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Page Title:
BLACKOUT STOPLIGHTS DO NOT OPERATE - continued |
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 TM 10-3930-673-20-1
19. BLACKOUT STOPLIGHTS DO NOT OPERATE (CONT).
6
KNOWN INFO
TEST OPTIONS
Bulbs OK.
Voltage test.
Is 24 vdc present at run relay
Connector P2 OK.
STE/ICE-R #89.
K1 where wire 1 connects?
Connector J2 OK.
REASON FOR QUESTION
Wire 9 OK.
If 24 vdc is not present, wire 1
Circuit breaker CB6 OK.
faulty.
POSSIBLE PROBLEMS
Wire 1 faulty.
Run relay faulty.
Wire 3 faulty.
Circuit breaker CB4 faulty.
Wire 40 faulty.
Blackout light switch faulty.
Wire 41 faulty.
Brake switch faulty.
Repair wire 1 (Para
NO
Wire 42 faulty.
8-48).
Wire 44 faulty.
Connector J1 faulty.
Connector P1 faulty.
YES
Socket(s) faulty.
7
KNOWN INFO
TEST OPTIONS
Bulbs OK.
Voltage test.
Is 24 vdc present at run relay
Connector P2 OK.
STE/ICE-R #89.
K1 where wire 3 connects?
Connector J2 OK.
REASON FOR QUESTION
Wire 9 OK.
If 24 vdc is not present, run relay
Circuit breaker CB6 OK.
K1 faulty.
Wire 1 OK.
POSSIBLE PROBLEMS
Run relay faulty.
Wire 3 faulty.
Circuit breaker CB4 faulty.
Wire 40 faulty.
Blackout light switch faulty.
Wire 41 faulty.
Brake switch faulty.
Replace run relay
NO
Wire 42 faulty.
K1 (Para 8-23).
Wire 44 faulty.
Connector J1 faulty.
Connector P1 faulty.
YES
Socket(s) faulty.
2-350
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