User manual SONY MDR-NC40

[. . . ] * The hours required to fully charge empty batteries Using the headphones with a commercially available R 6 (size AA) dry batteries The OFF/CHG indicator lights up in green and charging starts. @ To avoid damage to the system caused by battery leakage and corrosion; ­ Install the batteries with the correct polarity. ⭠Do not try to recharge the batteries. [. . . ] ⭠Do not try to recharge the batteries. ­ Remove the batteries if the system is not to be used for a long period of time. In case of battery leakage, wipe off any deposit in the battery compartments before installing new batteries. When the POWER indicator dims, and a hissing noise increases charge the NCAA (HJ) batteries or replace both batteries with new ones. The optimum distance is up to approximately 130 feet (40m) without the system picking up some interference. However, the distance may vary according to the surroundings and environment. If the system picks up some noise while using it within the above mentioned distance, reduce the distance between the transmitter unit and the headphones, or select the other channel. notes · When you use the headphones inside the effective areas of the transmitter, the transmitter can be placed in any direction from the listener. When the ear pads become dirty or damaged, you can get replacements from your Sony dealer. This will allow you to hear outside sounds and to be considerate to the people around you. If you have any questions or problems concerning the system that are not covered in this manual, please consult the nearest Sony dealer. Be sure to bring the headphones and the transmitter to the Sony dealer when requiring repair work. Remove the old ear pad by pulling it out of the groove on the housing. Place the new ear pad on the housing and insert the edge of the pad into the groove as illustrated. When you remove the headphones, the power turns off automatically. Do not apply pressure to the left ear pad when not using the headphones, otherwise the headphones will be switched on. [. . . ] When you remove the headphones, the power turns off automatically. Do not apply pressure to the left ear pad when not using the headphones, otherwise the headphones will be switched on. Make sure that the entire edge of the ear pad is securely inserted into the groove. [. . . ]