LG FLATRON L1770HQ Service Manual page 16
Color monitor
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Also See for FLATRON L1770HQ:
- Service manual (26 pages) ,
- User manual (23 pages) ,
- Specifications (2 pages)
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3. NO RASTER (OSD IS NOT DISPLAYED) – MSTAR
NO RASTER
(OSD IS NOT DISPLAYED)
PIN 16, 75
PIN96, 97
1
OSCILLATE AS
14.31MHZ?
PIN27 IS 48KHz H-SYNC?
2
PIN28 IS 60Hz V-SYNC?
IS PULSE APPEARED
AT SIGNAL PINS?
AT MODE 12?
TROUBLE IN CABLE
OR LCD MODULE
Waveforms
1
U101-#96, 97
U101
3.3V?
YES
U101
YES
U101
YES
2
U101-#27 H-SYNC
NO
NO
NO
2 U101-#28 V-SYNC
- 16 -
CHECK U202
1. CHECK C108, C109
SOLDERING CONDITION
2. CHECK X101
3. TROUBLE IN U101
CHECK CONNECTION
LINE FROM D-SUB TO
U101
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