Bose QuietComfort Acoustic Noise Cancelling Manuel de l'utilisateur - Page 8
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Cleaning the headphones
Scheduled cleaning is not required. However, you can
simply wipe the outside surfaces with a damp cloth, as
needed. Also, be sure that the earcup ports are clear and
that no moisture is allowed into the earcups.
Troubleshooting
Problem
• Noise reduction
absent
• Low or no
volume
• Crackling noise;
intermittent loss
of noise reduction
• Low rumbling
AM257565_00 _V.pdf May 13, 2003
Reference
Possible Cause
No power
to headphone
Audio source
setting
Audio attenuator
connection
Low battery
Poor earcup fit
Ports blocked
Solution
Turn unit on;
check battery
Turn source
volume up or set
audio attenuator
on "Hi"
Check connection
at source and
insertion into
the earcup
Replace
battery
Adjust fit on ears
Clear ports
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