Sennheiser EM 2000 User Manual
Cleaning the receiver
31
Cleaning the receiver
왘
Before cleaning, disconnect the device from the mains.
왘
Use a slightly damp cloth to clean the receiver from time to time. Do not use any solvents
or cleansing agents.
or cleansing agents.
If a problem occurs ...
CAUTION!
Liquids can damage the electronics of the receiver!
Liquids entering the housing of the device can cause a short-circuit and damage the
electronics.
electronics.
왘
Keep all liquids away from the receiver.
Problem
Possible cause
Possible solution
Receiver cannot be oper-
ated, “
ated, “
Locked
” appears
on the display panel
Lock mode is activated
Deactivate the lock mode (see page 14).
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
same channel
Set the transmitter and receiver to the same
channel.
To do so, use the synchronization function
(see page 14).
channel.
To do so, use the synchronization function
(see page 14).
Transmitter is out of range
Check the squelch threshold setting
(see page 17).
(see page 17).
Reduce the distance between transmitter
and receiving antennas.
and receiving antennas.
RF signal available,
no audio signal,
“
no audio signal,
“
MUTE
” appears on the
display panel
If “
TX Mute
” additionally appears on the
display panel:
transmitter is muted (“
MUTE
”) or
transmitter doesn’t transmit a pilot tone
Cancel the muting (see page 15).
Switch the pilot tone transmission on the
transmitter on (see page 24).
transmitter on (see page 24).
Switch the pilot tone evaluation on the
receiver off (see page 17).
receiver off (see page 17).
Receiver’s squelch threshold is adjusted
too high
too high
Reduce the squelch threshold (see page 17).
Reposition the antennas.
Audio signal has a high
level of background noise
level of background noise
Transmitter sensitivity is adjusted too low/
high
high
Adjust the transmitter sensitivity correctly.
Audio signal is distorted
Transmitter sensitivity is adjusted too high
Adjust the transmitter sensitivity correctly.
Receiver’s audio output level is adjusted too
high
high
Reduce the audio output level
(“
(“
AF Out
”, see page 17).
No access to a certain
channel
channel
During scanning, an RF signal has been
detected on this channel and the channel
has been locked
detected on this channel and the channel
has been locked
Set the transmitter operating on this
channel to a different channel and redo
the frequency preset scan (see page 17).
channel to a different channel and redo
the frequency preset scan (see page 17).
During scanning, a transmitter of your
system operating on this channel has not
been switched off
system operating on this channel has not
been switched off
Switch the transmitter off and redo the
frequency preset scan (see page 17).
frequency preset scan (see page 17).