TM 11-5820-890-10-3
TROUBLESHOOTING PROCEDURES
RADIO.
Power source
ITEM
PROCEDURE
manpack radio
a
Set FCTN to operating position.
b
Press BATT Display must show 11 or less.
•
If display shows 11 or more, replace battery *
vehicular radio
c
Set CB1 to ON.
d
Set FCTN to operating position.
e
Turn power light lens of mounting adapter full left
(counterclockwise), and make sure it is lit.
•
If power light does not light, get unit maintenance to
check system.
*
During combat operations or critical mission performance only. For training, use your battery until it is
completely drained of usable power.
RADIO
Self-test
ITEM
PROCEDURE
manpack,
a.
Turn KY-57 OFF.
vehicular
b.
Set FCTN to TST.
radio
c.
Watch as displays cycle in the following sequence:
•
If any display is not as shown, or if a low level rushing is not
heard:
(1)
Rerun self-test
(2)
Set FCTN to OFF and rerun self-test
(3)
Disconnect all cables from RT, go to[ OF-, and rerun
self-test.
(4)
If result is "Good", perform PMCS on cables reconnect
them and rerun self-test.
(5)
If fail message now appears, contact unit maintenance.
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