TM 1-1520-238-T-6
9358
9134. CPG PRI LT CIRCUIT BREAKER (CB14) DOES NOT STAY CLOSED
9134
Tools:
Nomenclature
Part Number
Tool Kit, Electrical
SC518099CLA06
Repairers
Multimeter, Digital
AN/PSM-45
Personnel Required:
68X
Armament/Electrical Systems Repairer
One person to assist
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. Detach P766. With external power applied, close
LT PRI circuit breaker (CB14). Set BATT/EXT
PWR switch to EXT PWR.
Does LT PRI circuit breaker (CB14) stay
closed?
YES
Go to step 2.
NO
Go to paragraph 9199 to
troubleshoot circuit protection
system (ac essential bus 2
CPG station).
2. Detach P766 and P110. Check for short
between:
(AAZ) P766-9 and ground,
(AAC) P110-KK and ground,
P110-JJ and ground.
Does short exist?
YES
Repair shorted wire.
Go to paragraph 9132.
NO
Replace multi-channel dimming
controller (TM 1-1520-238-23).
END OF TASK