TM 1-1520-238-T-4
6–99
6–37.
PILOT LOW RPM ROTOR INDICATOR – DOES NOT LIGHT WITH ELECTRICAL POWER
6–37
APPLIED AND ALL POWER PLANTS OFF
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-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. Check for open between P20–X and ground.
Does open exist?
YES
Go to step 2.
NO
Refer to TM 1-1520-238-T-6 to
troubleshoot the pilot
caution/warning system.
2. Check for open between P20–X and P49–18.
Does open exist?
YES
Repair open wire between:
P49–18 and P435–A9,
P482–A3 and P20–X.
(A326):
J7–A9 and TB1–10–D,
TB1–10–E and J18–A3.
Go to paragraph 6–13.
NO
Replace engine out warning unit
(TM 1-1520-238-23).
END OF TASK
