Sennheiser Set 840-TV Instructions for use - Page 25

What if ... ... you hear acoustic signals or warning signals? Acoustic signal 1 acknowledgement beep 1-3 short beeps Meaning The channel search button has been pressed once briefly. The channel search button has been pressed for 5 seconds. The receiver is set to channel 1, 2 or 3. Warning signal 6 short beeps 2 long beeps Meaning The receiver does not receive any signal from the transmitter: • The distance between transmitter and receiver is too great. The receiver switches off after 3 minutes. • The transmitter is switched off. The rechargeable battery is almost flat. To switch the acoustic signals on and off: ̈ Press the channel search 4 button 4 on the receiver for approx. 5 seconds. You hear a short acoustic signal. Warning signals cannot be switched off. 22