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M440LX Server System Product Guide
209
No Characters Appear on Screen
Check the following:
❑ Is the keyboard working?
❑ Is the video 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 an add-in video controller board, do the following:
1. Verify that the video controller board is fully seated in the system board
connector.
2. Run the SCU to disable the onboard video controller and specify that an
offboard VGA/EGA adapter is installed.
3. Reboot the system for changes to take effect.
4. 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 “POST Beep
Codes” on page 213.
5. 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 assistance.
Characters Are Distorted or Incorrect
Check the following:
❑ Are the brightness and contrast controls properly adjusted on the video
monitor? Refer to the manufacturer’s documentation.
❑ 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 service representative or authorized dealer for
assistance.