Garmin GPS 400 Pilot's Manual And Reference page 158

NAVDATA
A
APPENDIX
CARD USE
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removed when the GPS 400 is on or off. Insert the card with the swing arm handle
at the bottom and the label facing to the left (see illustration left). If the NavData
card is not present when the unit is turned on, you will receive a "No Jeppesen
Aviation Database - Limited to user defined waypoints" message on the database
confirmation page. If the NavData card is removed during operation, a "Data card
removed-Unit will restart in 30 seconds" warning. A counter will begin to count
down and, if the card is not replaced within 30 seconds, the GPS 400 will automati-
cally reinitialize. You may also reinitialize the unit manually by pressing
Appendix A: NavData Card Use
The Jeppesen NavData® card supplied with your GPS 400 can be installed or
To insert the NavData card:
There are two data card slots on the face of the GPS 400. The Jeppesen
NavData® card should be inserted in the left-most slot. The second
slot is provided for future options and expansion capabilities.
To remove the NavData card:
E
.