Sony Headphones MDR IF245RK User Manual

Battery cannot be charged/CHG  
How to use  
Effective area of the  
transmitter  
Using the headphones  
with separately-sold dry  
batteries  
indicator flashes, or does not light up  
Check that the right/left of the headphones and transmitter  
correspond, and put the headphones on the transmitter  
correctly.  
Install the supplied rechargeable nickel-metal hydride battery.  
Dry batteries and rechargeable batteries other than the  
supplied cannot be charged.  
If the CHG indicator does not light up even though you put the  
headphones on the transmitter and wait for a while, it may be  
the end of battery lifetime. You can order the supplied  
rechargeable battery BP-HP550-11 from the store where you  
purchased this system, or at your nearest Sony dealer.  
Insert the supplied rechargeable battery BP-HP550-11 into the left housing of the headphones.  
The illustration below shows the approximate area covered by  
the infrared rays emitted from the transmitter when you wear  
the headphones and face the transmitter.  
Observe the correct polarity when installing battery.  
1
2
4
Commercially available (size AAA) dry batteries can also be used  
to power the headphones. Install two batteries in the same  
manner as described in step 1 of “How to use.”  
When dry batteries are installed, the battery charge function is  
not activated.  
Top view  
Approx. 3 m (10 ft)  
Cordless Stereo  
Headphone System  
Battery life  
Battery  
Operating Instructions  
Approx. usage time1)  
Approx. 8 m  
(26 ft)  
Manual de instrucciones  
50 hours2)  
Sony alkaline battery LR03  
Precautions  
Transmitter  
Side view  
Insert the  
end first.  
1) at 1 kHz, 0.1 mW + 0.1 mW output  
2) Time may vary, depending on the temperature or conditions  
of use.  
When this system is not to be used for a long period of time,  
disconnect the AC adaptor from the AC outlet holding the  
plug, and remove the battery from the headphones to avoid  
damage caused by battery leakage and subsequent corrosion.  
Do not leave this system in a location subject to direct  
sunlight, heat or moisture.  
90°  
Rechargeable nickel-metal hydride  
battery BP-HP550-11 (supplied)  
Note  
Approx. 3 m (10 ft)  
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.  
This system is guaranteed for use in the temperature range of  
5 °C to 35 °C (41 °F to 95 °F).  
You may hear some noise when you disconnect the AC  
adaptor from the transmitter before taking off the  
headphones.  
Avoid exposure to temperature extremes, direct sunlight,  
moisture, sand, dust or mechanical shock.  
4-429-158-14(1)  
Connect the AC adaptor.  
Charge the headphones.  
Approx. 8 m  
(26 ft)  
3
©2012 Sony Corporation Printed in China  
To AC  
outlet  
Transmitter  
Tips for connection  
MDR-IF245RK  
Do not connect to the AUDIO IN 1 and AUDIO IN 2 jacks at the  
same time. If you connect two A/V components to both jacks  
at the same time, both of the audio signals may result in mixed  
output.  
(Red)  
Complete when  
indicator turns off.  
(Off)  
Notes on headphones  
90°  
To reduce the risk of hearing damage  
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 in infrared  
ray communication and not a malfunction.  
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. However, depending on  
circumstances, the area covered by the infrared rays may be  
smaller than illustrated.  
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  
other strong light. The sound may be interrupted.  
Plasma displays may interfere with normal operation of this  
system.  
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.  
When you connect the connecting cable directly to an  
earphone jack (monaural mini jack), the audio signal may not  
be output through the right channel.  
English  
Cordless Stereo Headphone System  
Contact  
points  
Caring for others  
Checking the included  
items  
Features  
Keep the volume at a moderate level. This will allow you to hear  
outside sounds and to be considerate to the people around you.  
Thank you for purchasing the Sony MDR-IF245RK Cordless Stereo  
Headphone System. Before operating the unit, please read this  
manual thoroughly and retain it for future reference.  
