Lenovo L171p User Manual - Page 22

Table 3-2. Troubleshooting Problem • Fuzzy lines in text or a blurry image. • Horizontal or vertical lines through the image. Possible cause • Image setup has not been optimized • Your system Display Properties setting have not been optimized. Suggested action Reference Adjust the resolution settings on your system to match the native resolution for this monitor: 1280 x 1024 at 60 Hz. "Adjusting your monitor image" on page 2-3 "Manual image setup" Perform automatic image setup. If automatic image setup does not help, perform manual image setup. "Selecting a supported display mode" on page 2-6 When working in the native resolution, you may find additional improvements by adjusting the Dots Per Inch (DPI) setting on your system. See the Advanced section of your system's display properties. Manual image setup If automatic image setup does not establish the image that you prefer, perform manual image setup. Note: Have your monitor powered on for about 15 minutes, until the monitor warms up. 1. Press at the bottom of the monitor to open the OSD menu. 2. Use or to select and press to access. 3. Use or to select Clock and Phase adjustment. • Clock (pixel frequency) adjusts the number of pixels scanned by one horizontal sweep. If the frequency is not correct, the screen shows vertical stripes and the picture does not have the correct width. • Phase adjusts the phase of the pixel clock signal. With a wrong phase adjustment, the picture has horizontal disturbances in light picture. 4. When the image no longer looks distorted, save the Clock and Phase adjustments. 5. Press to leave the OSD menu. Manually installing the monitor driver Below are steps for manually installing the monitor driver in Microsoft® Windows XP® and Microsoft Windows 2000 Professional. Please see the Install Driver section of the Reference and Driver CD for automatic installation. Installing the monitor driver in Windows XP To use the Plug and Play feature in Windows XP, files should be loaded from the Reference and Driver CD. 3-4 ThinkVision L171p Flat Panel Monitor User's Guide