Canceling the Panel lock function
Press 
while you press and hold M-DAX and DIMMER with the unit in standby mode.
while you press and hold M-DAX and DIMMER with the unit in standby mode.Press ZONE2 SOURCE or INTERNET RADIO to select “FP LOCK 
Off”.
Off”.( The currently set mode.)
Press STATUS to enter the setting.
The Panel lock function is canceled.
Even when the Panel lock function is set, you can operate the unit using the remote control unit.