Bose 89, 336, User Manual Page 8

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  • TROUBLESHOOTING
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English
Troubleshooting
Problem What to do
No noise reduction Turn on the headphones.
Replace the battery.
Low or no volume Turn the source volume up.
Set LEVEL switch to HI.
Check the headphones cord connection at the source and the earcup.
Crackling noise;
intermittent loss of
noise reduction
Replace the battery.
Low rumbling sound Adjust the fit of the headphones on your ears.
Make sure no foreign objects are inside the earcups.
Volume too high Turn the surce volume down.
Set LEVEL switch to LO.
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