TM 1-1520-238-T-5
8–151
8–79.
CPG ENG–RTR RPM% INDICATOR – DOES NOT INDICATE ENGINE 1 NP
8–79
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
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. Detach wire ends at (A326):
TB1–3–H and TB1–3–J.
Check for short between:
P73–22 and P73–23,
P73–21 and P73–22,
P73–21 and P73–23.
Does short exist?
YES
Repair shorted wire between:
P73–22 and P405–A2,
P73–23 and P405–A1,
(A326):
J3–A2 and TB1–3–H,
J3–A1 and TB1–3–J.
Go to paragraph 8–10.
NO
Go to step 2.
2. Check for open between:
P73–22 and (A326)TB1–3–H,
P73–23 and (A326)TB1–3–J.
Does open exist?
YES
Repair open wire.
Go to paragraph 8–10.
NO
Replace CPG ENG–RTR
RPM% indicator
(TM 1-1520-238-23).
END OF TASK
