Garmin GTN 625 Pilot's Manual page 506

Message
Foreword
TRANSPONDER
Getting
1 OR 2 -
Started
Transponder has
Audio &
failed.
Xpdr Ctrl
Com/Nav
FPL
TRANSPONDER
1 OR 2 -
Direct-To
Transponder is in
ground test mode.
Proc
TRANSPONDER
Wpt Info
1 OR 2 -
Transponder
Map
overtemp.
Traffic
TRANSPONDER
1 OR 2 -
Terrain
Transponder
undertemp.
Weather
TRUE NORTH
Nearest
APPROACH -
Services/
Verify NAV Angles
Music
are referenced to
Utilities
True North (T).
System
USER WAYPOINT
IMPORT - User
Messages
waypoints
were imported
Symbols
successfully.
Appendix
Index
16-22
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.
Garmin GTN 625/635/650 Pilot's 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.
190-01004-03 Rev. K