Garmin APOLLO GX65 - Manual (Page 295)

Failure to pass the software checksum test indicates
that the software memory is corrupted. The GPS
board will not continue operation when the
following screen is displayed.
Software Test
Failed:
Contact IIMorrow
Non-Volatile RAM Tests
The non-volatile RAM validation code does the
following checks every time the unit is powered up.
Any tests which detect a failure reset the failed values.
Generally, the non-volatile RAM test pages are not
displayed, since in most cases the tests pass.
User Database Memory Failure
User waypoint checksums exist for each User
waypoint. If the checksums do not match, the User
waypoint is deleted. If this occurs, any flight plan
which references this user waypoint is also deleted.
In addition, User comment checksums exist for each
user-defined waypoint comment. The comment is
deleted if the calculated checksum does not match the
saved checksum. The following message is then
displayed until you press
ENTER .
User Database
Memory Failure
Press ENTER
Flight plan checksums exist for all flight plan
information. If a particular flight plan checksum does
not match the calculated checksum, the flight plan is
deleted, or in the case of the Active Flight Plan, the
plan is reinitialized. The following message is then
displayed until you press
ENTER .
Flight Plan
Memory Failure
Press ENTER
11-3
Start Up Displays