Garmin GMA 350 Pilot's Guide - Page 22

GMA 350 Audio Panel Enabling 3D Audio Press and hold the PILOT Key to toggle 3D audio processing on and off for all headset positions. When 3D Audio is enabled, the aural message "3D audio left" is heard in the left ear followed by "3D audio right" in the right ear. If the aural messages are not heard in only the left and then the right ear respectively, the cause may be aircraft wiring or headset settings. Refer to the following table if a headset or aircraft wiring problem is suspected. 3D Audio Troubleshooting Symptom(s) Cause(s) Solution(s) "3D audio 1) Mono headset in use left" message heard in both 2) Stereo headset in use ears. with mono/stereo "3D audio switch set to 'mono' right" message 3) Aircraft wiring has not heard left audio wired to both left and right channels of stereo headset jack 1) Use a stereo headset 2) Set mono/stereo switch on headset to 'stereo' 3) If after checking solutions #1 and #2 see a service center as soon as possible to inspect/ correct wiring. This wiring fault can cause fail-safe audio not to function. "3D audio 1) Mono headset in use left" message 2) Stereo headset in use heard in both with mono/stereo ears, followed switch set to mono by "3D audio right" message heard in both ears 3) Incorrect aircraft wiring (left/right shorted together) 1) Use a stereo headset 2) Set mono/stereo switch on headset to 'stereo' 3) If after checking solutions #1 and #2 see a service center as soon as possible to inspect/ correct wiring. This wiring fault can cause fail-safe audio not to function. 22 Garmin GMA 350 Pilot's Guide 190-01134-12 Rev. C