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10 Troubleshooting
Error checklist
Problem Possible cause What to do
You hear whistling noise ț Microphone volume is adjusted ț Reduce the volume with the
too high microphone volume control
No operation indication ț Battery is flat (transmitter) ț Replace the battery
ț No mains connection (EMP 2015) ț Check to see if the mains plug is
connected and if the amplifier is
turned on
No RF signal and ț Transmitter and/or receiver section ț Turn the transmitter and/or
no audio signal are turned off receiver section on
ț Transmission frequency is not the ț Set the transmitter and the
same as the receiving frequency receiver section to the same
frequency
(u “Special adjustments”)
ț Transmitting antenna is not connected ț Connect the antenna
RF signal available but ț Transmitter is muted (“MUTE”) ț Deactivate the muting function
no audio signal
ț Receiver section’s squelch threshold ț Adjust the squelch treshold to a
is adjusted too high lower value (u “Adjusting the
squelch threshold”)
ț Microphone is not connected ț Connect the microphone
Speaker’s voice too soft ț Microphone volume is adjusted ț Increase the microphone
too low sensitivity on the transmitter
or the microphone volume on
the EMP 2015
ț Microphone is covered or ț Position the microphone at
positioned too far from the mouth the corner of the mouth
Speaker’s voice too loud ț Microphone volume is adjusted ț Reduce the volume with the
too high microphone volume control
Speaker’s voice distorted ț Transmitter sensitivity is adjusted ț Adjust the sensitivity to a lower
too high value (u “Adjusting the
sensitivity”)
ț Receiver section’s AF output level is ț Reduce the volume with the
adjusted too high microphone volume control
Volume of sound reproducing ț Volume at the line input is adjusted ț Reduce the volume of the
device adjusted too high too high audio device with the
corresponding volume control