NEC MC2200, User Manual

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5-8 Problem Solving
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Is the video display monitor plugged in and turned on?
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Are the brightness and contrast controls on the video monitor properly adjusted?
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Are the video monitor switch settings correct?
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Is the video monitor signal cable properly installed?
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Is the onboard video controller enabled?
If you are using an option video controller board, perform the following:
1. Verify that the video controller board is fully seated in the system board connector.
2. Run the RCU to disable the onboard video controller.
3. Reboot the system for changes to take effect.
If there are still no characters on the screen after you reboot the system, contact your
service representative or authorized dealer for assistance.
POST emits one long beep and two short beeps pattern to indicate a possible problem
with the video display controller. If you do not receive a beep pattern and characters do
not display, the video display or video controller may have failed. Contact your service
representative or authorized dealer for assistance.
Characters are Distorted or Incorrect
Check the following:
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Are the brightness and contrast controls properly adjusted on the video display?
Refer to the documentation supplied with your video display.
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Are the video monitor's signal and power cables properly installed?
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If the problem persists, the video monitor may be faulty or it may be the incorrect
type. Contact your service representative for assistance.
System Cooling Fans Do Not Rotate
Note:
The system has a cooling fan module (containing either
two or three fans) behind the hard disk drives. In addition, there are
two fans one directly in front of and one directly behind the system
board, including a place reserved for an optional fan directly under
the rear fan, and another cooling fan that is an integral part of each
power supply. There are no serviceable components inside the
power supply. If the power supply is opened, the manufacturer's
warranty is voided.
Check the following:
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Is AC power available at the wall outlet?
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Are the system power cords properly connected to the power supplies and the AC
wall outlets?