User manual OPTOMA HD80

[. . . ] The lightning flash with arrowheard within an equilateral triangle is intended to alert the user to the presence of uninsulated "dangerous voltage" within the product's enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons. Read these instructions ­before using this projector. Keep these instructions ­for future reference. Do not block any ventilation openings To ensure reliable operation of the projector and to protect it from overheating, put the projector in a position and location that will not interfere with its proper ventilation. [. . . ] Control the degree of difference between the lightest and darkest parts of the picture. After the initial setup and fine tuning is completed, utilize the Gamma Adjustment steps to optimize your image output. Choose "On" to mask off a few pixels on each edge of the image to be displayed. Use Edge Mask "On" if image source happens to have encoding error near any edge of the displayable image. Use to select items or make adjustments to your selection. Mask off a few pixels on each edge of the image to be displayed. Use this function to adjust if image source happens to have noise near any edge of the display image. Part of the original image will be lost if the image aspect ratio is less than 2. Press "DVI" to choose Analog and Digital Signal source from DVI connector. Press "HDMI1" to choose source from HDMI1 connector. Press "HDMI2" to choose source from HDMI2 connector. The Projector has multilingual On-screen Display menus that allow you to make image adjustments and change a variety of settings. Or "Enter" key to enter sub menu. Keys to select any item in the Projector will automatically save the new settings. There are many factory presets optimized for various types of images. "Image mode-->TV" will support automatically "Overscan" with step "2" as default. The contrast controls the degree of difference between the lightest and darkest parts of the picture. Adjusting the contrast changes the amount of black and white in the image. Adjusts a video image from black and white to fully saturated color. (0:Off) This unit comes with 10 preset gamma curves. After the initial setup and fine tuning is completed, utilize the Gamma Adjustment steps to optimize your image output. This allows you to choose a degamma table that has been fine-tuned to bring out the best image quality for the input. [. . . ] Switch off the power to the projector by pressing the Power button. Allow the projector to cool down at least 30 minutes. Use a screwdriver to remove the screw from the cover. Turn on the projector and do "Lamp Reset" after the lamp module is replaced. [. . . ]