TM 1-1520-238-T-5
8–176
8–94.
CPG VSI EDGE–LIGHTING – DOES NOT LIGHT
8–94
Tools:
Nomenclature
Part Number
Tool Kit, Electrical
SC518099CLA06
Repairer’s
Multimeter, Digital
AN/PSM-45
Personnel Required:
68X
Armament/Electrical Systems Repairer (2)
References:
TM 1-1520-238-T-6
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. Close CPG PRI LT circuit breaker.
Check for 5 VDC between (A326):
J14–B7 and J14–B8.
Is voltage present?
YES
Go to step 3.
NO
Go to step 2.
2. Check for 5 VDC at (A326)TB1–43–D.
Is voltage present?
YES
Repair open wire between
(A326):
J14–B8 and TB1–42–D,
J14–B7 and TB1–43–D.
Go to paragraph 8–91,
or
replace resistor (A326)R25
(TM 1-1520-238-23).
NO
Refer to TM 1-1520-238-T-6 to
troubleshoot CPG edge–lights.
3. Check for 5 VDC between
P126–3 and P126–2.
Is voltage present?
YES
Replace VSI
(TM 1-1520-238-23).
NO
Repair open wire between:
P466–B8 and P126–2,
P466–B7 and P126–3.
Go to paragraph 8–91.
END OF TASK
