

Checking Procedure

Yes

No

IC6014 damage.

Foreign material

38

IC6014 Checking Procedure- Checking Point

Board Name Board PWB (A side) Detail

BBE
(5V)

BBA
(5V)

IC6014

CL6054

JL6018

JL6019

CL6054

IC6014

JL6019

JL6018

39

3-2-8. No Power-IC6010 (3.3V_STBY DDCON) Checking Procedure

Start

Check voltage at

JL6036(BBA/BBE).

3.267V-3.333V?

Yes

Refer IC6017

Checking

Procedure

No

Refer IC6014

Checking Procedure

No

Check CL6035(BBA/BBE)

5.00V-5.19V?

Yes

Refer IC6014

Checking Procedure

No

Check CL6035(BBA/BBE)

5.00V-5.19V?

Yes

OK

Replace

IC6010 & check

again at
JL6036.

3.267V-

3.333V?
No

Check JL6036 by

Continuity Test.

OK or short?

Short

Check & remove any

foreign material

attach to the board.

Still shorted?

Short

Yes

No

IC6010 damage.

Foreign material

MTK damage or

Refer to H-Board

Checking

Procedure

40

IC6010 Checking Procedure (Checking Point)

Board Name Board PWB (A side) Detail

BBE
(STBY_3.3V)

BBA
(STBY_3.3V)

IC6010

JL6036

CL6035

CL6035

IC6010

JL6036

41

3-2.9. No Power-IC6017(1.2V DDCON) Checking Procedure

Start

Check voltage at

JL6040(BBE)/
JL6031(BBA).

1.18V-1.22V?
Yes

End

No

Refer IC6014

Checking Procedure’

No

Check CL6064(BBA/BBE)

5.00V-5.19V?

Yes

TV in stand-by mode.

No

Check JL6027(BBA/BBE)

3.00V-3.33V?

Yes

OK

Replace

IC6017 & check

again
JL6040(BBE)/
JL6031(BBA).

1.18V-1.22V?

No

Check JL6040(BBE)/

JL6031(BBA).

by Continuity Test.

OK or short?

Short

Check & remove any

foreign material

attach to the board.

Still shorted?

Short

Yes

No

IC6017 damage.

Foreign material

MTK damage.

42

IC6017 Checking Procedure (Checking Point)

Board Name Board PWB (A side) Detail

BBE
(1.2V)

BBA
(1.2V)

CL6064

IC6017

JL6040

CL6065

CL6064

IC6017

CL6065

JL6031

43

3-2-11. No Power-IC6012(1.5V DDCON) Checking Procedure

Start

Check voltage at

JL6037(BBE)/
JL6033(BBA).

1.48V-1.54V?
Yes

End

No

Refer IC6014

Checking Procedure’

No

Check CL6039(BBA/BBE)

5.00V-5.19V?

Yes

TV in stand-by mode

or MTK damage.

No

Check CL6043(BBA/BBE)

3.00V-3.33V?

Yes

OK

Replace

IC6012 & check

again
JL6037(BBE)/
JL6033(BBA).

1.48V-1.54V?

No

Check JL6037(BBE)/

JL6033(BBA).

by Continuity Test.

OK or short?

Short

Check & remove any

foreign material

attach to the board.

Still shorted?

Short

Yes

No

IC6012 damage.

Foreign material

MTK damage.

44

IC6012 Checking Procedure (Checking Point)

Board Name Board PWB (A side) Detail

BBE
(1.5V)

BBA
(1.5V)

CL6039

IC6012

JL6037

CL6043

CL6039

JL6033

IC6012

CL6043

45

3-2-12. No Power-IC6018(1.8V DDCON) Checking Procedure

Start

Check voltage at

JL6039(BBE)/
JL6032(BBA).

1.78V-1.86V?
Yes

End

No

Refer IC6014

Checking Procedure’

No

Check CL6069(BBA/BBE)

5.00V-5.19V?

Yes

TV in stand-by mode.

No

Check CL6070(BBA/BBE)

3.00V-3.33V?

Yes

OK

Replace

IC6018 & check

again
JL6039(BBE)/
JL6032(BBA).

1.78V-1.86V?

No

Check JL6039(BBE)/

JL6032(BBA).

by Continuity Test.

OK or short?

Short

Check & remove any

foreign material

attach to the board.

Still shorted?

Short

Yes

No

IC6018 damage.

Foreign material

Refer Tuner

Checking

Procedure

46

IC6018 Checking Procedure (Checking Point)

Board Name Board PWB (A side) Detail

BBE
(3.3V)

BBA
(3.3V)

CL6012

CL6037

IC6009

JL6038

CL6037

IC6009

JL6034

CL6012

47

3-2-13. No Power-IC6009( 3.3V DDCON) Checking Procedure

Start

Check voltage at

JL6038(BBE)/

JL6034(BBA).

