User manual BENQ DVP 1648A

[. . . ] Further, Benq Corporation reserves the right to revise this publication and to make changes from time to time in the contents hereof without obligation of Benq Corporation to notify any person of such revision or changes. The AC adapter isolates this equipment from the AC supply. Unplug this product from the wall outlet before cleaning. Use a soft cloth to clean the monitor housing and a tape to stick dust and fingerprints on the screen panel. [. . . ] The adjustment can be autosaved. Main Menu Mode Control Functions Available in Main Menu 1. Luminance Press "<"or ">" key to select this item and press "Enter" to enter sub-menu. There are two items for luminance adjustments. Brightness: adjust the brightness of the display. Contrast: adjust the difference between the light and dark areas. English 34 Benq LCD Color Monitor User's Guide 2. Geometry Press "<"or ">" key to select this item and press "Enter" to enter sub-menu. There are four items for geometry adjustments. H. (Horizontal) Position: adjusts the horizontal position of the display. (Vertical) Position: adjusts the vertical position of the display. Phase: adjusts the phase of pixel clock. Pixel Clock: adjusts the frequency of the pixel. 3. Color Adjustment Press "<"or ">" key to select this item and press "Enter" to enter sub-menu. There are four items for geometry adjustments. English 35 Benq LCD Color Monitor User's Guide There are three items to adjust. Press "<"or ">"key to select a color and press "Enter" to adjust color temperature. 4. Miscellaneous Press "<"or ">"key to select this item and press "Enter" to enter sub-menu. Is the prompt on the display illuminated in orange? English 39 Benq LCD Color Monitor User's Guide If the LED is illuminated in orange, then the power management mode is active. Press a button on the computer keyboard or move the mouse. If that does not help, then check the VGA cable contacts. If any pins are bent or broken off, then contact your dealer or read the chapter, Additional Help, Repairs & Service. Is the prompt on the display not illuminated at all?Check the power supply mains socket, the external power supply and the mains switch. The image is or distorted, flashes or flickers: Read the chapter, Installation/Adjustment and then select the correct resolution, refresh rate and make adjustments based on these instructions. The image is displaced in one direction: Read the chapter, Installation/Adjustment and then select the correct resolution, refresh rate and make adjustments based on these instructions. Need More Help? If your problems remain after checking this manual, please contact your place of purchase or e-mail us at: DPLservice@benq. com English 40 Benq LCD Color Monitor User's Guide Supported operating modes Incoming display mode (Input timing) Resolution 640x350 720x400 640x480 640x480 640x480 800x600 800x600 800x600 800x600 1024x768 1024x768 1024x768 Horizontal Frequency (KHz) 31. 47(P) 31. 47(N) 31. 47(N) 37. 86(N) 37. 50(N) 35. 16(P) 37. 88(P) 48. 08(P) 46. 87(P) 48. 36(N) 56. 48(N) 60. 02(P) Vertical Frequency (Hz) 70. 08(N) 70. 08(P) 60. 00(N) 72. 80(N) 75. 00(N) 56. 25(P) 60. 32(P) 72. 19(P) 75. 00(P) 60. 00(N) 70. 10(N) 75. 00(P) Pixel Frequency (MHz) 25. 17 28. 32 25. 18 31. 50 31. 50 36. 00 40. 00 50. 00 49. 50 65. 00 75. 00 78. 75 Comment DOS DOS DOS VESA VESA VESA VESA VESA VESA VESA VESA VESA hModes, which are not listed in the above table, may not be supported. For an optimal picture it is recommended to choose a mode listed in the table. Their rod shaped molecules arrange themselves similarly to the molecules of crystals - always uniformly and in one particular direction. Yet liquid crystals are not set in this orientation, but behave like a liquid: They can be manipulated by applying an electric voltage. The layers of the liquid crystal molecules can therefore be longitudinal or diagonal to the polarising direction of the light and thereby have a varying effect on the course of light waves. LIQUID CRYSTALS POLARISE INCIDENT LIGHT An LC display consists of two polarising filters, a control layer, the respective colour filters and the liquid crystal layer. [. . . ] Pixel errors Pixel errors are (unfortunately) unavoidable with today's production methods, if you want to manufacture displays at an economically sensible price. A display with a resolution of 1024x768 dots therefore has 786432 pixels. Each pixel consists of the three sub-pixels for red, green and blue. That makes 2, 359, 296 individual control transistors. [. . . ]