Sony KD-43X7500F Schematic

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HISTORY INFORMATION FOR THE FOLLOWING MANUAL:

SERVICE MANUAL (COMMON)

GN4UN CHASSIS

ORIGINAL M ANUA L ISSUE DATE: 4/2018

Version Date Subject

1 4/2018 1st Issue

Segment : CHL

LCD TV

9-888-752-01

For SM - Unique , plea s e ref er :

9-888-752-Ax ( America )

9-888-752-Ex ( Europe )

9-888-752-Px (Asia)

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SERVICE MANUAL (COMMON)

GN4UN CHASSIS

Segment : CHL

LCD TV

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MODEL LIST

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

REGION ASIA AMERICA EUROPE

MODEL

KD-43X7*F

KD-43XF7*

KD-49X7*F

KD-49XF7*

KD-55X7*F

KD-55XF7*

KD-65X7*F

KD-65XF7*

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4. SERVICE ADJUSTMENTS

5. DIAGRAMS

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Section Title Page

1. SAFETY NOTES 5

2. SELF DIAGNOSTIC FUNCTION 12

3. TROUBLE SH OOTING 14

138

TABLE OF CONTE NTS

115

Please refer Service Manual – Unique for below information :

-Dissassy and Removal Caution

-Wire Dressing

-Circuit Board Location

-Exploded Views and Parts List

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

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1-1. Warnings and Caution

1) CAUTION :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) WARNING!! : 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.

SECTION 1

SAFETY NOTES

Whenever a TV Main board is replaced, the correct TV Model and Serial number must be reinserted into m emor y.

This is a MANDATOR Y procedure that each ser vic e center must appl y. Please refer to t he chapter of A DJUS TM ENT in this service manual to

find out how to set the model number and s erial number in serv ice mode.

1-2-1. Caution Handling of LCD Panel

The replaceable fuse could be in the neutral of the mai ns supply. When replacing the fuse, t he mains shal l be disconnected for de-energi ze the phase conductors.

(*Except AC ADAPTOR , Because i t does not carr y out replacing an i nternal fuse.)

4) CARRYING THE TV : 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) SAFETY-RELATED COMPONENT WARNING!! : 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 this manual. Follow these procedures whenever critical components are replaced or improper operation is suspected.

6) IMPORTANT REMINDER FOR TV MAINBOARD REPLACEMENT : It is mandatory for s ervi ce center s to confirm the TV‘ s system inform ation after each repair carr ied out w ith Mainboard replacement.

operation are identified in

When r epair ing the LCD Panel, make sure you are grounded w ith a wrist band. When r epair ing the LCD Panel on the wall, the panel must be secured using the 4 mounting holes on the rear cover .

1) Do not pr ess the panel or frame edge to avoid the ri sk of electri c shock.

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

3) Do not leave the module i n high temperatur e or in areas of high humidity for an extended peri od of time.

4) Do not expose the LC D panel to direct sunl ight.

5) Avoid c ontact wit h water. I t may cause short cir cuit within the module.

6) Disconnect the AC power when replacing t he backli ght ( CC FL) or inverter c irc uit. ( High voltage oc curs at the inv erter cir cuit at 650Vrms)

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

8) Use care when handling t he wir es or connectors of the inver ter ci rcui t. Damaging the wi res may cause a short cir cuit .

9) Protect the panel from ESD to avoid damagi ng the el ectroni c circuit (C-MOS).

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10) During the repair, D O NOT leave the Power On or Burn-in peri od for more than 1 hour while the TV is face down on a cloth. Refer Figure 1 .

Figure 1.

1-2-2. Caution for OLED Panel

1) Handling

When repai r i ng the TV set, be sur e y ou ar e gr ounded by usi ng a w r is t band.

*Do not press on the panel or frame edge to avoid the ri sk of electric shock. *Do not scratch or press on the panel wi th any sharp objects. *Do not leave the module in high tem peratur es or in areas of high humidi ty

for an extended per iod of tim e. *Do not expose the panel to dir ect sunli ght. *Avoid contact wi th water. I t may cause a short cir cuit wit hin the module. *Disconnec t the AC power when replacing. *Always clean the panel wi th a soft cloth material . *Use care when handling the wi res or connectors. D amagi ng the wir es may

cause a short. *Protect the panel from ES D to avoid damaging the elect ronic cir cuit.

