No Characters Appear On Screen - NEC ES1200 User Manual

No Characters Appear On Screen

Check the following:
Is the keyboard working?
Is the video display plugged in and turned on?
Are the brightness and contrast controls properly
adjusted?
Are the video display switch settings correct?
Is the video display signal cable properly installed?
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 appear, the video display or video
controller may have failed. Contact your service
representative or authorized dealer for assistance.
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Problem Solving