NEC MultiSync 20WGX2 Series Service Manual page 95

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Check the 3.3 V power are supplied on
I307 pin 2, the 1.8V power are supplied on
I306 pin 2
OK
Check all LVDS signal pins, output from
I311, I312.
OK
Failure point
1) The cable broke between P310 and LCD
module.
2) LCD module failure.
Check if the voltage on I307,
NG
I306 pin 3 that is high level
DC at 5V.
OK
Failure point
I307, I306 failure.
Failure point
NG
Printed wire broke or shorted between
I311, I312 and P305.
6 - 4
Failure point
NG
1) Printed wire broke between P302 pin
1, 2, 3 and I307, I306.
2) Check power board.