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| Problems | Points to check with possible solutions |
7) “ Out of range” error | Use the graphics board’ s utility software to change | ||
| message appears. | the frequency setting. (Refer to the manual of the | |
| (Example) | graphics board.) | |
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E
•Whenever an error signal message appears, the signal frequency will be displayed in red.
•Error messages will remain on the screen for 30 seconds, and then disappear. An error message may not appear at all if the signal frequency is extremely high or extremely low.
n Imaging problems
Problems | Points to check with possible solutions |
1) The screen is partially dark. | The CRT is not warmed up. Allow 30 minutes for |
| the monitor to stabilize. |
| Degauss the screen. (Use the degaussing feature in |
| the ScreenManager’s “Others” menu. See page |
| 35.) |
| This problem may be caused by the earth's |
| magnetism. Adjust the uniformity in the |
| ScreenManager's “Screen” menu. See page 22. |
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2) The entire screen is dark. | Adjust the contrast and brightness using the |
| ScreenManager’s “Screen” menu. See page 20. |
| Some signal timings can be the cause of this |
| problem. To correct this, turn off the monitor, |
| then hold down the |
| “down” arrow key while turning on the monitor |
| again. This will change the signal timing and |
| brighten the screen. If the above operation is |
| repeated, the screen becomes dark again. |
4 TROUBLESHOOTING 45