Sony MDR-IF240RK Operating Manual

3-248-361-15(1)

Cordless Stereo Headphone System

Operating Instructions

Mode d’emploi

Manual de instrucciones

MDR-IF240RK

WARNING

To reduce the risk of fire or electric shock, do not expose this apparatus to rain or moisture.

To reduce the risk of fire or electric shock, do not expose this apparatus to dripping or splashing, and do not place objects filled with liquids, such as vases, on the apparatus.

To avoid electrical shock, do not open the cabinet. Refer servicing to qualified personnel only.

Do not install the appliance in a confined space, such as a bookcase or built-in cabinet.

As the main plug of AC power adaptor is used to disconnect the AC power adaptor from the mains, connect it to an easily accessible AC outlet. Should you notice an abnormality in it, disconnect it from the AC outlet immediately.

Do not expose the battery to excessive heat such as direct sunlight, fire or the like.

Owner’s Record

The model number is located on the front of the transmitter and the left inner side of the headband.

The serial number is located at the bottom of the transmitter and the right inner side of the headband.

Record these numbers in the spaces provided below. Refer to them whenever you call upon your Sony dealer regarding this product.

Model No. MDR-IF240RK

Transmitter TMR-IF240R Headphones MDR-IF240R

Serial No.

Transmitter Headphones

You are cautioned that any changes or modifications not expressly approved in this manual could void your authority to operate this equipment.

For customers in the U.S.A and Canada

RECYCLING NICKEL METAL HYDRIDE BATTERIES

Nickel Metal Hydride batteries are recyclable.

You can help preserve our environment by returning your used rechargeable batteries to the collection and recycling location nearest you.

For more information regarding recycling of rechargeable batteries, call toll free

1-800-822-8837, or visit http://www.rbrc.org/

Caution: Do not handle damaged or leaking Nickel Metal Hydride batteries.

The validity of the CE marking is restricted to only those countries where it is legally enforced, mainly in the countries EEA (European Economic Area).

Notice for customers: the following information is only applicable to equipment sold in countries applying EU directives

The manufacturer of this product is Sony Corporation, 1-7-1 Konan Minato-ku Tokyo, 108-0075 Japan. The Authorized Representative for EMC and product safety is Sony Deutschland GmbH, Hedelfinger Strasse 61, 70327 Stuttgart, Germany. For any service or guarantee matters please refer to the addresses given in separate service or guarantee documents.

For customers in Australia

The supply cord of AC power adaptor can not be replaced; if cord is damaged, AC power adaptor should be discarded.

Disposal of Old Electrical & Electronic Equipment (Applicable in the European Union and other European countries with separate collection systems)

This symbol on the product or on its packaging indicates that this product shall not be treated as household waste. Instead it shall be handed over to the applicable collection point for the recycling of electrical and electronic equipment. By ensuring this product is disposed of correctly, you will help prevent potential negative consequences for the environment and human health, which could otherwise be caused by inappropriate waste handling of this product. The recycling of materials will help to conserve natural resources. For more detailed information about recycling of this product, please contact your local Civic Office, your household waste disposal service or the shop where you purchased the product.

Disposal of waste batteries (applicable in the European Union and other European countries with separate collection systems)

This symbol on the battery or on the packaging indicates that the battery provided with this product shall not be treated as household waste. On certain batteries this symbol might be used in combination with a chemical symbol. The chemical symbols for mercury (Hg) or lead (Pb) are added if the battery contains more than 0.0005% mercury or 0.004% lead. By ensuring these batteries are disposed of correctly, you will help prevent potentially negative consequences for the environment and human health which could otherwise be caused by inappropriate waste handling of the battery. The recycling of the materials will help to conserve natural resources.

In case of products that for safety, performance or data integrity reasons require a permanent connection with an incorporated battery, this battery should be replaced by qualified service staff only. To ensure that the battery will be treated properly, hand over the product at end-oflife to the applicable collection point for the recycling of electrical and electronic equipment.

For all other batteries, please view the section on how to remove the battery from the product safely. Hand the battery over to the applicable collection point for the recycling of waste batteries.

