If problems occur...
Error checklist
Problem
No operation indication
No RF signal
RF signal available, no audio
signal, "MUTE" display appears
on the display panel
Audio signal has a high level of
background noise
Audio signal is distorted
No access to a certain channel
If problems occur that are not listed in the above table or if the problems cannot be solved with the proposed
solutions, please contact your local Sennheiser agent for assistance.
Possible cause
Batteries are flat or
accupack is flat
No mains connection (EM 300 G2)
Transmitter and receiver are not on the
same channel
Transmitter is out of range
Transmitter is muted ("MUTE")
Receiver's squelch threshold is adjusted
too high
Transmitter doesn't transmit a
pilot tone
Transmitter sensitivity is adjusted too
low
Receiver's AF output level is adjusted
too low
Transmitter sensitivity is adjusted too
high
Receiver's AF output level is adjusted
too high
During scanning, an RF signal has been
detected on this channel and the
channel has been locked
During scanning, a transmitter of your
system operating on this channel has
not been switched off
Possible solution
Replace the batteries or
recharge the accupack
Check the connections of the mains unit
Set transmitter and receiver to the
same channel
Check the squelch threshold setting
(see "Adjusting the squelch threshold
(EM 300 G2 only)" on page 31) or
reduce the distance between
transmitter and receiving antenna
Deactivate the muting function
See "Adjusting the squelch threshold
(EM 300 G2 only)" on page 31
See "Activating/deactivating the pilot
tone transmission or pilot tone
evaluation" on page 33
See "Adjusting the sensitivity
(transmitters only)" on page 30
See "Adjusting the audio output level
(EM 300 G2 only)" on page 31
See "Adjusting the sensitivity
(transmitters only)" on page 30
See "Adjusting the audio output level
(EM 300 G2 only)" on page 31
See "Scanning the channel banks for
free channels (EM 300 G2 only)" on
page 29
See "Multi-channel operation" on
page 30
35