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3-29. REPLACEMENT
Tools:
Soldering kit
Expendable supplies:
Alcohol
References:
TM 11-5820-890-30-5
OF POWER SUPPLY CCA.
3/16-inch nutdriver
Cross tip screwdriver, #0 point
Cotton swabs
Solder
Paragraph 3-25 for removal and installation of test adapter from maintenance group lid.
Figure 3-12 for illustration of power supply circuit card assembly (CCA).
ITEM
ACTION
REMARKS
REMOVAL
a. Wires
b. Four hex nuts (60), lock-
washers (61), flat washers
(62), and screws (66)
c. Four spacer sleeves (64)
d. Power supply CCA (65)
INSTALLATION
e. Wires
f. Power supply CCA (65)
g. Four hex nuts (60), lock-
washers (61), flat washers
(62), and screws (66)
Note positions of all wires soldered to
power supply CCA (65). Using soldering
kit, desolder all wires from CCA.
Using cross tip screwdriver and 3/16-inch
nutdriver, remove and retain four hex nuts,
Iockwashers, flat washers, and screws
securing CCA to power supply mounting
bracket (63). Note orientation of CCA’s
component side with respect to mounting
bracket.
Remove and retain.
Remove and discard.
Using soldering kit, solder all wires to
correct positions on CCA.
Install four retained screws (66) through
replacement CCA and four retained spac-
er sleeves (64). Place CCA with its com-
ponent side in correct orientation on pow-
er supply mounting bracket (63) with
screws inserted through holes in bracket.
Using cross tip screwdriver and 3/16-inch
nutdriver, install and tighten four retained
hex nuts, Iockwashers, and flat washers
on four screws securing CCA to mounting
bracket.
See figure 3-12 (sheet 3).
Before and after soldering,
clean solder joints with
cotton swabs and alcohol.
These were removed in
steps b and c.
These were removed in
step b.
3-99
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