For more detailed information about recycling of this product or battery, please contact your local Civic Office, your household waste disposal service or the shop where you purchased the product.

Welcome!

Thank you for purchasing the Sony MDR-IF240RK Cordless Stereo Headphone System. Before operating the unit, please read this manual thoroughly and retain it for future reference.

The MDR-IF240RK is a cordless stereo headphone system using infrared transmission. You can enjoy listening to a programme free from the restriction of the headphone cord by simply connecting the transmitter to a TV, or audio components equipped with a headphone jack or a line output jack.

• Cordless, noiseless infrared headphone system resistant to external noise, etc.

• Easy rechargeable battery system automatically charges the headphones when placed on the transmitter.

• Wide infrared reception range of up to 7m (23 ft.).

• Self-adjusting headband mechanism eliminating the need for headband adjustment.

• Single VOL control adjusts both the right and left volume of the headphones.

• Either rechargeable nickel-metal hydride battery (supplied) or commercially available (size AAA) dry battery can be used to power the headphones.

Table of contents

Getting started

Unpacking ........................................... 6

Charging the supplied rechargeable

battery .............................................. 7

Setting up the transmitter ............... 10

Operating the system

Listening to a program .................... 12

The effective area of the

transmitter ..................................... 14

Replacing the ear pads .................... 14

Additional information

Specifications .................................... 15

Precautions ....................................... 16

Troubleshooting ............................... 16

N Getting started

Unpacking

Check that you have the following items before using the headphones:

• The transmitter TMR-IF240R (1)

• AC power adaptor (1)

• Connecting cord (1) (phono plugs h stereo mini plug)

• The headphones MDR-IF240R (1)

• Unimatch plug adaptor (1) (stereo mini jack h stereo phone plug)

• Rechargeable nickel-metal hydride battery (1)

Getting started

Charging the supplied rechargeable battery

The supplied rechargeable nickel-metal hydride battery is not charged from the first time you use it. Be sure to charge them before use.

To charge the headphones, place them on the transmitter.

1 Open the battery compartment

lid of the left housing.

3 Close the battery compartment

lid.

4 If your AC power adaptor is

equipped with a voltage selector, set it to the operating voltage in your area with a screw driver before connecting the AC power adaptor to an AC outlet.

2 Insert the supplied rechargeable

nickel-metal hydride battery into the battery compartment matching 3 terminal on the battery to 3 in the compartment.

Do not use rechargeable battery other than the supplied one.

(Continued)

Getting started

5 Connect the supplied AC power

adaptor to the transmitter.

Transmitter

to an AC outlet

To recharge the headphone battery after use

Place the headphones on the transmitter after you use the headphones. Since the built-in timer recognizes when charging is complete, there is no need to take off the headphones from the transmitter after the completion of charging.

AC power adaptor (supplied)

to DC IN 9V jack

6 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 up.

The charging is completed in about 16 hours and the charging indicator goes off.

Right housing

Contact point

Contact pin

Left housing

When the indicator is not lit

Check if the right and left headphones are rested on the transmitter correctly. The indicator may not be lit if the headphones’ contact point does not meet the transmitter’s contact pin. Take off the headphones and place them on the transmitter again so that the indicator lights up.

Notes

•The transmitter automatically turns off while charging the battery.

•This system is designed to charge only the supplied rechargeable battery type BP-HP550 for safety. Note that other types of rechargeable battery cannot be charged with this system.

•If a dry battery is installed, they cannot be charged.

•Do not attempt to use the supplied BPHP550 rechargeable battery for other components. They are for use with this system only.

•Charge in an environmental temperature of between 0˚C and 40˚C (between 32 ˚F and 104˚F).

Charging and usage hours

Approx. charging hours

1 hour

16 hours*

*1at 1 kHz, 1 mW +1 mW output *2hours required to fully charge empty

*3Time stated above may vary, depending

battery

on the temperature or conditions of use.

Approx. usage

time*

1 hour and 45 minutes*

35 hours*

Getting started

When the remaining battery power becomes weak

When the rechargeable battery becomes weak, the power indicator light dims. Recharge the battery as soon as possible.

