Sony KDL-55HX755 Schematic

HISTORY INFORMATION FOR THE FOLLOWING MANUAL:

SERVICE MANUAL

ORIGINAL MANUAL ISSUE DATE: 2/2012

Version Date Subject

1.0 2/2012 Original manual issue.

2.0 3/2012 Added Russia destination and changed part numbers.(P133, 134, 140 and 141)

3.0 4/2012 Added part number of BAPS SERVICE COMPLE for Russia destination.(P.134, P, 136, P138)

LCD Digital Color TV

AZ3F CHASSIS

Segment: 3a

9-888-472-03

SERVICE MANUAL

LCD Digital Color TV

AZ3F CHASSIS

Segment: 3a

9-888-472-03

MODEL LIST

MODEL COLOR COMMANDER DEST.

KDL-32HX750 Black RM-ED047 AEP KDL-32HX751 Black RM-ED047 AEP KDL-32HX753 Black RM-ED047 AEP/UK/RU KDL-32HX755 Black RM-ED047 AEP/IT KDL-32HX757 Black RM-ED047 AEP KDL-32HX758 Black RM-ED047 AEP KDL-32HX759 Black RM-ED047 AEP

KDL-40HX750 Black RM-ED047 AEP KDL-40HX751 Black RM-ED047 AEP KDL-40HX753 Black RM-ED047 AEP/UK/RU KDL-40HX755 Black RM-ED047 AEP/IT/NOR KDL-40HX756 Black RM-ED047 AEP KDL-40HX757 Black RM-ED047 AEP KDL-40HX758 Black RM-ED047 AEP KDL-40HX759 Black RM-ED047 AEP KDL-40HX75G Black RM-ED047 NOR

MODEL COLOR COMMANDER DEST.

KDL-46HX750 Black RM-ED047 AEP KDL-46HX751 Black RM-ED047 AEP KDL-46HX753 Black RM-ED047 AEP/UK/RU KDL-46HX755 Black RM-ED047 AEP/IT/NOR KDL-46HX756 Black RM-ED047 AEP KDL-46HX757 Black RM-ED047 AEP KDL-46HX758 Black RM-ED047 AEP KDL-46HX759 Black RM-ED047 AEP KDL-46HX75G Black RM-ED047 NOR

KDL-55HX750 Black RM-ED047 AEP KDL-55HX751 Black RM-ED047 AEP KDL-55HX753 Black RM-ED047 AEP/UK

KDL-55HX755 Black RM-ED047 AEP/IT/NOR KDL-55HX75G Black RM-ED047 NOR

KDL-32/40/46/55HX750,751,753,755,756,757,758,759,75G(AEP/UK/IT/NOR)

*1 Serial number range 5,500,001 ~ 5,600,000 are B2B models Its commercial name is FWD-55HX750P

WARNINGS AND CAUTIONS -ENGLISH

CAUTION

These servicing instructions are for use by qualified service personnel only. To reduce the risk of electric shock, do not perf orm any servicing other than that contained in the operating instructions unless you are qualified to do so.

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.

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.

SAFETY-RELATED COMPONENT WARNING!!

Components identified by shading and ! mark on the schematic diagrams, 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.

KDL-32/40/46/55HX750,751,753,755,756,757,758,759,75G(AEP/UK/IT/NOR)

WARNINGS AND CAUTIONS -FRENCH

ATTENTION!!

Ces instructions de service sont à l’usage du personnel de service qualifi é seulement. Pour prévenir le risque de choc électrique, ne pas faire l’entretien autre que celui contenu dans le Mode d’emploi à moins que vous soyez qualifi é faire ainsi.

WARNING!!

Afi n d’eviter tout risque d’electrocution provenant d’un chássis sous tension, un transformateur d’isolement doit etre utilisé lors de tout dépannage. Le chássis de ce récepteur est directement raccordé à l’alimentation du secteur.

POUR TRANSPORTER LE TÉLÉVISEUR

Tenez compte de ce qui suit pendant l’installation du téléviseur :

• Débranchez tous les câbles avant de transporter le téléviseur.

• Transportez le téléviseur avec le nombre de personnes approprié ; un téléviseur de grande taille doit être transporté par au moins deux personnes.

• Lors du transport du téléviseur, l’emplacement des mains est très important pour votre sécurité, ainsi que pour éviter de causer des dommages.

ALERTE!!

Afi n d’eviter tout risque d’electrocution provenant d’un chassis sous tension, un transformateur d’isolement doit etre utilise lors de tout depannage. Le chassis de ce recepteur est directement raccorde a l’alimentation du secteur.

