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Troubleshooting
NOTE:
Immediately turn off the device and disconnect the power adapter if the
device is not working properly. Never try to repair the unit without
authorized professionals for it may damage the unit.
PROBLEM
Users can't turn
on the unit.
There is no
sound.
There is no
picture.
The unit can't
receive satellite
signals or can't
orient.
POSSIBLE CAUSE
The adaptor doesn't
connect well.
The built-in rechargeable
battery is weak.
The volume may be turned
down or mute.
The brightness may be
turned down.
The unit may be obstructed
by buildings or metal block.
EN-22
POSSIBLE SOLUTION
Connect the adaptor
correctly.
Use the adaptor to supply
power or charge the
battery.
Turn up the volume or turn
on the sound output.
Adjust the brightness of the
LCD.
Make sure to use the unit
out of room; if in the
vehicle, you can use the
external GPS antenna to
solve this problem.
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