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TM 9-2320-364-20-2
2-1170
3. CTIS, LHS, CRANE AND HEATER DO NOT OPERATE (CONT).
22 to 28 vdc register on
24 vdc voltmeter indicating
wire 1280 is connected to
22 to 28 vdc.
22 to 28 vdc present to 24 vdc
circuit breakers CB15, 16, 17,
18, 19 and 21.
Wire 1280 OK.
Jumperwire between circuit
breakers CB19 and CB21 OK.
KNOWN INFO
POSSIBLE PROBLEMS
TEST OPTIONS
REASON FOR QUESTION
Verify repair.
If heater operates, fault is
corrected.
YES
NO
Fault not corrected.
Notify DS
Maintenance.
3.
Do 24 vdc circuits operate?
Fault corrected.
2.
Replace wire 1280
(see schematic
Fig 2-25) or notify DS
Maintenance.
Verify repair, go to
Step 3 of this Fault.
YES
NO
22 to 28 vdc register on
24 vdc voltmeter indicating
wire 1280 is connected to
22 to 28 vdc.
12 vdc circuits operate
indicating 24 vdc present on
wire 1072.
22 to 28 vdc present to CB21.
Wire 1280 between circuit
breakers CB19 and CB21
faulty.
KNOWN INFO
POSSIBLE PROBLEMS
TEST OPTIONS
REASON FOR QUESTION
Voltage test.
STE/ICE-R #89.
If 22 to 28 vdc are not present,
wire 1280 is faulty.
WARNING
Are there 22 to 28 vdc
measured on wire 1280 at
circuit breaker CB19?
Read WARNING
on Page 2-1171
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