Sony KD-55XE800 Schematic

HISTORY INFORMATION FOR THE FOLLOW ING MANUAL:

SERVICE MANUAL (COMMON)

GN3TR CHASSIS

Version Date Subject

1 10/2016 1st Issue.

Segment: KF

2 02/2017 Add 49in and 55in models

LCD TV

9-888-720-02

For SM - Unique , please refer :

9-888-720-Ax ( America )

9-888-720-Cx ( China)

9-888-720-Ex ( Europe )

9-888-720-Px ( Pan As ia)

SERVICE MANUAL (COMMON)

GN3TR CHASSIS

Segment: KF

LCD TV

MODEL LIST

THIS SERVICE MANUAL CONTAINS COMMON INFORMA TION F OR BELOW REGIONS AND MODELS:

REGION ASIA AMERICA EUROPE CHINA JAPAN

MODEL

FW-43XE8* FW-49XE8* FW-55XE8* KD-43XE8* FW-49X8*E FW-55X8*E KD-43X8*E KD-49XE8* KD-55XE8* KJ-43X8*E KD-49X8*E KD-55X8*E XBR-43X8*E KJ-49X8*E XBR-55X8*E

XBR-49X8*E

4. SERVICE ADJUSTMENTS

5. DIAGRAMS

TABLE OF CONTEN TS

Section Title Page

1. SAFETY NOTES 5

2. SELF DIA GNOSTIC FUN CTION 14

3. TROUBL E SHOOTIN G 18 124

135

Please refer to Service Procedure for Panel , Board and Software Change / Upgrade Manual , part number 9-888-719-0x in TISS .

Please refer Service Manual – Unique for below information :

-Safety Warnings

-Wire Dressing

-Circuit Board Location

-Disassembly and Exploded View.

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

4

SECTION 1

SAFETY NOTES

1-1. Warn ings 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 to follow these guidelines to protect your property and avoid causing serious injury :

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

• Correct hand placement while carrying the TV is very important for 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 components with Sony parts whose part numbers appear as shown in this 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 operation is suspected.

!

1-2. Caution Handling o f LCD Panel

When repairing t he LCD Panel, make s ure you are grounded wi th a wrist band. When repairing t he LCD Panel on the wall, the panel must be secur ed usi ng the 4 mounting hol es on the rear cover .

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

2) Do not scr atch or press on the panel with any sharp objec ts.

3) Do not leave the module in high temper ature or in areas of high humidi ty for an extended per iod of time.

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

5) Avoid contact with water . I t may cause short c irc uit within the module.

6) Disc onnect the AC power when replaci ng the backl ight (C CFL) or inverter cir cuit . (Hi gh voltage occur s at the inver ter ci rcui t at 650Vrms)

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

8) Use care when handli ng the wir es or connectors of the inver ter ci rcui t. Damaging the wires may cause a short circuit.

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

10) Dur i ng the r epai r , D O NO T l eav e the Pow er On or Burn-in period for more than 1 hour w hil e the T V i s face dow n on a c l oth.

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 incorrectl y replaced. Replace only with the same or equivalent type.

2) Outer case broken battery shoul d 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 T est

(To protect elec tri c shock when custom er touch the ter minal .) Leakage curr ent can be measured by V: Voltmeter or oscilloscope (r.m.s. or peak reading) Stabilized pow er supply instrument and isol ated voltage transform er: Use too much curr ent c apacity and isol ated voltage tr ansformer does not need to use stabili zed power supply equipm ent. Specificati on of RM S volt meter: I nput res istanc e > 1 Mohm, I nput capacitance < 200 pF, Frequency range: 15 Hz – 1MH z . Refer Figure 1. Isolated ty pe volt -meter (F LUKE 8921A etc *1) *1 Not use FLUKE 8920A that c onnected to prot ectiv e eart h by diode

# Leakage current of measurement instrument is less than 10μArms when

under test equi pment AC plug is opened # Set up the following conditi on and tur n on the set. Applied v oltage: Nominal i nput volt age (Des cri ption on Nam eplate) # Measur e the leakage cur rent bet ween one phas e conduc tor and neutral for termi nal 1 and termi nal

2. Read rms value, and then calculate to peak value PEAK VALUE =√2 RMS VALUE Comply w ith the following requir ement Class II equipment (2-pin pl ug): for eac h termi nal, the w orst val ue of measurement m ust not exceed AC 283uA peak). Note: includi ng AC adaptor, AC adaptor/DC operated unit combi nation Note: Products which are always used in touch with human body: 141uA (peak) Note: As for products destined for Southeast Asia (Rod Antenna is accessory . Or it is packed with a pr oduc t.) , the worst value must not exceed AC 141uA (peak).

Figure 1 – Measuring network for Leakage Current

6

1-6. How to Find a Good Earth Ground

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

2) If the retaining scr ew is to be used as your earth ground, v erify that i t is at ground by measuri ng the resistanc e between i t and a c ol d-w ater pipe w ith an ohmmeter. The readi ng should be zer o ohms.

3) If a cold-water pipe is not accessi ble, connec t a 60- to 100-w att troublelight (not a neon lamp) between the hot side of the recept acle and the retaining scr ew. Tr y both slots, if necess ary, to locate the hot s ide on the line; the l am p shoul d l i ght at normal br il l i ance i f the sc r ew i s at gr ound pot enti al (see Figur e 3).

Figure 3. Checking for earth ground.

1-7. Lead Free Information

The circui t boards used i n these model s have been pr ocessed using Lead Free Solder. The boards ar e identified by the LF logo loc ated clos e to the board designation.

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

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

body of FFC.

The servic ing of these boar ds r equires special precautions. It is strongly recommended to use Lead Free Solder m ateri al in order to guarantee optim al

Figure 4: LF Logo

Figure 5: LF logo on circuit board

quality of new solder joi nts.

7

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

Insert pr operl y wit hout slanti ng

Press rel ease button at the sam e time pull out FFC cable

8

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

9

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

10

1-9. Solder-less tuner replacement procedure

① The insertion & extraction angle of the module is permitted to specified degree for connec tor

 For removing Tuner Module, In the case of small type Tuner module. After un screwed, Automatically the Module will float to co rrect degree. So please extract it with keeping this degree.

θ≒20°

Service manual operation (agreed by service member): Not using insertion jig. Due quantity not many as production. SC can control by:

1) Issue service manual for WW ASC.

2) Give training/lecture how to assemble tuner. Will be handle by SOEM service

Push down to screw.

20°

 Please c o nfirms whether no dust and no bend on

terminal of connecter(CN2800) and card-edge connecter

 Attachm e nt order of screw.

1. Side of antenna ter minal (W/BFX board).

2. Rear side of Tuner module.

1

2

11

1-9. Solder-less tuner replacement procedure (Cont. )

12

1-9. Solder-less tuner replacement procedure ( Cont. )

13

SECTION 2

SELF DIAGNOSTIC FUNCTION

The units in this ma nual conta i n a self-diagnostic function. If an error occurs, the Smart Co re Red LED will automatic ally begin t o flash. The number of times the LE D flashes t ra nslates to a pr obab l e sour c e of the p roblem. A definiti on of t he Smart Co re Red LE D fla s h indica t or s is list ed in t he ins truc ti on manu a l for the us er ’s knowled g e a nd r efer enc e. If an error symptom ca nnot b e r epr odu ced, the r emote c omman d er ca n be us ed t o review t he f a ilu r e occur rence da t a stored in memory to reveal past problems and how

often thes e p r ob lems oc cu r .

