No Power, No Sound, Or Sound Level Too Low - L-Acoustics LA8 Manuel Utilisateur

LA8
AMPLIFIED CONTROLLER
User Manual
VERSION 1.2
8.3.1

No power, no sound, or sound level too low

No power, no
sound, or sound
level too low
No
LCD screen
lit?
Contact local distributor for
Yes
No
Main screen
displayed?
Yes
Yes
Signal LEDs
blinking?
No
Plug speaker cables on both sides
Yes
Outputs
muted?
No
Yes
Output gain
too low? *
No
No
Signal input
presence? **
Yes
Contact local
distributor for
service
LA8_UM_EN_1.2
Check if AC outlet works,
connect the AC plug,
switch the power on.
No
Power
switch on, AC plug
connected, AC outlet
working?
Yes
service
No
Wait 4 min
Yes
Firmware being
updated?
sequence to
be completed
No
Displayed
message on
screen?
Speaker
Yes
cables
connected?
No
Unmute the outputs
Set output gain higher value
Check level at signal source
and secure XLR wiring on
both sides
w w w . l - a c o u s t i c s . c o m
The controller is in Standby
Mode and controlled by LA
NETWORK MANAGER
software (see section 7.3.6)
for the
updating
Yes
Check speaker cables
and/or speakers
* Press and hold either OUT 1 to OUT 4 keys
to check the corresponding output gain
values (see section 7.1.2).
** Press and hold either IN A or IN B keys to
check if the corresponding input signal LEDs
are blinking or not (see section 7.5.3).
Reboot the controller by
switching it off and on again to
cancel Standby Mode
No
Yes
L-NET LED
lit?
Message ''STANDBY MODE''
displayed and 4 LOAD LEDs lit
Message ''HIGH TEMPERATURE:
SIGNAL ATTENUATION''
displayed (see section 7.6.1)
Message ''DC ERROR: SWITCH
OFF'' displayed (see section 7.6.2)
Message ''POWER FAILURE:
SWITCH OFF'' displayed
(see sections 7.6.3 to 7.6.5)
Message ''FUSE PROTECT''
displayed (see section 7.6.6)
Message ''DSP ERROR: SWITCH
OFF'' displayed (see section 7.6.7)
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