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 |
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| • Noise reduction | No power | Turn unit on; |
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| absent | to headphone | check battery |
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| • Low or no | Audio source | Turn source |
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| volume | setting | volume up or set |
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| audio attenuator |
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| on “Hi” |
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| Audio attenuator | Check connection |
|
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| connection | at source and |
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|
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| insertion into |
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| the earcup |
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|
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| • Crackling noise; | Low battery | Replace |
|
| intermittent loss |
| battery |
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| of noise reduction |
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| • Low rumbling | Poor earcup fit | Adjust fit on ears |
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| Ports blocked | Clear ports |
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AM257565_00 _V.pdf May 13, 2003 | 8 |
