Bose A20 Aviation, Руководство пользователя

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Troubleshooting
English - 31
Problem What to do
Low volume
of incoming
communications
• On the control module, make sure the volume controls are not set
too low. See “Intercom volume controls” on page 18.
• On the intercom/radio, make sure the volume controls are not set
too low.
• Inside the battery compartment, make sure the Intercom
(MON-ST) switch is correctly set for your intercom system.
See “The operation switches” on page 11-12.
• Check that all headsets sharing the intercom have the Intercom
(MON-ST) switch in the correct position.
• Unplug all other headsets and see if the volume can be adjusted
to an acceptable level.
Intermittent
communication
• Make sure the headset is firmly connected to the aircraft panel.
• Try the headset in a different seat location.
Reduced volume in
one ear only
• On the control module, make sure the volume controls are not set
too low. See “Intercom volume controls” on page 18.
• Inside the battery compartment, make sure the Intercom
(MON-ST) switch is correctly set for your intercom system.
See “The operation switches” on page 11-12.
No stereo separa-
tion or communica-
tions in one ear only
• If your aircraft has a mono audio system, verify that the Intercom
(MON-ST) switch is set to MON. Refer to “The operation switch-
es” on page 11-12.
• Depending on how your audio jacks are wired, there may be
only one channel of audio supplied to the headphone jack. If the
Intercom (MON-ST) switch is set to ST and you only hear commu-
nications on one side, set the switch to MON. This will play audio
on both sides. U174 and 5-pin XLR plugs are mono audio only.
Audio
Problem What to do
Reduced Acoustic
Noise Cancelling
®
noise reduction,
intermittent clicking
sounds, or commu-
nication distortion in
a loud environment
• On the outside of each earcup, make sure the TriPort
®
headset
openings are not blocked. If dust or dirt is present, carefully
remove the debris using tweezers. Do not vacuum or blow out
debris.
• Make sure there are no air gaps around the ear cushion seals.
If ear cushions appear worn, they should be replaced. Refer to
“Ear cushion replacement” on page 28.
Warning: If the headset emits any loud noise and related loss of
communications while in the Acoustic Noise Cancelling
mode, turn off the power switch. The headset will con-
tinue to provide communications in the passive noise
reducing mode.