TM 1-1520-238-T-7
11323
1180.
DIR ACTUATOR NO-GO APPEARS ON HOD
1180
Tools:
Nomenclature
Part Number
Tool Kit, Electrical
SC518099CLA06
Repairers
Multimeter, Digital
AN/PSM-45
Personnel Required:
68X
Armament/Electrical Systems Repairer
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. Check for 1800 to 2200 ohms between P68855
and P68856.
Is resistance present?
YES
Go to step 3.
NO
Go to step 2.
2. Check for open between:
P2244 and P68856,
P2245 and P68855.
Does open exist?
YES
Repair open wire.
Go to paragraph 1123.
NO
Replace directional
servocylinder
(TM 1-1520-238-23).
3. Check for 90 to 100 ohms between:
(ACA) P683111 and P493B13.
(ACB) P683111 and ground.
Is resistance present?
YES
Go to step 5.
NO
Go to step 4.
4. Check for open between:
P683111 and P2242.
(ACA) P2249 and P493B13.
(ACB) P2249 and ground.
Does open exist?
YES
Repair open wire.
Go to paragraph 1123.
NO
Replace directional
servocylinder
(TM 1-1520-238-23).
5. Check for 90 to 100 ohms between P683105
and P683106.
Is resistance present?
YES
Go to step 7.
NO
Go to step 6.
6. Check for open between:
P683105 and P22411,
P683106 and P22410.
Does open exist?
YES
Repair open wire.
Go to paragraph 1123.
NO
Replace directional
servocylinder
(TM 1-1520-238-23).
7. Check for 364 to 424 ohms between P68827
and P68828.
Is resistance present?
YES
Go to step 9.
NO
Go to step 8.
