OPERATING MANUAL K490 NC
EN
( 1) | On/Off button |
(2) | Charge control light |
(3) | Operating control light |
(4) | Combined charging/audio socket |
(5) | Charging cable |
(6) | Audio cable |
(7) | Flight adaptor |
(8) | Carrying case |
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Please charge your K490 NC before using it for the | ||
first time. |
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CHARGING |
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Please connect the charging cable ( 5) to the joint | ||
charging/audio socket (4) as well as to a free USB | ||
socket on your computer or a USB power adaptor | ||
(not supplied). The red charge contr ol light ( 2) | ||
indicates the charging process. It goes out when the | ||
K490 NC is fully charged. The charging process | ||
usually takes between 1.5 and 3 hours . It is not | ||
possible to listen and charge at the same time. | ||
However. during charging you can continue to use | ||
the sound cancelling function. We recommend that | ||
you store the K490 | NC charged . when it is not in use | |
for longer periods. |
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AUDIO PLAYBACK |
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Connect | t he au dio | cable to th e sock et ( 4) and |
conne ct | the other end with the earphones of your | |
audio source. |
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NOISE CANCELLING FUNCTION | ||
Switch On / Off button ( 1) to po sition "NC" and place | ||
the K490 | NC on your head . If necessary, adjust the | |
earpieces as needed . The K490 NC does not need t o | ||
be adjusted fur ther. You can al so use t he K490 NC | ||
without audio source and audio cable to cancel sound. | ||
The oper ating control light ( 3), which is gr een when in use, also indicates the charge level. It star ts t o flash when the charge is low. When the char ge is not sufficient for the sound cancelling function and the operating control light (3) goes off, you can continue to use the K490 NC for audio playback w ithout losing sound quality by switching off the on/off button ( 1)
IN THE AIRCRAFT
Please use the aircraft adaptor supplied: This aircra ft adaptor reduces the sensitivit y of your earpie ce to adjust it better to the typically predom inant output. which occurs in aircraft. This reduces the volume difference between
NOTES Do not use the headphones in particularly high t emperatures (for instance in strong sunlight or in vehic les when there are ext r emely high temperatures. for instance) nor expose it to wet conditions. Do not use the headphones when the battery is faulty (leakage, smell. warmth when switched off ) or when ther e are ot her defects. Do not open or modify the earph ones und er any circumstances. Store it out of r each of children. as small pieces can be swallowe d or br eathed in . Use the unit only with the cables supplied. Ther e can be differences in volu me between pur e audio playback and combined audio/ sound cancel ling funct ion, depending on the output of your au di o equipment.
