Garmin GTN Xi Series, Руководство по обслуживанию

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190-01007-C1 GTN Xi Part 23 AML STC Maintenance Manual
Rev. 1 Page 7-10
7.2.2.7 Receiver Audio Check
If there are receiver audio sources connected to the GMA 35, the interface should be verified as described
below. Ensure the GMA 35, as well as each interfaced receiver (e.g., DME, ADF, etc.), is powered on.
1. Plug in a headset at pilot and co-pilot position.
2. Tune the installed receiver to a valid station.
3. Ensure audio is being received over the crew headsets.
4. Ensure the audio volume is sufficient for all anticipated cockpit noise conditions. Adjust the audio
output level as needed at the receiver.
Repeat steps 2 through 4 for each installed receiver.
7.2.2.8 Intercom System (ICS) Check
NOTE
If a mono headset is plugged into a stereo phone jack position, damage will not occur to
the GMA 35. If a passenger plugs a mono headset in any passenger position, stereo
listeners will lose one channel.
1. Place the audio panel into ALL ICS mode (refer to GTN Xi Series Pilot’s Guide ) so that all ICS
positions hear all others.
2. De-select or turn off other audio sources (e.g., MKR, transceivers, receivers, alerts). Some
configurations may mute passenger intercom audio to crew when aircraft audio is present.
3. From the pilot headset position, verify the pilot, co-pilot, and all passenger mic inputs can be heard
in the pilot’s headset when speaking into the mic input under test (adjust pilot ICS volume, if
necessary).
4. Speak into the pilot’s mic and verify that pilot mic audio is heard in the co-pilot headset (adjust
co-pilot ICS volume, if necessary) and in each passenger headset (adjust passenger ICS volume, if
necessary).
7.2.2.9 Music System Check (If Installed)
1. Set the intercom to the ALL mode.
2. Connect a stereo audio source to MUSIC 1 or MUSIC 2. Verify that stereo audio is heard over the
pilot headset position.
3. Tune a station on COM 1 and verify that the sound is muted by active COM 1 audio (break squelch
on COM 1, if necessary).
4. Verify that stereo audio is heard in the passenger headsets.