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| Troubleshooting |
| Symptom Charts/No Raster (Continued) - 6 | |
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| No Raster (Continued) |
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No raster with LED off | 1 | Ensure that power cord is plugged in properly. | |||
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| 2 | Check power outlet at the wall by plugging in an | |
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| 3 | electronic device that works. | |
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| If the display is plugged into a computer, ensure that | ||
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| 4 | computer is on and power cord firmly connected. | |
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| Check video cable connections at computer and monitor. | ||
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| Thumbscrews must be secure. If a video card is used, the | |
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| 5 | video cable must be properly connected to it. | |
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| Replace video and main deflection boards. See “Main | ||
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| Deflection, CRT/Video Boards and Rear Fence” in Take | |
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| Apart. Adjust cutoff and white balance. See “Cutoff and | |
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| 6 | White Balance” in Adjustments. | |
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| Send the monitor to Apple for repair. | ||
