TM 1-1520-238-T-7
Change 5
11–421
11–122. NOE/APRCH SWITCH – DISENGAGES OR STAB POS INDICATORS DO NOT
11–122
INDICATE 25 2
Tools:
Nomenclature
Part Number
Tool Kit, Electrical
SC518099CLA06
Repairer’s
Multimeter, Digital
AN/PSM-45
Supply, Power
6269B
Extractor, Relay
CTJ-RO6
Personnel Required:
68X
Armament/Electrical Systems Repairer
One person to assist
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. Open STAB MAN DC (A76)CB6, STAB AUTO
DC (A76)CB3, STAB AUTO AC (A76)CB2, and
ENG WARN (A76)CB52 circuit breakers.
Detach P1077 from (A329)J1.
Check for open between (A329):
J1–P and XK1–6–A3,
XK1–6–A2 and TB1–3–J.
Does open exist?
YES
Repair open wire.
Go to paragraph 11–88.
NO
Go to step 2.
2. Check for open between (A329)XK1–6–A2 and
(A329)XK1–6–A3.
Does open exist?
YES
Replace AUTO RESET relay
(A329)K1–6
(TM 1-1520-238-23).
NO
Go to step 3.
3. Detach:
P447 from J447,
J170 from (A137)J1.
Check for open between:
P1077–P and P447–A14,
J447–A14 and P170–A1,
P170–B2 and GS420–L.
Does open exist?
YES
Repair open wire.
Go to paragraph 11–88.
NO
Go to step 4.
4. Detach:
P485 from (A323)J7,
P990 from (A638)J2,
P986 from (A637)J2.
Check for open between:
P170–B7 and J447–A11,
P447–A11 and P485–B,
(A323)J7–B and (A323)TB2–2–C,
(A323)TB2–2–F and (A323)J7–C,
(A323)TB2–2–J and (A323)J7–D,
P485–C and P990–S,
P485–D and P986–S.
Does open exist?
YES
Repair open wire.
Go to paragraph 11–88.
NO
Go to step 5.
