Sony MDR-IF230 - Manual

Operating Instructions
Mode d’emploi
Manual de instrucciones
Sony Corporation © 1998 Printed in China
MDR-IF230
3-864-633-12(1)
Cordless Stereo
Headphones
Precautions
• The CE mark on the unit is valid only for
products marketed in the European Union.
• When the headphones are not to be used
for a long period of time, remove the
battery to avoid damage caused by battery
leakage and subsequent corrosion.
• Do not leave the cordless stereo
headphones in a location subject to direct
sunlight, heat or moisture.
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, reduce 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 headphones that are not
covered in this manual, please consult your
nearest Sony dealer.
Be sure to bring the headphones and the
transmitter to your Sony dealer when
requiring repair work is needed.
Troubleshooting
No sound/Muffled sound
/ Turn on the transmitter first, then put on the
headphones.
/ Check the connection of the audio/video
equipment or the AC power adaptor.
/ Check that the audio/video equipment is
turned on.
/ Turn up the volume on the connected audio/
video equipment, if the transmitter is
connected to the headphones jack. (Around
level 5 or 6 on the volume control should be
appropriate.)
/ The mute function has 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 is
weak or turned off.
n Replace the headphone battery.
Distortion
/ If the transmitter is connected to the
headphones jack, turn down the volume of
the connected audio/video equipment.
(Around level 5 or 6 on the volume control
should be appropriate.)
/ The headphones’ power indicator light is
weak or turned off.
n Replace the headphone battery.
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 to
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.
/ Change the position or angle of the
transmitter.
•The headphones are used by a window
where the sunlight is too strong.
n Draw the curtains/blinds to shut out
the direct sunlight, or use the
headphones away form sunlight.
/ If the transmitter is connected to the
headphones jack, turn up the volume of the
connected audio/video equipment. (Around
level 5 or 6 on the volume control should be
appropriate.)
/ The headphones’ power indicator light is
weak or turned off.
n Replace the headphone battery.
WARNING
To prevent fire or shock hazard, do
not expose the unit to rain or
moisture.
To avoid electrical shock, do not
open the cabinet. Refer servicing
to qualified personnel only.
WARNING
You are cautioned that any changes or
modifications not expressly approved in this
manual could void your authority to operate
this equipment.
Owner’s Record
The model number is located on the
headphone housing. The serial number is
located on the 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-IF230
Serial No.
Welcome!
Thank you for purchasing the Sony
MDR-IF230 Cordless Stereo Headphones.
Before operating the unit, please read this
manual thoroughly and retain it for future
reference.
Some features are:
• These cordless headphones are ideal for
those already used to the Sony Cordless
Stereo Headphones system.
Please use the same type batteries you have
in your own model.
• Cordless headphones that allows you to
listen to a program free from the restriction
of a cord.
• Broad horizontal listening area that gives
you superb sound virtually anywhere in the
room.
• Self-adjusting headband that fits to your
head perfectly.
• The headphones power turns on and off
automatically every time you put the
headphones on and off (Auto power on/off
function).
• The VOL control adjusts the volume level of
both channels.
• The power source of the headphones can be
selected from either a commercially
available R6 (size AA) battery or a
NC-AA(HJ) rechargeable battery.
Overview
The MDR-IF230 is a cordless stereo
headphone which uses infrared rays.
Connect the optional transmitter to your
Discman, Walkman equipped with a
headphone jack or line output jack and you
can listen to a program free from the
restriction of the headphone cord.
English
Setting up the
headphones
1 Open the battery compartment lid on top
of the left housing.
2 Insert the battery by matching the ] on
the battery to the ] terminal on the lid.
3 Close the battery compartment lid.
Removing the battery
Open the battery compartment lid, while
keeping the housing level and remove the
battery from the battery compartment as
illustrated below.
Note on the battery
If you already have the MDR-IF230RK or
MDR-IF125RK Cordless Stereo Headphones
System. You can use the supplied
rechargeable battery NC-AA (HJ) with your
system. Refer to the operating instruction
manual for your Cordless Stereo Headphones
System for information on how to recharge
the battery.
Battery life
*fully charged
When to replace the battery
Replace the battery with a new one when the
POWER indicator dims, and a hissing noise
increases.
Replacing the Ear
Pads
When the ear pads become dirty or damaged,
consult your nearest Sony dealer and replace
them as illustrated below.
Specifications
General
Modulation system
Frequency modulation
Carrier frequency
Right 2.8 MHz
Left 2.3 MHz
Frequency response
18 – 22,000 Hz
Power source DC 1.5 V, 1 × R6 (size AA) battery
or Ni-Cd rechargeable battery
NC-AA (HJ)
Mass Approx. 180 g (6.4 oz.) including
battery
Optional accessories
Infrared transmitter TMR-IF33
Design and specifications are subject to change
without notice.
Listening to a
program
1 Turn on the audio/video equipment
connected to the transmitter.
2 Turn on the transmitter. The infrared
emitters light up.
3 Put on the headphones and the power
turns on automatically. The power
indicator glows red when the power
turns on.
4
Adjust the volume.
Auto power on/off function
When you remove the headphones, the power
turns off automatically. Avoid pulling up on
the self adjusting band when the headphones
are not in use. This might switch the
headphones on.
Mute function
If a hissing noise is heard when the infrared
rays are obstructed, or the headphones are
used outside of the effective range the mute
function will be activated and sound will not
be heard from the headphones. To restore the
sound, move nearer to the transmitter or
remove the obstruction.
After listening to a program
Take the headphones off before turning off
the transmitter. Otherwise you may hear
some noise when the infrared rays are
suddenly cut off.
Housing (left)
Battery
Battery
compartment lid
Remove the old
ear pad by
pulling it
outwards.
Place the new ear
pad around the
driver unit as
illustrated.
Battery
Sony alkaline battery
LR6/AM3 (N)
Sony battery
R6P/SUM-3 (NS)
rechargeable battery
NC-AA (HJ)
Approx. hours
100
50
30*