HK Audio LUCAS SMART - Manual (Page 10)

L.U.C.A.S SMART Manual 1.0
8 Troubleshooting
The Power On LED and the mains switch do not
light up red after you switch the system on.
• Check if the power cord is plugged into the
Mains Input.
• Check if the mains power supply is actually
providing current.
• Check if L.U.C.A.S SMART’s fuse is defective.
Replace only with another fuse of the same type
and rating as specified.
The Power On LED and the Power switch light up
red, but no sound is coming from the cabinets.
• Check the cables that you connected to the Line In,
Mic In and Aux ports.
• Check if the signal sources (mixer, keyboard,
CD player) are-on.
• Are the Gain knobs turned up?
• Check the loudspeaker cables for damage.
• Check if the Speakon® connectors plugged into
the Satellite Left and Satellite Right sockets are en-
gaged all the way (rotated fully to the right). Only
then will an electrical connection be established.
The subwoofer’s bass response sounds thin or weak.
• Check the setting of the Subwoofer Level knob.
Adjust the volume of the subwoofer using the
Subwoofer Level knob until you get the kind of
bottom end you want to hear.
The signal sounds distorted.
• Check the LED displays on your mixer. They should
not be constantly in the red. If necessary, back off
the volume at the mixer.
• If the LED displays on your mixer are in the green,
turn down the L.U.C.A.S SMART’s Gain knob (Line
In or Aux In).
• Observe the LEDs of the Limiter Status displays on
L.U.C.A.S SMART’s control panel. If the yellow LED
lights up continuously, the integrated protective
functions are working at full capacity. In this in-
stance, do not turn the volume level up any higher.
Annoying hum
• Check the cables that you are using to connect the
signal source to L.U.C.A.S SMART. Replace damaged
cables.
• If you cannot pinpoint the cause of the hum, press
the Ground Lift switch. This should remedy the
problem in most cases.