13-30.
Tools:
TM 11-5820-890-30-4
REPLACEMENT OF TWO-WIRE TRANSIENT PROTECTION CIRCUIT CARD
ASSEMBLY (8A2A1).
Cross tip screwdriver
Torque screwdriver
Flat tip screwdriver
Soldering kit
Expendable Supplies:
Cotton swabs
Alcohol
Solder
References:
Paragraph 13-17 for removal and installation of the heat sink assembly (8A1).
ITEM
ACTION
REMARKS
REMOVAL
a.
Heat sink assembly (2)
b.
Power supply adapter
chassis (1)
c.
Two-wire transient
protection circuit (2)
wires
d.
Four screws, flat
washers, and
Iockwashers (3)
e.
Two-wire transient
protection circuit (2)
INSTALLATION
f.
g.
h.
i.
Two-wire transient
protection circuit (2)
Four screws, flat
washers, and
Iockwashers (3)
Two-wire transient
protection circuit (2)
wires
assembly (2)
Remove and retain heat sink assembly
Refer to paragraph 13-17
from power supply adapter chassis (1).
for heat sink removal.
See figure 13-2.
Set upside down on work surface with
front toward you. See figure 13-6.
Tag location of all wires soldered to
Al circuit near terminals E1 and E2.
Use soldering kit. Desolder each wire
from the circuit.
Use cross tip screwdriver. Remove and
inspect four screws and flat washers
securing the circuit to the chassis. If
damaged, obtain replacement. Discard
Iockwashers.
Remove defective circuit and send it to
supply for disposition.
Obtain replacement circuit and four
Iockwashers.
Use cross tip screwdriver. Install and
tighten four screws, flat washers, and
replacement Iockwashers securing the
circuit to the chassis.
Use soldering kit. Solder tagged wires
Before and after soldering,
to terminals on the circuit, and remove
clean wires and terminals
wire tags.
with alcohol and cotton
swabs.
Install retained heat sink assembly on
Refer to paragraph 13-17
power supply adapter chassis (1).
for heat sink installation.
13-49