3.267V-3.333V?
Yes

End

No

Refer IC6014

Checking Procedure’

No

Check CL6037(BBA/BBE)

5.00V-5.19V?

Yes

TV in stand-by

mode.

No

Check CL6012(BBA/BBE)

3.00V-3.33V?

Yes

OK

Replace IC6009

& check again

at

JL6038(BBE)/
JL6034(BBA).

3.267V-3.333V?
No

Check JL6038(BBE)/

JL6034(BBA) by

Continuity Test.

OK or short?

Short

Check & remove any

foreign material

attach to the board.

Still shorted?

Short

Yes

No

IC6009 damage.

Foreign material

Refer LED Driver,

Nand, USB, Audio,

H-Board, Tuner,

MTK Checking

Procedure

48

IC6009 Checking Procedure (Checking Point)

Board Name Board PWB (A side) Detail

BBE
(1.8V)

BBA
(1.8V)

CL6069

IC6018

CL6070

JL6039

CL6069

IC6018

CL6070

JL6032

49

3-2-14. No Power-IC6016(1.1V DDCON) Checking Procedure

Start

Check voltage at

JL6035(BBA/BBE).

1.09V-1.11V?

Yes

End

No

Refer IC6010

Checking Procedure’

No

Check CL6037(BBA/BBE)

3.267V-3.333V?

Yes

TV in stand-by mode

or MTK damage.

No

Check CL6008 (BBA/BBE)

3.00V-3.33V?

Yes

OK

Replace IC6016

& check again at

JL6035

(BBA/BBE).

1.09V-1.11V?
No

Check JL6035
(BBA/BBE) by

Continuity Test.

OK or short?

Short

Check & remove any

foreign material

attach to the board.

Still shorted?

Short

Yes

No

IC6016 damage.

Foreign material

Refer Beryls

Checking

Procedure

50

Troubleshooting

IC6016 Checking Procedure (Checking Point)

Board Name Board PWB (A side) Detail

BBE
(1.1V)

BBA
(1.1V)

JL6035

IC6016

CL6008

CL6062

JL6035

CL6060

IC6016

CL6008

51

Troubleshooting

3-2-15. No Power-IC6019(12V DDCON) Checking Procedure

Replace F6003 &

Check IC6019

PIN-2 (BBA/BBE)

18V-22.5V?

Yes

Check JL6018.

18V-22.5V?

Start

F6003 damage

Refer Protection Circuit

Checking Procedure

Yes

No

No

Replace IC6019 &

Check IC6019

PIN-2 (BBA/BBE)

18V-22.5V?

No

Yes

IC6019 damage.

Check voltage at

JL6030(BBA)

JL6034(BBE)

11.52V-12.82V?
Yes

End

No

No

Check IC6019

PIN-2 (BBA/BBE)

18V-22.5V?

Yes

Check IC6019 (PIN-3)

3.00V-3.33V?
No

MTK Problem or

TV in stand-by

mode.

Yes

OK

Replace IC6019 &

check again
JL6030(BBA)
JL6034(BBE)

11.52V-12.82V?
No

Check JL6030(BBA)

JL6034(BBE)

by Continuity Test.

OK or short?

Short

Check & remove any

foreign material

attach to the board.

Still shorted?

Short

Refer to LVDS Checking

Procedure

Yes

No

IC6014 damage.

Foreign material

52

Troubleshooting

No Power-IC6019 Checking Procedure (Checking Point)

Board Name Board PWB (A side) Detail

BBE
(12V)

BBA
(12V)

F6003

JL6018

PIN-2

PIN-3

JL6034

JL6030

PIN-3

PIN-2

F6003

JL6018

53

3-3. No Picture

3-3-1. Screen Blank, No Backlight [For QW/QT]

Screen Blank, No backlight

Check R9021

R >9Ω and <11Ω?

Yes

Check REG9V (AC ON)

V=8.9V to 9.1V?

Yes

Suspect : Other Part damage

Change the board

No

Yes

No

Yes

Change R9021

AC ON screen blank, No backlight?

Change IC9000

AC ON screen blank, No backlight?

