61SettingKey lockKey lockPIN code lockThis function locks the side control and remote control buttonsto prevent operation by unauthorized persons.. . . . . . Unlocked.. . . . . . Lock the operation of the side control.To unlock, use the remote control.. . . . . . Lock the operation of the remotecontrol. To unlock, use the side control.If the side control accidentally becomes locked and you donot have the remote control nearby or there is somethingwrong with your remote control, contact the dealer where youpurchased the projector or the service center.This function allows you to use the Key lock and PIN code lockfunction to set the security for the projector operation.This function prevents the projector from being operatedby unauthorized persons and provides the following settingoptions for security.Off . . . . . Unlocked.On1 . . . . . Enter the PIN code every time turning onthe projector.On . . . . . Enter the PIN code to operate the projectoronce the power cord is disconnected; as long asthe AC power cord is connected, the projectorcan be operated without a PIN code.Whenever you change the PIN code lock setting or the PINcode (the four-digit number), you are required to enter the PINcode. The "1234" is set as the initial PIN code at the factory.If you want to change the PIN code lock setting, Press theSELECT button and the PIN code dialog box appears.PIN code lockSecurity (Key lock and PIN code lock)