Lenovo 7522D6U User Manual

Also see for 7522D6U: Brochure & specs

Contents

Chapter 6. Troubleshooting and diagnosticsThis chapter describes some basic troubleshooting and diagnostic programs. If yourcomputer problem is not described here, see Chapter 7, “Getting information, help,and service,” on page 61 for additional troubleshooting resources.Basic troubleshootingThe following table provides information to help you troubleshoot your computerproblem.Symptom ActionThe computer does not startwhen you press the powerbutton.Verify that:v The power cord is plugged into the rear of the computer and into a workingelectrical outlet.v If your computer has a secondary power switch on the back of the computer,make sure that it is switched on.v The power indicator on the front of the computer is on.v The voltage is set to the correct setting for your country.If you cannot correct the problem, have the computer serviced. Refer to thesafety and warranty information that is provided with your computer for a list ofservice and support telephone numbers.The monitor screen is blank. Verify that:v The monitor cable is securely attached to the rear of the monitor and to therear of the computer.v The monitor power cord is plugged into the monitor and into a workingelectrical outlet.v The monitor is turned on and the brightness and contrast controls are setcorrectly.v The voltage is set to the correct setting for your country.v The monitor signal cable is securely connected to the monitor and to themonitor connector on the computer.Note: If your computer has two monitor connectors, verify that your monitor isconnected to the option connector rather than the one in the rear of the systemboard. For more information, see "Connecting your computer" in the ThinkCentreSafety and Warranty Guide.If you cannot correct the problem, have the computer serviced. Refer to thesafety and warranty information that is provided with your computer for a list ofservice and support telephone numbers.© Copyright Lenovo 2009 55