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If a problem occurs ...
47
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 22).
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 20).
Transmission range is exceeded Check the squelch threshold setting
(see page 33).
Reduce the distance between trans-
mitter and receiving antennas.
RF signal available,
no audio signal,
“MUTE” appears on
the display panel
Receiver is muted Cancel the muting on the receiver
(see page 23).
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 40).
Receiver’s squelch threshold is
adjusted too high
Reduce the squelch threshold
(see page 33).
Reposition the antennas.
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).
Receiver’s audio output level is
adjusted too high
Reduce the audio output level
(see page 36).