DIAGNOSTIC TEST INDICATORS

When an error occurs, the Smart Co re Red LED will f lash a set nu mber of ti mes to indi c ate the possi ble cause of the pr oblem. If ther e is more than one er ror , the LED will identify the f irst of the p roblem a reas . Result for all of the following diagnostic items are displayed on screen. If the scr een dis p la ys a “0”, no error has occu r r ed .

Smart Core RED

LED blinking count

2x

3x

4x

(KP/KPSP/KS

only )

5x

6x <G/P/B/LD> Backlight failure [BACKLIGHT]

7x

8x (KP/KPSP)

8x (KS)

Detection Items

<B/G/A/LD> Main 12V over voltage [MAIN_POWER]

Main 5.0V failure [DC_ALERT]

<B/S/K> Audio amp. protection [AUD_ERR]

<LD/P> LED driver failure/LED voltage protection [LD_ERR] <LD/P>Error detection of the I2C communication between the

Main device and the LD IC.[BCM_ERR]

<P/T/G/B> Panel ID EEPROM I2C No ACK (Also panel power

failure is a suspect) [P_ID_ERR]

Over temperature protection [TEMP_ERR] Temp. sensor I2C No ACK [TEMP_ERR]

4KBE Error (4KBE WDT) 4KPQ Error (4KPQ WDT)

Blue italic: detect at startup sequence only.

<G>: Power supply board, : Main board, <T>: T-con board, <LD>: LD board : Panel module, <S>: Speaker, <A>: Power Adapter, <Tu>: Tuner board, <K> : Audio board (KFW/KPSP only)

(if AC adapter model, it would power supply for Set),

14

Record Only

Item

TU_DEMOD

TCON ERR

(KP/KPSP/KS/KH only )

FRCTC_I2C

(KS/KH)

(KF/KFW/KFC)

Detection Items

<B/Tu> Tuner & Demodulator I2C communication failure Tuner board set detect signal monitoring

<T> T-CON device I2C communication failure

FRC device is not finished Initial sequence FRC device I2C communication failure <T/B> FRC device is not finished Initial sequence FRC device I2C communication failure

Blue italic: detect at startup sequence only.

<G>: Power supply board, : Main board, <T>: T-con board, <LD>: LD board

(if AC adapter model, it would power supply for Set),

: Panel module, <S>: Speaker, <A>: Power Adapter, <Tu>: Tuner board, <K> : Audio board (KFW/KPSP only)

AUD_ERR_I2C

(KP/KPSP/KS/KH only )

<B/K> Audio amp I2C communication failure

4KPQ_ERR_I2C

(KS/KH only)

4KPQ d e vice I 2C communicatio n failure

LED Pattern

When safety shutdown occurs, Standby LED display reports the cause by using the lightning patterns as indicated below.

0.5sec

Example: The figure above shows LED display when SHUTDOW N is caused by Audio Error. It repeats f lashing f or a specified number of times in 0.5s ec/cycl e and has a 3 seconds interval of lighting off. Please note th at a 3 sec onds int erv al of light ing off is fixed regar dl ess of abnor m al s tate typ es.

0.5sec

3.0sec 3.0sec

15

Entry (Self Diagnosis Display)

- Go to the standby by a remote.

- Push the buttons sequentially: <Display><5><Vol-><Power>

Exit

-If you want to finish service mode app, do AC OFF/ON →*Service mode app is disable perfectly

-if you want to move home menu, push <HOME>button →*Service mode app do background(not disable perfectly)

Format of error timestamps

YYMMDDhhmmss (in UTC) Example: 120823132523 -> Aug 23 2012 13:25:23 UTC * Only when time is set, an error timestamp is saved.

Smart Core Red LED blinking count

Error Item

SELF CHECK

Back

<< 002 MAIN POWER 000000000000 000000000000 000000000000 000 003 DC ALERT 000000000000 000000000000 000000000000 000 003 AUD ERR 150101000018 150101000018 150101000018 003 003 AUD ERR I2C 150101000123 150101000045 150101000045 003 003 TU DEMOD 150101000218 150101000223 150101000105 003 004 LD ERR 000000000000 000000000000 000000000000 000 004 BCM ERR 000000000000 000000000000 000000000000 000 005 TCON ERR 150101000504 000000000000 000000000000 001 005 P ID ERR 000000000000 000000000000 000000000000 000 006 BACKLIGHT ERR 000000000000 000000000000 000000000000 000 007 TEMP ERR 150101000200 150101000002 000000000000 002 008 4KBE ERR 000000000000 000000000000 000000000000 000

00005 00414 00002 [Home]Exit

Error timestamp for last recorded error

Error timestamp for second last recorded error

Error count

Error timestamp for 3rd last recorded error

Panel Operation Time clear

<7> -> <0>

Timestamps and Error Count clear <8> -> <0>

Tot al Operation Time and Boot Count clear

<9> -> <0>

Total Operation Time [hr] – Boot Count – Panel Operation Time [hr]

•Panel Operation Time is recorded every 30 min, but Tot al

Operation Time is recorded every 1 hr. Therefore, the panel op. time might become larger than the total op. time.

16

Triage C hart

Remote

Bluetooth

No White Po wer LED & does not

colored lines or

dots

One of

Smart Core

(Set is still

Bluetooth /

(OSR) can't















  

























 











Before you make t he service cal l…

1. Confirm the symptom from the customer.

2. Select that sympto m fro m the chart.

3. Bring a ll the b o a r d s and ca b les liste d for that symp to m.

4. Follow the troub lesho oting c harts in the technical guid es to isolate the boar d.

5. Chart

Color Code

RED DOT: Mo st likely defective pa r t

BLUE TRIANGLE: Secondary possible defective part

ABC BLACK TEXT: Board that may correct the symptom

Symptoms - Shutdown. Power LED

blinking red diagnostics sequences

Reference

2 3 4 5 6 7 8 9 10

B* Board

Power

reponse to

remote (Dead

Set)

No

Video

- mi ssing or distorted

Station

ary

video

Inputs

No

video

all

Inputs

No

Remote

Networ

k

Wireless

can't

connect

Audio

No

Audio

Smart

Core

no LED

alive)

GN3 KF segment

(BT)

One Step

Remote connect

G* Board

H* Board

K* Board

Speaker

Wifi & BT

Module

LD* Board

V By One

FFC

Tcon

LCD Panel

17

SECTION 3

TROUBLESHOOTING

KF/KFW 55” No Power(GL71 PS U board)

Switch Off plug(AC Off)

NO POWER

Check

Fuse F6101,

Open?

