Acer Altos R510, Service Manual, Page: 108 / 143

101 Chapter 4
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Remove all add-in cards and see if the video returns. If successful, add the cards back in one at a
time with a reboot between each addition.
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Make sure the memory DIMMs comply with the system requirements.
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Make sure the memory DIMMs have been populated according to the system requirements.
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Remove the memory DIMMs and re-seat them.
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Make sure the processor(s) comply with the system requirements.
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Make sure the processor(s) have been populated according to the system requirements.
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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:
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Are the brightness and contrast controls properly adjusted on the video monitor? See the
manufacturer's documentation.
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Are the video monitor's signal and power cables properly installed?
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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:
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Is the power-on light lit? If not, see "Power Light Does Not Light"
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If your system has LED lights for the fans, is one or more of these LEDs lit?
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Are any other control panel LEDs lit?
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Have any of the fan motors stopped? Use the server management subsystem to check the fan
status.
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Have your fans speeded up in response to an overheating situation?
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Have your fans speeded up in response to a fan that has failed?
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Are the fan power connectors properly connected to the server board?
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Is the cable from the control panel board connected to the both the control panel board and to the
server board?
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Are the power supply cables properly connected to the server board?
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Are there any shorted wires caused by pinched-cables or have power connector plugs been forced
into power connector sockets the wrong way?