TM 1-1520-238-T-6
9–786
9–416. AUDIO AT RIGHT WING ICS – IS NOT PRESENT AND SAFE LIGHT ON PILOT
9–416
ARM/SAFE INDICATOR IS NOT LIGHTED WITH SQUAT SWITCH FIXTURE INSTALLED
Tools:
Nomenclature
Part Number
Tool Kit, Electrical
SC518099CLA06
Repairer’s
Multimeter, Digital
AN/PSM-45
Personnel Required:
68X
Armament/Electrical Systems Repairer
One person to assist
References:
TM 1-1520-238-23
TM 11-1520-238-23-2
Equipment Conditions:
Ref
Condition
TM 1-1520-238-23
Electrical power
distribution box aft fan and
relay cover 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. Check for 28VDC at (A402)TB2-15-F.
Does voltage exist?
YES
Go to step 3.
NO
Go to step 2.
2. Check for 28VDC at (A67)J1-S.
Does voltage exist?
YES
Repair open wire between
P463-S and (A402)TB2-15-F.
Go to paragraph 9–411.
NO
Refer to TM 11-1520-238-23-2
to troubleshoot IFF system.
3. Identify and detach wires at S350 SP1 and S350
SP2. Check for open between wire end at S350
SP2 and (A402)TB2-15-B.
Does open exist?
YES
Repair open wire.
Go to paragraph 9–411.
NO
Go to step 4.
4. Check for open between wire end S350 SP1 and
(A402)TB-2-15-M.
Does open exist?
YES
Repair open wire.
Go to paragraph 9–411.
NO
Replace squat switch (S350)
(TM 1-1520-238-23).
END OF TASK
