Sony MDR-IF140K User manual

Cordless Stereo
Headphone
System
© 2009 Sony Corporation
Operating Instructions
3-248-366-62(1)
MDR-IF140K
CS
CT
GB
KR

2GB
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.
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).

3GB
Welcome!
Thank you for purchasing the Sony
MDR-IF140K Cordless Stereo
Headphone System. Before operating
the unit, please read this manual
thoroughly and retain it for future
reference.
The MDR-IF140K is a cordless stereo
headphone system using infrared
transmission. You can enjoy listening to
a programme free from the restriction
of the headphones cord by simply
connecting the transmitter to a TV, or
audio components equipped with a
headphones jack or a line output jack.
•Cordless, noiseless infrared headphone
system resistant to external noise, etc.
•Wide infrared reception range of up to 7 m
(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.
Table of contents
Getting started
Unpacking ........................................... 4
Inserting the battery .......................... 5
Setting up the transmitter ................. 6
Operating the system
Listening to a programme ................ 8
The effective area of the
transmitter ..................................... 10
Replacing the ear pads .................... 10
Additional information
Specifications .................................... 11
Precautions ....................................... 12
Troubleshooting ............................... 13 GB

Getting started
4GB
NGetting started
Unpacking
Check that you have the following
items before using the headphones:
• The transmitter TMR-IF130 (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)
• The headphones MDR-IF140 (1)

Getting started 5GB
Inserting the
battery
1Open the battery compartment
lid of the left housing.
2Insert the size AAA dry battery
into the battery compartment
matching 3terminal on the
battery to 3in the
compartment.
3Close the battery compartment
lid.
Battery life
*1at 1 kHz, 1 mW+1 mW output
*2Time stated above may vary, depending
on the temperature or conditions of use.
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.
When to replace the battery
When the battery becomes weak, the
power indicator light dims, or sound
becomes distorted or noisy. Replace the
battery with new one as soon as
possible.
Battery
Sony alkaline
battery LR03/
AM-4(N)
Sony manganese
battery R03/UM-4
(NU)
Approx. hours*1
60 hours*2
28 hours*2

Getting started
6GB
RLINE IN
DC IN 9V
L
PHONES IN
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 headphones jack, and LINE IN
to the LINE OUT jacks of your
connected equipment.
1Connect the transmitter to an
audio/video component.
Select method Aor B, according
to the output jack type of the AV
component you use.
*WALKMAN is a registered trademark of
Sony Corporation.
Transmitter
Unimatch plug
adaptor (supplied)
WALKMAN*, TV,
VCR, etc.
AWhen connecting to a
headphones jack
Connect to the PHONES IN jack on
the transmitter.
Connecting cord
(supplied)
to PHONES IN jacks
to headphones jack
(stereo mini jack)
to headphones jack
(stereo phone jack)
Left channel
(white)
Right channel
(red)

Getting started 7GB
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.
BWhen connecting to any jacks
other than the headphones jack
Connect to the LINE IN jacks on the
transmitter.
2If 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.
3Connect the transmitter to the
power source.
(Continued)
RLINE IN
DC IN 9V
L
PHONES IN
Transmitter
to LINE IN jack
Right channel
(red)
Left channel
(white)
to any jacks other
than headphones jack
Connecting cord
(supplied)
Stereo, TV, VCR, etc.
RLINE IN
DC IN 9V
L
PHONES IN
to DC IN 9
V jack
Transmitter
to an AC
outlet
AC power
adaptor
(supplied)

Operating the system
8GB
NOperating the system
Listening to a
programme
Before listening
To prevent your ears from being
damaged, first lower the volume.
1Turn 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. If
the transmitter is connected to the
headphones 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.
Notes
•Do not connect to the PHONES IN jack and
LINE IN jack at the same time. If you
connect two audio/video 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 other AC power adaptor.
•When you connect the connecting cord
directly to a headphones 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 headphones jack.
Unified
polarity plug

Operating the system 9GB
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. In this case, 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.
Note
You may hear some noise when you
disconnect the AC power adaptor from the
transmitter before taking 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.

Operating the system
10GB
The effective area
of the transmitter
The illustration below shows the
approximate area covered by the
infrared rays emitted from the
transmitter.
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.
45°
45°
Transmitter
Infrared ray
Approx. 3 m
(118 1/8in.)
Approx. 3 m
(118 1/8in.)
Approx. 7 m
(23 ft.)
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.

Additional information
11GB
N 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-IF130
Power source DC IN 9 V jack accepts
power supplied from the AC
power adaptor for use on the
following voltages:
Audio input Phono jacks/stereo mini jack
Dimensions Approx. 152 ×38 ×72 mm
(6 ×1 1/2×2 3/4 in.)
(w/h/d)
Mass Approx. 75 g (2.7 oz.)
Headphones MDR-IF140
Power source Dry battery (size AAA)
Mass Approx. 125 g (4.41 oz.)
including battery
Supplied accessories
AC power adaptor (1)
Connecting cord (approx. 1 m, stereo mini
plug ×1 yphono plug ×2) (1)
Unimatch plug adaptor (stereo mini jack
ystereo 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 ystereo
mini plug ×1)
•If sound is not output through the right
channel when the supplied connecting
cord is connected to the headphones
jack.
Plug adaptor PC-236MS
(stereo mini jack ymonaural mini
plug)
•If you have lost the supplied plug
adaptor.
Plug adaptor PC-234S
(stereo mini jack ystereo phone plug)
•If you have lost the supplied connecting
cord.
RK-G129
(1.5 m, stereo mini plug yphono plug
×2)
Design and specifications are subject to
change without notice.
Where
purchased
U.S.A.
U.K.
European countries
Japan (except for
Japanese domesitic
model)
Other countries
Operating
voltage
120 V AC, 60 Hz
230 V AC, 50 Hz
230 V AC, 50 Hz
110 V/120 V/220 V/
240 V AC, 50/60 Hz
220 – 230 V AC, 50/60
Hz or 120 V AC, 60 Hz

Additional information
12GB
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
headphone 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 104˚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.

