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Problem

Solution

Distortion

If the transmitter is

connected to the headphones jack,

turn down the volume of the

connected audio/video equipment.

Change the radio frequency with the

CHANNEL selector on the

transmitter.

The headphones' POWER indicator

light is weak or turned off.

• Charge the built-in rechargeable

battery or if the POWER indicator is

still off after charging the built-in

rechargeable battery, take the

headphones to a Sony dealer for

replacement of the rechargeable

battery.

If you connect the transmitter to LINE

OUT or REC OUT jack of an audio

reproducer, make sure that the NOISE

FILTER switch is set to OFF.

Loud

Move closer to the transmitter. As

background

you move away from the transmitter,

noise

more noise is likely to be heard.

If the transmitter is connected to the

headphones jack, turn up the volume

of the connected audio/video

equipment.

MDR-RF815RK:

Change the radio frequency with the

CHANNEL selector on the

transmitter, then tune the headphones

with the TUNING control.

MDR-RF845RK:

Change the radio frequency with the

CHANNEL selector on the

transmitter, then press the TUNING

button again.

The headphones' POWER indicator

light is weak or turned off.

• Charge the built-in rechargeable

battery or if the POWER indicator is

still off after charging the built-in

rechargeable battery, take the

headphones to a Sony dealer for

replacement of the rechargeable

battery.

If you connect the transmitter to the

LINE OUT or REC OUT jack of an

audio reproducer, make sure that the

NOISE FILTER switch is set to OFF.

Specifications

General

Carrier frequency

863.5 – 864.5 MHz

Channel

Ch1, Ch2, Ch3

Modulation

FM stereo

Frequency response

20 – 20,000 Hz

Transmitter TMR-RF845R, TMR-RF815R

Power source

DC 9 V: supplied AC power

adaptor

Audio input

phono jacks/stereo mini jack

Dimensions

Approx. 150 mm dia

Mass

Approx. 190 g (6.7 oz.)

Headphones MDR-RF845R, MDR-RF815R

Power source

DC 2.4 V: Built-in rechargeable

Mass

Approx. 240 g (8.5 oz.) incl.

built-in rechargeable battery

Built-in Ni-Cd rechargeable battery

Model name

NC-AA

Voltage

1.2 V

Capacity

700 mAh

Optional accessory

PC-236HG (stereo mini jack y

Plug adaptor

monaural mini plug)

Design and specifications are subject to change without

notice.

108 mm

in.) (w/h)

battery