ATTENTION AUX COMPOSANTS RELATIFS A LA SECURITE!!

Les composants identifi es par une trame et par une marque ! sur les schemas de principe, les vues explosees et les listes de pieces sont d’une importance critique pour la securite du fonctionnement. Ne les remplacer que par des composants Sony dont le numero de piece est indique dans le present manuel ou dans des supplements publies par Sony. Les reglages de circuit dont l’importance est critique pour la securite du fonctionnement sont identifi es dans le present manuel. Suivre ces procedures lors de chaque remplacement de composants critiques, ou lorsqu’un mauvais fonctionnement suspecte.

KDL-32/40/46/55HX750,751,753,755,756,757,758,759,75G(AEP/UK/IT/NOR)

USE CAUTION WHEN HANDLING THE LCD PANEL

When repairing the LCD panel, be sure you are grounded by using a wrist band. When repairing the LCD panel on the wall, the LCD panel must be secured using the 4 mounting holes on the rear cover.

1) Do not press on 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.

3) Do not leave the module in high temperatures or in areas of high humidity for an extended period of time.

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

5) Avoid contact with water. It may cause a short circuit within the module.

6) Disconnect the AC power when replacing the backlight (CCFL) or inverter circuit. (High voltage occurs at the inverter circuit at 650Vrms.)

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

8) Use care when handling the wires or connectors of the inverter circuit. Damaging the wires may cause a short.

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

10) It is recommended not to exceed 1 hour of Power-On nor Burn-in period with LCD panel face down condition, in repair activity.

WARNINGS AND CAUTIONS

KDL-32/40/46/55HX750,751,753,755,756,757,758,759,75G(AEP/UK/IT/NOR)

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 interboard wiring to ensure that no wires are “pinched” or touching high-wattage resistors.

3. Check that all control knobs, shields, covers, ground straps, and mounting hardwar e have been replaced. Be absolutely certain that 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, “metallized” knobs, screws, and all other exposed metal parts for AC leakage. Check leakage as described below.

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

KDL-32/40/46/55HX750,751,753,755,756,757,758,759,75G(AEP/UK/IT/NOR)

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 0.5 mA (500 microamperes). Leakage current can be measured by any one of three methods.

1. A commercial leakage tester, such as the Simpson 229 or RCA WT-540A. Follow the manufacturers’ instructions to use these 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 0.75 V, so analog meters must have an accurate low voltage scale. The Simpson’s 250 and Sanwa SH-63TRD are examples of passive VOMs that are suitable. Nearly all battery-operated digital multimeters that have a 2 VAC range are suitable (see Figure A).

How to Find a Good Earth Ground

A cold-water pipe is a guaranteed earth ground; the cover-plate retaining screw on most AC outlet boxes is also at earth ground. 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. If a cold-water pipe is not accessible, connect a 60- to 100-watt trouble- light (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 B).

SAFETY CHECK-OUT

KDL-32/40/46/55HX750,751,753,755,756,757,758,759,75G(AEP/UK/IT/NOR)

SELF DIAGNOSIS FUNCTION

The units in this manual contain a self-diagnostic function. If an error occurs, the STANDBY LED will automatically begin to flash. The number of times the LED flashes translates to a probable source of the problem. A definition of the STANDBY LED flash indicators is listed in the instruction manual for the user’s knowledge and reference. If an error symptom cannot be reproduced, the remote commander can be used to review the failure occurrence data stored in memory to reveal past problems and how often these problems occur.

DIAGNOSTIC TEST INDICATORS

When an error occurs, the STANDBY LED will flash a set number of times to indicate the possible cause of the problem.

If there is more than one error, the LED will identify the first of the problem areas. Result for all of the following diagnostic items are displayed on screen. If the screen displays a “0”, no error has occurred .

DISPLAY OF STANDBY LED FLASH COUNT

0.5

0.5 3

SELF-DIAGNOSTIC SCREEN DISPLAY

STBY LED

Flash time

2 MAIN_POWE Main Power Over Voltage Protection 3

4 - Not used 5

6 BACKLIT E LED driver protection 7

9 - Not used 10 EMIT_ERR Transmitter board not connected 11 - Not used 12 - Not used

Service menu Item

name

(Screeen Disp lay)

