Troubleshooting - HK Audio L.U.C.A.S IMPACT Mode D'emploi

L.U.C.A.S IMPACT Manual 1.2

6 Troubleshooting

The display does not light up 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.
The display lights up, but there is no sound coming
from the cabinets.
1 Check the cables connected to the Left and Right
inputs.
2 Check if the signal sources (mixer, keyboard, CD
player) are on.
3 Is the Gain knob turned up?
4 Check the speaker cables for damage.
5 Check if the Speakon" connectors are fully enga-
ged in their sockets (rotated to the right). They
must be locked in place to establish an electrical
connection.
The subwoofer's low frequency output is too soft.
1 Check the setting of the Subwoofer Level knob.
Adjust this knob to set the volume of the sub-
woofer to the desired level.
Sound seems distorted.
1 Check the LED displays on your mixer. They should
not be constantly in the red. If necessary, reduce
the volume at the mixer.
2 If the LED displays on your mixer are in the green,
turn back L.U.C.A.S IMPACT's Gain knob.
3 Watch the LEDs of the Limit Left, Limit Right and
Limit Subwoofer displays on L.U.C.A.S IMPACT's
control panel. These may light up yellow, but only
intermittently. Under no circumstances may they
continuously illuminate yellow. If this is the case,
turn the Gain down (knob counterclockwise).
Annoying hum
1 Check the cables connecting the source of the
audio signal to L.U.C.A.S IMPACT. Replace any
damaged cords.
2 If you cannot pinpoint the cause of the humming,
press the Ground switch in. This should remedy
the problem in most cases.
Level problems
1 Check the Sensitivity switch's setting. When it is
set to +4 dB, and you feed in a signal with a level
of +4 dB (for example, from a connected mixing
console), the system delivers 0dB output level.
This lets you take advantage of the system's full
dynamic range. When it is set to -6 dB, and you
feed in a signal with a level of -6 dB, the sys-
tem delivers 0 dB output level. This boosts the
system's output level by 10 dB, but reduces the
dynamic range at higher volumes. This is why
we recommend running the rig at +4 dB in live
situations.
This is to certify that
HK AUDIO ® L.U.C.A.S IMPACT
complies with the provisions of the Directive of
the Council of the European Communities on the
ap proximation of the laws of the Member States
relating to electromagnetic compatibility (EMC
Directive 89/336/EEC) and the low voltage Directive
(73/23/EEC). This declaration of conformity of the
European Communities is the result of an examination
carried out by the Quality Assurance Department
of STAMER GmbH in accordance with European
Standards EN 50081-1, EN 50082-1and EN 60065
for low voltage, as laid down in Article 10 of the
EMC Directive.
Stamer Musikanlagen GmbH*
Magdeburger Str. 8
66606 St.Wendel
Lothar Stamer Dipl.Ing.
Managing Director
St.Wendel, 01/03/06
* Stamer Musikanlagen manufactures exclusively
for HK AUDIO ® .