77
190-01007-04 Rev. K
GTN 725/750 Cockpit Reference Guide
Me
ssage
s
Message
Description
Action
GPS RECEIVER -
GPS receiver has
failed. Check GPS
coax for electrical
short.
Internal communication
to the SBAS board is
inoperative.
Use a different GPS receiver
or a non-GPS based source of
navigation. Contact dealer for
service.
GPS RECEIVER -
GPS receiver needs
service.
The GPS module is
reporting that it needs
service. The GPS module
may continue to
function.
Use a different GPS receiver
or a non-GPS based source of
navigation. Contact dealer for
service.
GPS RECEIVER -
Low internal clock
battery.
The GPS module
indicates that its clock
battery is low. Almanac
data may have been
lost. The unit will
function normally, but
may take a longer
than normal period to
acquire a GPS position.
Contact dealer for service.
GPS SEARCHING
SKY -
Ensure GPS
antenna has an
unobstructed view
of the sky.
The GPS module is
acquiring position and
may take longer than
normal. This message
normally occurs after
initial installation or if
the unit has not been
powered for several
weeks.
No action is necessary; message is
informational only.
GTN -
GTN needs service.
The GTN has lost
calibration data that
was set by Garmin
during manufacturing.
Contact dealer for service.
HOLD EXPIRED -
Holding EFC time
has expired.
The selected Expect
Further Clearance (EFC)
time for a user-defined
hold has passed.
No action is necessary; message is
information only.
