Garmin GTN 725 Cockpit Reference Manual page 84

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Message
DATALINK -
The GTN is configured
for a Garmin GSR 56
GSR 56 is
and the GTN cannot
inoperative or
communicate with the
connection to GTN
GSR 56. GSR Weather,
is lost.
Position Reporting, and
Phone Services will be
unavailable.
DATA LOST - User settings such as
map detail level, NAV
Pilot stored data
range ring on/off, traffic
was lost. Recheck
overlay on/off, and alert
settings.
settings have been lost.
DATA SOURCE -
The GTN is configured
to receive heading
Heading source
information but is not
inoperative or
receiving it from any
connection to GTN
source.
lost.
DATA SOURCE -
The GTN is configured
to receive pressure
Pressure altitude
altitude but is not
source inoperative
receiving it from any
or connection to
source.
GTN lost.
DATA SOURCE -
The GTN is configured
to receive radio altitude
Radar Altimeter
information but is not
source inoperative
receiving it from any
or connection to
source.
GTN lost.
DEMO MODE -
The GTN is in Demo
Mode and must not
Demo mode is
be used for actual
active. Do not use
navigation.
for navigation.
74
Description
Close the GSR 56 circuit breaker
and ensure the GSR 56 is receiving
power. Contact dealer for service.
Recheck settings.
Heading up map displays will not
be available. Contact dealer for
service.
If the GTN is being used to forward
pressure altitude to a transponder,
the transponder will not be
receiving pressure altitude from the
GTN while that message is present.
Contact dealer for service.
50 foot aural annunciation
is unavailable for HTAWS
installations. Contact dealer for
service.
Do not use for navigation. Power
cycle the GTN to exit demo mode.
Also ensure that the Direct-To key
is not stuck.
GTN 725/750 Cockpit Reference Guide
Action
190-01007-04 Rev. K