No

R9021 broken

No

IC9000 broken

54

Screen Blank, No Backlight - Checking Point [1/2]-BBA

F9000, L9001, D9001, Q9000

L9001

F9000

S

Q9000

D9001

D

RB9001, Q9001, D9002, R9021

RB9001

Q9001

D9002

R9021

C9026, C9027, CN9000, IC9000, LED_VCC

C9026

IC9000

C9027

LED_VCC

CN9000

Q9000 RDS Measurement

Multimeter

-ve

+ve

55

Screen Blank, No Backlight - Checking Point [2/2]-BBE

F9000, L9001, D9001, Q9000

L9001

F9000

S

Q9000

D9001

D

RB9001, Q9001, D9002, R9021

RB9001

Q9001

D9002

R9021

C9026, C9027, CN9000, IC9000, LED_VCC

C9026

IC9000

C9027

LED_VCC

CN9000

Q9000 RDS Measurement

Multimeter

-ve

+ve

56

3-3-2. Screen Blank, Backlight visible(General Checking)

START

Replace LVDS FFC

Harness

Picture OK

LVDS FFC Harness Problem

Still No Picture

Troubleshooting Detail No Picture (Main Board Issue)

START

Still No

Check

1.1 V Supply Voltage
Is it 1.1V?

Picture

Check 3.3V_PANEL

Voltage

Is it 3V- 3.33V?

Change Main Board

Main board problem

Still No
Picture

Check BE_RST Voltage

Picture OK

Is 3V-3.33V ?

Still no picture

Have

Voltage

Suspect IC5001 NG

Change IC5001

Panel Problem

END

Picture OK

No Voltage

Refer to 1.1V DDCON

Troubleshooting manual

(IC 6016)

No Voltage

Refer to Panel I2C

Checking Manual

No Voltage

Suspect IC5000 NG

Replace Board

57

Screen Blank, Backlight visible(Checking Point )-BBA

Check Item:

1. Supply voltage

2. Supply voltage impedance

BE_RST

3.3V_PANEL
Supply

1.1V Supply

58

Screen Blank, Backlight visible(Checking Point )-BBE

Check Item:

1. Supply voltage

2. Supply voltage impedance

3.3V_PANEL
Supply

BE_RST

1.1V Supply

59

3.3.3 : No Picture: Tuner (for Analogue , Digital and Satellite)

RF input no picture / noisy picture

Check RF source cable

and antenna, OK?

OK

Check Tuner power line:

3.3V at CL1005 = 3.3V?

1.8V at C1019 = 1.8V?

OK

Tuning for Analog, Digital or

Satellite?

NG

NG

Digital

Change RF cable and antenna

For 1.8V Please refer DDCON

troubleshooting

For 3.3V Please refer DDCON

troubleshooting

Check Tuner power line

12V at F1000 = 12V?

Satellite

Change part

Problem solved?

NG

Check fuse F1000 continuity.

Part broken?

YES

Please refer DDCON 12V LNB

F1000

NG

Change Tuner Module EU-

(Please refer page Assemble

and Dissemble Tuner Module)

Voltage troubleshooting

OK

T2S2

(CE243ZP )

NO

Done (End)

Refer Analog Tuning

For TW , LA-ATSC
(MX/UC) , LA-ISDB(BR) ,

PH_ISDB-T & AEP (STD)
only

Refer Digital Tuning 1

OK

For AEP-T2S2, PA_T2,
CH and LA-T2(COL) only

Refer Digital Tuning 2

60

No Picture : Tuner (for Analogue , Digital and Satellite)-Checking Point

Board Name Board PWB (B side) Detail

BBA board

(A side)

(3.3V)

C1005

(1.8V)

C1019

BBE board

(A side)

(3.3V)

C1005

(1.8V)

C1019

BBA board

(A side)

Detail

BBE board

(A side)

C1019

C1005

F1000

C1019

Detail

C1005

61

3.3.4 : For Analogue Tuning Failed ( All destination)

Analog Tuning

For Other destination

Channel can be lock?

OK

For LA-ISDB(BR/AR),
PH_ISDB-T &
LA-T2(COL)

NG

Notes:

- Parts for IFOUTN1 line: FB1000, C1011, C1027, R1055, R1057

- Parts for IFOUTP1 line: FB1001, C1012, C1028, R1056

- Parts for IFAGC1 line: C1029, R1058

Confirm Antenna or Cable connection

Picture quality is noisy?

Not Noisy

Done (End)

Noisy

OK

Check part mounting condition

for analog control line

“IFOUTN1, IFOUTP1, IFAGC1”

OK

Please re-upgrade Firmware

(PKG), Check again Picture

quality?

NG

NG

Change Tuner Module

(Please refer page Assemble and Dissemble Tuner Module)

OK

Problem solved?

