Troubleshooting; Technical Specifications - HK Audio L.U.C.A.S 600 Manuel

6 Troubleshooting

The Power-On LED does not light up red when
switched on.
1 Check if the power cable is plugged into the
Mains Input.
2 Check if the mains power supply is providing current.
3 Check for a blown fuse. If this is the case, set the
Power On switch to the Off position, unplug the
mains cable, and replace the fuse with a fuse of the
same type and rating (see Technical Specifications).
The Power-On LED lights up red, but the cabinets
are producing no sound.
1 Check the cables that you connected to the Left
and Right inputs.
2 Check whether the signal sources (mixer, keyboard,
CD player) are on.
3 Are the Gain Left and Gain Right knobs turned up?
4 Check the speaker cables for damage.
5 Check if the Speakon" connectors are engaged in
their sockets (rotated to the right). Only then will
a good electrical connection be established.
The subwoofer's low frequency output is too soft.
1 Check the setting of the Subwoofer Level knob.
Set the volume of the subwoofer to the desired
level using this knob.
The signal seems distorted.
1 Check the LED displays at your mixer. They should
not be constantly in the red. If necessary, back off
the volume at the mixer.
2 If the LED displays at your mixer are in the green,
back off the Gain Left and Gain Right knobs on
L.U.C.A.S 600.
3 Observe the LEDs of the Limit Left, Limit Right
and Limit Subwoofer displays on L.U.C.A.S 600's
control panel. These should light up yellow for no
more than an instant. Under no circumstances
may the yellow LEDs illuminate continuously.
If this is the case, turn down the Gain knobs.
Annoying humming
1 Check the cables that you are using to connect the
signal source to L.U.C.A.S 600. Replace damaged
cables. If you cannot pinpoint the cause of the
humming, press Ground Lift. This should remedy
the problem in most cases.

7 Technical Specifications

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