LG Flatron L1510S - Page 15

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1. CHECK PIN141, 142
SOLDERING CONDITION
2. CHECK X201
3. TROUBLE IN U201
U201
POWER PINS
3.3V?
NO
CHECK U802, U806
U201 PIN141, 142
OSCILLATE AS 14.3M?
NO
CHECK CONNECTION LINE
FROM U201 TO U401/U411
NO
TROUBLE IN CABLE
OR LCD MODULE
TROUBLE IN CABLE
OR LCD MODULE
CHECK
CONNECTION LINE
FROM U201 TO J402
CHECK U805
CHECK
U805
U401/U411 PIN1
3.3V?
NO
NO
YES
YES
YES
(LG Philips Module
& Hydis Module)
YES
(AUO Module)
YES
YES
3. NO RASTER (OSD IS NOT DISPLAYED) – gmZAN2
NO RASTER
(OSD IS NOT DISPLAYED)
U401/U411
PIN31 IS 65MHz CLOCK?
PIN27 IS 48KHz H-SYNC?
PIN28 IS 60Hz V-SYNC?
PIN30 IS 48KHz DEN?
IS PULSE APPEARED
AT SIGNAL PINS?
J402
PIN63 IS 65MHz CLOCK?
PIN66 IS 48KHz H-SYNC?
PIN70 IS 60Hz V-SYNC?
PIN69 IS 48KHz DEN?
IS PULSE APPEARED
AT SIGNAL PINS?
J402 PIN74, PIN1
3.3V?
YES