Some features are:  
Tips for volume setting  
If you have any questions or problems concerning the system  
that are not covered in this manual, please consult your nearest  
Sony dealer.  
If you connect the transmitter to the headphone jack of the A/  
V component, set the volume of the A/V component as high as  
possible but not so high that the audio signal becomes  
distorted.  
Contact  
pins  
Lightweight headphones for long time listening comfort.  
Approx. 28 hours playback with supplied Ni-MH rechargeable  
battery. AAA alkaline batteries (not supplied) can also be used  
as alternative power.  
Be sure to bring the headphones and the transmitter to the Sony  
dealer when requiring repair work.  
When watching videos, be careful not to raise the volume too  
high in quiet scenes. You may hurt your ears when a loud  
scene is played.  
Battery is automatically charged by placing the headphones  
on the transmitter.  
Connect the A/V component, following hookup or below.  
Transmitter TMR-IF245R (1)  
40 mm driver units for powerful, expressive sound.  
Muting function reduces noise disturbance.  
Self-adjusting headband mechanism eliminating the need for  
headband adjustment.  
Specifications  
Using the headphone jack of the A/V component  
Replacing the earpads  
The brightness of the infrared emitters may not be uniform;  
however, this is not a malfunction.  
Transmitter (TMR-IF245R)  
Headphones MDR-IF245R (1)  
Modulation  
FM stereo  
The earpads are replaceable. If the earpads become dirty or  
worn out, replace them as illustrated below. The earpads are not  
commercially available. You can order replacements from the  
store where you purchased this system, or at your nearest Sony  
dealer.  
Up to 8 meters (26 feet) reception range.  
Carrier frequency Right 2.8 MHz  
Left 2.3 MHz  
Frequency response  
10 Hz – 20,000 Hz  
About muting function  
Headphone jack  
(Stereo mini jack)  
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. In such a case, this function mutes any  
sound from the headphones to avoid potential ear damage as a  
result of noise. Sound is automatically restored when you move  
nearer the transmitter or remove the obstruction.  
AC adaptor (1)  
Connecting cable (stereo mini  
plug pin plug × 2), 1 m (1)  
Audio inputs  
Power requirements  
Dimensions  
Mass  
Pin jacks (left/right)  
Stereo mini jack  
R (red)  
L (white)  
Stereo mini  
plug  
DC 12 V (from the supplied AC adaptor)  
TV, Digital music player, etc.  
Approx. 140 mm × 60 mm × 105 mm  
Rechargeable nickel-metal  
hydride battery  
(BP-HP550-11) (1)  
(5 1/2 in × 2 3/8 in × 4 1/7 in) (w/h/d)  
Approx. 200 g (7.06 oz)  
Tips for charging  
Charge supplied battery first  
The supplied rechargeable nickel-metal hydride battery is not  
charged from the first time you use it. Be sure to charge them  
before use.  
Headphones (MDR-IF245R)  
1
Remove the old earpad  
by pulling it off.  
2
Place the new earpad  
around the housing.  
Frequency response  
Using the audio out (L/R) jacks of the A/V component  
10 Hz – 24,000 Hz  
Power source  
Supplied rechargeable nickel-metal hydride  
battery BP-HP550-11, or commercially  
available (size AAA) dry batteries  
Audio out  
(L/R) jacks  
WARNING  
L (white)  
R (red)  
About auto charge function  
Placing the headphones on the transmitter automatically turns  
them off, then charging starts. This eliminates the need for  
turning on/off every time you wear and take off the headphones.  
Troubleshooting  
Mass  
Approx. 200 g (7.06 oz) including battery  
If you run into any problems using this system, use the following  
checklist. Should any problem persist, consult your nearest Sony  
dealer.  
To reduce the risk of fire or electric shock, do not expose this  
apparatus to rain or moisture.  
