TM 1-1520-238-T-5
7–109
7–31.
TAIL WHEEL LOCK PANEL EDGE–LIGHT – IS NOT LIGHTED
7–31
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. Check LT PRI circuit breaker.
Does circuit breaker stay closed?
YES
Go to step 2.
NO
Refer to TM 1-1520-238-T-6 to
troubleshoot pilot edge–lights.
2. On pilot INTR LT panel, turn INST control knob
to full BRT. Check for 5 VDC between
(A331)J1POS and case.
Is voltage present?
YES
Replace pilot TAIL WHEEL lock
panel (TM 1-1520-238-23).
NO
Go to step 3.
3. Check for 5 VDC between (A326):
J6–B8 and J6–B7.
Is voltage present?
YES
Repair open wire between:
(A331)J1POS and J527–A12,
(A331)J1CASE and J527–A13,
P527–A12 and P473–B8,
P527–A13 and P473–B7.
Go to paragraph 7–21.
NO
Go to step 4.
4. Check for 5 VDC at (A326):
TB1–31–K and TB1–32–K.
Is voltage present?
YES
Repair open wire between
(A326):
TB1–31–K and J6–B8,
TB1–32–K and J6–B7.
Go to paragraph 7–21.
NO
Refer to TM 1-1520-238-T-6 to
troubleshoot pilot edge–lights.
END OF TASK
