![]() Troubleshooting – Miscellaneous – Intermittently shuts down Check that all ground cables are secure.Troubleshooting – Miscellaneous – Picture jitters or flashes Video – Out of convergence (color bleeding out from text or lines) Replace CRT (if you cannot eliminate red, green, or blue tint).If bad focus remains on one part of display, replace CRT. Adjust focus controls to their limits.Adjust external contrast and brightness controls.Video – Raster too dark, too bright, or washed out Synchronization – Black raster with single vertical or horizontal line Synchronization -Picture breaks and rolls horizontally Connect known-good monitor and verify that built-in video signal or video card is working properly.Synchronization – Picture rolls vertically Synchronization – Picture breaks into diagonal lines Vertical linearity bad (size of text differs at top vs. Horizontal linearity bad (size of text differs at sides of screen) Adjust vertical or horizontal center controls.Move unit away from monitors, fluorescent lights, or other electrical equipment.Troubleshooting Symptom Charts/Geometry – Raster not centered Adjust vertical or horizontal size controls.Troubleshooting Symptom Charts/Geometry – Raster too short, tall, narrow, or wide Make sure video connector is secure and wires are inside plastic connector. ![]() Connect a working monitor and verify that built-in video signal or video card is working properly.Troubleshooting Symptom Charts/No raster, LED on, CRT filament on Check power cable connections and power switch.Troubleshooting Troubleshooting Symptom Charts/No Raster: No raster, LED off Humidity 95% maximum, noncondensing.ĭiscontinued:Aug(the last units were manufactured in September 1993). Weight: 24.0 lbs including video and power cables (up to 25.0 lbs according to some sources).Dimensions: 13.0 height x 13.4 width x 14.0 depth.User controls: Front panel: brightness, contrast controls, power switch.Separate synchronization, negative-going TTL. Input signals: Red, green, blue analog signals.Display cable: Standard Macintosh video cable DB-15 for complete functionality.Resolution: 640 x 480 (35 kHz horizontal scan, 66.7 vertical scan).Viewable Size: 11.5-inch (total size 14.0-inch, in some documents 13-inch is stated as viewable area). The Apple Macintosh Color Display features a color 14-inch display (13-inch viewable area) Trinitron CRT (0.26 mm dot pitch). 5 History of Apple: From Apple II to Apple Cinema Dispay.2.24 Troubleshooting – Miscellaneous – Thin horizontal line on screen.2.23 Troubleshooting – Miscellaneous – Erratic or no communication with ADB device.2.22 Troubleshooting – Miscellaneous – Does not degauss.2.21 Troubleshooting – Miscellaneous – Monitor emits high-pitched noise.2.20 Troubleshooting – Miscellaneous – Black screen spots (burnt phosphors). ![]()
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