Bose QC-2 Headphones User Manual


 
8
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 Possible Cause Solution
Noise reduction
absent
Low or no
volume
Crackling noise;
intermittent loss
of noise reduction
Low rumbling
Reference
No power
to headphone
Audio source
setting
Audio attenuator
connection
Low battery
Poor earcup t
Ports blocked
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 t on ears
Clear ports
AM257565_00 _V.pdf May 13, 2003