Apple Multiple Scan 20 Display Specifikace stáhnout pdf (Strana 38)

Troubleshooting Symptom Charts/Geometry

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Geometry

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Raster is not centered 1 Using the On-Screen Display, click Recall.

2 Check that the distortion is not due to environmental

conditions. Move the monitor.

3 Adjust the horizontal position of screen. See “User Controls”

in Adjustments. If necessary, adjust the raster center at

SW701. See “Horizontal Centering” in Adjustments.

4 Adjust vertical position of screen.

5 Double-check items 1 through 4.

6 Replace main deflection board and CRT/video board module.

See “Main Deflection and CRT/Video Board Module” in Take

Apart chapter. See Adjustments chapter for non-user

adjustments that might be necessary after board replacement.

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Apple Multiple Scan 20 Display Specifikace Strana 38