Note  
Included items  
Transmitter TMR-IF245R  
Headphones MDR-IF245R  
AC adaptor (12 V) (1)  
This equipment has been tested and found to comply with the  
limits for a Class B digital device, pursuant to Part 15 of the FCC  
Rules. These limits are designed to provide reasonable  
protection against harmful interference in a residential  
installation. This equipment generates, uses and can radiate  
radio frequency energy and, if not installed and used in  
accordance with the instructions, may cause harmful  
interference to radio communications.  
However, there is no guarantee that interference will not occur  
in a particular installation. If this equipment does cause harmful  
interference to radio or television reception, which can be  
determined by turning the equipment off and on, the user is  
encouraged to try to correct the interference by one or more of  
the following measures:  
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.  
Stereo mini plug  
If CHG indicator is not lit  
Check if the right and left headphones are rested on the  
transmitter correctly. Take off the headphones and place them  
on the transmitter again so that the headphonescontact points  
meet the transmitter’s contact pins.  
No sound/Low sound  
Turn on the headphones.  
Connecting cable (stereo mini plug pin plug × 2), 1 m  
Check the connection of the A/V component or the AC  
adaptor.  
(39 3/8 in) (1)  
Stereo system, Blu-ray Disc player, DVD player, TV*, etc.  
* In case of no headphone jack.  
Do not expose the batteries (battery pack or batteries installed)  
to excessive heat such as sunshine, fire or the like for a long time.  
Rechargeable nickel-metal hydride battery BP-HP550-11  
(550 mAh min) (1)  
Card warranty (1)  
Check that the A/V component is turned on.  
If you connect the transmitter to an A/V component using the  
headphone jack, raise the volume level on the connected A/V  
component within the range where the sound is not distorted.  
Check that the infrared sensors of the headphones are not  
covered with your hands or hair.  
To avoid electrical shock, do not open the cabinet. Refer  
servicing to qualified personnel only.  
Charging and usage time  
Depending on the remaining battery status, it takes approx. 30  
minutes to 7 hours to recharge.  
Operating Instructions (this manual) (1)  
If you want to receive audio on the headphones while at the same time hearing audio from the television speakers:  
connect the transmitter to your Cable Box/Satellite Box rather than your television.  
Do not install the appliance in a confined space, such as a  
bookcase or built-in cabinet.  
Design and specifications are subject to change without notice.  
Approx. charging time  
Approx. usage time1)  
Check that there is no object between the transmitter and the  
headphones.  
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.  
7 hours2)  
Wear the headphones.  
Start playback of the A/V component.  
28 hours3)  
Reorient or relocate the receiving antenna.  
Use the headphones near the transmitter, or change the  
position of the transmitter.  
Charge the supplied rechargeable battery, or replace dry  
batteries with new ones. If the POWER indicator is still off after  
charging, take the headphones to a Sony dealer.  
Raise the headphone volume.  
Increase the separation between the equipment and receiver.  
Connect the equipment into an outlet on a circuit different  
from that to which the receiver is connected.  
5
6
Before listening  
1) at 1 kHz, 0.1 mW + 0.1 mW output  
2) hours required to fully charge an empty battery  
3) Time may vary, depending on the temperature or conditions  
of use.  
To reduce the risk of hearing damage, first lower the volume.  
Excessive sound pressure from earphones and headphones can  
cause hearing loss.  
Consult the dealer or an experienced radio/ TV technician for  
help.  
Tactile dot  
Up  
AC adaptor is not disconnected from the mains as long as it is  
connected to the AC outlet, even if the unit itself has been  
turned off.  
To recharge supplied battery after use  
Place the headphones on the transmitter after use. The CHG  
indicator lights up, then charging starts.  
When charging is complete, there is no need to remove the  
headphones from the transmitter.  
Distorted or intermittent sound  
(sometimes with noise)  
Use the headphones near the transmitter, or change the  
position of the transmitter.  
Down  
The nameplate is located on the bottom exterior.  
