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TM 11-5820-890-30-5
14-33. REPLACEMENT OF CR2 DIODE ON K1 RELAY.
Tools:
Flat tip screwdriver
Soldering kit
Torque screwdriver
Soldering aid
Flat tip bit
Needle nose
Flush cutting
Expendable Supplies:
Solder
Alcohol
Heat sink
pliers
Lead measuring and forming tool
pliers
Cotton swabs
References:
Paragraph 14-17 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.
Diode (9) leads
d.
Diode (9)
INSTALLATION
e.
Diode (9)
f.
Diode (9) leads
g.
Relay (10)
h. Heat sink
assembly
Remove and retain heat sink assembly
Refer to paragraph 14-17
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.
Use soldering kit, soldering aid, and heat
sink. Tag location of the diode leads
soldered to pins on the K1 relay (10).
Unsolder each lead from the relay.
Remove and discard defective diode.
Obtain replacement diode.
Use lead measuring and forming tool.
Measure the center-to-center dimension
between mounting leads of component
at replacement site and form the leads
to this dimension.
Use soldering kit, soldering aid, heat
sink, needle nose pliers, and flush
cutting pliers. Install diode, solder
leads to tagged pins on relay (10),
trim the leads, and remove the tags.
Install retained heat sink assembly on
power supply adapter chassis (1).
Before and after soldering,
clean diode leads and relay
pins with alcohol and
cotton swabs. Ensure that
cathode lead is connected
to pin X1 on the relay.
Refer to paragraph 14-17
for heat sink installation.
14-53
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