L-Acoustics LA4X, Руководство пользователя

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Corrective maintenance
noise, level loss, distorted sound, white noise (no error message)
possible cause diagnosis / procedure
AES/EBU audio source is connected to an analog input
Check the input signal cabling and check that the input
mode has been selected accordingly in the INPUT
SETTINGS menu.
gain value too high on the amplied controller
Set an appropriate gain value on channels OUT1 to
OUT4.
If the AES/EBU input mode is selected, set an appropriate
AES/EBU input gain value.
output gain value too high on the audio source
Set an appropriate output gain value on the audio source
(refer to the third-party documentation).
switch to the analog fallback mode with incorrect AES/
EBU input gain value
Set an appropriate AES/EBU input gain value and inspect
the digital audio source for failure.
Reminder: A digital audio source can meet the following
failures: no clock, loss of lock, invalid audio (validity bit),
CRC error, bipolar encoding error, data slip.
incorrect preset selection
Select a preset in accordance with the loudspeaker system
connected to the outputs.
audio source cable incorrectly plugged
Unplug the XLR cable and plug it again on the audio
source and the amplied controller.
Verify with the installer if ground loops can occur.
audio source cable damaged Replace the XLR cable.
incorrect settings on the audio source
Set appropriate parameter values on the audio source
(refer to the third-party documentation).
audio source failure Inspect the audio source for failure.
loudspeaker incorrectly plugged or plugged into the wrong
output connector
Plug/Replug and secure each speakON cable into the
loudspeaker and the corresponding output connector on
the amplied controller.
Verify with the installer if ground loops can occur.
loudspeaker cable damaged Replace the speakON cable.
loudspeaker is damaged If only one loudspeaker is connected, inspect it.
other causes Contact L-Acoustics.
sound only available in one input mode and not the other
sound only available in AES/EBU and not in analog, or sound only available in analog and not in AES/EBU
• Contact L-Acoustics.
LA4X owner's manual (EN) version 14.1 67