LG Flatron L1710S Series Service Manual page 16

3. NO RASTER (OSD IS NOT DISPLAYED) – gmZAN3SL
NO RASTER
(OSD IS NOT DISPLAYED)
U201
POWER PINS
3.3V?
2
U201
PIN88
OSCILLATE AS
12MHZ?
6 7
U501
PIN43 IS 64KHz H-SYNC?
PIN44 IS 60Hz V-SYNC?
IS PULSE APPEARED
AT SIGNAL PINS?
U501 PIN8
5V?
TROUBLE IN CABLE
OR LCD MODULE
Waveforms
2
U201-#88
YES
YES
YES
YES
6
U501-#43
NO
NO
NO
NO
7
U501-#44
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CHECK U803, U801
1. CHECK PIN88
SOLDERING CONDITION
2. CHECK X501
3. TROUBLE IN U201
CHECK CONNECTION LINE
FROM U201 TO U501
CHECK 5VR LINE