Sennheiser EM 3731-II User Manual
If a problem occurs
44
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.
solutions, please contact your local Sennheiser partner for assistance.
Problem
Possible cause
Possible solution
No operation
indication
indication
No mains connection
Check the connections of the mains cable
No RF signal
Transmitter and receiver are not on the
same channel
same channel
Set transmitter and receiver to the same
channel (see “Selecting a frequency bank
and a channel” on page 30 and
“Synchronizing a transmitter with the
receiver frequency” on page 21).
channel (see “Selecting a frequency bank
and a channel” on page 30 and
“Synchronizing a transmitter with the
receiver frequency” on page 21).
The transmission range is exceeded
Reduce the distance between transmitter
and receiver.
and receiver.
Check the squelch threshold setting (see
page 32).
page 32).
Frequency cannot be
transferred to the
transmitter
transferred to the
transmitter
The transmitter is not within the range
of the infra-red interface
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).
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
not yet ready for transferring the
frequency; the receiver is still in scan
mode
Press the
esc
button
The transmitter is from a different
frequency range
frequency range
Use a transmitter that matches the
frequency range of the receiver.
frequency range of the receiver.
The audio signal has a
high level of
background noise
high level of
background noise
The transmitter sensitivity is adjusted
too low
too low
Adjust the transmitter sensitivity correctly.
The receiver’s AF output level is
adjusted too low
adjusted too low
The audio signal is
distorted
distorted
The transmitter sensitivity is adjusted
too high
too high
Adjust the transmitter sensitivity correctly.
The receiver’s AF output level is
adjusted too high
adjusted too high
The display does not
switch on
switch on
The receiver is in standby mode.
Press the jog dial
„
MUTE
” is
permanently
displayed
displayed
One of the two receivers is not used or
the transmitter is switched off or out of
range.
the transmitter is switched off or out of
range.
Set the receiver to standby mode
(see page 40).
(see page 40).