OperationUsing quick access functionsQuick access functions are available directly from the main screen. Quick access functions include:— Locking/Unlocking the front panel (p.38)— Muting/Unmuting an output channel (p.38)— Modifying gain (p.39)— Identifying an amplied controller (p.40)— Displaying input level, input selection, input mode and group information (p.40)Locking/Unlocking the front panelThe front panel can be locked to prevent unintentional operations.— To lock: press and hold simultaneously the ESC and OK keys until Display Locked is displayed.— To unlock: press and hold simultaneously the ESC and OK keys until Display Unlocked is displayedCLIP-5dB-10dB-25dBSIGNALLOADL-NETOUT 1 OUT 2 OUT 3 OUT 4ESC OKIN A IN BMENU8System MessageDisplay LockedMuting/Unmuting an output channelBy default, all output channels are muted in all factory presets (the OUT LEDs are lit).— To unmute an output channel: press the corresponding OUT key for less than 0.3 seconds.— To mute an output channel: press the corresponding OUT key for less than 0.3 seconds.The screen displays MUTE OUT and the mute status of each output channel for 2 seconds.Example: unmuting OUT1CLIP-5dB-10dB-25dBSIGNALLOADL-NETOUT 1 OUT 2 OUT 3 OUT 4ESC OKIN A IN BMENU8MUTE OUTOFF ON ON ONGain can be set before unmuting.LA8 user manual (EN) version 13.1 38