Acer Network Device Altos R520, Руководство пользователя

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5 Troubleshooting 138
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? Refer to the documentation that came with the
video monitor.
• Are the video monitor’s signal and power cords properly
connected.
• Is the video monitor working correctly when plugged into a
different system?
System cooling fan do not rotate properly.
If the system cooling fan is not operating properly, it is an indication of
possible system component failure.
Check the following:
• Is the power indicator lit? If not, see “Power indicator does not
light.” on page 132 .
• Have any of the fan motors stopped? Use the server management
subsystem to check the fan status.
• Have your fans speeded up in response to an overheating
situation?
• Have your fans speeded up in response to a fan that has failed?