L-Acoustics LA4, Руководство пользователя

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LA4
AMPLIFIED CONTROLLER
User Manual
VERSION 1.1
LA4_UM_ML_1.1
w w w . l - a c o u s t i c s . c o m
40 en
8.3.1 No power, no sound, or sound is too low
No power, no sound,
or sound is too low
Is LCD
screen lit?
Is main screen
displayed?
Are signal
LED blinking?
Are outputs
muted?
Is there input
signal? *
Is output gain
too low? **
Is ‘’Standby
mode’’ message
displayed?
Is there a
message
displayed on
screen?
Are
Speaker
cables
connected?
Is L-NET
LED lit?
The controller is in Standby
Mode and controlled by LA
NETWORK MANAGER
software (see section 7.3.6)
Reboot the controller by
switching it off and on again to
cancel Standby Mode
Check that power
switch is on,
AC plug is
connected,
AC outlet works
Message ‘’HIGH TEMPERATURE:
SIGNAL ATTENUATION’’ is
displayed (see section 7.6.1)
Refer controller to local
distributor for service
Check speaker cables
And/or speakers
Plug speaker cables on both sides
Unmute the outputs
Check level at signal source
and secure XLR wiring on
both sides
Set output gain higher value
Refer controller to local
distributor for service
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes No
No
No
No
No
No
No
No
No
No
* Press and hold either IN A or IN B tabs
to check the corresponding input signal
levels and input gain values (see section
7.5.3).
** Press and hold either OUT 1 to OUT 4
tabs to check the corresponding output
gain values (see section 7.1.2).
Message ‘’DC ERROR: SWITCH
OFF’’ is displayed (see section 7.6.2)
Message ‘’POWER FAILURE:
SWITCH OFF’’ is displayed
(see sections 7.6.3 to 7.6.5)
Message ‘’FUSE PROTECT’’ is
displayed (see section 7.6.6)
Message ‘’DSP ERROR: SWITCH
OFF’’ is displayed (see section 7.6.7)