20
Always pull the power plug out of the socket
- before cleaning it
- during thunderstorms
- if you are not going to use the appliance for longer periods of time
Make sure that the protective conductor (yellow/green) is neither interrupted in the power cable, a possibly
connected extension cable nor in/on the product. An interrupted protective conductor poses mortal dan-
ger! Operation without a protective conductor connection is not permitted!
When opening the covers or removing parts except where possible by hand, you may
expose live parts. Connections may also be live. Prior to aligning or repair work or exchan-
ging parts or modules, you must separate the appliance from all power sources if you need
to open it. Only an expert familiar with the risks and the pertinent regulations may repair or
maintain an open live appliance.
Never turn the device on immediately after bringing it from a cold room into a warm room. The condensati-
on may destroy the appliance under adverse circumstances. Leave the appliance turned off until it has rea-
ched room temperature. Wait until the condensation has evaporated.
Also observe the safety notices and operating instructions of your remaining music appliances.
In commercial facilities, observe the accident prevention instructions and the regulations of the professional
association.
Do not put any open fire sources like burning candles etc. onto the appliance.
Only use the appliance in moderate climate, not in a tropical climate.
The device may only be operated by persons familiar with the respective safety notices and this operating
manual.
Do not place the device on a soft surface, like a carpet or bed or similar. This prevents the heat dissipation
in the device and may lead to overheating.
If you are not certain how to connect the device correctly or in case of any questions not
covered by the operating manual, please contact our technical information service or another
expert. Please contact an expert in case you have any doubts about the mode of operation or
the safety of the device.
Connection and Operating Elements
See image on the fold-out page.
(1) ON/OFF switch (POWER)
Turn the mixing desk on and off with this switch. The appliance is turned on when the switch is in the "ON"
position; the operating LED (2) is lit.
(2) Operating indicator
The operating LED lights up when the device is turned on.
(3) BOOTH controller
With this controller, you adjust the level of the BOOTH output (26).
Position "0" means minimum level, position "10" maximum output level.
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29
Symptom
Possible cause
Error remedy
The sound is too low
The talk over switch (11) is on.
Only use the talk over switch when
you want to make an announce-
ment with the microphone.
Fader/gain slider is wrongly
Adjust the fader/gain slider
adjusted.
correctly.
There is a humming sound
No ground connection
Make a ground connection
between the devices.
between the devices via the
ground screw clamp (31).
A cable is defect.
Exchange the cable.
There is a humming loop
Connect the signal ground with
between the connected
a specially ground-insulated cable.
appliances.
Attention! Do not interrupt ´
the protective earth connection
of the voltage supply!
One channel does not work.
A cable has become lose.
Check the connections
between the appliances.
The balance controller on
Adjust the balance controller.
the mixing desk/amplifier is
set wrongly.
Sound is distorted.
Fader slider wrongly set, the
Set fader slider as described.
connected amplifier is
oversteered.
The connected appliance
Use appliances with a proper
does not meet the required
cinch connection.
specifications for a cinch
connection or does not
have a cinch connection.
Gain slider is wrongly adjusted,
Adjust the gain slider as described.
the mixing desk is oversteered.
Other repairs as described above may only be performed by an authorised workshop.
