TM 1-1520-238-T-5
8–118
8–50.
CPG SDD PANEL NG% RPM DIGITAL READOUT – DOES NOT INDICATE 0% TO .5%
8–50
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 1-1520-238-23
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 pilot NG RPM% indicator.
Are digital readouts within .5%?
YES
Go to step 2.
NO
Go to paragraph 8–34.
2. With pilot and CPG ENG INST circuit breakers
closed check CPG SDD panel for 0 to 5 VDC at
P75–26 and P75–27.
Is voltage present?
YES
Replace SDD panel
(TM 1-1520-238-23).
NO
Replace pilot NG RPM%
indicator (TM 1-1520-238-23).
END OF TASK
