Sony MDR-RF5000K Operating Instructions Manual page 26

Symptom
A repeated beep
sounds.
US
26
Additional Information
Cause and remedy
, The headphones cannot receive the signal from the transmitter.
• Move within the RF signal transmission area.
• Check the connection of the transmitter, AC power adaptor, and AC outlet.
• Check if there is any wireless apparatus using 2.4 GHz frequency, or a
microwave oven around the transmitter and headphones.
• Change the position of the transmitter.
, There is no audio signal input for about 5 minutes and RF signals are not
transmitted.
• Input the audio signal to the transmitter and press TUNE/ID SET on the
headphones once.
, Additional headphones are being charged.
• Remove the additional headphones from the transmitter.