Troubleshooting; Troubleshooting Checklist - Mitsubishi Electric CM33-TL User Manual

Troubleshooting

Troubleshooting Checklist

This section of the manual is designed to help you with problems that you may
encounter with your computer. To efficiently troubleshoot your system, treat
each problem individually. This is to ensure an accurate diagnosis of the prob-
lem in case a problem has multiple causes.
Some of the most common things to check when you encounter problems
while using your system are listed below.
Monitor/Display
If the display screen remains dark after the system is turned on:
The picture seems to be constantly moving.
MAN-0CM33-001
1. The power switch of each peripheral device is turned on.
2. All cables and power cords are tightly connected.
3. The electrical outlet to which your peripheral devices are
connected is working. Test the outlet by plugging in a lamp or
other electrical device.
4. The monitor is turned on.
5. The display's brightness and contrast controls are adjusted
properly.
6. All add-in boards in the expansion slots are seated securely.
7. Any add-in board you have installed is designed for your system
and is set up correctly.
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. Chekc 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 bright-
ness control knob.
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.
MC Series Computers
APPENDIX B - TROUBLESHOOTING
B-1