TM 1-1520-238-T-6
9–622
9–322. CONTINUITY BETWEEN (A77): J2-39 AND J2-23 – DOES NOT EXIST OR SHORT
9–322
EXISTS BETWEEN (A77)J2-23 AND GROUND
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
Equipment Conditions:
Ref
Condition
Paragraph 9–149
Pilot circuit breaker panel
accessing completed
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 open between (A77):
J2-39 and J2-23.
Does open exist?
YES
Go to step 2.
NO
Go to step 4.
2. Check for open between (A77)J2-39 and
CB27-1.
Does open exist?
YES
Repair open wire between
CB25-1 and CB27-1.
Go to paragraph 9–317.
NO
Go to step 3.
3. Check for open between (A77)J2-23 and
CB27-2.
Does open exist?
YES
Repair open wire.
Go to paragraph 9–317.
NO
Replace MSL ARM circuit
breaker (CB27)
(TM 1-1520-238-23).
4. Detach wire at CB27-2. Check for short between
(A77)J2-23 and ground.
Does short exist?
YES
Repair shorted wire between
(A77)J2-23 and CB27-2.
Go to paragraph 9–317.
NO
Replace MSL ARM circuit
breaker (CB27)
(TM 1-1520-238-23).
END OF TASK
