TM 1-1520-238-T-7
11–388
Change 5
11–100. PILOT AND/OR CPG STAB POS INDICATORS – DO NOT INDICATE FULL NOSE UP
11–100
POS (9 2), FULL DOWN (35 2), OR OFF FLAG APPEARS
Tools:
Nomenclature
Part Number
Tool Kit, Electrical
SC518099CLA06
Repairer’s
Multimeter, Digital
AN/PSM-45
Extractor, Relay
CTJ-RO6
Personnel Required:
68X
Armament/Electrical Systems Repairer
One person to assist
References:
TM 1-1520-238-T-6
TM 1-1520-238-23
Equipment Conditions:
Ref
Condition
TM 1-1520-238-23
Access provisions –
L325 door open
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 115 VAC at (A76)P1–37.
Is voltage present?
YES
Go to step 2.
NO
Refer to TM 1-1520-238-T-6 to
troubleshoot circuit protection
system (ac essential bus 1– pilot
station).
2. Open STAB MAN AC (A76)CB7 circuit breaker.
Check for open between:
(A402)J1–37 and T3–1,
(A402)T3–2 and GS9–H,
P962–H and GS–263–A,
P961–H and GS433–E,
P1076–D and GS89–F.
Does open exist?
YES
Repair open wire.
Go to paragraph 11–88.
NO
Go to step 3.
3. Close STAB MAN AC (A76)CB7 circuit breaker.
Detach P441 from (A402)J24.
Check for 26 VAC between (A402):
J24–B20 and J24–B19.
Is voltage present?
YES
Go to step 4.
NO
Repair open wire between
(A402):
T3–3 and TB3–17–N,
TB3–17–S and J24–B19,
T3–5 and TB3–17–T,
TB3–17–W and J24–B20,
TB3–17–Z and GS9–G.
Go to paragraph 11–88, or
replace transformer (A402)T3
(TM 1-1520-238-23).
