TM 11-5820-890-30-4
4-44. REPLACEMENT OF POWER SUPPLY CHASSIS.
Tools:
Flat tip screwdriver
Cross tip screwdriver
NOTE:
This procedure is done only if wiring to or connectors J7, J8 or J1 are damaged.
References:
Paragraph 3-24 for repair instructions.
Paragraph 3-25 for replacement of threaded screw inserts.
ITEM
ACTION
REMARKS
REMOVAL
a. 15 captive screws (1)
b. Access cover (2)
c. Eight screws (4) and flat
washers (5)
d. Three screws (7), flat
washers (5), and cable
clamps (8)
e. Connector P3 (2)
f. Connector P2 (1)
g. 12 captive screws (13)
h. Access covers (11 and 12)
i.
17 captive screws
j.
Power supply (1)
Using flat tip screwdriver, fully loosen 15
captive screws (1) securing access cover
(2) to audio amplifier chassis (3).
Remove and retain.
Using cross tip screwdriver, remove and
retain eight screws (4) and flat washers
(5) securing audio amplifier CCA (6) to
audio amplifier chassis (3).
Using cross tip screwdriver, remove and
retain three screws (7), flat washers (5),
and cable clamps (8) securing audio
amplifier CCA (6) and cables to audio
amplifier chassis (3).
Loosen two jackscrews and disconnect
connector P3 (2) from CCA connector J1.
Loosen two jackscrews and disconnect
connector P2 (1) from CCA connector J2.
Using flat tip screwdriver, fully loosen 12
captive screws (13) securing access
covers (11 and 12) to power control
chassis (10).
Remove and retain.
Using flat tip screwdriver, fully loosen 17
captive screws securing power supply (1)
to power supply chassis.
Place power supply on its fins. Using
soldering kit, tag six wires on TB1. Using
flat tip screwdriver, remove and retain six
screws securing wires to TB1. Remove and
See figure 4-5.
See figure 4-5.
See figure 4-6.
See figure 4-5.
See figure 4-4.
retain power supply.
4-150
