6-16
11. Checking the DC/DC converter circuit
Check if the 5V is output from I102 pin 2.
OK
NG
Check if TTL "H" is output from Q102-base.
OK
NG
Q101, D101, R101, R102 circuit.
Check if the 12V is output from I101 pin 5,6,7,8.
OK
NG
I101 failure.
Check the input of 12V to the I102 pin1.
a
Check the output of 3.3V line voltage from I103 pin 2.
OK
NG
Is the output FB108 being inputted to I103 pin 3?
OK
NG
Failure point
Printed wire broke between I103 pin 3 and output of FB108.
Failure point
I103 failure
Failure point
Printed wire broke between I103 pin 2 and IC 401 power supply pin.
OK
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...