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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
Radio microphone
cannot be operated,
“
Locked
” appears on
the display panel
Lock mode is
activated
Deactivate the lock mode
(see page 14).
No operation
indication
Batteries are flat or
accupack is flat
Replace the batteries or
recharge the accupack
(see page 9).
No RF signal at the
receiver
Radio microphone
and receiver are
not on the same
channel
Synchronize the radio
microphone with the
receiver (see page 27).
Set the radio microphone
to the same channel as the
receiver.
Transmission range
is exceeded
Reduce the distance
between radio microphone
and receiving antennas.
Increase the transmission
power (see page 25)
RF signal is
deactivated
(“
RF Mute
“)
Activate the RF signal
(see page 15)
RF signal available,
no audio signal,
“
MUTE
” appears on
the display panel
Receiver’s squelch
threshold is
adjusted too high
Reduce the squelch
threshold setting on
the receiver.
Radio microphone
doesn’t transmit a
pilot tone
Activate the pilot
tone transmission
(see page 26).
Audio signal has a
high level of back-
ground noise or is
distorted
Radio microphone’s
sensitivity is
adjusted too low/
too high
Adjust the input sensitivity
(see page 20).