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TM 11-5820-890-30-5
5-20. REPLACEMENT OF DECODER CONTROL (6A2). Continued
ITEM
ACTION
REMARKS
INSTALLATION
f.
Decoder control (11)
Connect wiring harness to decoder control
connector J1. Set decoder control in place
in power amplifier case (4).
g. Four corner screws (9),
Using flat tip screwdriver, set in place and
Iockwashers (8), and
tighten.
flat washers (7)
h. Two middle screws (9),
Using flat tip screwdriver, set in place and
Iockwashers (8), flat
tighten.
washers (7), and
insulating washers (6)
NOTE
Three variable resistors on the decoder control may need to be adjusted. Perform operational
check prior to installing cover.
i.
Cover (10)
Inspect for damage to gasket. Replace
cover if damaged.
j. Cover (10)
Set in place on power amplifier. Start
screws. Using torque screwdriver, torque
screws to 8 to 10 in-lb.
5-21. REPLACEMENT OF POWER AMPLIFIER HEAT SINK (6A3).
Tools:
Flat tip screwdriver
Cross tip screwdriver
Torque screwdriver
Round nose pliers
Expendable Supplies:
Sealing compound, grade H
ITEM
ACTION
REMARKS
REMOVAL
a. Power amplifier
Set on work surface with cover side
down. See figure 5-11.
b. Power amplifier heat
Using flat tip screwdriver, fully loosen 12
sink (1)
captive screws securing power amplifier
heat sink to power amplifier case (4).
c. Power amplifier heat
Lift from power amplifier case (4). Do not
sink (1)
strain cables connecting power amplifier
heat sink to power amplifier case. Set
on work surface.
5-36
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