IBM P275 Operating Instructions Manual

Contents

IBM P275 Operating Instructions Manual Manual pdf 19 page image

17USTrouble symptoms and remediesIf 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 19) if the following recommendations do not resolve the problem.Symptom Check these itemsNo pictureIf the ! (power) indicator is not lit • Check that the power cord is properly connected.• Check that the ! (power) button is in the “on” position.If the NO SIGNAL message appearson the screen, or if the! (power) indicator is orange• Check that the video signal cable is properly connected and all plugs are firmly seated intheir sockets (page 4).• Check that the (input) switch setting is correct (page 6).• 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 movingthe mouse.• Check that the computer’s power is “on.”• Check that the graphic board is completely seated in the proper bus slot.If the OUT OF SCAN RANGEmessage appears on the screenxProblems caused by the connected computer or other equipment• Check that the video frequency range is within that specified for the monitor. If youreplaced an old monitor with this monitor, reconnect the old monitor and adjust thefrequency range to the following.Horizontal: 30 – 130 kHzVertical: 48 – 170 HzIf no message is displayed and the! (power) indicator is green orflashing orange• Use the Self-diagnosis function (page 19).Picture flickers, bounces,oscillates, or is scrambled • Isolate and eliminate any potential sources of electric or magnetic fields such as othermonitors, 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.xProblems caused by the connected computer or other equipment• Check your graphics board manual for the proper monitor setting.• Confirm that the graphics mode and the frequency of the input signal are supported by thismonitor (page 20). Even if the frequency is within the proper range, some graphics boardsmay 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.Picture is fuzzy • Adjust the contrast and brightness (page 8).• Degauss the monitor* (page 11).• Adjust the degree of moire cancellation until the moire is minimal, or set CANCELMOIRE to OFF (page 11).* If a second degauss cycle is needed, allow a minimum interval of 20 minutes for the best result. A humming noise may be heard, but this is not amalfunction.(continued)