You
can lock the buttons on the projector's control panel to prevent
anyone from using the projector. You can lock all the buttons or
all the buttons except the power button.
Press the Menu
button.
Select the Settings menu and
press Enter.
Select the Lock Setting
setting and press Enter.
Select one of these lock types and press Enter:
To
lock the projector's power button, select Child Lock. To turn the projector on, you must
press the power button for longer than three seconds.
To
lock all buttons except the power button, select Control Panel Lock.
You see a confirmation prompt.
Select Yes and press
Enter.
Restart the projector for the lock settings to take
effect.