Open T V rear c ov er to check PS U Boar d Wait more than 5 minutes before start This is to ensure PSU is not in protection mode

PSU broken*

Yes

Replace PSU

Connector CN6401

Check

BL_ON

PIN 7

No Voltage

Main Board Pr oblem

AC Off AC ON

Connector CN6401

no

Check

STBY3.3V

PIN 5

Okay

Check

POWER_ON

PIN 9

Okay

Check

REG12V

PIN 13to18

Okay

No Voltage

PSU broken*

Replace PSU

Main Board Pr oblem

PSU broken*

Replace PSU

Okay

Check +Out2 and +Out3 at

CN6801

Okay

PSU OK

Connector

No Voltage

Output

Name

PSU broken* Replace PSU

Input/output

Voltage

CN6401 STBY3.3V 3.35~3.55V 5

CN6401

POWER_

ON

2.6~3.55V 9

CN6401 REG12V 12.2~13.2V 13~18

CN6401 BL_ON 2.6~3.55V 7

CN6801 +OUT2/3 85.5~125.3V 2~3

*If PSU board replaced, pl ease proceed with PSU standalone check

TV Business Division

18

GL71 Brok en PSU standalone checking

1. Appearance check

2. PS U info checking and confirmation

3. Broken parts checking

Note: PSU board C AN NOT be repair(unless requested by design) Any request to repair will be instruct.

TV Business Division

19

Appearance check

No Operation Tool Remarks

1 Check A-side appearance Glove Visual check

Keep record PC/Pen/Photo

2 Check B-side appearance Glove Visual check

Keep record PC/Pen/Photo

1 2

Criteria: No abnormality Exam ple: PWB crack/Burn mark

PWB crack

A-side

TV Business Division

B-side

Burn mark at AC inlet PIN(L~N)

20

PSU info checking and confirmation

No. Operation Tool Remarks

1 Check label marking Glove Visual check

Keep record PC/Pen/Photo

2 Record PN/SN/MFG Date Glove Visual check

Keep record PC/Pen/Photo

1

2

TV Business Division

PSU name PSU PN(Part Number)

PSU SN(Serial Number) MFG Date(Manufacturing date)

21

Broken parts checking

No. Parts Checking Criteria

1 F6101(Fuse) Resistance NG (high impedance) 2 C800A(main cap) Visual NG (vent) 3 BD1(Bridge di ode) Resistance NG (low impedance) 4 Q800A(PFC MOSFET) Resistance NG (low impedance) 5 D800A(PFC diode) Resistance NG (low impedance) 6 Q600(LLC MOSFET) Resistance NG (low impedance) 7 Q601(LLC MOSFET) Resistance NG (low impedance) 8 D120A(LLC Rectifier for 12V) Resistance NG (low impedance) 9 D120B(LLC Rectifier for 12V) Resistance NG (low impedance) 10 Q750A(LED boost MOSFET) Resistance NG (low impedance) 11 D751A(LED boost diode) Resistance NG (low impedance) 12 D 750(LLC Rectifier for LED) Resistance NG (low impedance) 13 D 751(LLC Rectifier for LED) Resistance NG (low impedance) 14 D 752(LLC Rectifier for LED) Resistance NG (low impedance) 15 D 753(LLC Rectifier for LED) Resistance NG (low impedance) 16 R915(Aux Fusible resistor) Resistance NG (high impedance) 17 D950A(Aux Rectifier diode) Resistance NG (low impedance) 18 Q 123( Tcon12V switch M O SFE T) Resistance NG (low impedance)

TV Business Division

22

Broken parts checking(parts location)

Q750A

BD1

F6101

C800A

D800A

R915

Q600

Q601

Q800A

D751A

D751

D750

D753

D752

Q123

D120A

D120B

D950A

23

Escalation Check sheet(Hardware)

Defect symptom Details

Does problem occur during first turn on?

Frequency of the symptom

Does the symptom recover by AC Off for more than 5 minutes?

Please describe the recover method

Please provide the humidity and temperature condition of the defect area/ Wheater During Problem Occur

Symptom occur for 1 particular set?

Able to duplicate the symptom in workshop

Other comment/Information Any LED blink indication

Are there any other equipment or devices broken together?

Is there any burn mark could be notice on the defective board?

Symptom occur on all input modes (HDMI, Video, Analogue RF, Digital RF)

Any other devices connected to TV set

If yes, please provide the device and brand

Yes: No:

Always: Intermittently:

(if any)

Yes: No:

Yes: ____times No:

Yes: No:

Temperature:

Yes: No:

Yes: ____parts No:

Yes: No:

____⁰C Humidity: ____H

(Specify)

TV Business Division

24

1.1 No power - LD board

START

LD board

1. Check fuse impedance

F1001

Is < 1ohm?

yes

2. Check impedance

D1001 to GND

Is > 1kohm?

yes

3. Check MOSFET

Q1007

Is > 1kohm?

yes

4. Check MOSFET

Q1002

Is > 1kohm?

yes

5. Check MOSFET

Q1008

no

Fuse F1001 broken

Diode D1001 broken

MOSFET Q1007 Broken

MOSFET Q1002 Broken

MOSFET Q1008 Broken

2

Q1007

4

1

F1001

D1001

3

Q1002

5

Is > 1kohm?

yes

Check B board

TV Business Division

Q1008

25

1.1 No power - LD board

12V DDCON check

START

Check fuse F1000

Is < 1ohm

yes

Check Input to GND

Is > 1k ohm?

yes

Check Input to Output

Is > 1k ohm?

yes

Check Output to GND

Is > 1k ohm?

yes

Check 12V

C1016 voltage

Is voltage <12V?

yes

Check EN POWER_ON

R1003 voltage

Is voltage >2.5V?

yes

Check Vcc

C1009 voltage

Is voltage >5.0V?

no

≥ 12V

Fuse F1000 broken

DDC IC1000 broken

Check B-Board

Troubleshooting flow 1.2

IC1000 broken

12V_TCON check

yes

Check 12.5V_TCON

Is voltage > 12.0V?

Check TCON_ON

Is voltage > 3.0V?

Check MOSFET

no

C1024

yes

no

Q1006

Is > 1kohm?

yes

12V power OK

Check other troubleshooting flow

END

Main device failure

Q1006 broken

yes

Check point on PWB refer next slide

26

1.1 No power - LD board

Input to GND

Impedance check

F1000

C102 4

+12.5V_TCO N

Q1006

Input to Output

Impedance check

TV Business Division

C1016

R1003

C1009

Impedance check

Output to GND

Impedance check

27

1.2 No Power u-com Failure

BFX Board

G-Board or LD

or IC409

+3.3V_STBY

POWER_ON

BL_ON

P-on u-com control signal path summary

#pin1

Vdd Ucom supply voltage

#pin18

IC401

#pin19

B-Board

#pin2

#pin12

#pin5

#pin10

#pin16

#pin11

#pin9

P-on u-com

#pin13

#pin14

OPWRSB

ORESETB

AC_OFF_INFO

PANEL_PWR_ON

X_SYSTEM_RST

P_ON_VBUS

PGOOD_1

P_ON_#1

P_ON_#2

SOC Muffin 2 (IC1000)

Tuner (CN2800)

DDC: +5.0V_VBUS (IC402)

DDC : +1.0V_M2 (IC604)

DDCs : +1.8V_TU (IC405)

DDCs : +5V_MAIN (IC404), +3.3V_MAIN (Q406/Q407)

LDOs: +1.05V_M2_A_1 (IC603),

+12V_REG

R430

R437

GND

#pin7

MAIN_VCC

ADC port

#pin3

#pin15

#pin8

+1.05V_M2_A_2 (IC606), VCC3IO_EMMC (IC2002)

DC_OFF_DET

DC_OFF_DET (IC400)

P_ON_LNB

+12V_LNB (Q408/Q409)

BL_MUTE

SOC Muffin 2 (IC1000)

28

1.2 No Power u-com Failure

START

Check VDD

C419 Voltage.

