LG Flatron W1946S

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Copyright 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
3. NO RASTER (OSD IS NOT DISPLAYED) - MAIN
1. CHECK PIN 1,2
SOLDERING CONDITION
2. CHECK X501
3. TROUBLE IN U201
CHECK U201
PIN51(3.3V)
PIN30(1.8V)
NO
NO
NO
CHECK IC1(3.3V),
IC1(1.8V)
U201
PIN 1,2
14.3MHZ?
CHECK CONNECTION LINE
FROM D-SUB TO U201
TROUBLE IN CABLE
OR LCD MODULE
YES
YES
NO RASTER
(OSD IS NOT DISPLAYED)
CHECK U201
PIN16(H-SYNC) AND
PIN17(V-SYNC).
IS PULSE APPEARED AT
SIGNAL PINS?
YES
1
Waveforms
1
U201-#1