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TM 9-2320-364-20-4
2-3132
6.
Repair wire 1784 (see
schematic Fig 2-76) or
notify DS Mainte-
nance. Verify repair,
go to Step 7 of this
Fault.
YES
NO
24 vdc present at polarity
protection terminal B.
Wire 1784 from 24 vdc polarity
protection to MC136 is OK.
Wire 1784 from MC136 to
CB28 is OK.
Circuit breaker CB28 is OK.
Wire 1784 from CB28 to
MC136 is OK.
Wire 1784 from MC136 to
MC129 is OK.
Wire 1784 from connector
MC136 terminal C to connector
MC130 terminal P faulty.
KNOWN INFO
POSSIBLE PROBLEMS
TEST OPTIONS
REASON FOR QUESTION
Voltage test.
STE/ICE-R #89.
If 22 to 28 vdc are not
measured, wire 1784 is faulty.
Are 22 to 28 vdc measured
on wire 1784 at MC130
terminal P?
4. LOSS OF INTERFACE POWER 24 VDC (CONT).
WARNING
Read WARNING
on Page 2-3133
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