IBM T541

CHECK U802
NO
- 13 -
1. CHECK PIN 93, 94
SOLDERING CONDITION
2. CHECK X201
3. TROUBLE IN U201
U804, U803, U806
POWER PINS
3.3V, 2.5V?
NO
CHECK U801 PIN 5, 2
U804, U803, U806
X201
OSCILLATE AS
14,3181M?
NO
CHECK U201 OR U401
SOLDERING CONDITION AND
CHECK CONNECTION LINE
FROM U201 TO U201 or U401
NO
TROUBLE IN CABLE
OR LCD MODULE
J706’S PIN1
3.3V?
YES
YES
YES
YES
3. WHITE SCREEN (OSD IS NOT DISPLAYED)
WHITE SCREEN
(OSD IS NOT DISPLAYED)
U201
PIN 31 IS 65MHz CLOCK?
PIN 35 IS 48KHz H-SYNC?
PIN 36 IS 60Hz V-SYNC?
IS PULSE APPEARED
AT SIGNAL
PINS?
Input
1024x768@60Hz Signal.