Additional information
13GB
,If you connect the headphones 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 connected
to the transmitter.
,The headphones’ power indicator light
dims, flashes or goes off.
•Replace dry battery with new one. If
the power indicator is still off after
replacing 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.
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.
•Replace dry battery with new one. If
the power indicator is still off after
replacing 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 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.
•Replace dry battery with new one. If
the power indicator is still off after
replacing the battery, take the
headphones to a Sony dealer.

2CS
󰇵󰅎󰇎󰂨

警告
针对中国消费者
为防止火灾或触电的危险，请勿使本
机淋雨或受潮。
󰅙󰂺󰂾
󰅣󰆎󰆮
󰇵
󰅛󰁏󰇈󰂕
󰆮󰂾

CE 󰅞󰁠󰅞󰁖
󰆗 EEA󰅾
󰂕
有触电危险严禁拆开。
内部无操作者可修元件，维修请咨询
具备资格人士。
For China Market Only：
制造商 ： 索尼公司
地址 ： 日本国东京都港区港南
1-7-1
总经销商： 索尼（中国）有限公司
地址 ： 中国北京市朝阳区东三
环北路霞光里 18 号佳
程大厦 A 座25 层
原产地 ： 马来西亚
出版日期： 2009 年3 月

3CS
欢迎！
 Sony MDR-IF140K 
󰁉󰅎

MDR-IF140K 󰁉
󰅛󰅡
󰅡
󰀜󰆮󰅣
󰅦
•󰃏󰀜󰃏
󰀜
•󰇬󰂚 7 m 
•󰇒󰆮󰅣
•󰀜󰅦󰇱󰁘󰀜
CS
目录
入门指南
󰆮 .............................................. 4
 .............................................. 5
󰆮 .......................................... 6
操作系统
 .............................................. 8
󰁖 ............................ 10
 ............................................ 10
附加信息
 .................................................... 11
󰂈 ............................................ 12
󰄑 ............................................ 12

4CS
入门指南
N 入门指南
打开包装
󰁉󰁖
•  TMR-IF130 (1)
• 󰂘 (1)
•  (1)
󰀜 h 
• 󰆨 (1)
 h 

•  MDR-IF140 (1)

5CS
入门指南
插入电池
1打开左耳罩的电池舱盖。
2将AAA 尺寸干电池插入电池舱，
使电池的 3端子对准舱内的 3。
3关闭电池舱盖。
电池寿命
*11 kHz 1 mW+1 mW 
*2󰁉
󰁖
有关电池的注意事项
•
•󰁱󰀸
󰂾󰄿󰇑󰀊
󰃖
•󰁉
󰀚󰃐

何时更换电池
󰂘󰅘
󰀜󰄨󰁖󰂷󰀜

电池
Sony 
LR03/AM-4(N)
Sony 
R03/UM-4 (NU)
近似时间*1
60 *2
28 *2

6CS
入门指南
安装发射器

󰅡󰅘PHONES IN 
󰅡LINE IN 
󰅡 LINE OUT 
1将发射器连接至音频／视频装置。
󰁉 AV 󰆮󰅣
󰃕 AB
*WALKMAN Sony Corporation 󰆠

发射器
转接插头（附带）
WALKMAN*、
电视机、录像机等
A连接至耳机插孔时
󰅡 PHONES IN 
至耳机插孔
（立体声耳机插孔）
RLINE IN
DC IN 9V
L
PHONES IN
至PHONES IN 插孔
右声道（红） 左声道（白）
连接线（附带）
至耳机插孔
（立体声迷你插孔）

7CS
入门指南
RLINE IN
DC IN 9V
L
PHONES IN
注意
 AV 󰆮󰅣󰁖LINE
OUT󰁉 RK-G136 
󰅡 LINE IN 
 AV 󰆮󰅣 LINE OUT 󰅡
PHONES IN 󰀜
发射器
至LINE IN 插孔
右声道
（红）
左声道
（白）
至除耳机插孔之外
的任何其他插孔
连接线（附带）
立体声、电视机、录像机等
B当连接至除耳机插孔之外的任何其
他插孔时
󰅡 LINE IN 
RLINE IN
DC IN 9V
L
PHONES IN
至DC IN 9 V
插孔
发射器 至交流电源插座
2如果交流电源适配器配备电压选择
器，请在将交流电源适配器连接至
交流电源插座之前，用螺丝刀将选
择器设定为您所在地区的操作电
压。
3将附带的交流电源适配器连接至发
射器。
（续）
交流电源适
配器（附带）

8CS
操作系统
N 操作系统
收听节目
收听前
󰂈󰀜
1打开连接至发射器的音频／视频装
置。
󰀜󰇒

󰅡󰀜󰂘󰆮󰅣󰀜
󰅦󰀜
󰄨
2打开耳机。
󰁘󰄘󰂘󰅘
3戴上耳机。
󰁘󰄘 R󰂾󰁘󰇱
󰄘L󰂾󰇱
4开始播放连接至发射器的装置。
注意
• 󰅡 PHONES IN  LINE
IN 󰀜󰆮󰅣
󰅡󰃖󰅢󰀜

•󰅛󰁉󰂘
󰁉󰂘
• 󰅑󰅡
󰁘󰀜
󰄤󰂾󰅎
󰁉 PC-236MS 󰆨
 h
统一极性插头