TM 11591522613
Section III. MAINTENANCE
6-7. Parts Replacement Techniques
b. Make well soldered connections; a care-
lessly soldered joint may create a new trouble,
and is one of the most difficult problems to iso-
The majority of parts comprising the
late. Be careful not to allow drops of solder to
F-1461/VRC are accessible when the top cover
fall into the equipment; this action may cause
is removed. The electronic component assem-
short circuits.
bly (para 6-9) contains the circuit components
for filtering the DC supply. This assembly is to
6-8. Replacement of Indicator Lamp
be replaced when faulty.
__________
WARNING
Refer to figure 6-1 to remove and replace the
Shutdown system power to the
indicator lamp.
F-1461/VRC before starting work. Do
not work on live circuits.
6-9. Removal and Installation of Electronic
Component Assembly
a. Special instructions for the removal and
replacement of the electronic component as-
sembly is in paragraph 6-9. When removing
Refer to figure 6-2 to remove and install the
parts or repairing wiring, tag leads and mark
electronic component assembly.
terminals for positive identification before dis-
connecting any wiring to assure proper recon-
6-10. Disassembly of F-1461/VRC
nection. When wiring is replaced, use wire that
conforms with the original wire size and mark-
ing. Most parts can be reinstalled by remount-
Refer to figure 6-3 to disassemble the filter.
ing them in their original locations with the
original hardware and reconnecting the leads.
6-11. Reassembly of F-1461/VRC
CAUTION
Remove and install components that are
a. Refer to figure 6-3 to reassemble the fil-
soldered with a pencil-type soldering iron
ter.
having a 25-watt maximum capacity. If
the soldering iron must be used with ac
b. Check the cover gasket for distortion or
voltage use an isolating transformer be-
loss of resiliency. Replace a damaged or dead
tween the soldering gun; damaging volt-
gasket.
ages can be induced in the circuits com-
ponents.
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