AOpen AK75 User Manual download pdf (Page 92)

Troubleshooting

CPU Frequency Ratio

The system did not boot up with the frequency ratio I selected.

Selecting a higher frequency ratio may result to the CPUs or

systems instability and are not guaranteed to provide better system

performance. Power off the system and set SW1 pins 1-5 to Off

(Auto).

Monitor/Display

If the display screen remains dark after the system is turned on:

1. Make sure that the monitors power switch is on.

2. Check that one end of the monitors power cord is properly

attached to the monitor and the other end is plugged into a

working AC outlet. If necessary, try another outlet.

3. Check that the video input cable is properly attached to the

monitor and the systems display adapter.

4. Adjust the brightness of the display by turning the monitors

brightness control knob.

The picture seems to be constantly moving.

1. The monitor has lost its vertical sync. Adjust the monitors vertical

sync.

2. Move away any objects, such as another monitor or fan, that

may be creating a magnetic field around the display.

3. Make sure your video cards output frequencies are supported

by this monitor.

The screen seems to be constantly wavering.

1. If the monitor is close to another monitor, the adjacent monitor

may need to be turned off. Fluorescent lights adjacent to the

monitor may also cause screen wavering.

Power Supply

When the computer is turned on, nothing happens.

1. Check that one end of the AC power cord is plugged into a live

outlet and the other end properly plugged into the back of the

system.

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AOpen AK75 User Manual Page 92