TM 1-1520-238-T-6
9–542
9–261. CDU CIRCUIT BREAKER (CB6) – DOES NOT STAY CLOSED
9–261
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
TM 11-1520-238-23-2
Equipment Conditions:
Ref
Condition
Paragraph 9–148
All dc essential bus 2 pilot
station circuit breakers
open
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. Check for short between P1-J and ground.
Does short exist?
YES
Go to step 2.
NO
Refer to TM 11-1520-238-23-2
to troubleshoot navigation
instruments.
2. Detach wire at CB6-2. Check for short between
P1-J and ground.
Does short exist?
YES
Repair shorted wire between
CB6-2 and P1-J.
Go to paragraph 9–249.
NO
Replace CDU circuit breaker
(CB6) (TM 1-1520-238-23).
END OF TASK
