Troubleshooting; Cleaning The Headphones - Bose QuietComfort 2 Owner's Manual

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
No noise reduction
Low or no volume
Crackling noise;
intermittent loss
of noise reduction
Low rumbling
Volume too high
8
Care and Maintenance
What to do
• Turn on the headphones
• Check battery
• Turn source volume up
• Set LEVEL switch to HI
• Check headphones cord connection at
the source and the earcup
• Replace the battery
• Adjust how the headphones fit on your
ears
• Make sure earcup ports are clear
• Turn source volume down
• Set LEVEL switch to LO