3-254-600-32(1) Wireless Stereo Headphone System Operating Instructions MDR-RF820RK MDR-RF850RK © 2005 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-RF820RK/RF850RK Wireless Stereo Headphone System. Before operating the unit, please read this manual thoroughly and retain it for future reference.
Notes on receiving performance This system 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 reception range or cause interference. • Inside a building with walls containing steel beams. • An area with many steel file cabinets, etc. • An area with many electrical appliances capable of generating electromagnetic fields.
N Getting started Unpacking Check that you have the following items: • The headphones (1) Charging the supplied rechargeable batteries The supplied rechargeable nickel-metal hydride batteries are not charged from the first time you use them. Be sure to charge them before use. To charge the headphones, place them on the transmitter. 1 Press the button of the left housing to open the battery compartment lid. • The transmitter (1) The battery compartment lid comes off.
3 Close the battery compartment lid. Right housing Left housing When the indicator does not light in green 4 Connect the supplied AC power adaptor to the transmitter. Transmitter to an AC outlet AC power adaptor (supplied) to DC IN 9V jack 5 Rest the headphones on the transmitter so that the headphones’ contact point meets the transmitter’s contact pin while making sure that the charging indicator lights in green. Charging is completed in about 16 hours and the charging indicator goes off.
Charging and usage hours Approx. Notes on Batteries Approx. usage time* 1 changing hours MDR-RF820RK MDR-RF850RK 1 hour 80 minutes*3 75 minutes*3 16 hours*2 18 hours*3 15 hours*3 1 * at 1kHz, 1mW+1mW output *2 hours required to fully charge empty batteries *3 Time stated above may vary, depending on the temperature or conditions of use. Using the headphones with dry batteries (sold separately) Commercially available (size AAA) dry batteries can also be used to power the headphones.
Setting up the transmitter 1 Connect the transmitter to audio/ video equipment.
C To connect to TV, etc. If noise occurs when the transmitter is connected to your TV or VCR, set the NOISE FILTER switch to ON. to INPUT B jacks Transmitter 2 Connect the supplied AC power adaptor to the transmitter. to an AC outlet Transmitter 1 2 3 CHANNEL NOISE FILTER ON OFF INPUT A Left channel (white) L INPUT B AC power adaptor (supplied) Right channel (red) R DC IN 9V ! to DC IN 9 V jack Connecting cord (supplied) to stereo mini jack Notes • Use only the supplied AC power adaptor.
N Operating the system 3 Select the radio frequency with the CHANNEL selector switch. Listening to a programme Before listening CHANNEL 1 2 3 To prevent your ears from being damaged, first lower the volume. 1 Turn on the audio/video equipment connected to the transmitter. If the transmitter is connected to the headphone jack, set the volume control of the audio source equipment as high as possible but not so high that the audio signal becomes distorted.
5 Turn up the volume to a moderate level with the VOL control. TUN E A MDR-RF850RK Press the TUNE button briefly for automatic tuning of the headphones. If you do not receive a clear audio signal, press it again. TUNE button VOL control The headphones automatically turn off when they are taken off — Auto power on/off function Do not pull up the self-adjusting band when not in use, as this will consume the battery power.
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 some noise while using it within the above mentioned distance, reduce the distance between the transmitter unit and the headphones, or select another channel. Replacing the ear pads The ear pads are replaceable.
N Additional information Troubleshooting Precautions • If the transmitter is not to be used for a long period of time, disconnect the AC power adaptor from the AC outlet by 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 the headphone jack, volume of the connected audio/video equipment. General Change the radio frequency with the CHANNEL selector on the transmitter. Carrier frequency The headphones’ POWER indicator light is weak or turned off.
Deutsch 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/ Dansk Undertegnede, Sony Corp., erklærer herved, at følgende udstyr overholder de væsentlige krav og øvrige relevante krav i direktiv 1999/5/EF. Yderligere oplysninger findes på http://www.compliance.sony.de/ Suomi Sony Corp.