Is the voltage >3.0V?

yes

Check DC_OFF_DET

C504 Voltage.

Is the voltage >3.0V?

yes

Check OPWRSB

R441 Voltage.

Is the voltage 0V?

yes

no

BFX Board

Check +3.3V_STBY

C413, CN400 #24pin

Check DC_OFF_DET

IC400

SOC

Muffin 2

problem

Check MAIN_VCC

R437 Voltage.

Is the voltage >1.6V?

yes

Check P_ON_VBUS

P-on ucom #pin11

is >3.0V?

yes

Check P_ON_#1

P-on ucom #pin13

is >3.0V?

yes

no

Check +12V_MAIN Line

(G board, LD).

Change IC401

Check POWER_ON

P-on ucom #pin19

Is the voltage >3.0V?

yes

Check P_ON_LNB

P-on ucom #pin15

Is the voltage >3.0V?

yes

no

Try AC Off and On after few minutes.

If #pin19 keep Low, change IC401.

If #pin19 goes High few seconds and downs to Low,

Check +12V_MAIN Line (G board, LD).

Change IC401

Check PGOOD_1

R434 Voltage.

Is the voltage >3.0V?

Continue next page…

no

1.3 No POWER - DDCON/LDO

Check 1.0V DDCON (IC604)

29

1.2 No Power u-com Failure

BFX Board

Cont…

yes

Check P_ON_#2

P-on ucom #pin14

Is the voltage >3.0V?

yes

Check ORESETB

P-on ucom #pin12

Is the voltage >3.0V?

yes

no

Change IC401

no

Change IC401

Check X_SYSTEM_RST

P-on ucom #pin16

Is the voltage >3.0V?

yes

If BL_MUTE (R435) is 0V

Check BL_ON

P-on ucom #pin18

Is the voltage >3.0V?

yes

no

Change IC401

END

Ucom IC401 is working OK

30

1.2 No Power u-com Failure

BFX Board

DC_OFF_DET check

START

Check DC_OFF_DET

R420

Is voltage < 3V?

yes

Check Vdd

C418

Is voltage < 5V?

yes

END

IC400 is working OK

no

END

IC400 is working OK

no

Change IC400

31

1.2 No Power u-com Failure

P-on u-com & DC_OFF_DET Location

(IC401)

P_ON_U-

Com

(IC400)

DC_OFF_DET

32

1.2 No Power u-com Failure

P-on u-com & DC_OFF_DET Location

5. P_ON_LNB > 3.0V

4. POWER_ON > 3.0V

2. C504 > 3.0V

1. C419 > 3.0V

10. P_ON_#2 > 3.0V

IC401

8. P_ON_#1 >

3.0V

11. ORESETB > 3.0V

7. P_ON_VBUS > 3.0V

12.

X_SYSTEM_RS

T > 3.0V

13. BL_ON >

3.0V

3. R411 > 3.0V

6. R437 > 1.6V

9. R434 > 3.0V

33

1.2 No Power u-com Failure

DC_OFF_DET component location

1. R420 >

3.0V

2. C418 >

5.0V

IC400

34

1.3 No Po wer DDC ON/L DO

DC-DC Converter Reference Points

IC Ref Voltage supply

IC403 +3.3V_STBY C447 R467 IC601 +1.5V_DDR C609 C605 +5V_STBY - IC404 +5.0V_MAIN C456 R480 P-on ucom IC401 F402 IC402 +5.0V_VBUS C431 R455 P-on ucom IC401 F400 C428 IC604 +1.0V_M2 C629 R623 P-on ucom IC401 F600 C623 IC405 +1.8V_TU C464 IC405 #pin4 P-on ucom IC401 F403 -

Q407 3.3V_MAIN Q407 #pin2 Q407 #pin1 P-on ucom IC401 - -

Output

ref.

Enable pin Enable source Fuse

+19.5V_12.5V_MAIN

F401 C443

Vcc ref.

LDO Reference Points

IC Ref Voltage supply

Output

ref.

Enable Pin Enable source Fuse

VDD

ref.

IC602 +1.05V_M2_STBY C611 IC602 pin#3 +3.3V_STBY - C610 IC605 +1.05V_M2_ST_ET C631 IC605 pin#3 P-on ucom IC401 - C630 IC603 +1.05V_M2_A_1 C613 IC603 pin#3 P-on ucom IC401 - R612 IC606 +1.05V_M2_A_2 C633 IC606 pin#3 P-on ucom IC401 - R632

35

1.3 No Po wer DDC ON/L DO

DC-DC Converter Ov erall C heck

START

Check C447 Voltage.

Is the voltage 3.3V?

yes

Check C609 Voltage.

Is the voltage 1.5V?

yes

Check C456 Voltage.

Is the voltage 5V?

no

DDC: +3.3V_DDC_OUT check

DDC: +1.5V_DDR check

DDC: +5.0V_M AI N check

Check C629 Voltage.

Is the voltage 1V?

yes

Check C611,

C631, C613,

C633 is it

1.05V?

yes

Check C464 is it

1.8V?

yes

Check 3.3V_MAIN

C612 Voltage.

Is the voltage 3.3V?

no

DDC: +1.0V_M2 c heck

LDO: +1.05V_M 2_xx check

no

DDC: +1.8V_TU check

no

SW: +3.3V_MAIN check

no

yes

Check C431 Voltage.

Is the voltage 5V?

yes

no

DDC: +5V_VBUS check

yes

END

DDCON/LDO working normal

36

1.3 No Power DDCON/LDO

1.3 No Po wer DDC ON/L DO

DDC: +3.3V_DDC_OUT check

LD-Board model

Check input

F401 voltage

Is voltage >19.0V?

yes

START

Check fuse

F401

Is fuse OK?

yes

Check EN signal

R467 voltage

yes

no

yes

no

G-Board model

Check input

F401 voltage

Is voltage >12.0V?

no

Change F401

no

G-Board/LD-Board

Is voltage >2.5V?

yes

Check Vcc

C443 voltage

Is voltage >5.0V?

yes

END

no

Change IC403

KF/KFW 55”=G -Board model (PSU) KF/KFW 43”/49” =LD -Board model (ADP)

37

1.3 No Power DDCON/LDO

1.3 No Po wer DDC ON/L DO

DDC: +1.5V_DDR check

START

Check IC404Vcc voltage

Is voltage >12V?

