NEC HX4500 manual No Characters Appear On Screen

Models: HX4500

1 160
Download 160 pages 12.37 Kb
Page 124
Image 124

Check the following.

Is AC power available at the wall outlet?

Are the system power cords properly connected to the system and the AC wall outlet?

Is the power connector for the cooling fan connected to the system I/O

Tboard (option board fan) and the CPU base board (CPU fans)? Is the front panel power on indicator lit?

If the switches and connections are correct and the power outlet is functioning, the power supply has probably failed. Contact your service representative for assistance.

No Characters Appear On Screen

Check the following.

Is the riser card fully seated in the system I/O board connector? The riser card is the small card that the mouse and keyboard plug into.

Is the keyboard working?

Is the video display plugged in and turned on?

Are the brightness and contrast controls properly adjusted?

TAre 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.

5-8 Problem Solving

Page 124
Image 124
NEC HX4500 manual No Characters Appear On Screen