TM 1-1520-238-T-6
9–337
9–122. ALL CHANNEL 1 NO. 2 EDGE-LIGHT PANELS – DO NOT LIGHT
9–122
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
Equipment Conditions:
Ref
Condition
TM 1-1520-238-23
Non-transparent barrier
removed
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 5 VDC between (A326):
TB1-31-A and TB1-32-A.
Does open exist?
YES
Go to step 2.
NO
Go to step 3.
2. Check for open between (A326):
TB1-31-A and TB1-31-B,
TB1-31-A and TB1-31-C,
TB1-31-A and TB1-31-D,
TB1-31-A and TB1-31-E,
TB1-31-A and TB1-31-F,
TB1-31-A and TB1-31-G,
TB1-31-A and TB1-31-H,
TB1-31-A and TB1-31-J,
TB1-31-A and TB1-31-K.
Does open exist?
YES
Replace terminal board
(A326)TB1-31
(TM 1-1520-238-23).
NO
Replace terminal board
(A326)TB1-32
(TM 1-1520-238-23).
3. Check for open between:
P109-B and (A326)TB1-31-A,
P109-D and (A326)TB1-32-A.
Does open exist?
YES
Repair open wire.
Go to paragraph 9–113.
NO
Go to step 4.
4. Detach wire ends from (A326):
TB1-31-A and TB1-32-A. Check for short
between:
P109-B and ground,
P109-D and ground.
Does short exist?
YES
Repair shorted wire.
Go to paragraph 9–113.
NO
Replace multi-channel dimming
controller (TM 1-1520-238-23).
END OF TASK
