TM 1-1520-238-T-6
Change 7
9–502.1/(9–502.2 blank)
9–232.1. LSR DET CIRCUIT BREAKER (CB96) – DOES NOT STAY CLOSED
9–232.1
OR 28VDC IS NOT PRESENT AT (A76) J1–AA
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 1-1520-238-T-4
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 LSR DET circuit breaker (CB96) stay
closed?
YES
Go to step 4.
NO
Go to step 2.
2. Open CB96. Check for short between
(A76) J1-AA and ground.
Does short exist?
YES
Go to step 3.
NO
Refer to TM 11-1520-238-23-2
to troubleshoot laser detecting
set.
3. Detach wire at CB96-2. Check for short between
(A76) J1-AA and ground.
Does short exist?
YES
Repair shorted between CB96-2
and (A76) J1-AA
(TM 55-1500-323-24).
Go to paragraph 9–220.
NO
Replace LSR DET circuit
breaker (CB96)
(TM 1-1520-238-23).
4. Check for open between:
CB96-1 and CB59-1,
CB96-2 and (A76) J1-AA.
Does open exist?
YES
Repair open wire
(TM 55-1500-323-24).
Go to paragraph 9–220.
NO
Replace LSR DET circuit
breaker (CB96)
(TM 1-1520-238-23).
END OF TASK
