3-248-361-13(1)

Cordless Stereo Headphone System
Operating Instructions Mode demploi Manual de instrucciones

GB FR ES

MDR-IF240RK

2003 Sony Corporation

For customers in the U.S.A and Canada

WARNING

To prevent fire or shock hazard, do not expose the unit to rain or moisture.
To prevent fire or shock hazard, 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.
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. 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 city office, your household waste disposal service or the shop where you purchased the product.

Owners 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.
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).
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.

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.. 4 Charging the supplied rechargeable battery... 5 Setting up the transmitter.. 8

Operating the system

Listening to a program.. 10 The effective area of the transmitter.. 12 Replacing the ear pads.. 12

Additional information

Specifications. 13 Precautions.. 14 Troubleshooting. 14

N Getting started

The headphones MDR-IF240R (1)

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)
Unimatch plug adaptor (1) (stereo mini jack h stereo phone plug)
Rechargeable nickel-metal hydride battery (1)
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.
Close the battery compartment lid.
Open the battery compartment lid of the left housing.
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.
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
Connect the supplied AC power adaptor to the transmitter.
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.
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 0C and 40C (between 32 F and 104F).

Transmitter to an AC outlet
AC power adaptor (supplied)

to DC IN 9V jack

Rest the headphones on the transmitter so that the headphones contact point meets the transmitters 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

Charging and usage hours Approx. charging hours

1 hour

Approx. usage time*1
1 hour and 45 minutes*hours*3
Contact point Contact pin Left housing

16 hours*2

*1 at 1 kHz, 1 mW +1 mW output *2 hours required to fully charge empty battery *3 Time stated above may vary, depending on the temperature or conditions of use.
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 transmitters contact pin. Take off the headphones and place them on the transmitter again so that the indicator lights up.
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.
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.
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. Battery life Battery Approx. hours*1

Sony alkaline battery 60 hours*2 LR03/AM-4(N) Sony manganese battery R03/UM-4 (NU) 28 hours*2
*1 at 1 kHz, 1 mW+1 mW output *2 Time stated above may vary, depending on the temperature or conditions of use.
Setting up 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.
A When connecting to a headphones jack
Connect to the PHONES IN jack on the transmitter.

Transmitter

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.
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) 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.

to LINE IN jack

Connecting cord (supplied)
Left channel (white) to any jacks other than headphone jack
Right channel (red) AC power adaptor (supplied)
Stereo, TV, VCR, etc. to DC IN 9 V jack
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.

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 AC power adaptor.

Unified polarity plug

Listening to a program
Before listening To prevent your ears from being damaged, first lower the volume.
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 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.

Turn on the headphones.

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

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.
Start playback of the component connected to the transmitter. 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.
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 The brightness of the infrared emitters may not be uniform, however, this is not a malfunction.
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.
Note You may hear some noise when you disconnect the AC power adaptor from the transmitter before taking off the headphones.
The effective area of the transmitter
The illustration below shows the approximate area covered by the infrared rays emitted from the transmitter.
Transmitter Infrared ray Approx. 3 m (118 1/8 in.)

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.

Approx. 7 m (23 ft.)

Remove the old ear pad by pulling it off.
Approx. 3 m (118 1/8 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.
Place the new ear pad around the housing.

N Additional information

Supplied accessories

Specifications

General
Modulation system Frequency modulation Carrier frequency Right 2.8 MHz Left 2.3 MHz Frequency response 18 22,000 Hz
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.

Transmitter TMR-IF240R

Power source DC IN 9 V jack accepts power supplied from the AC power adaptor for use on the following voltages:

Where purchased

U.S.A. U.K. European countries Japan (exept for Japanese domestic model) Other countries

Operating voltage

120 V AC, 60 Hz V AC, 50 Hz V AC, 50 Hz 110 V/120 V/220 V/ 240 V AC, 50/60 Hz V AC, 50/ 60 Hz or 120 V AC, 60 Hz Phono jacks/stereo mini jack Approx. 99 mm (6 1/1/in.) (w/h/d) Approx. 115 g (4.06 oz.)

Audio input Dimensions

Headphone MDR-IF240R
Power source Supplied rechargeable nickel-metal hydride battery BP-HP550 or commercially available (size AAA) dry battery Approx. 125 g (4.41 oz.) including battery

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 5C and 35C (between 41F and 95F).) Do not drop, hit or otherwise subject the transmitter or headphones to strong shocks of any kind. This could damage the product.

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.
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.

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.

