Locking the Projector
The projector includes various Lock settings to prevent the image from being accidentally changed once it’s adjusted, and to keep children from turning on the projector without adult supervision.
To access the Lock settings, follow these steps:
1.Press the Menu button on the remote control.
2.Use the menu navigation buttons to open the Setting menu, then open the Operation menu, and then select Lock Setting.
3.Choose from these options:
■Focus Lock to prevent the focus from being changed.
■Zoom Lock to prevent the picture size from being changed.
Menu button 
Menu navigation buttons
■Child Lock to make it more difficult to turn on the projector from the control panel (but does not affect operation of the remote control).
To turn on the projector, either use the remote control, or press and hold the projector’s Power button for at least 3 seconds.
■Key Lock to disable all the buttons on the projector’s control panel.
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