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TM 11-5820-890-30-5
4-71. REPLACEMENT OF TERMINAL BLOCK TB1.
Tools:
Cross tip screwdriver
Torque screwdriver
Flat tip screwdriver
References:
Paragraph 4-51 for removal and installation of power supply.
ITEM
ACTION
REMARKS
REMOVAL
a. Mounting adapter
b. 20 captive screws
c. Screw (9) and
flat washer
d. Screw (10)
e. Heatsink assembly
f. Power supply (13)
g, Wires
(8)
(11)
h, Terminal block
INSTALLATION
i.
Terminal block
TB1 (17)
TB1 (17)
j.
Wires
k. Power supply (13)
Set on work surface with back toward
you.
Using flat tip screwdriver, fully loosen 20
captive screws securing heatsink assem-
bly (11) to power supply cover (17).
Using cross tip screwdriver, remove and
retain screw (9) and flat washer securing
heatsink assembly (11) to audio amplifier
chassis (3).
Using flat tip screwdriver, remove and
retain screw (10) securing heatsink as-
sembly (11) to audio amplifier chassis (3),
Lay heatsink assembly (11) on its fins.
Remove and retain
Tag wires on bottom, of terminal block
TB1 (17). Using flat tip screwdriver,
remove and retain eight screws securing
tagged wires to terminal block TB1 (17).
Using cross tip screwdriver, remove and
retain four screws (18) and flat washers
securing defective terminal block TB1 (17)
to heatsink assembly (1). Remove and
discard terminal block TB1.
Using cross tip screwdriver, install four
retained screws (18) and flat washers
securing replacement terminal block TB1
to heatsink assembly (1).
Using flat tip screwdriver, install eight
retained screws securing tagged wires
to bottom of terminal
Remove wire tags.
Install retained power
block TB1 (17).
supply (13).
See figure 4-14.
CAUTION
Carefully lay on fins to
ensure casting does not
rest on components inside
power supply cover.
Refer to paragraph 4-51
for removal procedures.
See figure 4-22.
See figure 4-22.
These were removed in
step h.
These were removed in
step g.
See figure 4-14.
Refer to paragraph 4-51
for installation procedures.
4-189
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