Note

The rechargeable nickel-metal hydride battery should be replaced with new one when they last only half the expected time after a proper recharging. The rechargeable battery type BP-HP550 is not commercially available. You can order the battery from the store where you purchased this system, or at your nearest Sony dealer.

Using the headphones with dry battery (sold separately)

Commercially available (size AAA) dry batteries can also be used to power the headphones. Install the battery in the same manner as described in steps 1 through 3 of “Charging the supplied rechargeable battery.”

When dry battery is installed, the battery charge function is not

activated.

Notes on Batteries

• Do not charge a dry battery.

• Do not carry a dry battery together with coins or other metallic objects. It can generate heat if the positive and negative terminals of the battery are accidentally come into contact with metallic objects.

• When you are not going to use the unit for a long time, remove the battery to avoid damage from battery leakage or corrosion.

Battery life

Battery

Sony alkaline battery LR03/AM-4(N)

Sony manganese battery R03/UM-4 (NU)

*1at 1 kHz, 1 mW+1 mW output *2Time stated above may vary, depending

on the temperature or conditions of use.

Approx. hours*

60 hours*

28 hours*

Getting started

Setting up the transmitter

A When connecting to a

headphones jack

Connect to the PHONES IN jack on the transmitter.

The transmitter is equipped with two input jacks, which allows for connection to the specified output jacks: PHONES IN to the headphone jack, and LINE IN to the LINE OUT jacks of your connected equipment.

1 Connect the transmitter to an

audio/video component.

Select method A or B, according to the output jack type of the AV component you use.

Transmitter

to PHONES IN jacks Left channel (white)

Right channel (red)

Connecting cord (supplied)

to headphone jack (stereo mini jack)

Unimatch plug adaptor (supplied)

to headphone jack (stereo phone jack)

Getting started

WALKMAN*, TV, VCR, etc.

* WALKMAN is a registered trademark of

Sony Corporation to represent Headphone Stereo products.

B When connecting to any jacks

other than the headphones jack

Connect to the LINE IN jacks on the transmitter.

Transmitter

to LINE IN jack

Connecting cord (supplied)

2 If your AC power adaptor is

equipped with a voltage selector, set it to the operating voltage in your area with a screw driver before connecting the AC power adaptor to an AC outlet.

3 Connect the supplied AC power

adaptor to the transmitter.

Transmitter

to an AC outlet

Left channel (white)

to any jacks other than headphone jack

Stereo, TV, VCR, etc.

Note

If your AV component has a stereo mini jack (LINE OUT), connect the stereo mini jack to LINE IN jack of the transmitter by using the connecting cord RK-G136 sold separately. If you connect LINE OUT jack of your AV component to PHONES IN jack of the transmitter, volume may be too low.

Right channel (red)

AC power adaptor (supplied)

to DC IN 9 V jack

Getting started

(Continued)

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 AC power adaptor.

Unified polarity plug

•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.

N Operating the system

Listening to a program

Before listening

To prevent your ears from being damaged, first lower the volume.

1 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 but they do not glow while the transmitter is charging the battery. 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.

Operating the system

2 Turn on the headphones.

The power indicator on the upper part of the right housing glows red.

3 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.

4 Start playback of the

component connected to the transmitter.

5 Adjust the volume.

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. To adjust the volume, move nearer toward the transmitter or orient the infrared emitters on the left housing towards the transmitter.

After listening to the programmes

Take off the headphones, and then turn off the power. You may also turn off the headphones automatically by placing them on the transmitter.

Charging automatically begins when you place the headphones on the transmitter

— Auto charge function

Placing the headphones on the transmitter automatically turns them off, and then charging starts. This eliminates the need for turning on/off every time you wear and take off the headphones.

Sound is automatically muted if noise increases

— Mute function

If the infrared rays are obstructed, or the headphones are used outside their 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

You may hear some noise when you disconnect the AC power adaptor from the transmitter before taking off the headphones.

Note

The brightness of the infrared emitters may not be uniform, however, this is not a malfunction.

Operating the system

The effective area

Replacing the ear

of the transmitter

The illustration below shows the approximate area covered by the infrared rays emitted from the transmitter.