Check Vcc voltage

Is voltage >4V?

no

Is IC600 mounted?

Check Enable

IC600 #pin1

C454

C602

yes

no

Check Vcc voltage

C602

Is voltage >3V?

yes

Check

D601

Is diode alive?

yes

Change IC600

no

Check

D600

Is diode alive?

yes

Change D601

Check +5V_MAIN DDCON (IC404)

no

Change D600

Check +3.3V_STBY.

G board or IC403

Is voltage >2.5V?

yes

Change DDCON

IC601

38

1.3 No P owe r DDCO N/LDO

DDC: +5V_MAIN check

START

Check fuse

F402

Is fuse OK?

yes

Check input

F402 voltage

Is voltage >12V?

yes

Check EN signal

R487 voltage

Is voltage >2.5V?

yes

Change IC405

no

Change F402

no

G-Board/LD-Board

no

1.2 N o Power U -Com Failure

39

1.3 No Po wer DDC ON/L DO

DDC: +5.0V_VBU S check

START

Check fuse

F400

Is fuse OK?

LD-Board model G-Board model

Check input

F400 voltage

Is voltage >19.0V?

yes

Check EN signal

R455 voltage

Is voltage >2.5V?

Check Vcc

C428 voltage

no

yes

Is voltage >12.0V?

yes

no

Check input

F400 voltage

no

1.2 N o Power U -Com Failure

no

Change F400

G-Board/LD-Board

Change IC402

Is voltage >5.0V?

yes

END

KF/KFW 55”=G -Board model (PSU) KF/KFW 43”/49” =LD -Board model (ADP)

40

1.3 No Po wer DDC ON/L DO

DDC: +1.0V_M2 check

START

LD-Board model

Check input

F600 voltage

Is voltage >19.0V?

yes

Check fuse

F600

Is fuse OK?

yes

Check EN signal

R623 voltage

Is voltage >2.5V?

Check Vcc

C623 voltage

no

yes

Is voltage >12.0V?

yes

no

Change F600

G-Board model

Check input

F600 voltage

no

G-Board/LD-Board

no

1.2 N o Power U -Com Failure

no

Change IC604

Is voltage >5.0V?

yes

END

KF/KFW 55”=G -Board model (PSU) KF/KFW 43”/49” =LD -Board model (ADP)

41

1.3 No Po wer DDC ON/L DO

LDO: +1.05V_M2_xx check

+1.05V_M2_STBY

START

yes

Check input

C610 voltage

Is voltage >3.0V?

yes

Check EN signal

IC602 #pin3

Is voltage >2.5V?

yes

Change IC602

no

DDC: 3.3V_DDC_OUT check

+1.05V_M2_STBY_ET

START

yes

Check input

C630 voltage

Is voltage >3.0V?

yes

Check EN signal

IC605 #pin3

Is voltage >2.5V?

yes

Change IC605

no

DDC: 3.3V_DDC_OUT check

1.2 N o Power U -Com Failure

42

1.3 No Po wer DDC ON/L DO

LDO: +1.05V_M2_xx check

+1.05V_M2_A_1

START

yes

Check input

C612 voltage

Is voltage >3.0V?

yes

Check EN signal

IC603 #pin3

Is voltage >2.5V?

yes

Change IC603

no

SW: 3.3V_MAIN check

1.2 N o Power U -Com Failure

+1.05V_M2_A_2

START

yes

Check input

C632 voltage

Is voltage >3.0V?

yes

Check EN signal

IC606 #pin3

Is voltage >2.5V?

yes

Change IC606

no

SW: 3.3V_MAIN check

no

1.2 N o Power U -Com Failure

43

1.3 No Po wer DDC ON/L DO

DDC: 1.8V_T U check

START

Check fuse

F403

Is fuse OK?

yes

Check input

F403 voltage

Is voltage >12.0V?

yes

Check EN signal

IC405 #pin4

Is voltage >2.5V?

yes

Change IC405

no

Change F403

no

G-Board/LD-Board

no

1.2 No P ower U -Com Failure

44

1.3 No Po wer DDC ON/L DO

SW: +3.3V_MAIN check

START

Check VG signal

Q407 #pin1

Is voltage > 3.0V?

yes

Check VB signal

Q406 #pin1

Is voltage > 3.0V?

no

1.2 N o Power U -Com Failure

no

yes

Change Q407

Change Q406

45

1.3 No Po wer DDC ON/L DO

DDC & LDO Locations

Q40 6Q4

07

IC40

3

IC40

4

IC60

4

IC60

3,

IC60

6

IC60

2

IC60

1

IC60

5

Q40

8

Q40

9

IC40

2

IC40

5

46

1.3 No Po wer DDC ON/L DO

DDC & LDO Locations

DDC:

+3.3V_DDC_OUT

C447

C443

IC403

DDC: +1.5V_DDR DDC: +5.0V_MAIN

C605

C456

F401

F402

IC601

IC404

C609

R480

R467

47

1.3 No P owe r DDCO N/LDO

DDC & LDO Locations

DDC: +5.0V_VBUS DDC: +1.0V_M2 DDC: +1.8V_TU

F400

C623

C464

C431

IC402

R455

C428

F401

IC604

C629

F403

IC405

#PIN4

48

1.3 No Po wer DDC ON/L DO

DDC & LDO Locations

DDC: +3.3V_MAIN DDC:

+1.05V_M2_STBY

#PIN2

IC602

Q407

#PIN1

(VG)

Q406

DDC:

+1.05V_M2_ST_ET

C631

C611

IC605

#PIN1

(VB)

#PIN3

C610

#PIN3 C630

49

1.3 No Po wer DDC ON/L DO

DDC & LDO Locations

DDC:

+1.05V_M2_A_1

#PIN3

IC606 IC603

C613

+1.05V_M2_A_2

DDC:

C612

C633 #PIN3

C632

50

1.4 NO POWER – Muffin2 Failure

Muffin2 Fail S uspec ted

Muffin2 LOG is

displayed

No

Power uCom and

DDCON/LDO OK?

Yes

Crystal X1000

Is there 24MHz?

Yes

Muffin reset released?

ORESETB=High

Yes

eMMC clock present?

Yes

No

Yes

Write DDR check

bootloader

Follow 1.2&1. 3

Replace cr ystal

Check uCom

Follow 1.2

Write DDR check

bootloader

Is there DD R error?

No

Check M uffin Log

related to eMMC

Is there “CRC error”

No

Store SW log, check SW

behaviors.

Is there DD R error?

Yes

Replace DDR

Yes

Replace eMMC

Yes

Replace DDR

No

Replace M uffin

No

eMMC

data corrupti on

51

1.4 NO POWER – Muffin2 Replacement

Muffin2

replacement

flow

Data on eMMC need to be

eMMC erase

Muffin2 replacement

SW write

erase first before changing Muffin

If cannot be erased, erase after replacing Muffin

52

2.0 LED Blinking: 2x (Main power Error)

BFX（G* Board model）

2-time blinking

Check “+12V_MAIN”

at pin 11/13 of CN400

on BFX Board,

Voltage > 13.2V ?