DC_ALERT DC_ALERT

AUD_PROT Audio Abnormal Detection

HDMI_EQ HDM I equal iz e r/switch I2C NACK

TU_DEMOD Tuner or demodulat or I2C NA CK

HFR_ERR HFR Error

TCON_ERR T-CO N Error

P_ID_ERR Panel ID NVM Error

TEMP_ERR Thermal Error

FAN_ERR Not used

Software Error (Also the main board’s memory or Wi-Fi module is a suspect)

Diagn ostic Item Description

For errors with symptoms such as “power sometimes shuts off” or “screen sometimes goes out” that cannot be confirmed, it is possible to bring up past occurrences of failure for confirmation on the screen:

[To Bring Up Screen Test]

In standby mode, press buttons on the remote commander sequentially in rapid succession as shown below:

DISPLAY TV POWERChannel Volume

KDL-32/40/46/55HX750,751,753,755,756,757,758,759,75G(AEP/UK/IT/NOR)

* : Note that this differs from entering the service mode (volume +)

[SELF DIAGNOSTIC SAMPLE SCREEN DISPLAY]

SELFCHECK

000RESERVED‐‐‐‐‐‐‐‐‐‐ ‐‐‐‐‐‐‐‐‐‐ ‐‐‐‐‐‐‐‐‐‐ 00

Item name

STBY LED flash time

CPU Watch-dog timer

000RESERVED‐‐‐‐‐‐‐‐‐‐ ‐‐‐‐‐‐‐‐‐‐ ‐‐‐‐‐‐‐‐‐‐ 00 002MAIN_POWE‐‐‐‐‐‐‐‐‐‐ ‐‐‐‐‐‐‐‐‐‐ ‐‐‐‐‐‐‐‐‐‐ 00 003DC_ALERT‐‐‐‐‐‐‐‐‐‐ ‐‐‐‐‐‐‐‐‐‐ ‐‐‐‐‐‐‐‐‐‐ 00 003AUD_PROT‐‐‐‐‐‐‐‐‐‐ ‐‐‐‐‐‐‐‐‐‐ ‐‐‐‐‐‐‐‐‐‐ 00 003HDMI_EQ‐‐‐‐‐‐‐‐‐‐ ‐‐‐‐‐‐‐‐‐‐ ‐‐‐‐‐‐‐‐‐‐ 00 003TU_DEMOD‐‐‐‐‐‐‐‐‐‐ ‐‐‐‐‐‐‐‐‐‐ ‐‐‐‐‐‐‐‐‐‐ 00 004VLED‐‐‐‐‐‐‐‐‐‐ ‐‐‐‐‐‐‐‐‐‐ ‐‐‐‐‐‐‐‐‐‐ 00 004LD_ERR‐‐‐‐‐‐‐‐‐‐ ‐‐‐‐‐‐‐‐‐‐ ‐‐‐‐‐‐‐‐‐‐ 00 005HFR_ERR‐‐‐‐‐‐‐‐‐‐ ‐‐‐‐‐‐‐‐‐‐ ‐‐‐‐‐‐‐‐‐‐ 00 005TCON_ERR1108231325 ‐‐‐‐‐‐‐‐‐‐ ‐‐‐‐‐‐‐‐‐‐ 01 005P_ID_ERR‐‐‐‐‐‐‐‐‐‐ ‐‐‐‐‐‐‐‐‐‐ ‐‐‐‐‐‐‐‐‐‐ 00 006BACKLITE‐‐‐‐‐‐‐‐‐‐ ‐‐‐‐‐‐‐‐‐‐ ‐‐‐‐‐‐‐‐‐‐ 00 007TEMP_ERR‐‐‐‐‐‐‐‐‐‐ ‐‐‐‐‐‐‐‐‐‐ ‐‐‐‐‐‐‐‐‐‐ 00 007FAN_ERR‐‐‐‐‐‐‐‐‐‐ ‐‐‐‐‐‐‐‐‐‐ ‐‐‐‐‐‐‐‐‐‐ 00 010EMITTER‐‐‐‐‐‐‐‐‐‐ ‐‐‐‐‐‐‐‐‐‐ ‐‐‐‐‐‐‐‐‐‐ 00 101VPC_WDT‐‐‐‐‐‐‐‐‐‐ ‐‐‐‐‐‐‐‐‐‐ ‐‐‐‐‐‐‐‐‐‐ 00 102MEPS_WDT‐‐‐‐‐‐‐‐‐‐ ‐‐‐‐‐‐‐‐‐‐ ‐‐‐‐‐‐‐‐‐‐ 00 103HOST_WDT‐‐‐‐‐‐‐‐‐‐ ‐‐‐‐‐‐‐‐‐‐ ‐‐‐‐‐‐‐‐‐‐ 00 104STB

