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Additional information
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
solution(s), please contact your local Sennheiser agent for assistance.
Problem Possible cause Possible solution
No operation
indication
No mains connection Check the connections of the mains cable
No RF signal
Transmitter and receiver are not on the
same channel
Set transmitter and receiver to the same
channel (see “Selecting a frequency bank
and a channel” on page 28 and
“Synchronizing the transmitter with the
receiver frequency” on page 21)
The transmitter is out of range y Reduce the distance between
transmitter and receiver
y Check the squelch threshold setting
(see page 30)
It is not possible to
transfer the
frequency to the
transmitter
The transmitter is not within the range
of the infra-red interface
Place the transmitter at a distance of
approx. 5 cm in front of the infra-red
interface (see page 21)
The infra-red interface of the receiver is
not yet ready for transferring the
frequency; the receiver is still in scan
mode
Press the esc button
6 to stop the scan
The transmitter is from a different
frequency range
Use a transmitter that matches the
frequency range of the receiver
The audio signal has a
high level of
background noise
The transmitter sensitivity is adjusted
too low
Adjust the transmitter sensitivity correctly
The receiver’s AF output level is
adjusted too low
See “Adjusting the audio output level” on
page 31
The audio signal is
distorted
The transmitter sensitivity is adjusted
too high
Adjust the transmitter sensitivity correctly
The receiver’s AF output level is
adjusted too high
See “Adjusting the audio output level” on
page 31
The display does not
switch on
The receiver is in standby mode
Press the jog dial
7 (see “Setting a
receiver to standby mode” on page 37)
“Mute” is
permanently
displayed
One of the two receivers is not used or
the transmitter is swiched off or out of
range
Set the receiver to standby mode
(see page 37)