Distorted sound

, If the transmitter is connected to the headphones jack, lower the volume of the audio/video equipment connected to 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 headphone jacks of your connected equipment to the LINE IN jack of the transmitter, sound may be distorted when raising the volume. Use the PHONES IN jacks of the transmitter instead. See Setting up the transmitter.
, When you have another transmitter, check if more than one transmitters are used at the same time. Turn off other transmitter or move to a place outside the range of this transmitter.
The battery cannot be charged

Printed in Malaysia

3-2,_-_o_--
Cordless Stereo Headphone System
Operating Mode Manual Instructions [e]_.
d'emploi de instrucciones

MDR-IF240RK

2003 Sony Corporation
For the customers in the U.S.A and

WARN I N(S

To prevent fire or shock hazard, do not expose the unit to rain or moisture.
To prevent fire or shock hazard, 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 confined built-in cabinet. 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-1F240RK Transmitter TMRqF240R Headphones 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.

Canada

RECYCLING NICKEL METAL HYDRIDE BATTERIES Nickel Metal Hydride batteries are recyclable. You can help preserve our environment by returning your used recbargeable batteries to the collection and recycling location nearest you.
For more information of rechargeable 1-800-822-8837, or visit http: //www.rbrc.org/ Caution: Do not handle damaged or leaking Nickel Metal Hydride batteries. regarding recycling

in a or

space, such as a bookcase

batteries,

call toll free
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).

MDRqF240R

Welcome!
Thank you for purchasing the Sony MDRqF240RK Cordless Stereo Headphone System. Before operating the unit, please read this manual thoroughly and retain it for future reference. The MDRqF240RK 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 (23 ft.). reception range of up to 7m

Table of contents

Getting started Unpacking.. 4 Charging the supplied rechargeable battery... 5 Setting up the transmitter.. 8 Operating the system Listening to a program.. 10 The effective area of the transmitter.. 12 Replacing Additional the ear pads.. 12 information 14
Specifications. Precautions.. Troubleshooting.
Self_adjusting headband mechanism eliminating th_ 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.

1_ _ Getting

started
The headphones MDRqF240R (1)

Unpacking

Check that you have the following items before using the headphones: The transmitter TMR-IF240R (1)

AC power

adaptor
Connecting cord (1) (phono plugs _ stereo mini plug}
Unimatch plug adaptor (1) (stereo minijack_=>stereo phone plug)
Rechargeablenickel-metal battery (1)

hydride

Charging the supplied rechargeable battery
The supplied rechargeable nickebmetal hydride battery is not charged from the first time you use it. Be sure to charge them before use. To charge the headphones, on the transmitter. place them 3 Close the battery lid. \ compartment
Open the battery compartment lid of the left housing.
Insertthe supplied rechargeable nickel-metal hydride battey into the battery compartment matching _) terminal on the battery to _) on the compartment. Do not use rechargeable battery other than the supplied one.
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.

(Continued)

Connect the supplied AC power adaptor to the transmitter.
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.
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 BP* HP550 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 _Fand 104F).
Transmitter to an AC outlet
AC power adaptor (supplledl

to DC IN 9V jack

Rest the headphones transmitter

on the

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.

j Right

Charging Approx. charging 1 hour 16 hours.2

and usage hours

hours Approx. time.1

minutes.3

1 hour and hours.3

Contact point

Contact pin Left housing
*_ at 1 kHz, 1 mW +1 mW output _: hours required to fully charge empty battery *_ Time stated above may vary, depending on the temperature or conditions of use.

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 transmitfer's contact pin. Take off the headphones and place them on the transmitter again so that the indicator lights up.
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 purcha_d this system, or at your nearest Sony dealer.

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.
Using the headphones with 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.
Battery Battery Sony alkaline battery LR03/AM-4(N) Sony mangane_ battery R03/UM-4 (NU) life Approx. 60 hours.2 hours *_

28 hours.2

*_ at i kHz, 1 mW+l mW output *_ Time stated above may vary, depending on the temperature or conditions of use.
Setting up the transmitter
The transmitter is equipped with two input jacks, which allows for connection to the specified output jacks: PHONES 1N to the headphone jack, and LINE 1N to the LINE OUT jacks of your connected equipment.
When connecting to a headphones jack Connect to the PHONES 1N jack on the transmitter.

Transmitter

Connect

the transmitter

to PHONES IN jacks Left channel (white)
audio/video component. Select method [] or 1"_, according to the output jack type of the AV component you use.
Connecting (supplied) cord
to headphone jack (stereo mini jack)
_Otheead Phhnneei acCkl _"

WALKMAN*, VCR, etc.

* WALKMAN is a registered trademark of Sony Corporation to represent Headphone Stereo products.
When connecting to any jacks other than the headphones jack Connect to the LINE IN jacks on the transmitter.
If your AC power equipped with

a voltage

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

to LINE IN jack

Connect the supplied adaptor

AC power

to the transmitter.

to an AC

outlet

Connecting (supplied)

cord Transmitter
Left channel (white) to any jacks _teha_pthane jack/_V_J _
Right channel (red) AC power adaptor (supplied) --_
Stereo, TV, VCR, etc. to DC IN 9 V jack
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 KK_G136 sold separately. If you connect LINE OUT jack of your AV component to PHONES 1N jack of the transmitter, volume may be too low.

