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Symptom Cause and remedy
No signal from
optical digital
output
Bilingual sound
cannot be selected
when using digital
input. (Both MAIN
and SUB can be
heard at the same
time.)
A repeated beep
sounds.
,No power supplied to the processor.
• Connect the processor to a power source.
,No playback sound from the connected external digital unit at the optical
input jack.
• Check that the external unit is playing back.
,Connect the analog out to the LINE IN jacks, and select the sound on the
connected component.
,The headphones cannot receive the signal from the processor.
• Move within the RF signal transmission area.
• Check the connection of the processor, AC power adaptor, and AC outlet.
• Check if there is any wireless apparatus using 2.4 GHz frequency, or a
microwave oven around the processor and headphones.
• Change the position of the processor.
,There is no audio signal input for about 5 minutes and RF signals are not
transmitted.
• Input the audio signal to the processor and press TUNE/ID SET on the
headphones once.
,Additional headphones are being charged.
• Remove the additional headphones from the processor.