No

Yes

G* Board

BFX（AC adapter model）

2-time blinking

Check “+12V_MAIN”

at pin 11/13 of CN400

on BFX Board,

Voltage > 13.2V ?

No

Yes

LD Board

BFX Board

53

Check point for BFX

BFX (A side) Detail

CN400

+12V_MAIN

54

Detail of 3x LED Blinking

Error Item

Trinity2 DC_ALERT 3

AUD_ERR 3 Audio amp error detection

Trinity2 Board: BFX;

Number of STBY LED flashing

Description

Main board 5V power rail monitoring

55

2.1 LED Blinking: 3x (DC Alert Error)

BFX

3-time b linkin g

Check

+5.0V_VBUS at “C431”

4.959V<Voltage<5.285V?

NG

IC402,etc

(B* Board)

OK

Audio Error

56

Check point for BFX

Board PWB (A side) Detail

+5.0V_VBUS at “C431”

57

Detail of 3x LED Blinking

Error Item

Trinity2 DC_ALERT 3

AUD_ERR 3 Audio amp error detection

Trinity2 Board: BFX;

Number of STBY LED flashing

Description

Main board 5V power rail monitoring

58

2.2 LED Blinking: 3x (Audio Erro r)

LED 3x blinking

(Audio Error)

Power Off

Check

Power On

Check

Go to

3.3 Power off checking

Go to

3.4 Power on checking

KFW

KF

Replace B-K Harness

OK ?

No

Replace B-Boar d

and

K-Board (KFW only)

For BFX chassis: if with AC adapter,

G-Board refer to LD board

Yes

Finish

59

Check point for BFX

Name

BFX

B* board (A side)

(1) VCCP-GNDP short check Measure impedance between

VDD and GND at capacitor C3267.

If impedance is <100Ω → NG

(3) Fuse open check Measure impedance of fuse

F3201;

C3239 C3237

If fuse open → NG

F3201

C3267

60

Check point for BFX

Name

BFX

B* board (A side)

(2) +3.3V_Audio out short check Measure impedance between

C470 and GND.

If impedance is <100Ω → NG

Q407

Q406

+3.3V_Audi o

IC407

C470

61

Check point for BFX

Name

KK3

K* board (A side)

IC5501

F5500

F5501

C5524

(1) VCCP-GNDP short check Measure impedance between

VDD and GND at capacitor C5581 and C5524.

If impedance is <100Ω → NG

C5581

(3) Fuse open check Measure impedance of fuse

F5500 and F5501;

If fuse open → NG

IC5500

62

Check point for BFX

Name

KK3

K* board (A side)

(2) +3.3V_Audio out short check Measure impedance between C5586 and GND. If impedance is <100Ω → NG

C5586

63

2.4 LED BLINKING: 5x (Panel Communication Error)

BFX

5-times blinking

Check

“+12.5V_TCON”

on BFX

OK

Replace the Harness

Between G/LD* Board

and BFX

NG

Replace

NG

G/LD* Board

OK

Replace

Harness is

broken

V-By-One FFC

OK

G/LD*Board

broken

Change

BFX

BFX is

broken

OK

NG

Change

Panel (T-con)

OK

Panel (T-Con) is

broken

the V-By-One FFC

NG

G/LD* Board: G board or LD board

is broken

64

Check point for BFX

Name

BFX

B* board (A side)

+12.5V_TCON

65

2.5 6x Blinking backlight error

TV Business Division

Check point on PWB refer next slide

66

2.5 6x Blinking backlight error

TV Business Division

67

2.6 LED BLINKING: 7x (Temperature Error)

7-time blinking

Setting

circumstance is OK?

Temperature,

Ventilation, et c.

Yes

Change B* Board,

and A ging a few

hours

Symptom improvement

B* Board NG

No

NG

Set to another

location, etc.

Panel

Check I2C _C bus

communic ation OK?

(check the nex t page)

No

Yes

Temp sensor

I2C_C bus dumpi ng or

Muffin check

68

Check point for BFX

BFX board (A side)

KK3

Detail

I2C0_SDA

IC1200

I2C0_SCL

Temperature Sensor

69

3.0 No Sound

No Sound

Without LED 3x

AV receiver is connected

to HDMI in ?

No

Yes

Select [External Inputs]→

[BRAVIA Sync Settings]→

[BRAVIA Sync Control]→[off]

No sound only

Analog R F and Digital R F ?

No

No sound only HDMI ?

Yes

Go to

3.7 No Sound Tuner

Go to

3.8 No Sound HDMI

[Speakers] setting is

[Audio System] ?

No

Headphone is connected to

HP/Audio Out terminal ?

No

[Sound]→

[Headphone Speaker Link]

setting is [On] ?

No

Go to

3.3 Power Off Checking

Yes

Change the setting to

[TV Speakers]

Disconnect the Headphone

Change [Sound]→

Yes

[Headphone Speaker Link]

to [Off], OK ?

No

Replace B-Board

HP/Audio out terminal or Headphone detect GPIO may be broken

No

Go to

3.1 No Sound Audio

70

3.1 No Sound Audio

No Sound

Audio

Replace B-Board

And

K-Board*

Finish

*For KF segment: Only replace BFX board *For KFW s egment: Replace KK3 Board and BFX board

71

3.3 No Sound Power Off Check [KF/KFW]

Power Off Check

(1) B-Board*

PVDD-GND short ?

(See next p age)

No

(2) B-Board*

LDO out short ? (See next p age)

No

From 2.2

Yes

Replace B-Board*

Power Off Check

Measure the Speaker

impedance by multi-meter

Less than 3Ω or

open (broken) ?

Confirm the speaker

to the chassis ?

Return to 2.1 or 3.0

From 3.0

No

harness

Cut or shorted

No

Yes

Replace Speaker

Replace Speaker Harness

(3) B-Board*

Fuse broken ?

(See next p age)

No

Yes

Change Fuse

*For KFW: B-Board refer to K-Board

72

BFX-Board [ KF only]

(1) PVDD-GND short check Measure impedance between PVDD and GND at

capacitor C3262. If impedance is <100Ω → NG

(2) LDO out short check Measure impedance between +3.3V_Audio and GND

at C470. If impedance is <100Ω → NG

(3) Fuse open check Measure impedance of fuse

F3201 5A (12.5V or 19.5V) If fuse open → NG (Change Fuse)

F3201

Q407

IC3202

C3262

C3267

+3.3V_Audio

IC407

C470

73

KK3-Board [ KFW only]

F5501

(1) PVDD-GND short check Measure impedance between PVDD and GND at

capacitor C5581 and C5524. If impedance is <100Ω → NG

(2) LDO out short check Measure impedance between +3.3V_Audio and GND

at C5586. If impedance is <100Ω → NG

IC5501

C5586

C5581

(3) Fuse open check Measure impedance of fuse

F5500 and F5501 [5A] (12.5V or 19.5V) If fuse open → NG (Change Fuse)

F5500

C5524

IC5500

74

3.4 No Sound Power On Check [KF/KFW]

Power On Check

From 2.2

*POWER_AU is same as PVDD

(4) POWER _A U * check

POWER_AU is supplied to

B-Board* for a moment

before LED 3x blink i ng ?

