Sony Bravia KDL-32EX725 User manual

SERVICE MANUAL
LCD Digital Color TV
AZ2-F Chassis
Segment: 3a-2
9-888-405-01
Version Date Subject
1.0 2/16/2011 No revisions or updates are applicable at this time.
ORIGINAL MANUAL ISSUE DATE: 2/2011
HISTORYINFORMATIONFORTHEFOLLOWINGMANUAL:

SERVICE MANUAL
LCD Digital Color TV
AZ2-F Chassis
Segment: 3a-2
9-888-405-01
Self Diagnosis
Supported model
KDL-40EX725

MODELLIST
MODEL COMMANDER DESTINATION MODEL COMMANDER DESTINATION
KDL-32EX725 RM-YD062 CHILE/PERU
KDL-32EX725 RM-YD062 VENEZUELA
KDL-40EX725 RM-YD062 CHILE/PERU
KDL-40EX725 RM-YD062 VENEZUELA
KDL-55EX725 RM-YD062 CHILE/PERU
KDL-55EX725 RM-YD062 VENEZUELA
9-888-405-01

KDL-32EX725/40EX725/55EX725 i
TABLEOFCONTENTS
Section 1 - Safety and Features.................................................1
Warnings and Cautions ..............................................................1
Handling the FFC Connector .....................................................3
Safety-Related Warnings ...........................................................4
Safety Check-Out .......................................................................5
Self Diagnosis Function .............................................................7
Overview ....................................................................................8
Features .....................................................................................8
See It All in 3D ............................................................................. 8
MotionFlow™ XR 240 ................................................................. 8
Navigation Made Easy ................................................................ 8
LightSensor™ Technology .......................................................... 8
X-Reality™ Engine ...................................................................... 8
Presence Sensor ......................................................................... 9
USB Photos, Videos & Music ...................................................... 9
Edge LED Backlighting ................................................................ 9
Internet Streaming & Connectivity ............................................... 9
Faster Start-Up ............................................................................ 9
BRAVIA® Sync™ Compatible ..................................................... 9
Specications ...........................................................................10
Section 2 - Software Requirements.........................................12
Overview ..................................................................................12
Software Updates for Customers .............................................12
Software Updates for Servicers ...............................................13
Software Update Responsibility ............................................... 13
Checking the Software Version ................................................. 14
Examples of Software Correctable Symptoms .......................... 14
Section 3 - Chassis Overview ..................................................15
Overview ..................................................................................15
Overall Circuit Description ........................................................17
Main Board ...............................................................................17
Tuner ......................................................................................... 17
X-Reality Processor ................................................................... 17
Audio Amplier .......................................................................... 17
Temperature Sensor .................................................................. 17
Power Supply ...........................................................................18
Power Supply for Backlight System .........................................18
LD Board (LED Driver Board) ..................................................18
3D IR Emitter ............................................................................18
Switch Unit ...............................................................................18
Motion Sensor Board ...............................................................18
IR Board ...................................................................................18
LCD Panel Assembly ...............................................................19
T-CON Board ............................................................................. 19
Diagrams ..................................................................................20
Block Diagram ........................................................................... 20
Connector Diagrams ................................................................. 22

KDL-32EX725/40EX725/55EX725 ii
TABLE OF CONTENTS
Section 4 - Troubleshooting .....................................................28
Overview ..................................................................................28
Updating the Software ............................................................... 28
Triage Chart .............................................................................29
Protection Shutdown ................................................................30
Standby LED Flash Count ......................................................... 30
Diagnostic Code Descriptions ..................................................34
Viewing the Self Check Diagnostic History ............................... 35
Section 5 - Flow Charts and Diagrams ...................................36
Overview ..................................................................................36
No Power ................................................................................... 37
Standby LED Blinking ................................................................ 39
No Picture/No Sound ................................................................. 45
TV/Remote Commander Buttons Not Working ......................... 48
Network Not Connecting .......................................................... 50
3D Does not Display .................................................................. 52
Skype Accessory Not Working .................................................. 53
Section 6 - Disassembly/Part Number Information ...............55
Table-Top Stand Assembly Removal ........................................55
Rear Cover and AC Cover Removal ........................................56
Switch Unit and Speakers Removal .........................................57
LD Board, HEM2 Board, HLR2 Board and
HMS3 Board Removal ........................................................58
G10A/G4B/G6A/G8A (Power Supply) Board and
BATV (Main) Board Removal .............................................59
KDL-32EX725/40EX725 Only ................................................... 59
KDL-55EX725 Only ................................................................... 60
Panel Brackets and LCD Panel Removal ................................61
Cleaning the LCD Panel ............................................................ 61
Screws .....................................................................................62
Connectors ...............................................................................62
KDL-32EX725 Only ................................................................... 62
KDL-40EX725 Only ................................................................... 63
KDL-55EX725 Only ................................................................... 63
Accessories and Packaging .....................................................64
Miscellaneous ..........................................................................64
Remote Commander ................................................................64
Wire Dressing ...........................................................................65
KDL-32EX725 Only ................................................................... 65
KDL-40EX725 Only ................................................................... 65
KDL-55EX725 Only ................................................................... 65
Section 7 - Service Adjustments .............................................66
Overview ..................................................................................66
Updating the Software ..............................................................66
Accessing Service Adjustment Mode .......................................66
Viewing or Changing Service Data ............................................ 67

