TM 1-1520-238-T-6
9–770
9–408. PILOT RESET SWITCH – DOES NOT RESET STABILATOR AUDIO WARNING
9–408
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 1-1520-238-T-7
Equipment Conditions:
Ref
Condition
TM 1-1520-238-23
Access provisions –
L200 panel removed;
L325, T290R and
T290L doors opened
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 28 VDC at P1077-D.
Is voltage present?
YES
Go to step 2.
NO
Refer to TM 1-1520-238-T-7 to
troubleshoot stabilator.
2. Check for open between:
J993-F and ground,
J993-E and P429-B8,
P431-A20 and P1077-H,
P1077-t and ground,
(A402)J23-B8 and (A402)TB2-26/27-P,
(A402)TB2-26/27-B and (A402)TB2-26/27-A,
(A402)TB2-26/27-G and (A402)J27-A20,
(A329)J1-H and (A329)XK1-6-X2,
(A329)J1-N and (A329)XK1-6-B1.
Does open exist?
YES
Repair open wire.
Go to paragraph 9–395.
NO
Go to step 3.
3. Check for open between (A329):
XK1-6-X2 and XK1-6-X1.
Does open exist?
YES
Replace relay (A329)K1-6
(TM 1-1520-238-23).
NO
Go to step 4.
4. With positive meter lead at (A402):
TB2-26/27-G, check for open between
TB2-26/27-G and TB2-26/27-L.
Does open exist?
YES
Replace terminal board
(A402)TB2-26/27
(TM 1-1520-238-23).
NO
Go to step 5.
5. With pilot stabilator reset button pressed, check
for open between (A641):
P1-E and P1-F.
Does open exist?
YES
Replace pilot stabilator manual
control panel reset switch
(TM 1-1520-238-23).
NO
Go to step 6.