Operating

Notes Do not connect to the PHONES 1N 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

system

Listening

program
Before listening To prevent your ears from being damaged, first lower the volume. Turn on the audio/video
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 4=> monaural mini plug) between the connecting cord and tho earphone jack.

component transmitter.

connected

to the

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.
Turn on the headphones. The power indicator on the upper part of the right housing glows red.
Put on the headphones. Be sure to put the right housing on your right ear and the left housing (L) on your left ear. (R)
Start playback of the component transmitter. connected to the
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 noise increases Mute function muted if

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 programmes
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 more than approximately minutes The transmitter
Note The brightness of the infrared emitters may not be uniform, however, this is not a malfunction.
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.

turns off automatically.

The effective area of the transmitter
The illustration below shows the approximate area covered by the infrared rays emitted from the transmitter.
Transmitter Infrared ray Approx. 3 rn

Replacing pads

the ear
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.
Remove the old ear pad by pulling it off.

Approx. 3 rn

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 _l_ors 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 dearest sound. Do not use this system in areas expo_d to direct sunlight or strong light. The sound may be interrupted. Plasma displays may interfere with normal operation of this system.

2 Place the new ear pad around the housing.

Additional

information

Supplied accessories

adaptor (1) cord (approx. lm, stereo mini phono plug x 2) (1) battery AC power Connecting plug 1 _

Specifications

General
Modulation system Frequency Carrier frequency Right 2.8 MHz Left 2.3 MHz Frequency response 18 22,000 Hz modulation
Rechargeable nickel - metal hydride BP-HP550 (550 mAh min) (1)
Unimatch plug adaptor (stereo mini jack stereo phone plug) (1) Operating instructions (1)

Optional

accessories

Power source

TMR-IF240R
DC IN 9 V jack accepts power supplied from the AC power adaptor (or use on the following voltages:
If you connect with a stereo mini jack (LINE OUT ) RK-GI36 (1.5 m, stereo mini plug x 1 *--* stereo mini plug x 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 mini plug (stereo mini jack *--* monaural plug) If you have lost the supplied adaptor. Plug adaptor PC-234S stereo phone plug) connecting (stereo mini jack _

Where purchased

U.S.A. U.K. European countries

Operating voltage

120 V AC, 60 Hz 240 V AC, 50 Hz 230 V AC, 50 Hz
Japan (exept for Japanese domestic model) Other countries
110 V/120 V/220 V/ 240 V AC, 50/60 Hz V AC, 50/ 00 Hz or 120 V AC, 60 Hz Phono jacks/stereo mini jack
If you have lost the supplied cord. RK-GI29 (1.5 m, stereo x 2) mini plug _

Audio input Dimensions

Design and specifications change without notice.

are subject to

Approx. 154 x 78 x 99 mm (6 1/8 x 3 1/8 x 4 in.) (w/h/d) Approx. 115 g (4.06 oz.)

Headphone

MDR-IF240R
Supplied rechargeable nickel-metal hydride batlery BP-HP550 or commercially available (size AAA) dry battery Approx. 125 g (4.41 oz.j including battery

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 5C and 35C (between 41F and 95F).) Do not drop, hit or otherwise subject the transmitter or headphones to strong shocks of any kind. This could damage the product.

Troubleshooting

sound/Muffled

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 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.

Caring

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.
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".

Distorted

is connected to the

If the transmitter

When you have another transmitter, check if more than one transmitters used at the same time. Turn off other transmitter a place outside transmitter.
headphones jack, lower the volume of the audio/video equipment conl_ected to 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 headphone jacks of your connected equipment to the LINE IN jack of the transmitter, sound may be distorted when raising the volume. Use the PHONES IN jacks of the transmitter instead. See "Setting up the transmitter."

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the range of this

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battery

cannot

charged
Check if the charging indicator light is on. If not, put the headphones on the transmitter correctly so that the charging indicator light is on. Dry battery is installed. Install the supplied rechargeable nickel-metal hydride battery. Rechargeable battery other than the supplied is installed. Install the supplied rechargeable nickel-metal hydride battery.

background

Move closer to the transmitter. (As you move away from the transmitter, more noise is likely to be heard. This is inherent in infrared ray communication and does not mean that there is a problem with the unit itself.) Check that there is no object between the transmitter and the headphones. Check that the infrared sensors are not covered with your hands or hair. If you use the headphones by a window where the sunlight is too strong, draw the curtains/blinds to shut out the direct sunlight, or use the headphones away from the sunlight. Change the position or angle of the transmitter. If the transmitter is connected to the headphones jack, raise the volume of the audio/video equipment conl_ected to the transmitter. The headphones' power indicator dims, flashes or goes off. light
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.

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