Replace LD-Board**

No

OK ?

No

Yes

Return to 2.1

Finish

* For KFW, B-Board refer to KK3-Board **For BFX chassis: If non AC adapter model, LD-Board

refer to G board;

75

3.5 No Sound Audio HP/ Audio out

No Sound Audio

HP/Audio out

[Sound]→

[Headphone/Audio out]

is set to ?

[Audi o Out (Variable)]

[Headphone]

[Audi o Out (Fixed)]

Headphone Volume

is set to MIN?

Replace B-Board

Volume

is set to MIN?

Yes

No

Yes

No

Increase Headphone Volume

Replace B-Board

Increase Volume

Replace B-Board

[Subwoofer]

Set [Headphone/Audio Out]

to [Headphone] or [Audio Out]

76

3.6 [ Not Applicable ]

77

3.7 NO SOUND: @ TUNER

No Sound with normal picture

Only RF tuner input?

YES

NO

Check IC1000 (SOC)

Please refer Audio

troubleshooting

78

4.0 No Picture

No Picture

Got Any Normal

Display?

Yes

Check Other

Portion:

BL_ON (L or H): IC401 Pin #18 (BFX

board)

Check Smart Core

LED Indication

No

Troubleshooting manual

(5x Blinking)

Yes

Refer 5x Blinking

No

BL_ON：H

Check

BL_ON

on the main board

BL_ON：L

Refer to Backlight

Troubleshooting

Manual

Replace

the V by One FFC

Harness

OK

V by One FFC

Harness NG

NG

Replace

the main Board

Main board NG

OK

NG

Replace

LD/G Board

NG

LCD Panel

OK

LD/G Board NG

Ext. Video Input -

No Picture

HDMI - No Picture

Tuner - No Picture

(T-CON) NG

79

BL_ON (IC401: Pin #18)

Board Name

BFX

Board PWB A-side

IC401

Pin #18

80

4.1 : Video Analog Signal Path

VIDEO_DET

Video2/Component

(Rear)

SCART_FB/COMP_Y CVBS2P

SCART_SB/COMP_Y SCART_SG/COMP_PB

AT35:GPIO56

N35:SOY0

M35:CVBS2P M38:Y0P

L38:PB0P

M2

CR_DET

Video 1

(Rear Conversion

Jack)

SCART_SR/COMP_PR

CVBS3P

VIDEO2_DET

L37:PR0P

A16:SD_CLK

L36:CVBS3P

G16:GPIO66

IC1000

81

4.2 : No Picture ALL Des tination (BFX)(Conversion Jack)

Checking co ndition:

- TV ON & Video/CVB S/Compo site inp ut cab le is

No Picture

Video 1

No Picture

Check if input OSD

is GREY OUT

OK if it is highlighted

OK

NG

* Chec k J2601

Connection,

VIDEO2_DET

At R2631

NG (V: 0V)

OK (V: 3.3 V)

[All voltage measurement using Oscilloscope]

connected to Video/CVBS/Compo site source output.

- TV UI Display : Video 1

*  OK Condition : No solder splash can be seen

 NG Condition : Solder splash can be seen

**  OK Condition : No part short-circuited

 NG Condition : Part short-circuited

Check wave between

after C2628 and I C 1000

OK (Vpp: 1 V)

Muffin [IC 1000]

Problem

NG (Vpp: 0 V)

J2601 Connector

Problem

** Chec k condition of parts

[D2609/R2629/R2621/C2612

J2601 Connectivi ty

Problem

/R2643]

OK

NG

Parts Broken

82

4.21- Video Analog Signal Path - Checking Point

Board Name

BFX(A-Side) J2601 C2628 R2643

BFX(B-side) R2630 R2631 D2609 R2629 R2621 C2612

Board PWB (A side) Detail

Details

J2601

Details

C2628

R2631

R2643

D2609

R2630

R2629

C2612

R2621

83

4.3 : No Picture ALL Destination (BFX)(Component)

Checking co ndition:

- TV ON & Video/CVBS/Composit e/Component input

No Picture

Component

Video 2

No Picture

cable is connected to Video/CV BS/Composite/Comp onent source output.

- TV UI Display : Video 2/Component

Check if input OSD

is GREY OUT

OK if it is highlighted

Y : 1V

Pb : 0.7V

Chec k wa ve b etw e e n af t er

(Y:C2602/C2 627), (Pb:C2605),

(Pr:C2607)an d IC1000

Pr : 0.7V

Muffin [IC 1000]

OK

Problem

NG

* Check J2600 Connector,

CR_DET at R2650

OK (Vpp: 3.3 V)

Check VIDEO_DET signal

Path at R2627

NG

J2600 Connectivi ty

Problem

NG (Vpp: 0 V)

OK (Vpp: 3.3 V)

J2600 Connector

** Check condition of parts:

Y0P : [VD2602/D2601/R2606/

C2603/R2604]

PB0P : [VD2603/R2603/C2601/

PR0P : [VD2601/R2610/C2606/

S0Y : [R2642]

Problem

R2607]

R2611]

OK

NG

Parts Broken

Check if input OSD

is GREY OUT

OK if it is highlighted

OK

Check wave between

after C2611 and

IC1000

OK (Vpp: 1 V)

Muffin [IC 1000]

Problem

NG

NG (Vpp: 0 V)

* Check J2600

Connection, VIDEO_DET

J2600 Connector

At R2626

NG (Vpp: 0 V)

Problem

OK (Vpp: 3.3 V)

J2600 Connectivi ty

Problem

** Check condition of parts

[D2601/VD2602/R2606/

C2603/R2619]

OK

Parts Broken

NG

[All voltage measurement using Oscilloscope]

*  OK Condition : No solder splash can be seen

 NG Condition : Solder splash can be seen

**  OK Condition : No part short-circuited

 NG Condition : Part short-circuited

84

4.31- Video Analog Signal Path - Checking Point

Board Name

BFX(A-Side) J2600

C2602 C2605 C2607 C2627 VD2602 D2601 R2606 C2603 R2604 VD2603 R2603 C2601 R2607 VD2601 R2610 C2606 R2611 R2642 R2619 C2611

Board PWB (A side) Detail

Details

J2600

C2611

C2627

R2642

C2606

R2610

VD2601

R2619

R2631

C2603

R2606

C2602

R2630

VD2602

C2605

R2604

D2609

VD2602

C2607

R2611

R2607

R2629

C2612

VD2603

R2621

R2603 C2601

85

4.31- Video Analog Signal Path - Checking Point

Board Name

BFX(B-side) R2626 R2650 R2627 R2637

Board PWB (A side) Detail

Details

R2626

R2627

R2637

R2650

86

Condition Actions to b e taken

Muffin [IC 1000]

Problem

CN2600 Connecti vit y

Problem

J2601 Connector

Problem

J2600 Connectivi ty

Problem

Parts Broken

Refer to IC troubleshooting for further investigation

Change Connector

Change Part according to ** remarks

87

4.2/4.3 : Input Ski p function (BFX)

Input

Signal

Video 1 VIDEO2_DET

IC1000 G16-GPIO66

Video 2 / Component

VIDEO_DET IC1000 AT35-GPIO56

CR_DET IC1000 A16-SD_CLK

Non-Detect (Typical)

Video 2 / Component

0V

Detect (Typical)

3.3V

Video 1

(Rear Mini Jack)

Rear

88

4.4 NO PICTURE: @ TUNER

RF input no picture / noisy

picture

Check RF source cable

and antenna, OK?

