Bedienungsanleitung Sony mdr rf 940 rk (Seite 2 von 2) (Deutsch, Englisch, Holländisch, Französisch, Italienisch, Portugiesisch, Spanisch)

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Problem

No sound/

Muffled sound

Distortion

Loud

background

noise

Solution

Turn on the transmitter

first, then put on the

headphones.

Check the connection of the

audio/video equipment or

the AC power adaptor.

Check that the audio/video

equipment is turned on.

Turn up the volume on the

connected audio/video

equipment, if the

transmitter is connected to

the headphones jack.

The mute function is

activated.

Use the headphones near

the transmitter.

Charge the NC-AA (HJ)

batteries or replace both

batteries of the headphones.

If the transmitter is

connected␣ to␣ the␣ headphones

jack, turn down the volume

of the connected audio/

video equipment.

Charge the NC-AA (HJ)

batteries or replace both

batteries of the headphones.

Move closer to the

transmitter. As you move

away from the transmitter,

more noise is likely to be

heard.

If the transmitter is

connected to the

headphones jack, turn up

the volume of the connected

audio/video equipment.

Charge the NC-AA (HJ)

batteries or replace both

batteries of the headphones.

Troubleshooting

( Operating the system

Listening to a

program

1 Select the radio frequency with the

CHANNEL selector switch.

Select the same channel on the

headphones and the transmitter.

CH2CH1

2 Turn on the audio/video equipment

then the transmitter.

POWER

3 Put on the headphones and the

power turns on automatically.

4 Adjust the volume.

Note

If the transmitter is connected to the headphones

jack of the source equipment, set the volume of

that equipment as high as possible without

distorting the audio signal.

Auto power on/off function

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.

Mute function

If a hissing noise is heard when the

headphones are used outside of the

effective range (see the next section), the

mute function will be activated and the

sound will not be heard from the

headphones. To restore the sound,

move near toward the transmitter.

When no audio signal is received for

more than approximately five

minutes

The transmitter will be burned off

automatically.

After listening to a program

Take the headphones off before turning

off the transmitter. If you turn off the

transmitter first, you may hear some

noise.

The effective areas

of the transmitter

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.

•Even within the signal reception area, there are

some spots (dead point) where the RF signal can

not be received. This characteristics is inherent to

RF signals, and does not indicate malfunction.

By slightly moving the transmitter, location of

the dead point can be changed.

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.

1 Remove the old ear pad by pulling it

out of the groove on the housing.

2 Place the new ear pad on the

housing and insert the edge of the

pad into the groove as illustrated.

Make sure that the entire edge of the ear

pad is securely inserted into the groove.

( Additional information

Precautions

• When the headphones are not to be

used for a long period of time, remove

the dry batteries (if any) to avoid

damage caused by battery leakage and

subsequent corrosion.

• 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.

Also remove the batteries to avoid

damage caused by battery leakage and

subsequent corrosion.

• 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.

Specifications

General

Carrier frequency

000 – 000 MHz

Channel Ch1, Ch2

Modulation FM stereo

Frequency response

20 – 20,000 Hz

Transmitter

RF Power Less than 94 dBµV/m at 3 m

Power source DC 4.5 V: supplied AC power

adaptor

Audio input stereo mini plug

Dimensions Approx. 90 mm dia x 35 mm

x 1

in.) (w/h)

Mass Approx. 200 g (7.1 oz.)

incl.batteries

Headphones

Power source DC 3 V: 2 x R6 (size AA) battery

Mass Approx. 270 g (9.5 oz.) incl.

batteries

Optional accessories

Plug adaptor PC-236HG

(stereo mini jack ˜ monaural mini plug)

Design and specifications are subject to change

without notice.

Sony mdr rf 940 rk Seite 2

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