Table 5-6. Remote Transponder Alert Troubleshooting Guide - Garmin GTN 6 series Maintenance Manual

5.3.1.4 Remote Transponder Related Alerts

Table 5-6. Remote Transponder Alert Troubleshooting Guide

Alert Text
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.
TRANSPONDER 1 –
ADS-B is not transmitting
position.
TRANSPONDER 2 -
ADS-B is not transmitting
position.
190-01007-A1
Rev. 6
Possible Cause
The transponder is reporting
a system failure.
The transponder is reporting
a system failure.
The GTN cannot
communicate with the
transponder or the
transponder is reporting a
system failure.
The GTN cannot
communicate with the
transponder or the
transponder is reporting a
system failure.
The transponders are
configured for different Mode
S addresses.
The transponder has
insufficient data to support
ADS-B.
The transponder has
insufficient data to support
ADS-B.
System Maintenance Manual GTN 6XX/7XX Part 23 AML STC
Corrective Action
Refer to the transponder installation
manual.
Refer to the transponder installation
manual.
If two transponders are present,
ensure that both GTNs are powered
on.
Check for proper configuration of the
GTN and transponder RS-232 ports.
Check for correct wiring.
Refer to the transponder installation
manual.
Ensure that both GTNs are powered
on.
Check for proper configuration of the
GTN 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.
Ensure the aircraft has a clear view of
the sky.
Refer to the transponder installation
manual.
Ensure the aircraft has a clear view of
the sky.
Refer to the transponder installation
manual.
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