LG FLATRON W1952S Service Manual page 16

NO RASTER
(OSD IS NOT DISPLAYED)
CHECK U201
PIN114(3.3V)
PIN21(1.8V)
1
PIN 127,128
14.3MHZ?
CHECK U201
PIN32(H-SYNC) AND
PIN33(V-SYNC).
IS PULSE APPEARED AT
SIGNAL PINS?
TROUBLE IN CABLE
OR LCD MODULE
Waveforms
1
U201-#127
Copyright 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
3. NO RASTER (OSD IS NOT DISPLAYED) - MAIN
YES
U201
YES
YES
NO
NO
NO
- 16 -
CHECK IC700(3.3V),
IC701(1.8V)
1. CHECK PIN 127,128
SOLDERING CONDITION
2. CHECK X501
3. TROUBLE IN U201
CHECK CONNECTION LINE
FROM D-SUB TO U201
LGE Internal Use Only