Troubleshooting - HK Audio D.E.A.CON Manual

7 Troubleshooting

The Power-On LED doesn't light up red when
switched on.
1 Check that the mains cable is connected to the
mains input.
2 Make sure that the mains itself has power.
3 Check whether the circuit breaker has tripped.
The Power-On LED lights up red, but there's no
sound coming from the D.E.A.CON system.
1 With system power off, check the cables that you
connected to the system's input connectors.
2 With system power off, check that the signal
sources (keyboard, CD-player, mixing console, etc.)
are switched on.
3 With system power off, check the speaker cables
for possible damage.
4 Make sure that the Speakon ® plugs are properly
locked into the speaker jacks (turned all the way to
the right).
5 With system power on, are the system's Input Gain
controls turned up sufficiently?
The subwoofer is not producing much bass.
1 Check the setting of the subwoofer Level control
and adjust if needed.
2 Check whether the mode switch is set to Full-range
mode. (In Full-range mode the subwoofer is com-
pletely muted.)
Sound coming from the system seems distorted.
1 Check the LED indicators on your mixing console.
They should not be continually in the red zone.
If necessary, lower the input or output volume on
the mixing console.
2 If the LEDs on your mixing console are in the green
area (indicating reasonable level), turn down the
Gain Left and Gain Right controls on the
D.E.A.CON.
3 Monitor the Limiter indicator LEDs in the
operation area of the D.E.A.CON mid/high.
These should only briefly light up yellow.
Under no circumstances should they continually
light up yellow. Should this be the case, turn down
the gain controls.
Bothersome hum
1 Check the cables connecting the signal source
to the D.E.A.CON. Replace damaged cables.
Should you be unable to determine the cause of the
hum, press the ground lift switch. In most cases,
this resolves the problem.
11