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Astro 320 and DC40 Owner’s Manual 73
Appendix
The device does not
respond. How do I reset
the device?
1. Remove the batteries.
2. Reinstall the batteries.
: 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 > >
.
My device does not
acquire satellite signals.
1. Take your device out of buildings and 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.
To learn how to maximize the battery life, see page 59.
How do I know my device
is in USB mass storage
mode?
On the device, the Garmin logo and
USB symbol
appear.
On your computer, you should see a new removable
disk drive in My Computer on Windows computers and
a mounted volume on Mac computers.