Press 
to highlight Power On Lock and press 
/ 
to select Off. You will not have to enter the password next time when turning on the projector.
ii.If the password is incorrect, the password error message appears lasting for three seconds, and the message “INPUT PASSWORD” appears for your retry. You can press MENU/EXIT to cancel the change or try another password.
Though the password function is disabled, you need to keep the old password in hand should you ever need to
Switching input signal
The projector can be connected to multiple devices at the same time. However, it can only display one full screen at a time. When starting up, the projector automatically searches for the available signals.
Be sure the Quick Auto Search function in the SOURCE menu is On if you want the projector to automatically search for the signals.
To select the source:
1.Press SOURCE on the projector or remote control. A source selection bar appears.
2.Press 
/
until your desired signal is selected and press MODE/ENTER.
Once detected, the selected source information will display at the corner of the screen for seconds. If there is multiple equipment connected to the projector, repeat steps
•The brightness level of the projected image will change accordingly when you switch between different input signals. Data (graphic) "PC" presentations using mostly static images are generally brighter than "Video" using mostly moving images (movies).
•The native display resolution of this projector is in a 4:3 aspect ratio. For best display picture results, you should select and use an input signal which outputs at this resolution. Any other resolutions will be scaled by the projector depending upon the “aspect ratio” setting, which may cause some image distortion or loss of picture clarity. See "Selecting the aspect ratio" on page 24 for details.
Computer1/YPbPr1
Computer2/YPbPr2
Video
Network Display
USB Display
USB Reader
Operation 23