GPSMAP 78 Series Owner’s Manual
Appendix
Troubleshooting
Problem
Solution
The screen or buttons do
not respond. How do I
reset the device?
1. Remove the batteries.
2. Reinstall the batteries.
NOTE
: This does not erase any of your data or settings.
I want to reset all the
customized settings
back to the factory
defaults.
From the main menu, select
Setup
>
Reset
>
Restore Defaults
.
My device does not
acquire satellite signals.
1. Take your device out of parking garages and away from tall
buildings and trees.
2. Turn on the device.
3. Remain stationary for several minutes.
The batteries do not last
long.
Decrease the backlight settings (
).
How do I know my
device is in USB mass
storage mode?
On the device, a screen appears showing the Garmin logo and
the USB symbol. On your computer, you should see a new
removable disk drive in My Computer on Windows computers
and a mounted volume on Mac computers.
My device is connected
to the computer, but it
will not go into mass
storage mode.
You may have loaded a corrupted file.
1. Disconnect the device from your computer.
2. Turn off the device.
3. Press and hold the
Rocker
while you connect the device to
your computer.
Continue pressing the
Rocker
for 10 seconds or until the
device goes into mass storage mode.
