Sennheiser EM 500, Instruction Manual

Page: 52 / 64

If a problem occurs ...
51
If a problem occurs ...
Problem Possible cause Possible solution
Receiver cannot be
operated, “
Locked ”
appears on the
display panel
Lock mode is activated Deactivate the lock mode
(see page 23).
No operation
indication No mains connection Check the connections of the mains
unit.
No RF signal Transmitter and receiver are not
on the same channel Set the transmitter and receiver
to the same channel. To do so, use
the synchronization function
(see page 22).
Transmission range is exceeded Check the squelch threshold setting
(see page 39).
Reduce the distance between trans-
mitter and receiving antennas.
RF signal available,
no audio signal,
“
MUTE ” appears on
the display panel
If “ RX Mute ” additionally
appears on the display panel:
receiver is muted
Cancel the muting on the receiver
(see page 24).
If “ TX Mute ” additionally
appears on the display panel:
transmitter is muted or doesn’t
transmit a pilot tone
Cancel the muting on the transmitter
(see the instruction manual of the
transmitter).
Activate the pilot tone transmission
on the transmitter (see the instruc-
tion manual of the transmitter).
Deactivate the pilot tone evaluation
on the receiver (see page 42).
Receiver’s squelch threshold is
adjusted too high Reduce the squelch threshold
(see page 34).
Reposition the antennas.
Audio signal has a
high level of back-
ground noise Transmitter sensitivity is
adjusted too low Adjust the transmitter sensitivity
correctly (see the instruction manual
of the transmitter).