NG

Change B-board

62

For Analogue Tuning Failed -Checking Point [1/4]

Board Name Board PWB (A side) Detail
BBA board

(A side)
(IFOUTN1)

FB1000
C1011
C1027
R1055

(IFOUTP1)

FB1001
C1012
C1028
R1056

C1027

C1027

C1027

FB1001

C1056

C1028

C1011

C1012

FB1000

C1011

63

For Analogue Tuning Failed -Checking Point [2/4]

Board Name Board PWB (A side) Detail

BBA board
(A side)

(IFAGC1)

C1029
R1058

R1058

C1029

64

For Analogue Tuning Failed - Checking Point [3/4]

Board Name Board PWB (A side) Detail

BBE board

(A side)
(IFOUTN1)

FB1000
C1011
C1027
R1055

(IFOUTP1)

FB1001
C1012
C1028
R1056

R1057

R1055

C1027

C1028

R1056

FB1001

C1012

FB1000

C1011

65

For Analogue Tuning Fail ed -Checking Point [4/4]

Board Name Board PWB (A side) Detail

BBE board

(A side)

(IFAGC1)

C1029
R1058

R1058

C1029

66

3-3-5. For Digital Tuning 1: Only for TW , AM-ATSC(MX/UC) , LA-ISDB(BR/AR) , PH_ISDB-T , AEP(STD) .

LA-ISDB(BR/AR)

Confirm Antenna or Cable connection

Confirm UEC of digital RF by Service mode

If UEC > 0

Digital Tuning 1

Channel can be lock?

NG

Sound is normal?

No sound

For Other
destination

OK

OK

If UEC = 0

Notes:

- Parts for IFOUTN1 line: FB1000, C1011, C1027, 1055, R1057

- Parts for IFOUTP1 line: FB1001, C1012, C1028, R1056

- Parts for IFAGC1 line: C1029, R1058

- Parts for M_SCL line: R5024

- Parts for M_SDA line: R5021

Check part mounting condition for

digital control line

“M_SCL,M_SDA”

OK

Change B-board

NG

Check part mounting condition for digital data line

“IFOUTN1, IFOUTP1, IFAGC1”

OK

Please re-upgrade Firmware

(PKG),

Check again Picture quality?

OK

Done (End)

NG

NG

Change Tuner Module

(Please refer page Assemble and Dissemble Tuner Module)

OK

Problem solved?

NG

Change B-board

67

For Digital Tuning 1: Only for TW , AM-ATSC(MX/UC) , LA-ISDB(BR/AR) , PH_ISDB-T , AEP(STD)- Checking Point [1/2]

Board Name Board PWB (A side) Detail

BBA board

(A side)
(IFOUTN1)

FB1000
C1011

C1027

C1027
R1055

C1027

(IFOUTP1)

FB1001
C1012
C1028

C1027

R1056

FB1001

C1056

C1028

C1011

C1012

C1011

FB1000

68

For Digital Tuning 1: Only for TW , AM-ATSC(MX/UC) , LA-ISDB(BR/AR) , PH_ISDB-T , AEP(STD)- Checking Point [ 2/2]

Board Name Board PWB (A side) Detail

BBA board

(A side)

(IFAGC1)

C1029
R1058

(M_SCL)

R5024

(M_SDA)

R5021

R1058

R5024

R5021

C1029

69

3-3-6. For Digital Tuning 2: AEP-T2S2, EU-T2, PA-T2, CH, and LA-T2(COL).

For and LA-T2(COL) only For AEP-T2S2

Confirm ANT or Cable connection

Digital Tuning 2

For EU-T2,
PA-T2,
and
CH

Confirm ANT or Satellite connection

Notes:

- Parts for M_SCL line: R5024

- Parts for M_SDA line: R5021

- Parts for DEMOD_TSCLK line: R1072

- Parts for DEMOD_TSDATA line: R1071

NG

Channel can be lock?

OK

Sound is normal?

OK

No sound

Confirm UEC of digital RF by Service mode

If UEC > 0

Check part mounting condition for digital data line

“DEMOD_TSCLK, DEMOD_TSDATA”

O

Please re-upgrade Firmware (PKG),

K

Check again Picture quality?

If UEC = 0

NG

NG

Check part mounting condition for

digital control line

“M_SDA,M_SCL”

NG

Change B-board

OK

OK

Done (End)

Change Tuner Module

(Please refer page Assemble and Dissemble Tuner Module)

OK

Problem solved?

NG

Change B-board

70

For Digital Tuning 2: AEP-T2S2, EU-T2, PA-T2, CH, and LA-T2(COL)-Checking Point [1/2]

Board Name Board PWB (A side) Detail
BBA board

(A side)

(M_SCL)

R5024

(M_SDA)

R5021
(DEMOD_TSCLK )

R1072
(DEMOD_TSCLK )

R1071

R1072

R1072

R5024

R5021

71

For Digital Tuning 2: AEP-T2S2, EU-T2, PA-T2, CH, and LA-T2(COL)-Checking Point [2/2]

Board Name Board PWB (A side) Detail
BBE board

(A side)

(M_SCL)

R5024

(M_SDA)

R5021
(DEMOD_TSCLK )

R1072
(DEMOD_TSCLK )

R1071

R1072

R1071

R5024

R5021

72

3-3-7. : USB Port1 – No Detection / Cannot Play / No Picture / No Sound

TV turn ON condition:

Change to ON

Detection OK

and

Picture and Sound OK

OK

OFF

NG

START

Do a Factory Setting

*1 Confirm USB Auto

Start is ON or OFF

ON

Check 5V at
C7020 (USB

port1)

Have 5V but No detection

*2 Confirm USB

file format

OK

Detection OK

OK

Picture OK

OK

Remarks:

*1 Confirm USB Auto Start at Set-up Menu.

