Troubleshooting - Sony MDR-IF420RK Operating Instructions Manual

Troubleshooting

Problem Solution
No sound/ Check the connection of the
Muffled audio/video equipment or
sound 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.
The mute function is
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.
• Charge the rechargeable
battery because the
headphones' battery is
weak, or if the power
indicator is still off after
charging the battery, take
the headphones to a Sony
dealer for a replacement
of the rechargeable
battery.
• If you are using the
conventional dry battery,
replace it with a new one.
Check if the INPUT
SOURCE selector is set to
the right position.
Problem Solution
No sound/ Check the position of the
Muffled BALANCE control (MDR-IF
sound 520RK only).
Check the position of the
SURROUND button (MDR-
IF520RK only).
Distortion If the transmitter is
connected to the headphones
jack, turn down the volume
of the connected audio/
video equipment.
The headphones' power
indicator light is weak or
turned off.
• Charge the rechargeable
battery because the
headphones' battery is
weak, or if the power
indicator is still off after
charging the battery, take
the headphones to a Sony
dealer for a replacement
of the rechargeable
battery.
• If you are using the
conventional dry battery,
replace it with a new one.
Check if the INPUT
SOURCE selector is set to
the right position.
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