TM 1-1520-238-T-5
8–178
8–96.
PILOT AIRSPEED INDICATOR EDGE–LIGHTING – DOES NOT LIGHT
8–96
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–B11 and J14–B12.
Is voltage present?
YES
Go to step 3.
NO
Go to step 2.
2. Check for 5 VDC at
(A326)TB1–43–F.
Is voltage present?
YES
Check for open between (A326):
J14–B12 and TB1–42–F,
J14–B11 and TB1–43–F.
Repair open wire.
Go to paragraph 8–91.
NO
Refer to TM 1-1520-238-T-6 to
troubleshoot CPG edge–lights.
3. Check for 5 VDC between
P385–Y and P385–X.
Is voltage present?
YES
Replace pilot air speed indicator
(TM 1-1520-238-23).
NO
Repair open wire between:
P466–B12 and P385–X,
P466–B11 and P385–Y.
Go to paragraph 8–91.
END OF TASK