*Do not recommend power-on i n the conditions w hi ch l ai d face down the panel, in repair acti vity. Refer F i gur e 1 . *When transpor ting by hand, do not put stress on the panel and the frame around the screen. Refer to the panel handli ng chapter of each Ser vice manual , or the "Transpor ting" inform ation of the Referenc e Guide of eac h model for how to hold i t.

2) OLED Screen

•Although the O LED scr een is made with high-preci sion technology and

99.99% or m or e of the pix els ar e effect i ve, blac k dots may appear or br i ght points of light (white, red, bl ue, or green) m ay appear c onstantly on the OLED screen. T his is a structural property of the OLED s creen and i s not a malfunction.

•Do not push or scratch the front filt er, or place obj ects on top of thi s TV set. The i m age m ay be unev en or the OLE D screen m ay be damaged.

•The screen and cabinet get w arm when this TV set is in use. This is not a malfunction.

3) Precautio n s t o P ro t ect th e Scr een from Damage

Image retention

OLED TV’s ar e s usc epti bl e to image retention (bur n-i n) due to the characteri stic s of the mat erial s used. I mage r etention may occur if images are displayed in the same locati on on the screen repeatedl y or over extended per iods of tim e. Thi s is not a malfunction of the TV. Avoi d displaying images that may caus e i m age r etenti on.

The fol lowing are examples o f images that may cause i mage retention:

•Content w ith black bars either on the top and bottom and/or the left and right sides of the scr een. ( for exampl e, Letterbo xed , 4:3 sc reen, Standar d definition)

•Static im ages such as photos.

•Video games that might hav e static content in some part of the scr een.

•On-screen menus, pr ogram guides, channel l ogos et c.

•Static content from appl ications.

•On-screen ti ckers , such as those used for new s and headlines.

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To reduce the risk of image retention:

•Fill the screen by changing [Wide mode] to elim inate the bl ack bars. Select [Wide mode] other than [Nor mal] .

•Turn off the OSD (On Sc r een Displ ay ) by press i ng the DISPLAY button, and turn off the menus from connected equipment. For detail s, refer to the instruct ion m anuals for the c onnected equi pment.

•Avoid displ ay i ng st ati c i m ages w it h br ight colours (includi ng w hi te) , clocks or l ogos on any por ti on of the s c reen.

•Set the pictur e settings based on the ambi ent c onditions . T he Standard Picture is recommended for hom e use and when viewi ng content that often displ ays the station logos , etc. The TV has following features to hel p reduce/ pr event image r etention. Press the HOME button, then select [Settings] – [Picture & Display] – [Expert panel settings ] – the desir ed option.

Panel ref res h

Panel refresh wil l automatically run to adjust the uniformi ty of the TV screen after i t has been in use for long periods of tim e. Panel refresh can also be performed manual ly and s hould only be used if image retenti on i s very noti c eable or y ou see t he follow i ng m es sage: [Panel refresh did not finish...]

Caution:

•The Panel refresh function may affect the panel. As a reference, perfor m the Panel refresh only once a year, do not per form it more than once a year as it may affect the usable l ife of the panel.

•Panel refresh takes about one hour t o complete.

•A white line may be displayed on the scr een duri ng the Panel refresh, this is not a malfunction of the TV.

•Panel refresh wil l only work when the room temper ature i s between 10 ºC and 40 ºC.

Pixel shift

Automatical ly moves the image on the screen to pr event i mage retent ion.

Other feature

The screen brightnes s i s automatic ally reduced when dis playi ng stil l images, cl ocks, bri ght colours or l ogos etc .

IMPORTANT REMINDER FOR OLED PANEL REPLA C EMENT When c arry ing out OLED panel r eplacem ent, i t is mandatory of a service c enter to confirm and r ec or d Panel ON tim e & Panel Refresh times. It is because t hey ar e i ndi s pensabl e informati on i n or der to c l ar ify responsibi lity for image retenti on after panel replacement. Please refer to the chapter of SELF DI AGNOSI S FUN CTI ON in this service manual to find out how to confirm the Panel ON time & Panel Refresh times in ser v i ce m ode.

1-3. Caution About the Lithium Battery

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

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

1-4. Safety Ch eck-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.

