
190-01134-14 Rev. L
Garmin GMA 350H/350Hc Pilot’s Guide
28
GMA 350H/350Hc Audio Panel
3D AUDIO TROUBLESHOOTING
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
left” message
heard in both
ears.
“3D audio
right” message
not heard
1)
Mono headset in use
1)
Use a stereo headset
2)
Stereo headset in use
with mono/stereo
switch set to ‘mono’
2)
Set mono/stereo switch on headset
to ‘stereo’
3)
Aircraft wiring has
left audio wired to
both left and right
channels of stereo
headset jack
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
left” message
heard in both
ears, followed
by “3D audio
right” message
heard in both
ears
1)
Mono headset in use
1)
Use a stereo headset
2)
Stereo headset in use
with mono/stereo
switch set to mono
2)
Set mono/stereo switch on headset
to ‘stereo’
3)
Incorrect aircraft
wiring (left/right
shorted together)
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
right” message
heard in both
ears. “3D
audio left” not
heard
1)
Incorrect aircraft
wiring (right channel
used for mono
instead of left or left/
right swapped)
1)
See a service center as soon as
possible to inspect/correct wiring.
This wiring fault can cause fail-safe
audio not to function.
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