Garmin GPS 175 Maintenance Manual page 53

1090
ADS-B In
Fault
ADS-B/ADS-R/
1090 RX Fault
Cause
ADS-B In enabled
ADS-B In enabled
and both 1090
and the 1090 MHz
MHz and 978 MHz
receiver failed
receivers failed
Corrective
Action
Inspect all wiring, Inspect all wiring,
and coaxial cables and coaxial cables
Verify antenna is Verify antenna is
compatible
Reload software Reload software
Reset config and Reset config and
Reconfigure unit Reconfigure unit
190-02207-A2
Rev. 3
ADS-B In Service Soon
Fault Fault
ADS-B/NAV
Communication
TIS-B Fault
Fault
Cause Cause
XPDR board is
unable to
communicate with
ADS-B/NAV board
Corrective Corrective
Action Action
Reset config and
Reconfigure unit
Reload software
compatible
Figure 5-6 XPDR Alert Troubleshooting
GNX 375 XPDR Alert
Messages
ADS-B In
Traffic
Alerting
Fault
TSAA Fault
Cause
ADS-B IN processing is enabled and the
input data does not meet the performance
specifications.
Corrective
Action
Verify ADS-B In traffic is properly installed
and configured, display source, heading
source, GPS source are all configured
properly
Verify valid GPS antenna has clear view
of the sky
Reset configuration and reconfigure unit
Reload software
Sheet 3 of 5
GPS 175/GNX 375/GNC 355 Part 23 AML STC Maintenance Manual
Service Soon
Service Soon
Fault
Fault
ADS-B In
ADS-B In
Configuration
Calibration Fault
Fault
Cause Cause
ADS-B In
Factory ADS-B In
configuration data
calibration data is
did not load or is
invalid
invalid
Corrective Corrective
Action Action
Reset config and Reset config and
Reconfigure unit Reconfigure unit
Reload software Reload software
Service Soon
Fault
ADS-B In
Electrical Fault
Cause
Electrical fault with
the ADS-B board.
Possible internal
hardware problem.
Corrective
Action
Check wiring
Reload software
Reset config and
Reconfigure unit
If fault still exists,
contact Garmin.
Page 5-14