8.
Troubleshooting
Take steps described in the tables below to solve simple problems before contacting
customer service.
WARNING:
Immediately turn off the unit and disconnect the power adapter if
the unit is not working properly. Never try to repair the unit
without authorized professionals for it may damage the unit.
PROBLEM
POSSIBLE CAUSE
POSSIBLE SOLUTION
The adapter is not well
connected.
Inspect the connection and
reconnect the adapter
properly.
Can not turn on
the unit.
The built-in rechargeable
battery is weak.
Connect the power adapter to
charge the battery.
There is no sound.
The volume may be lowered
or muted.
Turn up the volume or tap on
“mute” button again.
The screen is
dimmed or dark.
Brightness of LCD screen is
not properly adjusted.
Adjust brightness of LCD
screen to appropriate level.
There is no
satellite reception.
The unit may be blocked by
buildings or metallic
material.
Avoid using the device inside
buildings. Connect external
GPS antenna if necessary.
The unit may be wrapped
with covers such as
insulation screen paper.
Remove the cover.
The unit is not steady.
Avoid excessively shaking the
unit.
Satellite reception
is weak or
unstable.
System software fails to
function due to updates.
Restart the unit.
Troubleshooting
