6-7
4. Abnormal screen
Check the R, G, B video signal from
computer input on D-Sub R, G, B
connector.
OK
NG
Failure point
1) No R, G and B video signal output from host computer.
Check computer
2) Video signal cable disconnection.
Check the R, G, B input signals on I401
pin C13, C15 & C17, respectively that
their level is 0.7Vp-p maximum.
OK
NG
Failure point
In the case of the Red signal. (A Green and Blue signal is
the same path, too.)
1) Printed wire broke between D-Sub(R) and I401 pin
C13.
2) R427 short.
3) C416 open.
4) R424 open.
Is the pulse of the TTL level being
output to P305, P306 from the data
line of I401?
OK
NG
Failure point
1) Printed wire broke between I401 data line and P305, P306
2) I401 failure.
Check the negative horizontal sync
pulse output to P305 pin 38 from
I401 pin E19 at TTL level.
OK
NG
Failure point
1) Printed wire broke between I401 pin E19 and P305 pin 38.
2) R314 open
3) C355 short
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Summary of Contents for NEC MultiSync LCD1525V LCD1525V LCD1525V
Page 8: ...1 5 MultiS 4 Figure E 1 Figure C 1 Figure D 1 Clip A Clip B Power Switch Quick Start cont...
Page 9: ...1 6 5 Quick Start cont...
Page 22: ...1 19 2 B Version User s Manual...
Page 31: ...1 28 Installation E 9 MultiSyn Figure D 1 Figure E 1 Figure C 1 Clip B Clip A Power Button...
Page 32: ...1 29 E 10 Installation...
Page 46: ...3 2 Photo 2 Photo 3 Screw B Screw C HOOK...
Page 47: ...3 3 Photo 4 Photo 5 Screw D Screw E FUNCTION BD ASSY P601 Screw E Screw E...
Page 109: ...for Human Potential...