KDL-32EX725/40EX725/55EX725 iii
TABLE OF CONTENTS
Verifying Service Adjustments ..................................................68
Verifying the Segment Code ...................................................... 68
Verifying the Destination ............................................................ 69
Verifying the Model Name ......................................................... 69
Optional Adjustments ...............................................................70
Setting White Balance Adjustments .......................................... 70
Resetting the TV to Factory Condition .....................................71
Resetting the TV to Factory Condition Using Service Mode ..... 71
Appendix A - Removing the Rear Cover ............................... A-1
Removing the Power Cord from the Rear Cover ................... A-1
KDL-32EX725 ..........................................................................A-1
KDL-40EX725 ..........................................................................A-3
Appendix B - Attaching the Rear Cover ................................ B-1
Reattaching the Rear Cover to the Bezel ............................... B-1
KDL-32EX725 ..........................................................................B-1
KDL-40EX725 ..........................................................................B-2
Appendix C - Replacing the LCD Panel ................................ C-1
Removing the LCD Panel from the Bezel .............................. C-1
Reattaching the LCD Panel onto the Bezel ............................C-2
Appendix D - Rear Cover Caution ......................................... D-1
Appendix E - Setup Guide ...................................................... E-1

KDL-32EX725/40EX725/55EX725 1
WARNINGS AND CAUTIONS
CAUTION
These servicing instructions are for use by qualied service personnel only. To reduce the risk of electric shock, do not perform any servicing other
than that contained in the operating instructions unless you are qualied to do so.
CARRYING THE TV
• Carry the TV with the 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 damage.
• Disconnect all cables when carrying the TV.
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.
! SAFETY-RELATED COMPONENT WARNING!!
Components identied by shading and ! mark on the exploded views are critical for safe operation.
Replace all components with Sony parts whose part numbers appear as shown in this manual or in supplements published by Sony. It is essential
that all critical parts be replaced only with the part number specied in this manual to prevent electric shock, re, or other hazard.
Circuit adjustments that are critical for safe operation are identied in this manual.
Follow these procedures whenever critical components are replaced or improper operation is suspected.
NOTE: Do not modify the original design without obtaining written permission from the manufacturer or you will void the original parts and labor
guarantee.
SECTION1-SAFETYANDFEATURES

KDL-32EX725/40EX725/55EX725 2
SECTION 1 - SAFETY AND FEATURES
CAUTION
W Do Not use paper towels, any type of abrasive pad, rags, rubber or vinyl materials to clean the screen. Using these materials could easily
scratch the screen which may result in permanent damage.
W Do Not use any cleaning product containing alkaline/acid cleaner, scouring powder, or volatile solvent, such as alcohol, ammonia,
benzene, thinner or insecticide. Using any of these harsh cleaners may result in permanent damage to the screen.
W Do Not spray water or detergent directly onto the TV screen . If liquid drips into the bottom of the screen it may cause a failure.
CLEANING THE LCD PANEL
CAUTION: When cleaning the TV, be sure to unplug the power cord to avoid any chance of electric shock.
Clean the cabinet of the TV with a dry soft cloth.
Wipe the LCD screen gently with a soft cloth.
R Stubborn stains may be removed with a cloth slightly moistened with a solution of mild soap and warm water.
R If using a chemically pretreated cloth, please follow the instruction provided on the package.
R Never use strong solvents such as a thinner, alcohol or benzine for cleaning.
R Periodic vacuuming of the ventilation openings is recommended to ensure to proper ventilation.

KDL-32EX725/40EX725/55EX725 3
SECTION 1 - SAFETY AND FEATURES
HANDLING THE FFC CONNECTOR
Use caution when you connecting or removing the FFC connector.
Remove the connector by the reinforcement tab only.
1. Holding onto the reinforcement tab,
insert the FFC connector into the connector slot.
1. Gently press down on the release tab of the connector slot.
2. Holding onto the reinforcement tab of the FFC connector,
pull out the connector while continuing to hold down
the release tab of the connector slot.
(See caution below.)
Use the
tab to
insert
connector.
2
Press down
Main Board
Main Board
CAUTION: The FFC connector can be inserted into the Main Board upside down.
If it is inserted upside down, the pins on the FFC connector
will short-circuit and damage the board.
Reinforcement tab shows Terminal side shows
Use the
tab to
remove
connector.
Inserted Correctly Inserted Incorrectly
Correct Incorrect
DISCONNECTING THE FFC CONNECTOR CONNECTING THE FFC CONNECTOR

KDL-32EX725/40EX725/55EX725 4
SECTION 1 - SAFETY AND FEATURES
SAFETY-RELATED WARNINGS
USE CAUTION WHEN HANDLING THE LCD PANEL
When repairing the LCD panel, be sure you are grounded by using a wrist band.
When installing the LCD panel on a 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 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. During the repair, DO NOT leave the Power On for more than 1 hour while the TV is face down on a cloth.