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TM 9-2320-364-20-4
2-3114
4.
Repair wire 1785 (see
schematic Fig 2-75) or
notify DS Mainte-
nance. 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 is OK.
Circuit breaker CB27 is OK.
Wire 1785 from CB27 to
connector MC136 terminal A
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
measured, wire 1785 is faulty.
Are 10 to 14 vdc measured
on wire 1785 at MC136
terminal A?
3. LOSS OF INTERFACE POWER 12 VDC (CONT).
WARNING
Read WARNING
on Page 2-3115
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