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190-01007-A1 System Maintenance Manual GTN 6XX/7XX Part 23 AML STC
Rev. 7 Page 5-17
5.3.1.8 Weather Radar Alerts
Table 5-10. Weather Radar Alert Troubleshooting Guide
Alert Text Possible Cause Corrective Action
WX RADAR FAIL – Weather
radar is inoperative.
GTN ARINC 708 input port or
ARINC 429 output not
configured correctly.
Check ARINC 708 port setting
for port 1. Raw ARINC 708
data can be viewed on the
GTN DIAGNOSTICS - ARINC
INPUTS page in configuration
mode.
Verify that ARINC 429 Out 3 is
configured for Radar Format 1.
Improper setup on the weather
radar.
Verify the configuration of the
weather radar.
Wiring connections are
incorrect.
Check wiring.
Weather radar is reporting a
system fault.
Check weather radar status
page on the GTN in
configuration mode.
Refer to the weather radar
installation manual.
WX RADAR SERVICE –
Weather radar needs service.
Return unit for repair.
Weather radar is reporting a
system failure.
Refer to the weather radar
installation manual for
troubleshooting.