44
• Input amplifier of the connected mixer is
overloaded
• Use the reduction of the mixer or
adjust the volume
Distorted sound
(no „CLIP“-indication on
receiver)
„CLIP“-indication on
receiver
• Transmitter is overloaded
• Reduce the sensitivity of the transmitter
or increase the distance between
microphone and sound source
No sound, RF-indication is
okay, AF-indication is
missing during
modulation
• Wrong indication caused by strong
interference signals
• No microphone connected to transmitter
• Choose another receiving channel
• Connect suitable microphone
Frequency cannot be
changed
• FUNCTION LOCKED
• Release the locked function (refer to
1.3.8)
Squelch cannot be
changed
• FUNCTION LOCKED
• Release the locked function (refer to
1.3.8)
AF cannot be switched
off by Audio Mute
• FUNCTION LOCKED
• Release the locked function (refer to
1.3.8)
Indication:
„RECEIVER ERROR -
CHANGE FREQUENCY“
• Frequency cannot be used any longer
• Disturbances due to RF-interference
• Choose another frequency or consult
your beyerdynamic dealer
Problem
Cause
Solution
5.2
SDM 569 / SEM 581, TS 500 Transmitters
• Transmitter and receiver have different
frequencies
• Insufficient battery voltage
• Poor battery contact, battery inserted
incorrectly
• Check if transmitter and receiver
have the same frequency
• Replace the alkaline battery or
recharge the battery
• Check the battery and insert it again
• Transmission distance between transmitter
and receiver is too far
• Reduce the distance between
transmitter and receiver
No RF-indication at
the receiver
• Interference from other transmitters
• Two transmitters on the same frequency
• Battery of the transmitter is too weak
• Switch off the other transmitters
• Change the frequency of one
transmitter
• Replace the battery
Noise / chirping
No function
Problem
Cause
Solution
