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Page Title:
INSTRUMENT PANEL GAGE LIGHTS DO NOT OPERATE - continued |
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 TM 10-3930-673-20-1
5. INSTRUMENT PANEL GAGE LIGHTS DO NOT OPERATE (CONT).
KNOWN INFO
TEST OPTIONS
4
Bulb(s) OK.
Voltage Test.
Is 24 vdc present at circuit
STE/ICE-R #89
POSSIBLE PROBLEMS
breaker CB6 where wire 9
REASON FOR QUESTION
Connector P2 faulty.
connects?
Connector J2 faulty.
This question eliminates possible
Wire 9 faulty.
problems and determines where
Circuit breaker CB6 faulty.
troubleshooting continues.
Wire 1 faulty.
Run relay faulty.
Wire 3 faulty.
Circuit breaker CB4 faulty.
Wire 40 faulty.
Blackout light switch faulty.
Auxiliary light switch faulty.
Wire 13 faulty.
Go to Step 15 of
Connector J1 faulty.
NO
this fault.
Connector P1 faulty.
Socket(s) faulty.
YES
5
KNOWN INFO
TEST OPTIONS
Bulb(s) OK.
Voltage Test.
Is 24 vdc present at circuit
Connector P2 OK.
STE/ICE-R #89
breaker CB6 where wire 1
Connector J2 OK.
REASON FOR QUESTION
connects?
POSSIBLE PROBLEMS
If 24 vdc is not present, circuit
Wire 9 faulty.
breaker CB6 is faulty.
Circuit breaker CB6 faulty.
Wire 1 faulty.
Run relay faulty.
Wire 3 faulty.
Circuit breaker CB4 faulty.
Wire 40 faulty.
Blackout light switch faulty.
Auxiliary light switch faulty.
Wire 13 faulty.
Replace circuit
Connector J1 faulty.
NO
breaker CB6
Connector P1 faulty.
(Para 8-11)
Socket(s) faulty.
YES
2-104
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