NEC MultiSync LCD1550ME Service Manual page 80

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Check the data enable of positive

polarity are output on P307 pin 42.

Check the data signal output on

P306 and P307 R, G, B data pin.

1) The cable broke between P306, P307 and LCD module.

2) LCD module failure.

Failure point

1) I306 failure

2) Printed wire broke between I306 and P307 pin 37.

1) I306 failure

2) Printed wire broke between I306 and P306 data line

6-5

Failure point

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