0081‐00671‐00088

Y_WDT‐

‐‐‐‐‐‐‐‐‐ ‐‐‐‐‐‐‐‐‐‐ ‐‐‐‐‐‐‐‐‐‐ 00

SELF DIAGNOSIS FUNCTION

Error count (00-99)

Error history (Last failure time beforehand) *1 Error history (Failure time before last) *1 Error history (The last failure time) *1

Panel operation time by hour (MAX:65535) Boot count (MAX:65535)

*1 : Format of error history

YYMMDDhhmm (in UTC) Example:1108231325 -> Aug 23 13:25 2011 UTC

Total operation time by hour (MAX:65535)

Since the diagnostic results displayed on the screen are not automatically cleared, always check the self-diagnostic screen. After you have completed the repairs, clear the result display to “0”.

Clearing the Self Check Diagnostic List

1. Error history and Error count : Press the Channel 8 => Channel 0 .

2. Panel operation time : Press the Channel 7 => Channel 0 .

Exiting the Self-diagnostic scre en

To exit the Self Diagnostic screen, turn off the power to the TV by pressing the POWER button on the remote or the POWER button on the TV.

KDL-32/40/46/55HX750,751,753,755,756,757,758,759,75G(AEP/UK/IT/NOR)

SEC 1. DISASSEMBLY

• There are clutch in the yellow frame[ ]. Therefore please be careful in the case of the disassembly or assembly of parts.

Note: When removing the rear cover, to prevent damaging the rear cover, please refer to “APPENDIX-1”.

KDL-32/40/46/55HX750,751,753,755,756,757,758,759,75G(AEP/UK/IT/NOR)

1-1. KDL-32HX750/751/753/755/757/758/759

1-1-1. HEAD STAND AND PIPE STAND

1 2

3 Screws (SCREW, +PSW M5X16) P/N: FX0029601

DISASSEMBLY

HEAD STAND

2 Screws (SCREW, +PSW M5X16) P/N:FX0029601

KDL-32/40/46/55HX750,751,753,755,756,757,758,759,75G(AEP/UK/IT/NOR)

PIPE STAND

1-1. KDL-32HX750/751/753/755/757/758/759

1-1-2. AC COVER AND POWER SUPPLY CORD

DISASSEMBLY

CABLE CLAMPER

Note: When assemble the AC COVER, hold the AC COVER and tighten a screw.

AC COVER

POWER SUPPLY CORD

1 Screw (SCREW, +PSW M3X6 W12) P/N: FX0001901

KDL-32/40/46/55HX750,751,753,755,756,757,758,759,75G(AEP/UK/IT/NOR)

REAR COVER

1-1. KDL-32HX750/751/753/755/757/758/759

1-1-3. REAR COVER

DISASSEMBLY

REAR COVER

5 Screws (SCREW, +PSW M3X6 W12) P/N:FX0001901 3 Screws (SCREW +BVTP 3X12 TYPE2 IT-3) P/N:FX0012779 7 Screws (SCREW, +BVTP 4X12 TYPE2 IT-3) P/N: FX0005801 2 Screws (SCREW, +PSW M4X10) P/N:FX0001601 2 Screws (JOINT, SCREW) P/N: FX0050801

KDL-32/40/46/55HX750,751,753,755,756,757,758,759,75G(AEP/UK/IT/NOR)

1-1. KDL-32HX750/751/753/755/757/758/759

DISASSEMBLY

1-1-4. SPEAKER BOX ASSY

<A>

SPEAKER BOX ASSY

<B><A>

<B>

SPEAKER BOX ASSY

KDL-32/40/46/55HX750,751,753,755,756,757,758,759,75G(AEP/UK/IT/NOR)

1-1. KDL-32HX750/751/753/755/757/758/759

1-1-5. HEM3 BOARD

DISASSEMBLY

HEM3 BOARD

KDL-32/40/46/55HX750,751,753,755,756,757,758,759,75G(AEP/UK/IT/NOR)

HEM3 BOARD

1-1. KDL-32HX750/751/753/755/757/758/759

1-1-6. SWITCH UNIT

DISASSEMBLY

SWITCH UNIT

KDL-32/40/46/55HX750,751,753,755,756,757,758,759,75G(AEP/UK/IT/NOR)

SWITCH UNIT

1-1. KDL-32HX750/751/753/755/757/758/759

DISASSEMBLY

1-1-7. HARNESS AND FFC

HARNESS ASSY

FLEXIBLE FLAT CABLE

KDL-32/40/46/55HX750,751,753,755,756,757,758,759,75G(AEP/UK/IT/NOR)

