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Problem
Distortion
Loud
background
noise
Solution
If the transmitter is
connected to the headphones jack,
turn down the volume of the
connected audio/video equipment.
Select the radio frequency with the
CHANNEL selector.
The headphones’ POWER indicator
light is weak or turned off.
•Charge the rechargeable batteries or
if the POWER indicator is still off
after charging the batteries, replace
them with new
NC-AA-HJ batteries.
•If you are using the conventional
dry batteries, replace it with new
ones.
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.
Move closer to the transmitter. As
you move away from the transmitter,
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.
Select the radio frequency with the
CHANNEL selector, then tune in the
frequency of the transmitter with the
TUNING control.
The headphones’ POWER indicator
light is weak or turned off.
•Charge the rechargeable batteries or
if the POWER indicator is still off
after charging the batteries, replace
them with new
NC-AA-HJ batteries.
•If you are using the conventional
dry batteries, replace it with new
ones.
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.
Problem
No sound/
Muffled
sound
Solution
Turn on the transmitter first, then put
on the headphones.
Check the connection of the audio/
video equipment or 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.
Select the radio frequency with the
CHANNEL selector, then tune in the
frequency of the transmitter with the
TUNING control.
The mute function is activated.
Use the headphones near the
transmitter.
The headphones’ POWER indicator
light is weak or turned off.
•Charge the rechargeable batteries or
if the POWER indicator is still off
after charging the batteries, replace
them with new
NC-AA-HJ batteries.
•If you are using the conventional
dry batteries, replace it with new
ones.
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.
Troubleshooting