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190-01007-A1 System Maintenance Manual GTN 6XX/7XX Part 23 AML STC
Rev. 7 Page 5-23
Figure 5-2. GMA 35 Failure Annunciation
5.7 GMA 35 System Messages
Table 5-15. Remote Audio Panel Alert Troubleshooting Guide
Alert Text Possible Cause Corrective Action
AUDIO PANEL - Audio panel
needs service.
Audio panel should be
serviced.
Return audio panel to Garmin
for service.
AUDIO PANEL - Audio panel is
inoperative or connection to
GTN is lost.
Audio panel is not powered up.
Ensure the audio panel is
receiving power and connected
to ground.
Audio panel has failed.
Verify the wiring from the audio
panel to the GTN.
Wiring connections are
incorrect.
5.6 GMA 35 Failure Annunciations
Figure 5-2 depicts a typical failure indication of the GMA 35 audio panel.