TM 1-1520-238-T-6
9–426
9–176. AWS AWS AC CIRCUIT BREAKER (CB11) – DOES NOT STAY CLOSED OR
9–176
CONTINUITY DOES NOT EXIST BETWEEN (A77): J4-L, J2-12, J2-19
Tools:
Nomenclature
Part Number
Tool Kit, Electrical
SC518099CLA06
Repairer’s
Multimeter, Digital
AN/PSM-45
Personnel Required:
68X
Armament/Electrical Systems Repairer
One person to assist
References:
TM 1-1520-238-23
TM 9-1090-208-23-2
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 ELEC PWR panel, set BATT/EXT PWR
switch to EXT PWR.
Does AWS AWS AC circuit breaker (CB11)
stay closed?
YES
Go to step 4.
NO
Go to step 2.
2. Open CB11. Set BATT/EXT PWR switch to OFF.
Check for short between (A77):
J2-12 and ground,
J2-19 and ground.
Does short exist?
YES
Go to step 3.
NO
Refer to TM 9-1090-208-23-2 to
troubleshoot area weapon
system.
3. Detach wire at CB11-2. Check for short between
(A77):
J2-12 and ground,
J2-19 and ground.
Does short exist?
YES
Repair shorted wire.
Go to paragraph 9–172.
NO
Replace AWS AWS AC circuit
breaker (CB11)
(TM 1-1520-238-23).
4. Set BATT/EXT PWR switch to OFF. Check for
open wire between:
(A77)J4-L and CB11-1,
(A77)J2-12 and CB11-2,
(A77)J2-19 and CB11-2.
Does open exist?
YES
Repair shorted wire.
Go to paragraph 9–172.
NO
Replace AWS AWS AC circuit
breaker (CB11)
(TM 1-1520-238-23).
END OF TASK
