Troubleshooting - Garmin GPSMAP 78 Owner's Manual

Troubleshooting

Problem
The screen or buttons do
not respond. How do I
reset the device?
I want to reset all the
customized settings
back to the factory
defaults.
My device does not
acquire satellite signals.
The batteries do not last
long.
How do I know my
device is in USB mass
storage mode?
My device is connected
to the computer, but it
will not go into mass
storage mode.
GPSMAP 78 Series Owner's Manual
Solution
1. Remove the batteries.
2. Reinstall the batteries.
NOTE: This does not erase any of your data or settings.
From the main menu, select Setup > Reset > Restore Defaults.
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.
Decrease the backlight settings
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.
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.
(page 37).
Appendix