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NO RASTER
(OSD IS NOT DISPLAYED)
CHECK IC102 PIN7(3.3V)
PIN131(1.8V)?
IC101 PIN201, 202
1
14.3MHZ?
CHECK IC102
PIN168(H-SYNC) AND
PIN169(V-SYNC).
IS PULSE APPEARED
AT SIGNAL PINS?
TROUBLE IN CABLE OR LCD
MODULE
Waveforms
1
IC102-#201
Copyright
2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
3. NO RASTER(OSD IS NOT DISPLAYED)-MAIN
YES
YES
YES
NO
NO
NO
- 18 -
CHECK IC702(1.8V),
IC703(3.3V)
1. CHECK PIN201, 202
SOLDERING CONDITION
2. CHECK X501
3. TROUBLE IN IC502
CHECK CONNECTION LINE
FROM D-SUB TO IC502
LGE Internal Use Only
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