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English - 31
Troubleshooting
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
separation or
communications 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
switches” 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
communications 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 communication
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
continue to provide communications in the passive noise
reducing mode.
31


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