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Page Title:
PREVENTIVE MAINTENANCE CHECKS AND SERVICES FOR LOUDSPEAKER (LS-671) |
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|  TM 11-5820-890-10-8
8.2d.
Loudspeaker (LS-671)
PREVENTIVE MAINTENANCE CHECKS AND SERVICES FOR LOUDSPEAKER (LS-671)
Not Fully Mission
Operator
Item to
Item
Capable If:*
Procedure
Check/Service
Nr.
When
Check for cracked or
a.
CONTROLS:
1
Before
broken controls.
During
Check for loose
b.
POWER SWITCH
After
controls.
VOLUME CONTROL
Check for frozen
C.
controls.
Check for missing
d.
controls.
Check for presence.
CABLE:
a.
Before
2
Check for proper
b.
LS-671 Cable
During
installation of cable.
(CX - 13292)
After
Check for tightness
C.
of connectors.
Check for obvious
d.
damage to cable.
Turn LS-671 Power
POWER:
a.
Before
3
Switch to ON.
Turn VAA CB1 to ON.
b.
CB1 (VAA)
Check that VAA DS1
LS-671 Power Switch
C.
lights.
LS-671 Power Indicator
Check that LS-671
d.
Lamp
Power Indicator Lamp
lights.
Check ability to turn RT
LS-671 CONTROL OF RT:
4
Before
a.
OFF/ON from LS-671.
Check control of
b.
RT OFF/ON
LS-671 volume.
Loudspeaker Volume
Check control of
Handset Volume
C.
handset volume when
connected to LS - 671.
*
The Loudspeaker LS-671 is not essential to the operation of the SINCGARS radio with
which it is used. Problems found with the LS-671 during PMCS are corrected or reported to Unit
Maintenance, but they do not result in Not Fully Mission Capable determinations.
8-20
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