Acer Altos G520 - Manual (Page 138)

Appendix A: Troubleshooting 128
system requirements.
• Remove the processor(s) and re-seat them.
If you are using an add-in video controller board, do the following:
1 Verify that the video works using the onboard video controller.
2 Verify that the video controller board is fully seated in the server
board connector.
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.
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 help.
Characters Are Distorted or Incorrect
Check the following:
• Are the brightness and contrast controls properly adjusted on the
video monitor? See the manufacturer’s documentation.
• Are the video monitor’s signal and power cables properly
installed?
• Does this video monitor work correctly if plugged into a different
system?
System Cooling Fans Do Not Rotate Properly
If the system cooling fans are not operating properly, it is an indication
of possible system component failure.
Check the following:
• Is the power-on light lit? If not, see "Power Light Does Not Light".
• If your system has LED lights for the fans, is one or more of these
LEDs lit?
• Are any other control panel LEDs lit?
• Have any of the fan motors stopped? Use the server management
subsystem to check the fan status.
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