Lenovo 4420HB2 User Manual - Page 27

Troubleshooting If you have a problem setting up or using your monitor, you might be able to solve it yourself. Before calling your dealer or Lenovo, try the suggested actions that are appropriate to your problem. Table 3-2. Troubleshooting Problem Possible cause Suggested action Reference The words "Out The system is set to a of Range" are display mode which is shown on the not supported by the screen, and the monitor. power indicator is flashing green. · If you are replacing an old monitor, reconnect it and adjust the display mode to within the specified range for your new monitor. · If using a Windows system, restart the system in safe mode, then select a supported display mode for your computer. · If these options do not work, contact the Support Center. "Selecting a supported display mode" on page 2-6 The image quality is unacceptable. The video signal cable is not connected with the monitor or system completely. Be sure the signal cable is firmly plugged into the system and monitor. "Connecting and turning on your monitor" on Page 1-4 The color settings may Select another color setting from the be incorrect. OSD menu. "Adjusting your monitor image" on page 2-3 The automatic image setup function was not performed. Perform automatic image setup. "Adjusting your monitor image"" on page 2-3 The power indicator is not lit and there is no image. · The monitors power · Be sure the power cord is connected "Connecting switch is not switched properly. and turning on. · Be sure the outlet has power. on your · The power cord is · Power on the monitor. monitor" on loose or · Try using another power cord. Page 1-4 disconnected. · Try using another electrical outlet. · There is no power at the outlet. Chapter 3. Reference information 3-3