TM 1-1520-238-T-7
11–283
11–57.
DASE COMPUTER NO-GO AFT AVIONICS BAY – APPEARS ON HOD
11–57
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 11-1520-238-23-2
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 28 VDC at:
P682–73,
P682–75,
P682–77,
P682–79.
Is voltage present?
YES
Go to step 4.
NO
Go to step 2.
2. Check for open between all combinations of the
following:
P682–73,
P682–75,
P682–77,
P682–79,
P682–121.
Does open exist?
YES
Repair open wire between:
P682 SP5 and P682–73,
P682 SP5 and P682–75,
P682 SP5 and P682–77,
P682 SP5 and P682–79.
Go to paragraph 11–23.
NO
(ACA) Replace DASEC
(TM 1-1520-238-23).
(ACB) Go to step 3.
3. (ACB) Detach filter adapter A705. Check for
open through pins:
A705–73,
A705–75,
A705–77,
A705–79,
A705–121.
Does open exist?
YES
Replace filter adapter
(TM 1-1520-238-23).
NO
Replace DASEC
(TM 1-1520-238-23).
4. Detach P750. Check for short between:
P688–83 and ground,
P688–82 and ground.
Does short exist?
YES
Repair shorted wire between:
P688–83 and P459–A15,
P688–82 and P459–A16,
J459–A15 and J912–B18,
J459–A16 and J912–B19,
P912–B18 and P750–L,
P912–B19 and P750–M.
Go to paragraph 11–23.
NO
Go to step 5.
