Acer AL922 AL922 Monitor Service Guide - Page 20

3. VL-901 DISPLAY CONTROL BOARD 3.1 Description The VL-901 display control board is design to directly convert the analog RGB signals from standard VGA display card to optimum LCD timing signals so as to construct a high display quality LCD monitor. 3.2 Features • On board embedded micro-processor to detect display timings and control user functions. • Using Genesis gm5120 design to generate optimum LCD timings. 2 • Using E PROM to memorize every adjusted parameter. • support up to 22 display modes from VGA to SXGA. • Offer full screen expansion function on non-SXGA mode (automatic). • flexible color temperature selection function including 9300,6500,7500 and user mode. • Support OSD functions. • Support VESA DPMS function. • Support DDC2B functions. • Support 5 languages for OSD description. • The longest time for mode change is 3 seconds. 20