Table 5-6 Remote Transponder Alert Troubleshooting Guide - Garmin GTN Xi Series Maintenance Manual

5.3.1.4 Remote Transponder Related Alerts

Table 5-6 Remote Transponder Alert Troubleshooting Guide

Alert Text
TRANSPONDER 1 OR 2 -
ADS-B Out system fault.
Pressure altitude source
inoperative or connection
lost.
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.
TRANSPONDER 1 -
Transponder 1 needs
service.
TRANSPONDER 2 -
Transponder 2 needs
service.
TRANSPONDER 1 -
Transponder 1 is
inoperative or connection
to GTN is lost.
TRANSPONDER 2 -
Transponder 2 is
inoperative or connection
to GTN is lost.
TRANSPONDER -
Transponder 1 and 2 Mode
S addresses do not match.
190-01007-C1
Rev. 1
Possible Cause
The transponder has lost
communication with the
pressure altitude source.
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 is
above upper operating limits.
The transponder is reporting
that its internal temperature is
below lower operating limits.
The transponder is reporting a
system failure.
The transponder is reporting a
system failure.
The GTN Xi cannot
communicate with the
transponder or the
transponder is reporting a
system failure.
The GTN Xi cannot
communicate with the
transponder or the
transponder is reporting a
system failure.
The transponders are
configured for different
Mode S addresses.
GTN Xi Part 23 AML STC Maintenance Manual
Corrective Action
Verify wiring between the transponder
and the pressure altitude source.
If problem persists, contact Garmin
technical support for service.
Return unit to Garmin technical support
for service.
Cycle the power to the transponder.
Check for adequate ventilation around
the transponder.
Contact Garmin technical support for
service if this message persists.
Refer to the transponder installation
manual.
Refer to the transponder installation
manual.
If two transponders are present, ensure
that both GTN Xi units are powered on.
Check for proper configuration of the
GTN Xi and transponder RS-232 ports.
Check for correct wiring.
Refer to the transponder installation
manual.
Ensure that both GTN Xi units are
powered on.
Check for proper configuration of the
GTN Xi and transponder RS-232 ports.
Check for correct wiring.
Refer to the transponder installation
manual.
Check the Mode S address for each
transponder and verify that they match.
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