Sony MDR-RF820RK Operating Instructions Manual page 10

5
Turn up the volume to a moderate
level with the VOL control.
A MDR-RF850RK
Press the TUNE button briefly for
automatic tuning of the headphones.
If you do not receive a clear audio
signal, press it again.
VOL control
B MDR-RF820RK
Tune the headphones in to the
frequency of the transmitter with the
TUNE control until you can hear the
audio signal loud and clear.
VOL control
Follow steps 3 and 5 above until the
receiving performance becomes better.
10
TUNE
button
TUNE
control
Sending RF signals from the transmitter
The transmitter starts sending RF signals
automatically when it detects an audio signal
from the equipment connected.
If it does not detect an audio signal for more than
about four minutes, the transmitter will stop
sending RF signals, and the power indicator will
turn off.
When the transmitter receives an audio signal
again, it starts sending the RF signals, and the
power indicator will light in red again.
If the audio signal is very weak, the transmitter
does not send RF signals. If the transmitter is
connected to a headphone jack, make sure the
volume of the equipment connected is set to 5 – 6
or higher.
You may not hear the beginning of the sound
from the headphones until the transmitter starts
sending the RF signals after detecting an audio
signal.
The headphones automatically turn
off when they are taken off
— Auto power on/off function
Do not pull up the self-adjusting band when not
in use, as this will consume the battery power.
Notes
• If hiss is heard, move closer to the transmitter.
• You may hear some noise when you disconnect the
AC power adaptor from the transmitter before taking
off the headphones.