User Manual

62
SYMPTOM CAUSE SOLUTION
Radio will not
transmit.
Radio may be out of
coverage area or may be
overheated.
Return to coverage area if
possible. If overheated, let
radio cool before retrying
transmission. Report this
failure to an authorized
technician.
Radio will not
transmit
(transmit
indicator does
not flash).
Radio may be experiencing
low voltage.
The M-803 will cease to
transmit if the voltage
drops below 8.5 volts.
Have the battery checked
by an authorized
technician.
Radio powers
off for no
apparent
reason.
Radio may be experiencing
very low voltage.
The M-803 automatically
powers down when voltage
drops below +5.0 volts.
Have the battery checked
by an authorized
technician.
“Warning: No
MRU”
Message.
Radio control head is
unable to communicate
with mobile radio unit
(radio transceiver).
Have the radio connections
checked by an authorized
technician.
Control head
randomly
changes
display.
In multiple control head
configurations, another
user is operating the radio
from another control head.
None
Encrypted calls
cannot be
made.
Not authorized to use. Contact system
administrator to request
encryption privileges.
Encrypted calls
cannot be
made.
User not logged in. Log in (refer to Section
3.11.1).
V-TAC Menu
does not
display.
Unit not set up as a V-
TAC.
VRB is not responding.
None
Check power connection.
Ensure front panel (VRB-
VRM) data cable is
connected. Report the
problem to a technician.