TM 1-1520-238-T-6
9–256
Change 8
9–72.
LT ANTI COL CIRCUIT BREAKER (CB40) – DOES NOT STAY CLOSED
9–72
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 center circuit breaker panel, open LT
ANTI COL circuit breaker (CB40). Check for
short between P100-B16 and ground.
Does short exist?
YES
Repair shorted wire between:
P100-B16 and P457-A16,
(A402)J22-A16 and J1-44,
P1-44 and CB40-2.
Go to paragraph 9–70.
NO
Go to step 2.
2. With P102 detached, check for short between
P100-B18 and ground.
Does short exist?
YES
Repair shorted wire between
P100-B18 and P102-1.
Go to paragraph 9–70.
NO
Go to step 3.
3. With Anti Col Switch (A133)S3 in Off, Red, and
White, check for short between:
P100-B16 and ground,
P100-B18 and ground.
Does short exist?
YES
Replace pilot EXT LT/INTR LT
panel (TM 1-1520-238-23).
NO
Replace anti-collision light
power supply
(TM 1-1520-238-23).
END OF TASK
