Marantz SR6013 Owner's Manual page 154

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Canceling the Panel lock function

Press X while you press and hold M-DAX and DIMMER

with the unit in standby mode.

Press TUNER PRESET CH + or TUNER PRESET CH – to

select "FP LOCK zOff".

(z The currently set mode.)

Press STATUS to enter the setting.

The Panel lock function is canceled.

0 Even when the Panel lock function is set, you can operate the unit using the

remote control unit.