Garmin GTN 750 Pilot's Manual page 373

Message
DATALINK -
GDL 69 is
inoperative or
connection to GTN
is lost.
DATA LOST -
Pilot stored data
was lost. Recheck
settings.
DATA SOURCE -
Pressure altitude
source inoperative
or connection to
GTN lost.
DATA SOURCE -
Heading source
inoperative or
connection to GTN
lost.
DEMO MODE -
Demo mode is
active. Do not use
for navigation.
FPL WAYPOINT
LOCKED -
Stored flight plan
waypoint is not in
current navigation
database.
190-01007-03 Rev. B
Description
The GTN is configured
for a Garmin datalink
(GDL 69 or 69A)
and the GTN cannot
communicate with the
datalink. Data from
the datalink will not be
available.
User settings such as
map detail level, nav
range ring on/off, traffic
overlay on/off, and alert
settings have been lost.
The GTN is configured
to receive pressure
altitude but is not
receiving it from any
source.
The GTN is configured
to receive heading
information but is not
receiving it from any
source.
Demo mode is in
operation.
A stored flight plan
waypoint is no longer in
the current navigation
database.
Garmin GTN 725/750 Pilot's Guide
Action
Contact dealer for service.
Recheck settings.
Leg types requiring an altitude
source will no longer automatically
sequence. Contact dealer for
service.
Heading up map displays will not
be available. Contact dealer for
service.
Do not use for navigation. Power
cycle the GTN to exit demo mode.
Verify stored cataloged flight plans
and procedures. Modify stored
flight plans as necessary to include
waypoints that are in the current
navigation database.
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
17-7
Index