Acer AL1911 AL1911 User Guide - Page 9

Standard Timing Table If the selected timing is NOT included in table below, this LCD monitor will use the most suitable available timing. Resolution H. Freq. (KHz) V. Freq. (Hz) Pixel Freq. (MHz) H/V Sync. Polarity Mode 640 x 350 31.469 70.087 25.175 +/- VGA-350 640 x 400 24.830 56.420 21.050 -/- NEC PC9801 640 x 400 640 x 400 31.469 31.50 70.087 70.15 25.175 25.197 -/+ VGA-400-GRAPH -/- NEC PC9821 640 x 480 640 x 480 640 x 480 640 x 480 720 x 400 800 x 600 800 x 600 800 x 600 800 x 600 832 x 624 1024 x 768 1024 x 768 1024 x 768 1024 x 768 1024 x 768 1280 x 1024 1280 x 1024 31.469 35.00 37.861 37.500 31.469 35.156 37.879 48.077 46.875 49.725 48.363 53.964 56.476 60.023 60.04 63.981 79.976 59.940 66.67 72.809 75.000 70.087 56.250 60.317 72.188 75.000 74.55 60.004 66.132 70.069 75.029 75.02 60.020 75.025 25.175 30.24 31.500 31.500 28.322 36.000 40.000 50.000 49.500 57.2832 65.000 71.664 75.000 78.750 80.00 108 135 -/- VGA-480 -/- APPLE MAC-480 -/- VESA - 480 - 72Hz -/- VESA - 480 - 75Hz -/+ VESA-400-TEXT +/+ SVGA +/+ VESA-600-60 Hz +/+ VESA-600-72 Hz +/+ VESA-600-75 Hz -/- APPLE MAC-800 -/- XGA +/+ COMPAQ-XGA -/- VESA-768-70 Hz +/+ VESA-768-75 Hz -/- APPLE MAC-768 +/+ SXGA +/+ SXGA Note: 1.When the in put display mode is not 1280 x 1024, the image is smoothly expanded to 1280 x 1024 dots with the PW164 scaling engine. After expansion from 650x350, 640x400, 640x480, 720x400, 832x624, 800x600, and 1024x768 resolution, the text may look not so sharp, and the Graphics may look not so proportional. 2. 640x400 56Hz and 1024x768 66Hz modes cannot be supported when Digital (TMDS) input. Troubleshooting This LCD Monitor has pre-adjusted using factory standard VGA timings. Due to the output timing differences among various VGA cards in the market, users may initially experience an unstable or unclear display whenever a new display mode or new VGA card is selected. Attention This LCD Monitor Supports Multiple VGA Modes. Refer to the Standard Timing Table for a listing of modes supported by this LCD Monitor. PROBLEM Picture is unclear and unstable The picture is unclear and unstable, please perform the following steps : 1. Enter PC to "Shut Down Windows" status while you're in MS-Windows environment. 2. Check the screen to see if there's any black vertical stripes appear. If there are, take advantage of the "Clock" function in OSD menu and adjust (by increment or decrement numbers) until those bars disappear. 3. Move to "Phase" function in OSD menu again and adjust the monitor screen to its most clear display. 4. Click "No" on "Shut Down Windows" and back to the normal PC operating environment. PROBLEM There is no picture on LCD Monitor If there's no picture on the LCD Monitor, please perform the following steps: 1. Make sure the power indicator on the LCD Monitor is ON, all connections are secured, and the system is running on the correct timing. Refer to Chapter 3 for information on timing. 2. Turn off the LCD Monitor and then turn it back on again. If there is still no picture, press the Adjustment Control button several times. 3. If step 2 doesn't work, connect your PC system to another external CRT. If your PC system Functions properly with a CRT Monitor but it does not function with the LCD Monitor, the output timing of the VGA card may be out of the LCD's synchronous range. Please change to an alternative mode listed in the Standard Timing Table or replace the VGA card, and then repeat steps 1 and 2. PROBLEM There is no picture on LCD Monitor If you have chosen an output timing that is outside of the LCD Monitor's synchronous range (Horizontal: 24 ~ 80 KHz and Vertical: 56 ~ 75 Hz), the OSD will display a "Out of Range" message. Choose a mode that is supported by your LCD Monitor. Also, if the signal cable is not connected to LCD monitor at all or properly, the monitor screen will display a message "No 9