Problem Solving 5-11No Characters Appear on ScreenCheck the following:! Is the keyboard working? Check to see if the Num Lock light is functioning.! Is the video display monitor plugged in and turned on?! Are the brightness and contrast controls on the video monitor properly adjusted?! Are the video monitor switch settings correct?! Is the video monitor signal cable properly installed?! Is the onboard video controller enabled?If you are using a video controller board, verify that the video controller board is fullyseated in its connectorIf there are still no characters on the screen after you reboot the system, contact yourservice representative or authorized dealer for assistance.POST emits one long beep and two short beeps pattern to indicate a possible problemwith the video display controller. If you do not receive a beep pattern and characters donot display, the video display or video controller may have failed. Contact your servicerepresentative or authorized dealer for assistance.Characters are Distorted or IncorrectCheck the following:! Are the brightness and contrast controls properly adjusted on the video display?Refer to the documentation supplied with your video display.! Are the video monitor's signal and power cables properly installed?! If the problem persists, the video monitor may be faulty or it may be the incorrecttype. Contact your service representative for assistance.System Cooling Fans Do Not RotateCheck the following:! Is AC power available at the wall outlet?! Are the system power cords properly connected to the power supplies and the ACwall outlets?! Is the cooling fan module power connectors seated properly?! Is the front panel power on indicator lit?If the switches and connections are correct and the power outlet is functioning, thepower supply has probably failed. Contact your service representative for assistance.
