Messages And Alarms (Marine Mode) - Garmin GPSMAP 640 Owner's Manual

Problem/Question Solution/Answer
How do I know my When your device is in USB mass storage
GPSMAP 620 or mode, a picture of a GPSMAP 620 or
GPSMAP 640 is in GPSMAP 640 connected to a computer
USB mass storage is shown. Also, you should see two new
mode? removable disk drives listed in My Computer.
My computer 1. Unplug the USB cable from your computer.
never detects the
2. Turn off the GPSMAP 620 or GPSMAP 640.
GPSMAP 620 or
3. Plug the USB cable into a USB port on
GPSMAP 640 when I
your computer and into your device.
connect it.
The GPSMAP 620 or GPSMAP 640
automatically turns on and goes into
USB mass storage mode. Ensure your
GPSMAP 640 is connected to a USB port
and not a USB hub.
I cannot see any new If you have several network drives mapped
removable drives in on your computer, Windows can have trouble
my list of drives. assigning drive letters to your GPSMAP 620
or GPSMAP 640 drives. See your operating
system Help file to learn how to map or assign
drive letters.
How can I find 1. Touch
restaurants near the
City.
hotel I will be staying
2. Find the hotel, and touch Go!.
at in the future?
3. Touch
Destination.
4. Search for a restaurant. Restaurants
nearest your hotel are listed first.
GPSMAP 620 and GPSMAP 640 Owner's Manual
Where To? > Near > A Different
Menu > Where To? > Near > My

Messages and Alarms (Marine Mode)

Boat is not Moving Fast enough to Calibrate—(speed sensor)
appears during water speed calibration. Check the speed wheel for
blockage and calibrate again. If the wheel is clear, calibrate again
and increase speed.
Can't Read User Card—cannot read card when attempting a user
data transfer.
Can't Unlock Maps—maps are locked and cannot be used on this
unit.
Can't Write User Card—cannot write card when attempting a
user data transfer.
Database error—general database error. Contact product support.
Lost Satellite Reception—the unit has lost satellite reception.
Make sure you have a clear view of the sky.
Maps Fit, Some Maps Will Not Be Drawn—there are more maps
present on the SD card than what the unit can support. Some of the
maps on the card will not be drawn or used to find map features.
Appendix
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