HP A7217A hp 24'' monitor - a7217a, user's guide - Page 18

Trouble symptoms and remedies If the problem is caused by the connected computer or other equipment, please refer to the connected equipment's instruction manual. Use the self-diagnosis function (page 20) if the following recommendations do not resolve the problem. Symptom No picture If the ! (power) indicator is not lit Check these items • Check that the power cord is properly connected. • Check that the ! (power) switch is in the "on" position. If the NO INPUT SIGNAL message appears on the screen, or if the ! (power) indicator is either orange or alternating between green and orange If the OUT OF SCAN RANGE message appears on the screen • Check that the video signal cable is properly connected and all plugs are firmly seated in their sockets (page 6). • Check that the INPUT switch setting is correct (page 9). • Check that the video input connector's pins are not bent or pushed in. xProblems caused by the connected computer or other equipment • The computer is in power saving mode. Try pressing any key on the keyboard or moving the mouse. • Check that the computer's power is "on." • Check that the graphic board is completely seated in the proper bus slot. xProblems caused by the connected computer or other equipment • Check that the video frequency range is within that specified for the monitor. If you replaced an old monitor with this monitor, reconnect the old monitor and adjust the frequency range to the following. Horizontal: 30 - 121 kHz Vertical: 48 - 160 Hz If no message is displayed and the ! (power) indicator is green or flashing orange If using Windows 95/98 Picture flickers, bounces, oscillates, or is scrambled • Use the Self-diagnosis function (page 20). • If your PC/graphic board has difficulty communicating with this monitor, download the specific driver by accessing the web site of Microsoft Corporation. • Isolate and eliminate any potential sources of electric or magnetic fields such as other monitors, laser printers, fluorescent lighting, televisions, or electric fans. • Move the monitor away from power lines or place a magnetic shield near the monitor. • Try plugging the monitor into a different AC outlet, preferably on a different circuit. • Try turning the monitor 90° to the left or right. Picture is fuzzy Picture is ghosting Picture is not centered or sized properly Edges of the image are curved Wavy or elliptical pattern (moire) is visible xProblems caused by the connected computer or other equipment • Check your graphic board manual for the proper monitor setting. • Confirm that the graphics mode (VESA, etc.) and the frequency of the input signal are supported by this monitor (Appendix). Even if the frequency is within the proper range, some graphic boards may have a sync pulse that is too narrow for the monitor to sync correctly. • Adjust the computer's refresh rate (vertical frequency) to obtain the best possible picture. • Adjust the brightness and contrast (page 11). • Degauss the monitor* (page 15). • If CANCEL MOIRE is ON, the picture may become fuzzy. Decrease the moire cancellation effect or set CANCEL MOIRE to OFF (page 14). • Eliminate the use of video cable extensions and/or video switch boxes. • Check that all plugs are firmly seated in their sockets. • Press the ASC button (page 9). • Adjust the size or centering (page 12). Note that some video modes do not fill the screen to the edges. • Adjust the geometry (page 12). • Set CANCEL MOIRE to ON and adjust the degree of moire cancellation until the moire is at a minimum (page 14). xProblems caused by the connected computer or other equipment • Change your desktop pattern. 18