Renkforce DJM700U USB-CLUB-MIXER Mode D'emploi page 39

There is a humming sound.
• The record-player ground lines are not connected to ground screw GND.
• There is a ground loop between the connected devices. Connect the signal ground with special ground-
insulated cables.
A channel does not function.
• A connection cable has come off.
• The balance control on the amplifier or the mixer is set incorrectly.
The sound is distorted.
• The level on the mixer is set incorrectly or the connected amplifier is overmodulated.
• The connected device does not meet the requirements for the connection type or is not equipped with
the required connections.
• The volume on the connected amplifier is set too high.
CROSSFADER does not function.
• An unassigned channel has been chosen with the CROSSFADER ASSIGN A and B switch.
Channel A or B of the CROSSFADER are not audible.
• Channel has been faded out using the CROSSFADER.
No signal of the SURROUND processor is audible.
• SURROUND ON switch not pressed.
• SURROUND control set to minimum.
No microphone signal is audible.
• MIC ON switch not pressed.
• MIC VOL control set to minimum.
No signal is audible in the headphones.
• No channels have been selected for pre-listening with the PFL switch.
• VOL headphones control is set to minimum.
No automatic BEAT ASSIST display.
• The input signal is too weak.
• An unassigned channel has been chosen with CROSSFADER ASSIGN A or B switch.
Repairs other than those described above should only be carried out by an authorised specialist.
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