Trouble Shooting; No Power; Set Reboots; Power Error - Sony KDL-40X4500 Service Manual
Flat panel color tv, eg1h chassis
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Also See for KDL-40X4500:
- Operating instructions manual (188 pages) ,
- Operating instruction (112 pages) ,
- Service manual (78 pages)
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3-7. Trouble Shooting
3-7-1. No Power
When the TV Set has no power please see flowchart [A].
3-7-2. Set Reboots
When the TV Set tries to restart please check the following:-
1.
FBA board.
- CN2800 12v power and harness to G6.
- F4100, F4101, F4102, F5400, F7800, F7801
for conduction .
2.
If no problems are found with the power rail replace the
FBA board.
3-7-3. Power Error
When the TV Set indicates a power error please check the following:-
1.
Check the TV micro pin 79 and 138 on the AE board.
2.
Check 12V at CN1000 and F1001 on the AE board.
3.
Check the G6 board.
3-7-4. T-Con Error
When the TV Set has a T-Con error please check the following:-
1.
Check the BE micro pin 128 on the FBA board.
2.
Replace the panel module.
3-7-5. Back Light Error
When the TV Set has a Back Light error please check the following:-
1.
Check the BE micro pin 78 on the FBA board.
2.
Replace the D4 board in CCFL model and GL board in LED
models.
3-7-6. Temperature Error
When the TV Set temperature is high please check the following:-
1.
Check IC1000 on the AE board and replace the AE board
if the temperature monitoring circuit has a problem.
2.
Check the panel.
3-7-7. Audio Error
When the TV Set has an audio error please check the following:-
1.
Check IC1800 on AE board. The audio amp detects over
current, thermal shutdown and/or low voltage.
2.
Check voltage at CN1002 pin 20 on the AE board.
3.
Replace the AE board.
3-7-8. Fan Error
When the TV Set has a fan error please check the following:-
1.
Check the BE micro pin 154 on the FBA board.
2.
Check fan harness connection.
3.
Check the voltage on CN1301 the AE board.
4.
Replace the fan.
3-7-9. Balancer Error
When the TV Set has a Balancer board error please check the
following:-
1.
Check the BE micro pin 163 on the FBA board.
2.
Check harness connection CN6700 on the D4 board and
CN104 on tne balancer board of panel module (40 inches).
3.
Check harness connection CN9700, CN9701 on the CB1
board and panel module (46/55 inches).
4.
Replace the panel module.
5.
Replace CB1 board (46/55 inches).
3-8. CB1 Board Replacement (46/55 inches)
When replacing the CB1 board adjustment data held in the backlight
NVM of the panel can be copied to the CB1 board. Data held on the
CB1 board can also be copied to the panel in the case of panel
replacement.
3-8-1. Copying data from Panel to CB1 Board
1.
Enter Service Mode (See 3-1).
2.
Go in to BEM Service Mode (See 3-4) and go to
'DATA_COPY' (See Pic.7).
Pic.7
3.
Change 'COPY_SW1' to 1 and wait until the message
" COPIED NVM TO FLASH" appears (See Pic.8).
At this point make sure the TV set is not powered off until
this message appears.
Pic.8
4.
Software has now been copied. Switch AC off and back on
again to confirm.
- 14 -
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