Tyco Electronics M7300 Series Manuel D’Utilisation
MM-014716-001
94
12 BASIC TROUBLESHOOTING
If the radio is not operating properly, check Table 12-1 for likely causes. For additional assistance,
contact a qualified service technician.
contact a qualified service technician.
Table 12-1: Basic Troubleshooting
SYMPTOM
CAUSE
SOLUTION
Radio will not turn on.
No power.
Test the connection to the vehicle power
supply.
supply.
Radio will not turn off.
If in multiple control head
configuration, one of the attached
control heads is still powered up.
configuration, one of the attached
control heads is still powered up.
Power off all control heads.
Radio will not register
or does not receive
provisioning data.
or does not receive
provisioning data.
Bad logon credentials.
Check logon and password.
No audio.
Speaker volume is muted.
Increase the volume level.
Poor audio.
Transmitting or receiving in a
poor coverage area or subject to
interference.
poor coverage area or subject to
interference.
Check network connectivity and move to a
better coverage area if possible. Report
the area without coverage to an authorized
network technician.
better coverage area if possible. Report
the area without coverage to an authorized
network technician.
Poor display visibility.
Ambient Light Sensor is
obstructed.
obstructed.
Clear the obstruction and give the sensor
a clear path to ambient light.
a clear path to ambient light.
No network
connectivity icon in
display.
connectivity icon in
display.
Radio is out-of-range or cannot
connect with the OpenSky
network.
connect with the OpenSky
network.
Base station network connection
has failed.
has failed.
Return to coverage area if possible and
wait for condition to clear.
wait for condition to clear.
Use single-site trunking or switch to an
alternate channel.
alternate channel.
Radio will not transmit.
Radio may be out of coverage
area or may be overheated.
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.
overheated, let radio cool before retrying
transmission. Report this failure to an
authorized technician.
“Warning: No MRU”
Message.
Message.
Radio control head is unable to
communicate with mobile radio
unit (radio transceiver).
communicate with mobile radio
unit (radio transceiver).
Have the radio connections checked by an
authorized technician.
authorized technician.
Control head randomly
changes display.
changes display.
In multiple control head
configurations, another user is
operating the radio from another
control head.
configurations, another user is
operating the radio from another
control head.
None
Encrypted calls cannot
be made.
be made.
Not authorized to use.
Contact system administrator to request
encryption privileges.
encryption privileges.
Screen displays:
UNAUTH3
The radio network ID has not
been added to the network.
been added to the network.
Contact system administrator.
Screen displays:
NOAUTHV
Radio authentication of the VNIC
failed.
failed.
Contact system administrator.
Screen displays:
NOAUTHM
VNIC authentication of the radio
failed.
failed.
Contact system administrator.