TM 1-1520-238-T-7
11–285
11–58. CPG COLL LVDT NO-GO CPG COMPARTMENT – APPEARS ON HOD
11–58
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 CPG collective stick to full up or full down.
Detach P686. Check for 10 VAC at P686–39.
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 P686. Detach filter adapter A707.
Check for 10 VAC at A707–39.
Is voltage present?
YES
Replace DASEC
(TM 1-1520-238-23).
NO
Replace filter adapter
(TM 1-1520-238-23).
3. (ACA) Check for short between:
P234–C and ground,
P234–D and ground.
Does short exist?
YES
Repair shorted wire between:
P234–D and J447–B17,
P234–C and J447–B18,
P447–B17 and P686–38,
P447–B18 and P686–39.
Go to paragraph 11–23.
NO
Go to step 5.
4. (ACB) Check for short between:
J234–3 and ground,
J234–4 and ground.
Does short exist?
YES
Repair shorted wire between:
J234–4 and J447–B17,
J234–3 and J447–B18,
P447–B17 and P686–38,
P447–B18 and P686–39.
Go to paragraph 11–23.
NO
Go to step 6.
5. (ACA) Check for open between:
P234–C and P686–39,
P234–D and P686–38.
Does open exist?
YES
Repair open wire.
Go to paragraph 11–23.
NO
Go to step 7.
6. (ACB) Check for open between:
J234–3 and P686–39,
J234–4 and P686–38.
Does open exist?
YES
Repair open wire.
Go to paragraph 11–23.
NO
Go to step 9 .
7. (ACA) Attach P686. Check for 26 VAC at
P234–A.
Is voltage present?
YES
Go to step 8.
NO
Go to step 11.
