58SettingKey lockKey lockPIN code lockThis function locks the top control and remote controlbuttons to prevent operation by unauthorized persons...... Unlocked...... Lock the operation of the top control. Tounlock, use the remote control...... Lock the operation of the remote control.To unlock, use the top control.If the top control accidentally becomes locked and you donot have the remote control nearby or there is somethingwrong with your remote control, contact the dealer whereyou purchased the projector or the service center.This function allows you to use the Key lock and PIN codelock function to set the security for the projector operation.This function prevents the projector from being operatedby unauthorized persons and provides the followingsetting options 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; aslong as the AC power cord is connected,the projector can be operated without aPIN code.Whenever you change the PIN code lock setting or thePIN code (the four-digit number), you are required toenter the PIN code. The "1234" is set as the initial PINcode at the factory.If you want to change the PIN code lock setting, Pressthe SELECT button and the PIN code dialog boxappears.PIN code lockSecurity (Key lock and PIN code lock)