HP LP2065 - Page 17

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3. NO RASTER (OSD IS NOT DISPLAYED) - MAIN
1. CHECK PIN 202, 203
SOLDERING CONDITION
2. CHECK X401
3. TROUBLE IN U201
U401
PIN102 (3.3V)
PIN102 (2.5V)
NO
NO
NO
CHECK U205 ~ U207
U401
PIN 202, 203
14.318MHZ?
CHECK CONNECTION LINE
FROM DVI-I TO U401
TROUBLE IN CABLE
OR LCD MODULE
YES
NO RASTER
(OSD IS NOT DISPLAYED)
U401
PIN18,36 IS 64KHz H-SYNC?
PIN19,37 IS 60Hz V-SYNC?
IS PULSE APPEARED
AT SIGNAL PINS?
AT MODE 15?
YES
YES
4
4
U401-#202, 203
Waveforms