BenQ PB8250 Service Manual page 32

6. The start up procedure takes about 30 seconds after pressing Power. In the later stage of start up,
a default BenQ logo appears.
7. Next, the projector starts to search input signals. Irrespective of selected input source, the screen
shows "Acquiring Signal" at the bottom right corner of the screen. If there is no input source
detected, one of six messages will be displayed on the screen continuously: "Analog RGB
Searching", "DVI-A Searching", "DVI-D Searching", "Analog YPbPr Searching", "S-Video
Searching", and "Composite Video Searching".
8. You can also press Source on the projector or remote control to select your desired input signal.
Digital Keystone Correction
Keystoning refers to the situation where the projected image is noticeably wider at either the top or
bottom. It occurs when the projector is not perpendicular to the screen.
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