Sony KDL-40NX725 / KDL-46NX725 Service Manual ▷ View online
KDL-40NX725/46NX725
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TABLE OF CONTENTS
Diagrams ..................................................................................23
Block Diagram ........................................................................... 23
Connector Diagrams ................................................................. 25
Connector Diagrams ................................................................. 25
Section 4 - Troubleshooting .....................................................29
Overview ..................................................................................29
Updating the Software ............................................................... 29
Triage Chart .............................................................................30
Protection Shutdown ................................................................31
Protection Shutdown ................................................................31
Standby LED Flash Count ......................................................... 31
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 .................................................................................. 40
Standby LED Blinking ................................................................ 39
No Picture .................................................................................. 40
Section 6 - Disassembly/Part Number Information ...............42
Table-Top Stand Assembly Removal ........................................42
Rear Cover and AC Cover Removal ........................................43
Switch Unit, HEM2 Board, Camera Module, and
Rear Cover and AC Cover Removal ........................................43
Switch Unit, HEM2 Board, Camera Module, and
Wireless LAN Card Removal ..............................................44
G4BW/G5AW (Power Supply) Board and
LD Board Removal .............................................................45
BATL (Main) Board Removal ....................................................46
Center Cabinet, HLT2 Board and LCD Panel Removal ...........47
Center Cabinet, HLT2 Board and LCD Panel Removal ...........47
Cleaning the LCD Panel ............................................................ 47
Screws .....................................................................................48
Connectors ...............................................................................48
Connectors ...............................................................................48
KDL-40NX725 Only ................................................................... 48
KDL-46NX725 Only ................................................................... 48
KDL-46NX725 Only ................................................................... 48
Accessories and Packaging .....................................................49
Miscellaneous ..........................................................................49
Remote Commander ................................................................49
Wire Dressing ...........................................................................50
Miscellaneous ..........................................................................49
Remote Commander ................................................................49
Wire Dressing ...........................................................................50
KDL-40NX725 Only ................................................................... 50
KDL-46NX725 Only ................................................................... 50
KDL-46NX725 Only ................................................................... 50
Section 7 - Service Adjustments .............................................51
Overview ..................................................................................51
Updating the Software ..............................................................51
Accessing Service Adjustment Mode .......................................51
Updating the Software ..............................................................51
Accessing Service Adjustment Mode .......................................51
Viewing or Changing Service Data ............................................ 52
Verifying Service Adjustments ..................................................53
Verifying the Segment Code ...................................................... 53
Verifying the Destination ............................................................ 53
Verifying the Model Name ......................................................... 54
Verifying the Destination ............................................................ 53
Verifying the Model Name ......................................................... 54
Optional Adjustments ...............................................................54
Setting White Balance Adjustments .......................................... 54
Resetting the TV to Factory Condition .....................................56
Resetting the TV to Factory Condition Using Service Mode ..... 56
KDL-40NX725/46NX725
iii
TABLE OF CONTENTS
Appendix A - Removing the Rear Cover ...............................A-1
Removing the Power Cord from the Rear Cover ................... A-1
Appendix B - Attaching the Rear Cover ................................B-1
KDL-40NX725 Only ............................................................... B-1
KDL-46NX725 Only ............................................................... B-2
KDL-46NX725 Only ............................................................... B-2
KDL-40NX725/46NX725
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WARNINGS AND CAUTIONS
CAUTION
These servicing instructions are for use by qualified 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 qualified 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.
• 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 identified 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
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 specified in this manual to prevent electric shock, fire, or other hazard.
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.
NOTE: Do not modify the original design without obtaining written permission from the manufacturer or you will void the original parts and labor
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.
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-40NX725/46NX725
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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
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
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
Wipe the LCD screen gently with a soft cloth.
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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.
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