Hytera MT680 Tetra - Troubleshooting

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Owner’s Manual
30
10. Troubleshooting
Phenomenon Analysis Solution
Terminals cannot be
powered on.
The power cord is connected
improperly.
Connect the power cord correctly.
An abnormal voltage is output from
the vehicle battery.
Check the battery strength.
The power cord is damaged.
Replace the power cord with a new
one.
The terminal and the remote control
head are connected improperly (for
remote mobile terminal only).
Replace the remote mounting cable
with a new one and connect the
terminal to the remote control head
correctly.
Network registration
fails or network can
not be found.
The terminal is operating in DMO
mode.
Switch to TMO mode.
The terminal is out of the network
coverage.
Check the signal strength. Make
sure the terminal is within the
network coverage.
The terminal is not granted network
access.
Contact the network operator for the
terminal authorization.
Calls cannot be
initiated.
The terminal is out of the network
coverage.
Check the signal strength. Make
sure the terminal is within the
network coverage.