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TM 9-2320-364-20-4
2-3112
3.
Replace circuit
breaker CB27
(Para 21-15). Verify
repair, go to Step 7 of
this Fault.
YES
NO
12 vdc present at polarity
protection terminal B.
Wire 1785 from 12 vdc polarity
protection to MC136 is OK.
Wire 1785 from MC136 to
CB27 OK.
Circuit breaker CB27 faulty.
Wire 1785 from CB27 to
MC136 faulty.
Wire 1785 from MC136 to
MC129 faulty.
Wire 1785 from MC136 to
MC130 faulty.
KNOWN INFO
POSSIBLE PROBLEMS
TEST OPTIONS
REASON FOR QUESTION
Voltage test.
STE/ICE-R #89.
If 10 to 14 vdc are not present,
circuit breaker CB27 is faulty.
Are 10 to 14 vdc measured on
wire 1785 at circuit breaker
CB27?
3. LOSS OF INTERFACE POWER 12 VDC (CONT).
WARNING
Read WARNING
on Page 2-3113
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