Sennheiser EM 2000 - Manual (Page 33)

Cleaning the receiver
31
Cleaning the receiver
̈
Before cleaning, disconnect the device from the mains.
̈
Use a slightly damp cloth to clean the receiver from time to time. Do not use any solvents
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.
̈
Keep all liquids away from the receiver.
Problem Possible cause Possible solution
Receiver cannot be oper-
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 Set the transmitter and receiver to the same
channel.
To do so, use the synchronization function
(see page 14).
Transmitter is out of range Check the squelch threshold setting
(see page 17).
Reduce the distance between transmitter
and receiving antennas.
RF signal available,
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).
Switch the pilot tone evaluation on the
receiver off (see page 17).
Receiver’s squelch threshold is adjusted
too high Reduce the squelch threshold (see page 17).
Reposition the antennas.
Audio signal has a high
level of background noise Transmitter sensitivity is adjusted too low/
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 Reduce the audio output level
(“
AF Out ”, see page 17).
No access to a certain
channel During scanning, an RF signal has been
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).
During scanning, a transmitter of your
system operating on this channel has not
been switched off Switch the transmitter off and redo the
frequency preset scan (see page 17).