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If a problem occurs ...
If a problem occurs ...
If a problem occurs that is not listed in the above table or if the problem
cannot be solved with the proposed solutions, please contact your local
Sennheiser partner for assistance.
To find a Sennheiser partner in your country, search at
www.sennheiser.com under “Service & Support”.
Problem Possible cause Possible solution
Diversity
receiver cannot
be operated,
“Locked”
appears on the
display panel
Lock mode is activated Deactivate the lock mode
(see page 10).
No operation
indication
Batteries are flat or
accupack is flat
Replace the batteries or
recharge the accupack
(see page 7).
No RF signal Transmitter and receiver
are not on the same
channel
Set the transmitter and
receiver to the same channel.
Synchronize the transmitter
with the receiver
(see page 20).
Transmission range is
exceeded
Check the squelch threshold
setting (see page 14).
Reduce the distance between
transmitter and receiver.
RF signal is deactivated
(“RF Mute“)
Activate the RF signal
(see the instruction manual
of the transmitter).
RF signal avail-
able, no audio
signal, “MUTE”
appears on the
display panel
Transmitter is muted Cancel the muting
(see the instruction manual
of the transmitter).
Receiver’s squelch
threshold is adjusted
too high
Reduce the squelch threshold
setting (see page 14).
SR 300 IEM transmitter
is set to mono operation
and therefore doesn’t
transmit a pilot tone
Deactivate the pilot tone
evaluation (see page 18).
SR 300 IEM transmitter
is set to stereo opera-
tion and therefore
transmits a pilot tone
Activate the pilot tone
evaluation (see page 18).
Audio signal has
a high level of
background
noise
Transmitter sensitivity
is adjusted too low
Adjust the transmitter
sensitivity correctly
(see the instruction manual
of the transmitter).
Audio signal is
distorted
Transmitter sensitivity
is adjusted too high
Adjust the transmitter
sensitivity correctly
(see the instruction manual
of the transmitter).
No access to a
certain channel
During scanning, an
RF signal has been
detected on this channel
and the channel has
been locked
Set the transmitter operating
on this channel to a different
channel and redo the
frequency preset scan
(see page 15).
During scanning, a
transmitter of your
system operating on
this channel has not
been switched off
Switch the transmitter off
and redo the frequency
preset scan (see page 15).