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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

(To protect electr ic shock w hen customer touch t he termi nal.) Leakage current c an be measured by V: Voltmeter or oscillosc ope (r.m.s. or peak reading)

Stabilized pow er suppl y instr ument and isol ated voltage trans forme r: Use too much current capaci ty and is olated vol tage trans former does not need to use stabilized pow er suppl y equipment. Specificati on of RM S volt meter: Input r esis tance > 1 Mohm, Input capacitance < 200 pF , F r equency range: 15 Hz – 1M Hz . Refer Figure 2. Isolated ty pe volt -meter (FLUKE 8921A etc *1) *1 Not use FLUKE 8920A that connected t o protecti ve earth by diode

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

under test equipm ent AC plug is opened # Set up the following condition and turn on the set. Appl ied vol tage: Nominal input v oltage (D escr iption on N amepl ate) # Measure the leakage current between one phase conductor and neutral for terminal A and terminal B. Read rms value, and then calculate to peak value PEAK VALUE =√2 RMS VALUE

Comply with the following requirement Class II equipment (2-pin plug) : for each term inal , the wor st value of measurement must not exceed AC 350uA peak). Note: including AC adaptor, AC adaptor/DC oper ated unit combinati on

Figure 2 – Measuring network for Leakage Current

1-6. How to Find a Good Earth Ground

1) A cold-w ater pipe is a guaranteed earth gr ound; the cov er-plate retaining sc rew on most AC outlet boxes is also at earth ground.

2) If the r etai ni ng screw is t o be used as your ear th gr ound, v er i fy that i t i s at ground by m eas ur ing the r esi st ance between i t and a cold-water pipe with an ohmmeter. The readi ng should be z ero ohms.

3) If a cold-w ater pi pe is not accessibl e, connect a 60- to 100-wat t troublelight (not a neon lamp) between the hot si de of the receptacl e and the retaining sc rew. Try both slots, i f necessary , to locat e the hot side on the line; the l am p s hould light at nor m al br i ll i anc e if the sc r ew i s at gr ound potential (s ee Figure 3).

Figure 3. Checking for earth ground.

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1-7. Lead Free Information

The circui t boar ds us ed i n thes e models have been proc ess ed using Lead Free Solder. The boards ar e identified by the LF logo located close to the board designat ion.

The servicing of these boards requir es speci al precauti ons. I t is strongly r ecomm ended to use Lead Free Sol der mater ial i n order to

Figure 4: LF Logo

Figure 5: LF logo on circuit board

guarantee optimal qualit y of new solder j oints.

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1-8. FFC Handling Caution

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1-9. Solder-less Tuner Replacement

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The units i n t his m anual cont ain a self-diagno sti c function. If an error oc cur s , the Smart C or e R ed LED w i ll automatical l y begin to flash. The number of times the LED flashes tr anslates to a probable sour ce of the problem . A definition of the Smar t Core Red LED flash indi cators is listed in the instr uction manual for the user’ s knowledge and reference. If an error symptom cannot be reproduc ed, the rem ote com mander can be used to review the failure oc curr ence data stored i n memory to reveal past problems and how often these problems occur .

DIAGNOSTIC TEST INDICATORS When an error occurs , the Smar t Cor e Red LED will flash a set number of times to indi cate the possi ble cause of the pr oblem. If there is more than one err or, the LED wil l identify the first of the problem areas. Result for all of the following diagnosti c item s are displ ayed on screen. If the scr een di s play s a “0”, no er r or has occ ur r ed .

SECTION 2

SELF DIAGNOSTIC FUNCTION

Status

LED Colour

Remarks

LED Indicator

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

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

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

• Flashes while the remote is being operated.

Amber = Red + Green

Power Off

( AC Off and *1)

Power On

Standby

( by remote control off and Side Key off)

Picture Off

Set "Sleep Timer"

Set "On Timer" ( Power On )

Set "On Timer" ( Standby )

Picture Frame

Failure

Error of panel ID

Software Updating

Software Updating failure

OFF

White

OFF

White

Amber

Red Blinking

Amber / Green Blinking

Amber Blinking

Amber / Red Blinking

*1 power switch off (by Side Key)

The number of LED blinking indicates cause of failure.

Blinking:0.5sec Amber/

0.5sec Green

Blinking: 1sec On / 1sec Off

Blinking:1 sec Amber/ 1sec Red

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Failure LED Display

The Number of Standby LED

(RED blinking)

2 Main Power Error

3 Audio Error Main Board

4 Panel Power Error Main Board

5 Panel I2C Communication Error Main Board or Source Board

6 Backlight Error Main Board

Error Detection Error Location

AC Adaptor or Power Supply Unit

Tuner Demod Error do not go to Safety Shutdown and do not have RED blinking.

