Troubleshooting - Nextar M3-MX - Automotive GPS Receiver Hardware Instruction Manual

Troubleshooting

Take steps described in the tables below to solve simple problems before contacting
customer service.
If you suspect something wrong with this unit, immediately turn the power off and
disconnect the power connector from the unit. Never try to repair the unit yourself
because it is dangerous to do so.
PROBLEM
User can't turn
the unit on.
There is no
sound.
Dark screen.
The unit can't
receive satellite
signals or can't
orient.
POSSIBLE CAUSE
The adaptor is not correctly
connected.
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.
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.