NEC AS120-1 User Manual

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TROUBLESHOOTING GUIDE
1. NO POWER
NO POWER
(POWER INDICATOR OFF)
TROUBLE IN
BRIDGE DIODE
(D901)
TROUBLE IN
FUSE (F901)
TROUBLE IN
IC901
CHECK
FUSE OK?
(F901)
CHECK
D901
BRIDGE DIODE?
NO
YES
YES
NO
NO
CHECK
C905(+) VOLTAGE
145VDC at 110V input
310VDC at 220V input
TROUBLE IN
D924, D926, D923,
D922, D921, D920
TROUBLE IN
Q912, Q913, Q915, Q914,
IC903, IC904, Q902
YES
NO
CHECK
D924, D926, D923,
D922, D921, D920 ?
YES

NEC AS120-1 Specifications

General

Brand	NEC
Model	AS120-1
Category	Monitor
Language	English