Troubleshooting – Uniden GNS8400 User Manual

Page 42

No Display

If touchscreen not responding

while driving then Safe Mode is
on (see page 18).

Touchscreen not responding

Turn off power. Wait a moment

and turn back on.

Clean LCD with LCD cleaner.
Make sure you are only

momentarily touching screen.

No Sound

Check volume.

Make sure GPS antenna is

Searching For Satellites' still

raised to a horizontal position.

showing.

Make sure the unit has a clear

view of the sky.

Touch to switch to

NIGHT mode.

Make sure power supply is +12V
or +24V

Check power connection.

Display too bright when using at

night.

TROUBLESHOOTING

PROBLEM SOLUTION

The unit powers on but does not

Check the power connection.

boot up.

If unit has been exposed to hot

temperatures for long periods
turn off for a few minutes to
cool down.

DAY