TM 1-1520-238-T-6
9–603
9–308. EMERG BATT ENG INST CIRCUIT BREAKER (CB31) – DOES NOT STAY CLOSED
9–308
OR CONTINUITY DOES NOT EXIST BETWEEN (A77): J4-C AND J1-8, J4-C AND J1-10
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
Equipment Conditions:
Ref
Condition
TM 1-1520-238-23
Access provisions –
CPG circuit breaker
panel 1 removed
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. Open CB31. Set BATT/EXT PWR switch to OFF.
Check for short between (A77):
J1-8 and ground,
J1-10 and ground.
Does open exist?
YES
Go to step 2.
NO
Go to step 3.
2. Detach wire at CB31-2. Check for short between
(A77):
J1-8 and ground,
J1-10 and ground.
Does open exist?
YES
Repair shorted wire.
Go to paragraph 9–304.
NO
Replace EMERG BATT ENG
INST circuit breaker (CB31)
(TM 1-1520-238-23).
3. Check for open between:
CB31-2 and (A77)J1-8,
CB31-2 and (A77)J1-10.
Does open exist?
YES
Repair open wire.
Go to paragraph 9–304.
NO
Replace EMERG BATT ENG
INST circuit breaker (CB31)
(TM 1-1520-238-23).
END OF TASK
