Product guide

106
Chapter Five Problem Solving
No Characters Appear on
Screen
Check the following:
q Is the keyboard functioning? Check to see that the “Num Lock” LED is
illumintated.
q Is the video monitor plugged in and turned on?
q Are the brightness and contrast controls on the video monitor properly
adjusted?
q Are the video monitor switch settings correct?
q Is the video monitor signal cable properly installed?
q Is the onboard video controller enabled?
If you are using an add-in video controller board, perform the following:
1. Verify that the video controller board is fully seated in the server board
connector.
2. Reboot the system for changes to take effect.
3. If there are still no characters on the screen after you reboot the system
and POST emits a beep code, write down the beep code you hear. This
information is useful for your service representative. See “Port-80 Codes
and Countdown Codes.”
4. If you do not receive a beep code and characters do not appear, the video
display monitor or video controller may have failed. Contact your service
representative or authorized dealer for help.
Characters Are Distorted or
Incorrect
Check the following:
q Are the brightness and contrast controls properly adjusted on the video
monitor? See the manufacturer’s documentation.
q Are the video monitor signal and power cables properly installed?
If the problem persists, the video monitor may be faulty or it may be the incorrect
type. Contact your Micron technical support representative for help.