OK

Check Tuner power line:

3.3V at JL2800 = 3.3V?, R2865?

1.8V at JL2801 = 1.8V? , FB2803? A_RESET value at JL2807 = 3.3V?

OK

All broadcasting channel

cannot be received?

NO

NG

YES

Change RF cable and antenna

NG

Check :

NG

R2865

FB2803

Check part mounting condition

for I2C SDA & SCL line (Refer Note I2C)

And

Check Tuner module connection (BFX)

Change

R2865

FB2803

NG

Please refer DDCON

troubleshooting

Change NG parts

connected to I2C bus

Refer to next page

OK

Notes: I2C line for all tuners except Japan_SKP

- Parts for I2C SDA line: R2800, C2803.

- Parts for I2C SCL line : R2801, C2804.

I2C line for Japan_SKP

- Parts for I2C SDA line: R2804

- Parts for I2C SCL line : R2805

89

4.4 NO PICTURE: @ TUNER

From Previous page

Digital

Analog

Refer Analog Tuning

Terrestrial/Cable

For TW, NA-

ATSC(MX/UC), JP_SKP(Opticast) and LA-ISDB-T

Refer Digital Tuning 1

Satellite

Check Tuner power line

12V at JL2822 = 12V?

OK

For AEP_W, JP_SKP, PA_T2, CH/HK, and LA-T2(COL)

Refer Digital Tuning 2

NG

12V LNB Voltage

Checking

90

4.4 NO PICTURE: @ TUNER (BFX)

BFX (Top View) For Tuner Power Lines

R2865

BFX (Back View) For Tuner Power Lines

FB280 3

91

4.4 NO PICTURE: @ TUNER (BFX)

BFX (Back View)

For Tuner Power Lines

JL2800 = 3.3V

JL2801 = 1.8V

JL2822 = 12V

JL2807 = 3.3V

92

4.4 NO PICTURE: @ TUNER (BFX)

BFX (Top View)

For Tuner I2C line

R2802

R2801

C2804

C2803

R2806

R2804 R2805

93

4.4 NO PICTURE: @ TUNER

FOR 12V LNB Voltage Checking: @ AEP_W and JP_SKP

12V LNB Voltage Checking

Check fuse F2800

NG

Change the fuse

OK

Check LNB power line

+12V_MAIN at R495 = 12V?

N G

AC adapter or G-board

G-board

Check harness between

B-Board and G-board

OK

AC adapter

NG

Check P_ON_LNB signal line

at R446 = 3.3V?

NG

Please refer

DDCON

troubleshooting

Harness broken

OK

MOSFET

Q408/Q409

broken

OK

Please refer G-board

troubleshooting

94

4.4 NO PICTURE: @ TUNER (BFX)

BFX (Top View) 12V LNB Voltage line

BFX (Back View) 12V LNB Voltage line

R446

Q408

R495

Q409

F2800

95

4.4 NO PICTURE: @ TUNER

FOR ANALOG TUNING: @ All destination except JP_SKP

For LA-ISDB(BR/AR), LA-T2(COL) and TW only

Analog Tuning

For Other destination

Confirm ANT or Cable connection A

Channel can be lock?

NG

Check part mounting condition

for analog control line

“IFOUT_N, IFOUT_P, IFAGC”

NG

OK

Check IC1000 (SoC)

OK

Change NG parts

NG

OK

Check IC1000 (SoC) &

Tuner module connection (BFX)

Notes:

- Parts for IFOUT_N line : FB2801, C2807, C2826

- Parts for IFOUT_P line : FB2802, C2808, C2825

- Parts for IFAGC line : R2838, C2827

: Insert correct signal in correct terminal.

A

96

4.4 NO PICTURE: @ TUNER

FOR DIGITAL TUNING 1: @ TW, NA-ATSC(MX/UC), JP_SKP(Opticast) and LA-ISDB-T.

Digital Tuning 1

Notes:

- Parts for IFOUT_N line : FB2801, C2807, C2826

- Parts for IFOUT_P line : FB2802, C2808, C2825

- Parts for IFAGC line : R2838, C2827

For TW/LA-ISDB-T

Confirm ANT or Cable connection

Check part mounting condition

“IFOUT_N, IFOUT_P, IFAGC”

For NA-

NG

A

Sound is normal?

for digital data line

ATSC(MX/UC)/JP_SKP(Opticast)

No sound

OK

: Insert correct signal in correct terminal.

A

Check IC1000 (SoC)

NG

Change NG parts

Check SoC(IC1000) and Tuner module

Check Tuner module connection (BFX)

97

4.4 NO PICTURE: @ TUNER (BFX)

BFX (Top View) IF & IFAGC line

R2838 C2827

C2825 C2826

C2808

C2807

FB2801

FB2802

98

4.4 NO PICTURE: @ TUNER

FOR DIGITAL TUNING 2: @ AEP_W, JP_SKP, PA_T2, CH/HK, and LA-T2(COL)

Digital Tuning 2

LA-T2(COL) For AEP-W For PA_T2 and

CH/HK

NG

Confirm ANT or Cable connection Confirm ANT or Satellite connection

OK

Digital cable/ Terrestrial

Cable

Refer to Digital Tuning 1

A A A

OK

Terrestrial

OK

Sound is normal?

No sound

Check IC1000 (SoC)

On Service

mode display

TS_LOCK ?

UEC ?

CASE A

CASE B

Change Tuner module

(Refer to Note tuner )

For JP_SKP

NG NG

Confirm ANT or Satellite connection

OK

All except SKP_Opticast

BS/CS or SKP_Opticast/

SKP_Premium or terrestrial

SKP_Opticast

Refer to Digital Tuning 1

Notes:

- Parts for TU1_TS_DATA0 line : R2847.

- Parts for TU1_TS_CLK line : R2844, R2815,R2866

- Parts for TU1_TS_VALID line : R2845.

- Parts for TU1_TS_SYNC line : R2846.

- CASE A : TS _LOCK = LOCK and UEC constant

- CASE B : TS _LOCK = UNLOCK or UEC is increasing

Check part mounting condition for digital data line

“TU1_TS_DATA0, TU1_TS_CLK,

TU1_TS_VALID, TU1_TS_SYNC”

NG

Change NG parts

OK

Check IC1000 (SoC)

Note (Only BM2 PWB)

(Tuner reference -- destination) TU2801 - PA-T2 TU2801 - LA-T2(COL) TU2801 - CH, HK TU2803 - AEP_W TU2802 - JP_SKP

: Insert correct signal in correct terminal.

A

99

4.4 NO PICTURE: @ TUNER (BFX)

BFX (Top View) TS1 line

R2815

R2845

R2847

R2844

R2846

100