*2 Confirm with OSD on bottom panel, if
playback not support.
Please refer to IM for detail supported USB
format.

No 5V

NG

Change to supported USB format

USB format OK but No detection

Picture NG

Sound OK

OK

END

Main IC (IC5000) problem

Sound NG

Audio IC IC4001) problem

Change B-Board

73

3-3-8. : USB Port2 – No Detection / Cannot Play / No Picture / No Sound

TV turn ON condition:

Change to ON

Detection OK

and

Picture and Sound OK

OK

OFF

NG

START

Do a Factory Setting

*1 Confirm USB Auto

Start is ON or OFF

ON

Check 5V at
C7021 (USB

port2)

Have 5V but No detection

*2 Confirm USB

file format

OK

Detection OK

OK

Picture OK

OK

Remarks:

*1 Confirm USB Auto Start at Set-up Menu.
*2 Confirm with OSD on bottom panel, if

playback not support.
Please refer to IM for detail supported USB
format.

*3 For model have USB Port2

No 5V

NG

Change to supported USB format

USB format OK but No detection

Hub IC (IC7001) problem

Picture NG

Main IC (IC5000) problem

Sound OK

OK

END

Sound NG

Audio IC IC4001) problem

Change B-Board

74

USB (B-board Checking) – Checking 5V Points [1/2]

SECTION 3

TROUBLESHOOTING

Board

Name

BBA
(QW;
QT)

BBE
(QW;
QW-L;
QT)

Board PWB (A side) Detail

C7020

C7020

C7021

Have 5V?

C7021

Have 5V?

75

USB (B-board Checking) – Checking 5V Points [2/2]

Board

Name

BB3
(SE3;
SE3N)

Board PWB (A side) Detail

Have 5V?

(*3) C7021

Remark:
(*3) For model have USB Port2

C7020

76

3-3-9 : Ethernet – No Connect

START

Check if TV has good

cable connection

Set-up  Network setup

Failed

Check if the Ethernet

cable is good

NG

Change a good cable

TV turn ON condition:

OK

OK

Failed

Check if any abnormal

or broken point on

Ethernet Connector

No

Check if TV has MAC Address

Set-up  Network setup

Yes

Yes

Connector NG

Change B Board

T7000 or T7001 or Main IC

(IC5000) NG

Change B Board

Check TV has connection OK

Set-up  Network setup

OK

Failed

Invalid MAC Address

Change B Board

END

77

3-3-10 : CI Slot – No Detection / No Picture / No Sound

START

TV turn ON condition:

Remarks:

*1 Important: Please use a known Good CICAM
for testing

Check CI

or

CI+ case

CI+

Check service menu for

CI+ Credentials  CI+ Key

Invalid key

Invalid Key

Change B Board

CI

Valid key

*1 Insert Good CICAM and

Check if TV can detect CICAM

Channel Setup Digital Setup

 CA Module

No

Check any pin on
CI Slot is bend or

broken.

Yes

Connector NG

Change B Board

Yes

No

Insert CICAM and

Check CI 5V

at PIN 17/18/51/52

No

IC7000 NG

Change B Board

Yes

*2 Insert CICAM and

Check CI Detection

at Pin 36/67

No

*2 Both CI Detection at Pin 36/67 should be 3.3V
before CICAM insert and 0v when CICAM
inserted.

*3 Confirm these 13 resistors part are mount
properly.

Yes

*3 Check Resistor

Part mounting

Yes

END

Power 3.3V NG
Change B Board

NG

Part Knock Off

Change B Board

Picture and

Sound OK

NG

Main IC (IC5000) NG

Change B Board

78

Yes

CI Slot (B-board Checking) – Checking 5V Points [1/3]

Board

Name

BBE
(QW;
QW-L;
QT)

Board PWB (A side) Detail

CI 5V at PIN
17/18/51/52

79

CI slot (B-board Checking) – Checking CI Detection Pin Points [2/3]

Board

Name

BBE
(QW;
QW-L;
QT)

Board PWB (A side) Detail

Card Detect 2 – PIN 67

Card Detect 1 – PIN 36

Remark:
Both CI Detection Pin should be 3.3V before CICAM insert and 0v when CICAM

inserted.