Transmitter

Approx. 3 m

(118

/8 in.)

Approx. 3 m

(118

/8 in.)

Notes

•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.

Infrared ray

Approx. 7 m (23 ft.)

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.

1 Remove the old ear pad by

pulling it off.

2 Place the new ear pad around

the housing.

Operating the system

Additional information

Specifications

General

Modulation system

Frequency modulation

Carrier frequency

Right 2.8 MHz Left 2.3 MHz

Frequency response

18 – 22,000 Hz

Transmitter TMR-IF240R

Power source For details on the enable

Where purchased

U.S.A.

U.K.

European countries

Japan (exept for Japanese domestic model)

Other countries

Audio input Phono jacks/stereo mini jack Dimensions Approx. 154 × 78 × 99 mm

Mass Approx. 115 g (4.06 oz.)

voltage, see the nameplate of the AC power adaptor. DC IN 9 V jack accepts power supplied from the AC power adaptor for use on the following voltages:

Operating voltage

120 V AC, 60 Hz

230 – 240 V AC, 50 Hz

230 V AC, 50 Hz

110 V/120 V/220 V/ 240 V AC, 50/60 Hz

120 V AC, 60 Hz or 220 – 240 V AC, 50 Hz

(6 1/8 × 3 1/8 × 4 in.) (w/h/d)

Headphone MDR-IF240R

Power source Supplied rechargeable

nickel-metal hydride battery BP-HP550 or commercially available (size AAA) dry battery

Mass Approx. 125 g (4.41 oz.)

including battery

Supplied accessories

AC power adaptor (1) Connecting cord (approx. 1m, stereo mini

plug × 1 y phono plug × 2) (1) Rechargeable nickel - metal hydride battery

BP-HP550 (550 mAh min) (1) Unimatch plug adaptor (stereo mini jack

y stereo phone plug) (1) Operating instructions (1)

Optional accessories

• If you connect with a stereo mini jack (LINE OUT ) RK-G136 (1.5 m, stereo mini plug × 1 y stereo mini plug × 1)

• If sound is not output through the right channel when the supplied connecting cord is connected to the earphone jack.

Plug adaptor PC-236MS (stereo mini jack y monaural mini

plug)

• If you have lost the supplied plug adaptor.

Plug adaptor PC-234S (stereo mini jack y stereo phone plug)

• If you have lost the supplied connecting cord.

RK-G129 (1.5 m, stereo mini plug y phono plug × 2)

Design and specifications are subject to change without notice.

Additional information

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 and remove the battery to avoid damage caused by battery leakage and subsequent corrosion.

• Do not leave the cordless stereo headphones system in a location subject to direct sunlight, heat or moisture (It is recommended to use the headphones at a temperature of between 5˚C and 35˚C (between 41˚F and 95˚F).)

• Do not drop, hit or otherwise subject the transmitter or headphones to strong shocks of any kind. This could damage the product.

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, lower the volume or discontinue use.

• Excessive sound pressure from earphones and headphones can cause hearing loss.

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 nearest Sony dealer.

Be sure to bring the headphones and the transmitter to Sony dealer when requiring repair work.

Troubleshooting

No sound/Muffled sound

, Turn on the transmitter first, and then

put on the headphones.

, Check the connection of the audio/

video equipment or the AC power adaptor.

, Check that the audio/video equipment

connected to the transmitter is turned on.

, If the transmitter is connected to the

headphones jack, raise the volume of the audio/video equipment connected to the transmitter.

, The mute function is activated.

• Check if there is any object between the transmitter and the headphones.

• Use the headphones near the transmitter.

• Change the position and angle of the transmitter.

, The headphones’ power indicator light

dims, flashes or goes off.

• Charge the rechargeable battery if the headphones’ battery is weak, or replace dry battery with new ones. If the power indicator is still off after charging the battery, take the headphones to a Sony dealer.

, If you connect the LINE OUT jacks of

your connected equipment to the PHONES IN jacks of the transmitter, volume may be too low. Use the LINE IN jacks of the transmitter instead. See “Setting up the transmitter” .

Additional information

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