3-222-709-14(1) Wireless Stereo Headphone System Operating Instructions MDR-RF875RK © 2000 Sony Corporation
WARNING Welcome! To prevent fire or shock hazard, do not expose the unit to rain or moisture. Thank you for purchasing the Sony MDR-RF875RK Wireless Stereo Headphone System. Before operating the unit, please read this manual thoroughly and retain it for future reference.
Notes on receiving performance The system for this equipment utilizes very high frequency signals in the 800 MHz band so the receiving performance may deteriorate due to the surroundings. The following examples illustrate conditions that may reduce the possible receiving range or cause interference with reception. • Inside a building with walls containing steel beams. • Area with many steel file cabinets, etc. • Area with many electrical appliances capable of generating electromagnetic noise.
N Getting started Unpacking Check that you have the following items: • The headphones Setting up the transmitter 1 Connect the transmitter to audio/video equipment.
B To connect to LINE OUT or REC OUT jacks Transmitter C To connect to a headphone jack of a TV or VCR. Set the NOISE FILTER switch to ON if noise is heard.
Continued 2 Connect the transmitter to an AC outlet using the supplied AC power adaptor. Notes • Use only the supplied AC power adaptor. Do not use any other AC power adaptor. Charging the headphone battery Using the headphones for the first time When you use the headphones for the first time, charge the battery in the following manner. 1 Connect the transmitter to a power source.
To recharge the headphone battery after use Since the charger shuts itself off in response to its internal timer after 24 hours, there is no need to worry about overcharing. N Operating the system Charging and using hours 1 Approx. charging hours Approx. using time* 1 60 minutes 24** 25 hours Listening to a program 2 First turn on the audio/video equipment and start playing. Remove the headphones from the transmitter. The transmitter’s power indicator will light in red.
Continued 4 5 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.
The effective areas of the transmitter The optimum distance is up to approximately 100 m without the system picking up some interference. However, the distance may vary according to the surroundings and environment. If the system picks up noise, reduce the distance between the transmitter unit and the headphones, or select the other channel. Replacing the ear pads When the ear pads become dirty or damaged, you can get replacements from your Sony dealer. Replace them as illustrated below.
N Additional information Troubleshooting Precautions • 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 pull on the cord. • 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.
Problem Solution Distortion If the transmitter is connected to a headphone jack, turn down the volume of the connected audio/video equipment. Change the radio frequency with the CHANNEL selector on the transmitter. Loud background noise Specifications General Carrier frequency 863.5 – 864.5 MHz Channel Ch1, Ch2, Ch3 The headphones’ POWER indicator light is weak or turned off.
Français Svenska Härmed intygar Sony Corp. att detta högtalarsystem står i överensstämmelse med de väsentliga egenskapskrav och övriga relevanta bestämmelser som framgår av direktiv 1999/5/EG. Mer information finns på webbadressen: http://www.compliance.sony.de/ Den här produkten är avsedd att användas i följande länder.