80

Troubleshooting

CI slot (B-board Checking) – Checking Resistor Part Mounting Points [3/3]

Board

Name

Board PWB (A side) Detail

BBE
(QW;
QW-L;
QT)

Ref. No. Location Ref. No. Location
RB7003 1 RB7010 8
RB7002 2 RB7011 9
RB7000 3 RB7008 10

8

1

2

4

5

6

9

7

12

10

11

13

RB7001 4 RB7006 11
RB7004 5 R7000 12
RB7007 6 R7001 13
RB7009 7

3

Remark:
Confirm these 13 resistors part are mount properly or not.

81

Troubleshooting

3-3-11. HDMI No Picture (a)

1. HDMI NO PICTURE

[NG] No picture

[NG] No picture

[NG] No picture

[OK] Connector no abnormality

HDMI No Picture

Verify with other

HDMI source /cable

Factory reset

HDMI source & re-verify

Verify by using laptop

Physical appearance

check on

HDMI connector

[OK] Picture recovered

[OK] Picture recovered

[OK] Picture recovered

[NG] Connector abnormal

[NG] No picture

HDMI source/
cable problem

HDMI source

setting problem

Go to

"HDCP Failure Analysis"

HDMI Connector Broken

Replace → Re-verify

Checking condition:

- TV ON & HDMI Source ON except if the flow mentioned is AC OFF.

- TV HDMI input connected to HDMI source output

- TV Input: HDMI

[OK] Picture recovered

END

Check voltage of +5V Power

HDMI1: Pin18 @ CN3601
HDMI2: Pin18 @ CN3600

[OK] Vdc = 4.8 ~ 5.3V

Check voltage of HPD
HDMI1: Pin19 @ CN3601
HDMI2: Pin19 @ CN3600

[OK] Vdc = 2.4 ~ 5.3V

“Main Flow Continue"

Go to

[NG] Vdc ≠ 4.8 ~ 5.3V

[NG] Vdc ≠ 2.4~ 5.3V

Go to

“+5V Power Failure Analysis"

Go to

“HPD Failure Analysis"

82

3-3-11. HDMI No Picture – Continue (b)

1. HDMI NO PICTURE

[OK] Impedance = 100Ω

Pin15 (SCL) Pin 16 (SDA) @ CN3601

Pin15 (SCL) Pin 16 (SDA) @ CN3600

[OK] Vdc = 3.5 ~ 5.5V

Main Flow Continue

Check impedance of

series resistor
at SCL & SDA
during AC OFF

HDMI1:

R3608 (SCL) & R3610 (SDA)

HDMI2:

R3618 (SCL) & R3617 (SDA)

Check voltage of SCL & SDA line

HDMI1:

HDMI2:

Check voltage @ TMDS lines

HDMI1:

Pin1,3,4,6,7,9,10 & 12 @ CN3601

HDMI2:

Pin1,3,4,6,7,9,10 & 12 @ CN3600

[NG] Impedance ≠ 100Ω

[NG] No picture

[NG] Vdc ≠ 3.5 ~ 5.5V

[NG] Vdc ≠ 2.6 ~ 3.475V

Series Resistor Broken

Replace → Re-verify

Go to

“I2C Failure Analysis"

Go to

"TMDS Failure Analysis"

Checking condition:

- TV ON & HDMI Source ON except if the flow mentioned is AC OFF.

- TV HDMI input connected to HDMI source output

- TV Input: HDMI

[OK] Picture recovered

[OK] Vdc = 2.6 ~ 3.475V

Replace B-board & re-verify

Escalate this issue to

R&D team

END

83

3-3-12. : HDMI No Picture – HDCP Failure Analysis

HDCP Failure Analysis

Checking condition:

- TV ON & HDMI Source ON except if the flow mentioned is AC OFF.

- TV HDMI input connected to HDMI source output

- TV Input: HDMI

Verify the HDMI source is compatible

with HDCP version 1.4

[NG] Not Compatible

HDMI Source HDCP

incompatible version

END

[OK] Compatible

Replace B-board & re-verify

[NG] No picture

[OK] Picture recovered

HDCP key corrupted

Escalate this issue to

R&D team

84

3-3-13. HDMI No Picture – +5V Power Failure Analysis

1. HDMI NO PICTURE

+5V Power Failure

Analysis

Check impedance

of varistor during AC OFF

HDMI1: VD3607

HDMI2: VD3606

[NG] Short circuit

[OK] Open circuit

Go back to "Check

voltage of HPD"

Varistor Broken

Replace broken Varistor

& Re-verify

[OK] Picture recovered

END

[NG] No picture

Checking condition:

- TV ON & HDMI Source ON except if the flow mentioned
is AC OFF.