1-1. KDL-32HX750/751/753/755/757/758/759

1-1-8. ANTENNA

<A>

DISASSEMBLY

ANTENNA

1 Screw (SCREW (+PSW) (M3X6)) P/N: FX0001341

ANTENNA

<B><A>

<B>

ANTENNA

KDL-32/40/46/55HX750,751,753,755,756,757,758,759,75G(AEP/UK/IT/NOR)

ANTENNA

1 Screw (SCREW (+PSW) (M3X6)) P/N: FX0001341

1-1. KDL-32HX750/751/753/755/757/758/759

1-1-9. WIRELESS LAN CARD

DISASSEMBLY

WIRELESS LAN CARD

2 Screws (SCREW (+PSW) (M3X6)) P/N: FX0001341

WIRELESS LAN CARD

KDL-32/40/46/55HX750,751,753,755,756,757,758,759,75G(AEP/UK/IT/NOR)

WIRELESS LAN CARD

1-1. KDL-32HX750/751/753/755/757/758/759

1-1-10. BOTTOM FRAME

DISASSEMBLY

BOTTOM FRAME

2 Screws (SCREW, +BVTP 4X12 TYPE2 IT-3) P/N: FX0005801 3 Screws (SCREW, +PSW M4X10) P/N:FX0001601

KDL-32/40/46/55HX750,751,753,755,756,757,758,759,75G(AEP/UK/IT/NOR)

BOTTOM FRAME

1-1. KDL-32HX750/751/753/755/757/758/759

1-1-11. UNDER BRACKET

DISASSEMBLY

BAP BOARD

UNDER BRACKET

BAP BOARD

KDL-32/40/46/55HX750,751,753,755,756,757,758,759,75G(AEP/UK/IT/NOR)

1-1. KDL-32HX750/751/753/755/757/758/759

1-1-12. SIDE BRACKET

DISASSEMBLY

SIDE BRACKET

BAP BOARD

KDL-32/40/46/55HX750,751,753,755,756,757,758,759,75G(AEP/UK/IT/NOR)

SIDE BRACKET

BAP BOARD

1-1. KDL-32HX750/751/753/755/757/758/759

1-1-13. BAP BOARD

DISASSEMBLY

BAP BOARD

6 Screws (SCREW (+PSW) (M3X6)) P/N: FX0001341

KDL-32/40/46/55HX750,751,753,755,756,757,758,759,75G(AEP/UK/IT/NOR)

BAP BOARD

1-1. KDL-32HX750/751/753/755/757/758/759

1-1-14. GL2 BOARD

DISASSEMBLY

2 3

GL2 BOARD GL2 BOARD

4 Screws (SCREW (+PSW) (M3X6)) P/N: FX0001341

KDL-32/40/46/55HX750,751,753,755,756,757,758,759,75G(AEP/UK/IT/NOR)

1-1. KDL-32HX750/751/753/755/757/758/759

1-1-15. SPACER (B)

DISASSEMBLY

Note: Don’t inset G board to PANEL without SPACER

KDL-32/40/46/55HX750,751,753,755,756,757,758,759,75G(AEP/UK/IT/NOR)

1-1. KDL-32HX750/751/753/755/757/758/759

1-1-16. INSULATION SHEET

DISASSEMBLY

INSULATION SHEET

KDL-32/40/46/55HX750,751,753,755,756,757,758,759,75G(AEP/UK/IT/NOR)

INSULATION SHEET

1-1. KDL-32HX750/751/753/755/757/758/759

1-1-17. HL BOARD

DISASSEMBLY

HL BOARD

KDL-32/40/46/55HX750,751,753,755,756,757,758,759,75G(AEP/UK/IT/NOR)

HL BOARD

1-1. KDL-32HX750/751/753/755/757/758/759

1-1-18. PANEL BRACKET (H)

DISASSEMBLY

2 Screws (SCREW, +PSW M3X6 W12) P/N:FX0001901

PANEL BRACKET (H)

KDL-32/40/46/55HX750,751,753,755,756,757,758,759,75G(AEP/UK/IT/NOR)

PANEL BRACKET (H)

1-1. KDL-32HX750/751/753/755/757/758/759

1-1-19. PANEL BRACKET (V)

DISASSEMBLY

PANEL BRACKET (V)

KDL-32/40/46/55HX750,751,753,755,756,757,758,759,75G(AEP/UK/IT/NOR)

PANEL BRACKET (V)

+ 115 hidden pages