L-ACOUSTICS LA8 [46/56] La la la la888
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L-ACOUSTICS LA8 [46/56] La la la la888

L-ACOUSTICS LA8 [46/56] La la la la888
LA
LALA
LA8
88
8
AMPLIFIED CONTROLLER
AMPLIFIED CONTROLLERAMPLIFIED CONTROLLER
AMPLIFIED CONTROLLER
USER MANUAL
USER MANUALUSER MANUAL
USER MANUAL
VERSION 4.0
LA8_UM_EN_4-0
w w w . l - a c o u s t i c s . c o m
44
4444
44
8.3 Troubleshooting
This section provides flowcharts to assist the user for eventual troubleshooting
operations with the LA8 amplified controller. The keys for interpretation of the
flowcharts are shown on the right.
Note: The flowcharts cannot cover every possible scenario the user may encounter.
8.3.1 Malfunction message displayed on screen
If a malfunction occurs, the controller’s LCD screen will display one of the malfunction messages shown below. Some
of these malfunctions will also be indicated in the LA NETWORK MANAGER (NWM) User interface by the Limit and
Fault LED (refer to the LA NETWORK MANAGER User manual [3.4]).
Malfunctions not leading to controller stop:
Temperature of one of the 4 amp channel heat sinks reaching 85 °C. Input signals
going into all amp channels attenuated [10.1.1]. NWM: Limit LED lit.
Too high main input current draw: fuse protection feature activated [10.1.2].
DC voltage above the 3 V threshold detected on the displayed amplifier output circuit
[10.1.3]. NWM: General Fault LED lit if channel switched off.
Error detected on the displayed amplifier output circuit: this circuit is muted and the
others operate normally. NWM: Individual Fault LED lit.
Communication fault between the DSP and the DISPLAY.
NWM: Controller disconnected.
Malfunctions leading to controller stop:
Fatal error occurred on the displayed amplifier output circuit: all amp circuits are
muted for safety purposes. NWM: General Fault LED lit.
Main power supply not available. The controller will automatically return to normal
state when the power supply has been recovered (AMP running message displayed).
High Temperature
Signal Attenuation
System Message
Fuseprotect
System Message
DC : Channel
System Message
Error on Channel
SYSTEM ERROR
Protect: CH
System Message
Waiting SMPS
0
Symptom
Remedy
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