Garmin GTN 750 Pilot's Manual page 371

Message
COOLING -
GTN overtemp.
Reducing backlight
brightness.
COOLING FAN -
The cooling fan has
failed.
CROSSFILL
ERROR -
Crossfill is
inoperative
CROSSFILL
ERROR -
GTN software
mismatch. See
CRG for crossfilled
items.
DATABASE -
Chart function
unavailable.
DATABASE -
Chart database
valid until [DATE].
190-01007-03 Rev. B
Description
Backlight brightness
has been reduced
due to high display
temperatures. The
backlight level will
remain high enough to
be visible in daylight
conditions.
The GTN cooling fan is
powered, but it is not
turning at the desired
RPM.
Crossfill is not
working due to loss
of communication
with other GTN or due
to one GTN needing
service.
Crossfill is configured
"on" but is not working
due to software
mismatch.
The GTN is configured
for ChartView or
FliteCharts and chart
verification has failed.
The GTN is configured
for ChartView or
FliteCharts and the
chart database has or is
about to expire.
Garmin GTN 725/750 Pilot's Guide
Action
Decrease cabin temperature and
increase cabin airflow (especially
near the GTN). Contact dealer for
service if this message persists.
Decrease cabin temperature and
increase cabin airflow (especially
near the GTN) to prevent damage
to the unit. Contact dealer for
service.
See section 16.4.1.4 for a list of
crossfilled items that will no longer
be crossfilled. Contact dealer for
service.
See section 16.4.1.4 for a list of
crossfilled items that will no longer
be crossfilled. Contact dealer to
have software versions updated.
Contact dealer for service.
Verify chart database expiration
date on the System – System
Status page. Update chart
database if necessary for
operations.
Foreword
Getting
Started
Audio &
Xpdr Ctrl
Com/Nav
FPL
Direct-To
Proc
Charts
Wpt Info
Map
Traffic
Terrain
Weather
Nearest
Music
Utilities
System
Messages
Symbols
Appendix
17-5
Index