Error Detection Symptoms Error Location

Tuner Demod Error Cannot tune Digital RF/ Analog RF Main Board/Tuner Module

SYSSET

Before you make the service call…

1. Confirm the symptom from the customer.

2. Select that symptom from the chart.

3. Bring all the boards and cables listed for that symptom .

4. Follow the troubleshooti n g charts in the technical guides to isolate the board.

5. Chart

RED

BLUE

BLACK

No White Power LED & does not

Stationary

dots

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Triage Char t

Colour Code

DOT: Most likely defective part

TRIANGLE: Secondary possible defective part

TEXT: Board that may correct the symptom

SECTION 3

TROUBLESHOOTING

Symptoms - Shutdown. Power LED

blinking red diagnostics sequences

Power

Reference

2 3 4 5 6



B* Board

G* Board

H* Board

Speaker

Wifi Module

LD* Board

VBO FFC

Tcon/Source

Board

LCD Panel

Problem









Power Power

Audio

    







Panel

(Communication)

 





Panel

(Backlight)

reponse to

remote (Dead

Set)



- missin g or distorte d

colored lines o r





Video

No video

One of Inputs

No video

all Inputs

 

Remote Network Audio Smart Core

No Remot e

 





Wireless

can't connect



No Audio







Smart Core no LED

(Se t is still a liv e)





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3.1 No power - LD board

START

LD board

1. Check fuse imped a n ce

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

Is > 1kohm?

Fuse F1001 broken

Diode D1001 broken

MOSFET Q 1007 Brok en

MOSFET Q 1002 Brok en

MOSFET Q 1008 Brok en

Q1007

F1001

D1001

Q1002

Q1008

yes

Check B board

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3.1 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?

yes

≥ 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_O N

C1024

Is voltage > 3.0V?

yes

Check MOSFET

Q1006

Is > 1kohm?

yes

12V power OK

Check other troubleshooting flow

END

Main device failure

Q1006 broken

Check point on PWB refer next slide

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3.1 No power - LD board

Input t o G N D

Impedance check

C1024

+12.5V_TCON

Input t o O ut put

Impedance check

C1016

F1000

R1003

C1009

Q1006

Impedance check

Output to GND

Impedance check

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3.2 LED Blink ing: 2x (Main power E rror - Operating Chart )

BB9（G* Board mode l） BB9（AC adapter model）

23V

13.2V

12.2V

16.44V

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3.2 LED Blink ing: 2x (Main power E rror)

BB9（G* Board model）

2-time blinking

Check “+19.5_12.5V_MAIN”

at pin 15/16 of CN 5500

on BB9 Board,

Voltage 12.2V -13.2V?

*Typical 12.7V*

Yes

G* Board

BB9（AC adapter model）

2-time blinking

Check “+19.5_12.5V_MAIN”

at pin 15/16 of CN 5500

on BB9 Board,

Voltage 16.44V – 23V ?

*Typical 19.5V*

Yes

LD Board

BB9 Board

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3.2 : 2x Blinking – Main Power Error

LD Board

2 times

Blinking

LD-Board

Check DC voltage at

Q1002

18V – 20V?

*Typical: 19.5V

Yes

Change LD-

board

Adaptor

Take out adaptor

and check the output voltage.

18V – 20V?

(Refer Figure 1)

*Typical: 19.5V

Yes

Change LD-

Board

Change

Adaptor

-ve

+ve

Ensure that +ve

probe is touching

the needle.

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

TV Business Division

(Supplementary

information)

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Check point LD1

Board Name

LD1 (Q1002)

Board PWB (A side) Detail

Q1002

19.5V

(Supplementary

information)

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3.3 : 3x Blinking – Audio Error

B Board

B-board Audio Error pin short to GND

No connectivity of F3101

F3101 broken, Replace F3101

3x blinking & F3101 OK

START

3x blinking

Check correct Option bit is set?

Correct Option bit & 3x blinking

Disconnect pow er supply

and check Aud i o E rror p i n

Audio Error pin no short to GND

Remove Speaker Connecto r

at CN3109 and

perform AC OF F - ON

3x blinking

Check connecti vit y

of F3101

3x blinking & F3101 OK

Wrong Option bit

3x blinking

No 3x blinking

3x blinking

Important Note : TV must be power OFF condition before plug or unplug any of the FFC/FPC/wire/cable from the board. -> This is to prev en t possib ili ty c ir cu it damage happen.

