Garmin GTN 725 Cockpit Reference Manual page 66

Message
CONFIGURATION-
Terrain/TAWS
configuration is invalid.
GTN needs service.
CONFIGURATION
MODULE-
GTN configuration
module needs service.
COOLING-
GTN overtemp.
Reducing backlight
brightness.
COOLING FAN-
The cooling fan has
failed.
CROSSFILL ERROR-
GTN software
mismatch. See CRG for
crossfilled items.
58
Description
TAWS is inoperative
due to a configuration
problem with the GTN.
This message will be
accompanied by a TER
FAIL annunciation.
GTN cannot communicate
with its configuration
module. The GTN may still
have a valid configuration.
Backlight brightness has
been reduced due to high
display temperatures. The
backlight level will remain
high enough to be visible
in daylight conditions.
GTN cooling fan is
powered, but it is not
turning at the desired
RPM.
Crossfill is configured
"on" but is not working
due to software mismatch.
GTN 725/750 Cockpit Reference Guide (CRG)
Action
Contact dealer for service.
Contact dealer for service.
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 list of crossfilled items
listed in System section that
will no longer be crossfilled.
Contact dealer for service
and to have software
versions updated.
190-01007-04 Rev. D