Sony MDR-IF125RK manual Unpacking, Setting up the transmitter, Welcome

3-858-456-12(1)

Unpacking

Check that you have the following items:

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

• Transmitter

TMR-IF125R

AC power adaptor (supplied)

Cordless Stereo Headphone System

Operating Instructions

• AC power adaptor

• Connecting cord (phono plugs ÷stereo mini plug)

• Ni-Cd Rechargeable battery NC-AA (HJ)

• Headphones MDR-IF120

3 Connect the transmitter to a power source.

Transmitter

to an AC outlet

B	R A	L
	AUDIO IN	DC 9V

to DC IN 9V jack

AC power adaptor (supplied)

Notes

•Do not connect to the AUDIO IN A jacks and B jack at the same time. If you do so, the audio signals may be mixed.

•Use only the supplied AC power adaptor. Do not use any other AC power adaptor.

MDR-IF125RK

Sony Corporation © 1996 Printed in Korea

Setting up the transmitter

1 Connect the transmitter to audio/video equipment. Select one of the hookups below depending on the jack type:

aTo connect to LINE OUT or REC OUT jacks

Transmitter

Polarity of the plug

•If the plug of the AC power adaptor does not fit in the AC outlet, use the supplied AC plug adaptor.

•When you connect the connecting cord directly to an earphone jack, the audio signal will not be output through the right channel. In such a case, use the separately sold PC-236HG plug adaptor.

*WALKMAN is a registered trademark of Sony Corporation.

R A	L	´
AUDIO IN		DC IN 9V

to AUDIO IN B jack

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 top of the transmitter and the inner side of the headband. The serial number is located at the bottom of the transmitter and inside the battery compartment 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-IF125RK

Transmitter TMR-IF125R

Headphones MDR-IF120

Serial No.

Transmitter

Headphones

About the infrared rays communication

The illustration below shows the approximate area covered by the infrared rays emitted from the transmitter.

Transmitter			Infrared ray
Approx. 3 m
(1181/	8	in.)

45° Approx. 7 m (23 ft.)

45°

Approx. 3 m (1181/8 in.)

Notes

•This system utilizes infrared rays for communication so noise (hissing) can be heard in the headphones as you move farther away from the transmitter. The sound will also cutoff and noise occur if the infrared rays are blocked. These are characteristics of infrared ray communication and do not indicate an equipment breakdown.

•The infrared rays will not penetrate walls or opaque glass, therefore, be sure to stay within sight of the transmitter.

•When you use the headphones inside the area illustrated in the diagram, the transmitter can be placed in the front, behind or by the side of the listener.

•The sound you hear varies according to your position and the transmitter position. Try finding a position which yields the best sound.

Connecting cord (supplied)

Left	Right
channel	channel
(white)	(red)
to LINE OUT
or REC OUT
jacks

Stereo system,

TV, VCR, etc.

bTo connect to a headphones jack

Transmitter

B	A	´
	IN	DC IN 9V
to AUDIO IN A jacks
Right channel		Left channel
(red)		(white)
Connecting cord
(supplied)

Unimatch plug

Welcome!

Thank you for purchasing the Sony MDR-IF125RK Cordless Stereo Headphone System. Before operating the unit, please read this manual thoroughly and retain it for future reference. Some features are:

•Cordless system 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 for fitting your head perfectly.

•The VOL control adjusts the volume level of both channels.

•The supplied rechargeable battery can be used to power the headphones.

adaptor (not	to a headphones
	jack (stereo
supplied)
	mini jack)
to a headphones	Discman,
jack (stereo
	WALKMAN*, TV,
phone jack)	VCR, etc.