You are cautioned that any changes or modifications not  
expressly approved in this manual could void your authority to  
operate this equipment.  
If you connect the transmitter to an A/V component using the  
headphone jack, lower the volume level on the connected A/V  
component within the range where the sound is not distorted.  
Charge the supplied rechargeable battery, or replace dry  
batteries with new ones. If the POWER indicator is still off after  
charging, take the headphones to a Sony dealer.  
Remaining battery  
To check the remaining battery charge of the headphones, turn  
on the headphones, and check the POWER indicator. The battery  
is still serviceable when the indicator lights up red.  
RECYCLING NICKEL METAL HYDRIDE  
BATTERIES  
Charge the headphones if the POWER indicator turns off, dims,  
flashes, or the sound becomes distorted or noisy.  
Tactile dot  
Loud background noise  
Notes  
Insert the AC adaptor plug firmly.  
Be sure to use the supplied AC adaptor. Using AC adaptors  
with different plug polarity or other characteristics can cause  
product failure.  
Use the headphones near the transmitter, or change the  
position of the transmitter. (As you move away from the  
transmitter, more noise is likely to be heard. This is inherent in  
infrared ray communication and not a malfunction.)  
Check that there is no object between the transmitter and the  
headphones.  
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.  
Lower volume  
Check that the infrared sensors on the headphones are not  
Unified  
polarity plug  
About the infrared sensors  
After use  
Take off the headphones, then turn off the power.  
If no signal or low signal is  
input for about 10 minutes  
When no signal is input for about 10 minutes, the  
transmitter turns off automatically*. The infrared  
emitters of the transmitter also turn off. The  
transmitter restarts after receiving an audio signal  
again.  
The transmitter may also turn off if low signal is  
input for about 10 minutes. In this case, raise the  
volume of the connected A/V component within  
the range where the sound is not distorted, then  
lower the volume of the headphones.  
* If signal noise is output from the connected A/V  
component, the transmitter may not turn off,  
even when no audio signal is input.  
For more information regarding recycling of rechargeable  
batteries, call toll free  
covered with your hands or hair.  
The infrared sensors of the headphones are located as illustrated below.  
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.  
If you connect the transmitter to an A/V component using the  
headphone jack, raise the volume level on the connected A/V  
component within the range where the sound is not distorted.  
Charge the supplied rechargeable battery, or replace dry  
batteries with new ones. If the POWER indicator is still off after  
charging, take the headphones to a Sony dealer.  
If 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 capacity may decrease if the headphones are  
turned on and placed on the transmitter with the AC adaptor  
disconnected.  
Caution: Do not handle damaged or leaking Nickel Metal  
Hydride batteries.  
The transmitter automatically turns off while charging the  
battery.  
This system is designed to charge only the supplied  
rechargeable battery BP-HP550-11 for safety. Note that other  
types of rechargeable battery cannot be charged with this  
system.  
If dry batteries are installed, they cannot be charged.  
Do not attempt to use the supplied rechargeable battery BP-  
HP550-11 for other components. It is for use with this system  
only.  
Use the transmitter in a position facing the headphones.  
Charge in an environmental temperature of between 5 °C and  
The sound cuts off  
If the infrared sensors of one housing are covered by your hands (when adjusting the  
volume, etc.), the muting function may be activated to reduce noise caused by  
obstruction of the infrared rays. To restore sound, move nearer the transmitter, or  
orient the sensor of the uncovered housing toward the transmitter.  
35 °C (between 41 °F and 95 °F).  
The transmitter turns off if no signal or low signal is input for  
10 minutes. If you connect the transmitter to an A/V  
component using the headphone jack, raise the volume level  
on the connected A/V component within the range where the  
sound is not distorted.  
When the battery life reduces to half, this may be the end of  
battery lifetime. The supplied rechargeable battery BP-HP550-  
11 is not commercially available. You can order the battery  
from the store where you purchased this system, or at your  
nearest Sony dealer.  
 

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