- TV HDMI input connected to HDMI source output

- TV Input: HDMI

85

3-3-14 : HDMI No Picture – HPD Failure Analysis

1. HDMI NO PICTURE

HPD Failure Analysis

Check impedance of Varistor, Diode

& Resistor during AC OFF

HDMI1: VD3609, D3602, R3602, R3604 & Q3600

HDMI2: VD3608, D3601, R3601, R3644, R3620 &

[NG] Any of the part as below
VD3609, VD3608: = Short circuit

R3602,R3601: ≠ 33Ω
R3604,R3620: ≠ 1KΩ
R3644: ≠ 0Ω

Q3600, Q3611: V

CE = Short

Q3611

[OK] All the part as below

VD3609, VD3608: ≠ Short circuit
R3602,R3601: = 33Ω
R3604,R3620: = 1KΩ
R3644: = 0Ω

Q3600, Q3611: V

CE = Open

[NG] short Circuit / Low impedance

[OK] Picture recovered

Checking condition:

- TV ON & HDMI Source ON except if the flow mentioned is AC OFF.

- TV HDMI input connected to HDMI source output

- TV Input: HDMI

Check HPD GPIO Line Short to Ground

during AC OFF

HDMI1: Pin 19 @ CN3601
HDMI2: Pin 19 @ CN3600

Internal Main SoC (IC5000) broken

Replace B-board & re-verify

[OK] Open Circuit

Varistor/Diode/Resistor/

Transistor is broken

Replace the Broken Varistor/

Diode/Resistor & Re-verify

[OK] Picture recovered

END

[NG] No picture

[NG] No picture

Escalate this issue to

R&D team

Go back to "Check

impedance of serial

resistor at SCL & SDA

during AC OFF""

86

3-3-15 : HDMI No Picture – I2C Failure Analysis

1. HDMI NO PICTURE

I2C Failure Analysis

Checking condition:

- TV ON & HDMI Source ON except if the flow mentioned is AC OFF.

- TV HDMI input connected to HDMI source output

- TV Input: HDMI

Check impedance of network resistor

during AC OFF

HDMI1: RB3608
HDMI2: RB3611

[NG] Impedance ≠ 47KΩ

Network resistor broken

Replace network resistor

& Re-verify

Check SCL & SDA GPIO Line Short to Ground

[OK] Impedance ≈ 47KΩ

[OK] Open Circuit (≈ 100kΩ)

HDMI1: Pin15 (SCL) ,Pin 16 (SDA) @ CN3601
HDMI2: Pin15 (SCL) ,Pin 16 (SDA) @ CN3600

[NG] short Circuit / Low impedance

Internal Main SoC (IC5000) broken

[OK] Picture recovered

Replace B-board & re-verify

[NG] No picture

Escalate this issue to

R&D team

Go back to "Check

voltage at TMDS lines"

[NG] No picture

[OK] Picture recovered

END

87

3-3-16 : HDMI No Picture – TMDS Failure Analysis

1. HDMI NO PICTURE

TMDS Failure Analysis

Checking condition:

- TV ON & HDMI Source ON except if the flow mentioned is AC OFF.

- TV HDMI input connected to HDMI source output

- TV Input: HDMI

Check impedance of network resistor

, serial resistor and CMF(Filter) during

AC OFF

HDMI1 : RB3600,RB3601,RB3604,RB3605
HDMI2 : RB3602,RB3603,RB3606,RB3607

,R3622,R3623

[NG] Impedance ≠ 0Ω

Network resistor/serial

resistor/ CMF broken

Replace Network resistor/

serial resistor/CMF & Re-verify

[OK] Impedance ≈ 0Ω

[NG] No picture

Check TMDS GPIO Line Short to Ground

HDMI1: Pin1, 3, 4, 6, 7, 9, 10 & 12 at CN3601
HDMI2: Pin1, 3, 4, 6, 7, 9, 10 & 12 at CN3600

[NG] short Circuit / Low impedance

Internal Main SoC (IC5000) broken

[OK] Picture recovered

Replace B-board & re-verify

during AC OFF

[NG] No picture

Escalate this issue to

R&D team

[OK] Open Circuit

[OK] Picture recovered

END

88

3-3-17 : CEC Not Function- Bravia Sync (CEC) not function- HDMI

Bravia Sync (CEC)

Not Function

Checking condition:

- TV ON & HDMI Source ON except if the flow mentioned is AC OFF.

