NEC MultiSync 20WGX2 Service Manual page 95

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Check the 3.3 V pow er are suppl Check the 3.3 V pow er are supplied on ied on
I307 pin 2, the 1.8V power are supplied on I307 pin 2, the 1.8V power are supplied on
I306 pin 2 I306 pin 2
O O K K
Check all LVDS signal pins, output from Check all LVDS signal pins, output from
I311, I312. I311, I312.
O O K K
Failure point Failure point
1) The cable broke between P 1) The cable broke bet ween P 310 310and LCD and LCD
modul e . modul e .
2) LCD m 2) LCD m odule fai odule failure. lure.
Check if the voltage on I307, Check if the voltage on I307,
N N G G
I306 pin 3 that is high level I306 pin 3 that is high level
DC at 5V. DC at 5V.
O O K K
Failure point Failure point
I307, I306 failure. I307, I306 failure.
Failure point Failure point
N N G G
Printed wire broke Printed wire broke or shorted or shorted between between
I311, I311, I312 I312and andP305 P305 . .
6 - 4 6 - 4
Fa Fa ilure ilure point point
N N G G
1) Printed wire broke between P 302 1) Printed wire broke between P
1, 2, 3 and I307, I306. 1, 2, 3 and I307, I306.
2) Check power board. 2) Check power board.
302pin pin