6-13
8. Checking the interface circuit of sync signal
8.1 Checking the control circuit of horizontal sync pulse
8.2 Checking the control circuit of vertical sync pulse
OK
NG
Check the horizontal sync signal on I401 pin A1 TTL level.
Process "Checking the resolution change IC movement" section.
Failure point
1) Video cable may have failed.
2) Printed wire broke between P303 pin 13 and I401 pin A1
3) FB402, R437 open
OK
NG
Check the vertical sync signal on I401 pin C1 TTL level.
Process "Checking the resolution change IC movement" section.
Failure point
1) Video cable may have failed.
2) Printed wire broke between P303 pin 14 and I401 pin C1
3) FB403, R438 open
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...