- TV HDMI input connected to HDMI source output

- TV Input: HDMI

Check CEC BRAVIA Sync

Device List "Enable"

[NG] No CEC device list

Source side Support CEC

[OK] Support CEC

Check Source and TV

CEC/BRAVIA Sync setting

[OK] Setting is "ON"

Change other HDMI

cable that proven OK

& Re- Verify

[NG] CEC not function

Physical appearance

check on HDMI connector

[OK] Connector no abnormality

Check voltage at CEC pin

[OK] Voltage ≈ 2.5~3.63V

Replace B-board &

re-verify

[OK] Source device listed

[NG] CEC not function

[NG] Not Support CEC

[OK] Setting is "OFF"

[OK] CEC functioning

[NG] Connector abnormal

[NG] Voltage ≠ 2.5~3.63V

[OK] VD: Open circuit, R3613: ≈100Ω

Internal Main SoC

(IC5000) broken

Make Factory reset
To Source and TV "

Source side not

support CEC

Source and TV CEC

setting problem

Customer HDMI cable

problem

HDMI connector broken

Check impedance of

varistor &

resistor during AC OFF

VD3601, VD3600 & R3613

[OK] CEC functioning

[NG] CEC not function

[NG] CEC not function

[NG] VD: Short circuit,

R3613: ≠100Ω

[NG] short Circuit /
Low impedance

[OK] Open Circuit

Turn to “ON” CEC

Setting & Re-verify

Replace HDMI

Connector & Re-verify

Replace varistor & resistor

& Re-verify

[NG] CEC not function

Check CEC GPIO

Line Short to Ground

During AC OFF

Pin 13 @ CN3600/CN3601

[OK] CEC functioning

[OK] CEC functioning

[OK] CEC functioning

Escalate this issue

to R&D team

END

89

HDMI No Picture- Checking Point[1/8]

QW – BBA (Side A)

HDMI1

(CN3601)

HDMI2

(CN3600)

90

HDMI No Picture- Checking Point[2/8]

HDMI1

QW – BBA (Side A)

R3608

R3610

VD3607

VD3609

Pin 19

CN3601

RB3608

R3604

D3602

RB3605

RB3601

R3602

Q3600

RB3604

Pin 1

CN3601

RB3600

91

HDMI No Picture- Checking Point[3/8]

HDMI2

QW – BBA (Side A)

D3601

Q3611

R3622

R3623

RB3607

R3618

R3617

RB3611

R3644

RB3606

R3601

RB3602

Pin 1

CN3600

RB3603

VD3608

Pin 19

VD3606

R3620

92

HDMI No Picture- Checking Point[4/8]

QW – BBA (Side A)

CL5007

93

HDMI No Picture- Checking Point[5/8]

QW – BBE (Side A)

HDMI1

(CN3601)

HDMI2

(CN3600)

94

HDMI No Picture- Checking Point[6/8]

HDMI1

CN3601

QW – BBE (Side A)

Q3600

R3604

VD3607

Pin 19

D3602

R3602

VD3609

RB3601

Pin 1

RB3605

RB3604

R3610

RB3600

R3608

RB3608

95

HDMI No Picture- Checking Point[7/8]

QW – BBE (Side A)

HDMI2

D3601

Q3611

R3644

R3622

R3623

RB3607

R3618

R3617

R3601

RB3606

RB3611

Pin 1

RB3602

CN3600

RB3603

Pin 19

VD3608

VD3606

R3620

96

HDMI No Picture- Checking Point[8/8]

QW – BBE (Side A)

R3613

CL5007

97

3-3-19. WiFi- Cannot Search Device - Connection Failed

Start

Connection Failed

Check Built-In WiFi

UI

OK

Check WiFi Direct

UI

OK

NG: Built-In WiFi Off

NG: WiFi Direct Off

WiFi Feature is

Not Enable

WiFi Direct Feature is

Not Enable

Check STBY_5V

Q9901

OK

Check Harness

Connection

CN9900

OK

Check TP-VCC

J20H090

OK

Check AP/Device

OK

Change B*Board /

WiFi Module

NG: DC Voltage not 5V

NG: Harness Connection Not Ok

NG: DC Voltage is not 5V

NG: Signal Strength Low

Mosfet Q9901

Broken

(Change B*Board)

Harness not in
Good Condition

(Change Harness)

WiFi Module

J20H090 Broken

(Change WiFi Module)

AP Device

Problem

(Change AP/Device)

OK

END

Connection Success

98

WiFi- Cannot Search Device - Connection Failed – Checking Point [1/2]

Board Name Board PWB (A side) Detail
B*Board

(BBA,BBE)
Q9901

B*Board
(BB3)
Q9901

BBA

BBE

Q9901

Q9901

Q9901

Q9901

Q9901

99

WiFi- Cannot Search Device - Connection Failed – Checking Point [2/2]

Board Name Board PWB (B side) Detail

WiFi Module
J20H090

TP-VCC

TP-VCC

100