Sony MDR-IF240RK - Headphones - Binaural User manual

SONY, 3-2,_-_o_--!2!
Cordless Stereo
Headphone
System
[e]_.
Operating Instructions
Mode d'emploi
Manual de instrucciones
lt_'|
MDR-IF240RK
© 2003 Sony Corporation

For the customers in the U.S.A and
WARN IN(S Canada
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.
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 MDRqF240R
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.
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 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).
2G°I

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 reception range of up to 7m
(23 ft.).
• 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.
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
3GB

1_ _Getting started
Unpacking
Check that you have the following
items before using the headphones:
• The transmitter TMR-IF240R (1)
• The headphones MDRqF240R (1)
• AC power adaptor (1)
• Connecting cord (1)
(phono plugs _ stereo mini plug}
• Unimatch plug adaptor (1)
(stereo minijack_=>stereo phone
plug)
• Rechargeablenickel-metal hydride
battery (1)
4G°I

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, place them
on the transmitter.
1Open the battery compartment
lid of the left housing.
2Insertthe 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.
3 Close the battery compartment
lid.
\\
4If 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)
I 5GB

5Connect the supplied AC power
adaptor to the transmitter.
Transmitter
to an AC outlet
AC power _-,
adaptor
(supplledl
to DC IN 9V jack
6Rest 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.
jRight
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 transmitfer's contact pin. Take
off the headphones and place them on
the transmitter again so that the
indicator lights up.
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
104°F).
Charging and usage hours
Approx. Approx. usage
charging hours time .1
1hour 1 hour and 45
minutes .3
16 hours .2 35 hours .3
*_ 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.
6G°I

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.
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 Approx. hours *_
Sony alkaline battery 60 hours .2
LR03/AM-4(N)
Sony mangane_ 28 hours .2
battery R03/UM-4
(NU)
*_at i kHz, 1 mW+l mW output
*_Time stated above may vary, depending
on the temperature or conditions of use.
I7GB

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.
1Connect the transmitter to an
audio/video component.
Select method [] or 1"_, according
to the output jack type of the AV
component you use.
[] When connecting to a
headphones jack
Connect to the PHONES 1N jack on
the transmitter.
Transmitter
to PHONES IN jacks
Left channel (white)
Connecting cord
(supplied)
to headphone jack
(stereo mini jack)
_Otheead Phh°nneeiacCkl _" _
WALKMAN*, TV,
VCR, etc.
* WALKMAN is a registered trademark of
Sony Corporation to represent Headphone
Stereo products.
sG°I

[] When connecting to any jacks
other than the headphones jack
Connect to the LINE IN jacks on the
transmitter.
Transmitter
2If your AC power adaptor is
equipped with avoltage
selector, set it to the operating
voltage in your area with a
screw driver before connecting
the AC power adaptor to an AC
outlet.
to LINE IN jack
Connecting cord
(supplied)
Left channel Right channel
(white) _(red)
to any jacks
_teha_pthane jack/_V_J
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 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.
3 Connect the supplied AC power
adaptor to the transmitter.
Transmitter to an AC
outlet
AC power --_
adaptor
(supplied)
to DC IN 9 V jack
(Continued)
I 9GB

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 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 4=>
monaural mini plug) between the
connecting cord and tho earphone jack.
Operating the system
Listening to a
program
Before listening
To prevent your ears from being
damaged, first lower the volume.
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.
2Turn on the headphones.
The power indicator on the upper
part of the right housing glows red.
3Put on the headphones.
Be sure to put the right housing (R)
on your right ear and the left
housing (L) on your left ear.
10G

4Start playback of the
component connected to the
transmitter.
5Adjust 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.
Note
You may hear some noise when you
disconnect the AC power adaptor from the
transmitter before taking off the headphones.
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.
111GB

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. 3rn
Approx. 3rn
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.
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.
1Remove the old ear pad by
pulling it off.
2 Place the new ear pad around
the housing.
12GI

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 DC IN 9 V jack accepts
power supplied from the AC
power adaptor (or use on the
following voltages:
Where Operating
purchased voltage
U.S.A. 120 V AC, 60 Hz
U.K. 230 240 V AC, 50 Hz
European countries 220 230 V AC, 50 Hz
Japan (exept for 110 V/120 V/220 V/
Japanese 240 V AC, 50/60 Hz
domestic model)
Other countries 220 230 V AC, 50/
00 Hz or 120 V AC,
60 Hz
Audio input
Dimensions
Mass
Phono jacks/stereo mini jack
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
Power source Supplied rechargeable
nickel-metal hydride batlery
BP-HP550 or commercially
available
(size AAA) dry battery
Mass Approx. 125 g (4.41 oz.j
including battery
Supplied accessories
AC power adaptor (1)
Connecting cord (approx. lm, stereo mini
plug × 1 _ phono plug x 2) (1)
Rechargeable nickel - metal hydride battery
BP-HP550 (550 mAh min) (1)
Unimatch plug adaptor (stereo mini jack
stereo phone plug) (1)
Operating instructions (1)
Optional accessories
• 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
(stereo mini jack *--* monaural mini
plug)
• If you have lost the supplied plug
adaptor.
Plug adaptor PC-234S
(stereo mini jack _ stereo phone plug)
• If you have lost the supplied connecting
cord.
RK-GI29
(1.5 m, stereo mini plug _ phono plug
x 2)
Design and specifications are subject to
change without notice.
13GB

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.
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
Oil.
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".
14G

Distorted sound
If the transmitter is connected to the
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."
Loud background noise
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 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.
,,_ 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
"_ 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.
_1 15GB

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