User manual SONY MDR-V900HD

[. . . ] Using the headphones for the first time When you use the headphones for the first time, charge the battery in the following manner. When you connect the transmitter directly to a monaural earphone jack, the audio signal will not be output through the right channel. In such a case, use the separately sold PC-236HG plug adaptor. ⷠIf the connected equipment has the AVLS (Automatic Volume Limiter System) function, be sure to turn the function off when using the transmitter. [. . . ] To recharge the headphone battery after use Since little electric current is used for charging, there is no need to worry about overcharging. The transmitter's power indicator will light in red. 50 minutes 55 minutes 20 hours 23 hours * at 1 kHz, 1 mW + 1 mW output ** The hours required to fully charge empty batteries When you put on the headphones the headphone power turns on automatically. Turn up the volume to a moderate level with the VOL control. press the TUNING button briefly for automatic tuning of the headphones. If you do not receive a clear audio signal, press it again. Sending RF signals from the Transmitter The transmitter starts sending the RF signals automatically, when it detects audio signals from the equipment connected. If it does not detect an audio signal for more than approximately four minutes, the transmitter will stop sending RF signals, and the power indicator turns off. When the transmitter receives an audio signal again, it starts sending the RF signals, and the power indicator will light in red again. If the audio signal is very weak, the transmitter does not send RF signals. if the transmitter is connected to a headphone jack , make sure the volume of the equipment connected is set to 5 ­ 6 or higher. If you connect the transmitter to the LINE OUT or REC OUT jack of an audio reproducer, make sure that the NOISE FILTER switch is set to OFF. Make sure that the NOISE FILTER switch is set to either ON or OFF (If the switch gets stuck between ON and OFF, the sound will be cut off). When the transmitter is not to be used for a long period of time, disconnect the AC power adaptor from the AC outlet holding the plug. Do not leave the wireless stereo headphone system in a location subject to direct sunlight, heat or moisture. Notes on headphones Preventing hearing damage Avoid using headphones at high volume. Hearing experts advise against continuous, loud and extended play. If you experience a ringing in your ears, reduce the volume or discontinue use. caring for others Keep the volume at a moderate level. 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. [. . . ] Disposing of the headphones Be sure to remove the built-in rechargeable batteries from the headphones before you dispose of the headphones. First remove the left headphone's ear pad. The headphones' POWER indicator light is weak or turned off. ⷠCharge the built-in rechargeable battery or if the POWER indicator is still off after charging the built-in rechargeable battery, take the headphones to a Sony dealer for replacement of the rechargeable battery. [. . . ]