TM 1-1520-238-T-6
9–545
9–262. 28 VDC – IS NOT PRESENT AT P769-A AND P769-J (cont)
9–262
18. Detach wire at CB4-1. Check for short between
(A77)J4-J and ground.
Does short exist?
YES
Repair shorted wire between
(A77)J4-J and CB4-1.
Go to paragraph 9–249.
NO
Go to step 19.
19. Check for short between CB4-1 and ground.
Does short exist?
YES
Replace FC FCC DC circuit
breaker (CB4)
(TM 1-1520-238-23).
NO
Go to step 20.
20. Attach CB4 wire. Detach wire at CB12-1. Check
for short between (A77)J4-J and ground.
Does short exist?
YES
Repair shorted wire between
CB4-1 and CB12-1.
Go to paragraph 9–249.
NO
Go to step 21.
21. Check for short between CB12-1.
Does short exist?
YES
Replace AWS AWS DC circuit
breaker (CB12)
(TM 1-1520-238-23).
NO
Go to step 22.
22. Attach CB12 wire. Detach wire at CB17-1.
Check for short between (A77)J4-J and ground.
Does short exist?
YES
Repair shorted wire between
CB12-1 and CB17-1.
Go to paragraph 9–249.
NO
Replace MSL DC ELEC circuit
breaker (CB17)
(TM 1-1520-238-23).
END OF TASK
