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MDR-IF140K
N Operating the system
Notes �Do not connect to the PHONES IN jack and LINE IN jack at the same time. If you connect two audio/visual components to both jacks at the same time, both of the audio signals may result in mixed output. �Use only the supplied AC power adaptor. Do not use any other AC power adaptor.
Listening to a program
Before listening
To prevent your ears from being damaged, first lower the volume.
The effective area of the transmitter
The illustration below shows the approximate area covered by the infrared rays emitted from the transmitter.
Replacing the ear pads
The ear pads are replaceable. If the ear pads become dirty or worn out, replace them as illustrated below. The ear pad is not commercially available. You can order replacements from the store where you purchased this system, or at your nearest Sony dealer.
Unified polarity plug
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�When you connect the connecting cord directly to an earphone jack (monaural mini jack), the audio signal may not be output through the right channel. In such a case, use the separately sold PC-236MS plug adaptor (stereo mini jack h monaural mini plug) between the connecting cord and the earphone jack.
Turn on the audio/video component connected to the transmitter.
When the audio signal is input, the transmitter turns on automatically and the infrared emitters glow. If the transmitter is connected to the headphone jack, set the volume control of the audio source component as high as possible but not so high that the audio signal becomes distorted.
Transmitter Infrared ray Approx. 3 m (118 1/ 8 in.)
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45° 45° Approx. 7m (23 ft.)
Remove the old ear pad by pulling it off.
Approx. 3 m (118 1/ 8 in.)
Notes
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Turn on the headphones.
The power indicator on the upper part of the right housing glows red.
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Put on the headphones.
Be sure to put the right housing (R) on your right ear and the left housing (L) on your left ear.
� If you use the headphones at too great a distance from the transmitter, you may hear a hissing noise and if there is an object between the headphones and the transmitter, sound may be interrupted. These phenomena are inherent to infrared ray communication and do not mean that there is a problem with the system itself. � Do not cover the infrared sensors with your hands or hair. � When you use the headphones inside the area in the illustration above, the transmitter can be placed in front, behind or by the side of you. � The noise you may hear through the headphones may vary depending on the transmitter position and room conditions. It is recommended that you place the transmitter in a location that produces the clearest sound. �Do not use this system in areas exposed to direct sunlight or strong light. The sound may be interrupted. � Plasma displays may interfere with normal operation of this system.
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Place the new ear pad around the housing.
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Start playback of the component connected to the transmitter.
Sound is automatically muted if noise increases � Mute function If the infrared rays are obstructed, or the headphones are used outside their
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Adjust the volume.
effective range, noise will increase and sound will become hard to hear. To avoid potential ear damage as a result of noise, this function mute any sound from the headphones. Sound is automatically restored when you move nearer the transmitter or remove the obstruction. If no audio signal is input for more than approximately 5 minutes The transmitter turns off automatically. Note The brightness of the infrared emitters may not be uniform, however, this is not a malfunction.
If the infrared sensors are covered by your hands when adjusting the volume, the mute function will be activated and volume may not be adjusted. In this case, move nearer toward the transmitter or orient the infrared emitters on the left housing towards the transmitter. After listening to the programs Take off the headphones, and then turn off the power. You may also turn off the headphones automatically by placing them on the transmitter.
Note You may hear some noise when you disconnect the AC power adaptor from the transmitter before taking off the headphones.
