NEC MultiSync LCD1550ME User Manual

6-8
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Check the negative vertical sync
pulse output to P307 pin 40 from
I306
p
in 73 at TTL level.
OK
NG
Failure point
1) Printed wire broke between I306 pin 73 and P307 pin 40.
2) R351 open
3) C384 short
Check the positive DE pulse
output to P307 pin 42 from I306
p
in 43 at TTL level.
OK
NG
Failure point
1) Printed wire broke between I306 pin 42 and P307 pin 42.
2) R352 open
3) C385 short
Check the SHFCLK OUTPUT to
P307 pin 44 from I306 pin 44 at
TTL level.
OK
NG
Failure point
1) Printed wire broke between I306 pin 44 and P307 pin 39.
2) FB312 open
3) FB311 open
4) C354 short
5) C355 short
Process "Checking the
resolution change IC movement"
section.

NEC MultiSync LCD1550ME Specifications

General

Brand	NEC
Model	MultiSync LCD1550ME
Category	Monitor
Language	English