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Page Title:
PREVENTIVE MAINTENANCE CHECKS AND SERVICES FOR SINCGARS RADIOS USED WITH INTERCOMMUNICATIONS SET |
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|  TM 11-5820-890-10-8
PREVENTIVE MAINTENANCE CHECKS AND SERVICES FOR
SINCGARS RADIOS USED WITH INTERCOMMUNICATIONS SET
(AN/VIC-1)
item
Item to
Operator
Not Fully Mission
Nr.
When
Check/Service
Procedure
Capable If:
1
Before
CONTROLS:
During
MAIN PWR
a.
Check for cracked
After
POWER ON/OFF
or broken controls.
INT ACCENT
b.
Check for loose controls.
c.
RADIO TRANS
Check for frozen controls.
MONITOR SWITCHES
d.
Check for missing control
knobs.
2
Before
CABLES:
During
a.
Check for missing cables.
After
b.
Check for proper
installation of cables.
c.
Check for tightness
of connectors.
d.
Check for obvious
damage to cables.
3
Before
POWER:
a.
Ensure VAA CB1 is ON.
b.
Ensure VIC AM - 1780
circuit breaker is ON.
c.
Turn Power Switch to
NORM.
d.
Power lamp should light.
4
Before
COMM CHECK:
During
lntercomm
a.
Check ability to talk on
a.
Intercom does
After
Radio "A"
Intercom from all crew
not function*
Radio "B"
control boxes at ALL, INT
ONLY, and A; CDR only at
position C.
b.
Check ability to talk and
listen to Radio "A" from all
crew control boxes at ALL
and A.
c.
Check ability to listen to
Radio "B" from all crew
control boxes at ALL and
C.
*
Although the SINCGARS radios of a combat vehicle equipped with the VIC intercom system
can operate without the VIC, many combat vehicles require the operational use of the intercom for
internal vehicle command and control. Whether your VIC system being inoperative constitutes a
Non -Mission Ready status will vary with combat vehicle type.
8-19
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