Locking the Projector
The projector includes two 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 Settings menu, then open the Operation menu.
3.Choose from these options:
■Child Lock to disable the P Power button on the projector’s control panel unless it is pressed for about 3 seconds. (You can use the P Power button to turn it off, however.) Since you can still use the remote control to turn on the projector, you may want to keep it away from children’s reach.
Menu button
Menu navigation buttons
■Operation Lock to disable all the buttons on the projector’s control panel. A lock icon appears on the screen whenever you press a button with Operation Lock turned on. To operate the projector, you must use the remote control. To cancel Operation
Lock, press and hold the 
Select button on the projector’s control panel for at least 7 seconds.
4.Press Menu to exit the menu system.
If you turned on the Operation Lock, the projector buttons are now locked.
If you turned on the Child Lock, turn off the projector and let it cool down. The Child Lock takes effect after the
Making Basic Adjustments 31