LG FLATRON W1946P-BFW Service Manual page 17

NO RASTER
(OSD IS NOT DISPLAYED)
CHECK U501
PIN32(3.3V)
PIN34(1.8V)
PIN 96,97
1
CHECK U501
PIN27(H-SYNC) AND
PIN28(V-SYNC).
IS PULSE APPEARED AT
SIGNAL PINS?
TROUBLE IN CABLE
OR LCD MODULE
Waveforms
U501-#96
1
Copyright 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
3. NO RASTER (OSD IS NOT DISPLAYED) - MAIN
YES
U501
14.3MHZ?
YES
YES
NO
NO
NO
- 17 -
CHECK IC703(3.3V),
IC702(1.8V)
1. CHECK PIN 96,97
SOLDERING CONDITION
2. CHECK X501
3. TROUBLE IN U501
CHECK CONNECTION LINE
FROM D-SUB TO U501
LGE Internal Use Only