Set correct Option bit and

perform AC OF F - ON

Check Speaker harnes s and

Speaker impedance

Speaker harness shorted

Change Speaker

Harness

No 3x blinking

Main Speaker Impedance ≠ 6~8 Ω

Change Main

Speaker

No 3x blinking

#Audio IC (IC3101) problem

Change B-board

DONE

Connect back

Speaker Connector

to CN3109 and

perform AC OF F - ON

No 3x blinking

(Supplementary

information)

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3.3 : 3x Blinking – Audio Error

B Board

(#Audio I C (I C 3 101) problem)

START

#Audio IC (IC3101) problem

3x blinking and F3101 OK

Check Audio IC pins and surrounding part,

Replace the NG part if have any

(For example, fuse broken, e.capacitor blow,

c.capacitor short connection,

inductor open connection and etc.)

3x blinking

Check have any burn mark on Audio IC,

If have burn mark, replace the NG Audio IC

Important Note : TV must be power OFF condition before plug or unplug any of the FFC/FPC/wire/cable from the board. -> This is to prev en t possib ili ty c ir cu it damage happen.

No 3x blinking

3x blinking

Change B-board

DONE

(Supplementary

information)

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3.3 : 3x Blinking – Audio Error

B Board (Checking Point)

Board PWB

(A side)

Purpose : Checking Audio Error pin not short to GND

Checking fuse condition

Change Audio IC if need

Audio IC each pin checking, please refer to “Audio No Sound”

BB9 (CHL) - Audio A mp circuit

F3101

IC3101

CN3109

Audio Erro r pi n

(Supplementary

information)

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3.3 : 3x Blinking – Audio Error (Back up)

B Board (Checking Point)

Board PWB

(A side)

BB9 (CHL)

Main IC

(IC5000)

Audio Amp

circuit

(Supplementary

information)

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3.4 : 4x Blinking – Panel Power Error

BB9 Board

Yes

Start

*Check Adaptor /

G board connection

TV boot up normally?

Check voltag e at

+12.5V_TCON

10.8V-13.2V

RC ON

Yes

TV in standby mode?

Check PANE L_PWR

3.00V-3.33V?

*Check Adaptor / G-board connection

CHL 43/49 = LD board & Adaptor CHL 55/65 = G-board Adaptor: Remove and reinsert Harness from LD board  Main board G-board: Remove and reinsert Harness from Gboard  Main board

Replace Main IC / B-Board

Yes

Check +12.5V_TCON

10.8V-13.2V?

Suspected LD board / G

Board side issue.

Replace PSU uni t board

Yes

End

(Supplementary

information)

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BB9 layout

30pin PSU/LD

Connector

51pin LVDS C onnec tor

SoC

+12.5V_TCON

TV Business Division

PANEL_PWR

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3.5 : 5x Blinking – P anel I2C Error

START

Reinsert LVDS 51pin Flat Flexible Cable (FFC) at B-Boar d and Panel Side. Make sur e F FC is t aped

properly.

5 Times Blinking happen?

YES

Replace LV DS 51 pin Flat Flexible

Cabl e (FFC )

5 Times Blinking happen?

YES

TV set is OK now

NG Symptom:

Incorrect FFC Ins ertion

TV set is OK now

NG Symptom:

LVDS Cable NG

Is 10.8 – 13. 2V available?

YES

Replace B-Board

5 Times Blinking happen?

YES

Replace

O-Cell* or Panel M odule*

TV Boots Up Normally

END

TV set is OK now

NG sympton:

LD board/ G board

no +12.5V_TCON supply

TV set is OK now

NG Symptom:

B-Board Is su e NG

* O-Cell or Panel Module replacement depends on ser v ice capabilities

Check voltage at +12.5V_T CO N

SYSSET

2018/05/0404:12:02(GMT+09:00)

BB9 layout

30pin PSU/LD

Connector

51pin LVDS C onnec tor

SoC

+12.5V_TCON

SYSSET

2018/05/0404:12:02(GMT+09:00)

3.6 6x Blinki ng back l ight error

Check point on PWB refer next slide

SYSSET

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