TM 1-1520-238-T-6
9–612
9–315. OPEN – EXISTS BETWEEN P1-1 AND P1-8 OR A SHORT EXISTS BETWEEN
9–315
P1-1 AND GROUND
Tools:
Nomenclature
Part Number
Tool Kit, Electrical
SC518099CLA06
Repairer’s
Multimeter, Digital
AN/PSM-45
Personnel Required:
68X
Armament/Electrical Systems Repairer
References:
TM 1-1520-238-23
WARNING
Turn off power before detaching or
attaching wires and connectors. High
current 28 VDC or 115 VAC is present.
Failure to do so could result in death or
serious injury.
1. On pilot forward circuit breaker panel, close
MISSION RDR JAM DC circuit breaker (CB72).
Check for short between P1-8 and ground.
Does short exist?
YES
Go to step 2.
NO
Go to step 4.
2. Detach wire at CB72-1. Check for short between
P1-8 and ground.
Does short exist?
YES
Repair shorted wire between
P1-8 and CB72-1.
Go to paragraph 9–312.
NO
Go to step 3.
3. Detach wire at CB72-2. Check for short between
P1-1 and ground.
Does short exist?
YES
Repair shorted wire between
P1-1 and CB72-2.
Go to paragraph 9–312.
NO
Replace MISSION RDR JAM
DC circuit breaker (CB72)
(TM 1-1520-238-23).
4. Check for open between:
CB72-1 and P1-8,
CB72-2 and P1-1.
Does open exist?
YES
Repair open wire.
Go to paragraph 9–312.
NO
Replace MISSION RDR JAM
DC circuit breaker (CB72)
(TM 1-1520-238-23).
END OF TASK
