TM 1-1520-238-T-7
11–335
11–85. PILOT COLL LVDT NO-GO PLT COMPARTMENT – APPEARS ON HOD
11–85
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
Equipment Conditions:
Ref
Condition
TM 1-1520-238-23
Access provisions –
R295 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. Place pilot collective stick to full up or full down.
Check for 10 VAC at P688–21.
Is voltage present?
YES
(ACA) Replace DASEC
(TM 1-1520-238-23).
(ACB) Go to step 2.
NO
(ACA) Go to step 3.
(ACB) Go to step 4.
2. (ACB) Attach P688. Detach filter adapter A708.
Check for 10 VAC at A708–21.
Is voltage present?
YES
Replace DASEC
(TM 1-1520-238-23).
NO
Replace filter adapter
(TM 1-1520-238-23).
3. (ACA) Detach P688. Check for short between:
P230–C and ground,
P230–D and ground.
Does short exist?
YES
Repair shorted wire between:
P230–D and J459–B14,
P230–C and J459–B15,
P459–B14 and P688–20,
P459–B15 and P688–21.
Go to paragraph 11–23.
NO
Go to step 5.
4. (ACB) Check for short between:
J230–3 and ground,
J230–4 and ground.
Does short exist?
YES
Repair shorted wire between:
J230–4 and J459–B14,
J230–3 and J459–B15,
P459–B14 and P688–20,
P459–B15 and P688–21.
Go to paragraph 11–23.
NO
Go to step 6.
5. (ACA) Check for open between:
P230–C and P688–21,
P230–D and P688–20.
Does open exist?
YES
Repair open wire.
Go to paragraph 11–23.
NO
Go to step 7.
6. (ACB) Check for open between:
J230–3 and P688–21,
J230–4 and P688–20.
Does open exist?
YES
Repair open wire.
Go to paragraph 11–23.
NO
Go to step 9.
7. (ACA) Attach P688. Check for 26 VAC at
P230–A.
Is voltage present?
YES
Go to step 8.
NO
Go to step 11.
