Garmin GTN 625 Reference Manual page 89

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Message
TRANSPONDER
1 OR 2 -
Transponder has
failed.
TRANSPONDER
1 OR 2 -
Transponder is in
ground test mode.
TRANSPONDER
1 OR 2 -
Transponder
overtemp.
TRANSPONDER
1 OR 2 -
Transponder
undertemp.
TRUE NORTH
APPROACH -
Verify NAV Angles
are referenced to
True North (T).
USER WAYPOINT
IMPORT - User
waypoints
were imported
successfully.
190-01004-04 Rev. N
Description
The transponder has
detected an internal
fault and transponder
functionality may be
unavailable.
The transponder is
operating in a mode
intended for ground
testing.
The transponder is
reporting that its
internal temperature
has exceeded upper
operating limits.
The transponder is
reporting that its
internal temperature
has exceeded lower
operating limits.
A procedure is loaded
that is referenced
to true north and
the active leg has a
published true north
reference.
All user waypoints
were imported
successfully.
GTN 625/635/650 Cockpit Reference Guide
Action
Contact dealer for service.
Cycle the power to the
transponder.
Decrease temperature and increase
airflow near the transponder, if
possible. Monitor aircraft electrical
indications. Contact dealer for
service if this message persists.
Contact dealer for service if this
message persists.
Verify the NAV Angle is set to True
North.
No action is necessary; message is
informational only.
79

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