Sony MDR-IF540RK - Manual (Page 15)

Additional information
15 GB
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.
• Charge the rechargeable batteries if
the headphones’ batteries are weak,
or replace dry batteries with new
ones. If the power indicator is still off
after charging the batteries, 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.
The batteries cannot be
charged
, Check if the charging indicator light is
on. If not, put the headphones on the
transmitter correctly so that the
charging indicator light is on.
, Dry batteries are installed.
• Install the supplied rechargeable
nickel-metal hydride batteries.
, Rechargeable batteries other than the
supplied are installed.
• Install the supplied rechargeable
nickel-metal hydride batteries.