69
190-01007-04 Rev. K
GTN 725/750 Cockpit Reference Guide
Me
ssage
s
Message
Description
Action
COM RADIO -
Com radio needs
service.
The com radio is
reporting that it needs
service. The com radio
may continue to
function.
Cycle the power to the COM radio.
Contact dealer for service.
CONFIGURATION
-
Terrain/TAWS
configuration is
invalid. GTN needs
service.
TAWS is inoperative
due to a configuration
problem with the GTN.
This message will be
accompanied by a TER
FAIL annunciation.
Contact dealer for service.
CONFIGURATION
MODULE -
GTN configuration
module needs
service.
The GTN cannot
communicate with its
configuration module.
The GTN may still have
a valid configuration.
Contact dealer for service.
COOLING -
GTN overtemp.
Reducing backlight
brightness.
Backlight brightness
has been reduced
due to high display
temperatures. The
backlight level will
remain high enough to
be visible in daylight
conditions.
Decrease cabin temperature and
increase cabin airflow (especially
near the GTN). Contact dealer for
service if this message persists.
COOLING FAN -
The cooling fan has
failed.
The GTN cooling fan is
powered, but it is not
turning at the desired
RPM.
Decrease cabin temperature and
increase cabin airflow (especially
near the GTN) to prevent damage
to the unit. Contact dealer for
service.
CROSSFILL
ERROR -
Crossfill is
inoperative. See
CRG for crossfilled
items.
Crossfill is not
working due to loss
of communication
with other GTN or due
to one GTN needing
service.
See Pilot’s Guide for a list of
crossfilled items that will no longer
be crossfilled. Contact dealer for
service.