NEC MultiSync LCD1920NX User And Service Manual page 91

CONTNUE
Is C79 "+" approximately 3.5V?
YES
Is C65 "+" approximately 3.5V?
YES
Is C172 "+" approximately 3.5V?
(Digital signal input and change to digital
source when input analog at the same time)
YES
Check the power of IC18 pin5 and pin6 is
under 1V. (When system is into power
saving mode)
NO
END
NO
NO
NO
YES
6-11
Failure point
1) Check +5V ok?
2) Check IC08 ok?
3) Check the value of R198, R199.
Failure point
1) Check +5V ok?
2) Check IC31 ok?
3) Check the value of R80, R218.
Failure point
Check the following parts:
D115 (1N4004),D116(11DQ06),Q10,R145,R146
Failure point
Check the following parts:
Q03, R87, IC23, IC25