Apple Multiple Scan 20 Display Spécifications télécharger pdf (Page 36)

Troubleshooting Symptom Charts/Video

(Continued)

- 9

Video

(Continued)

Colors are too green,

red, or blue, and the

screen is unreadable

1 Using the On-Screen Display, check Color Control. Refer to

the linked user’s manual in Adjustments chapter.

2 Ensure that the video card or computer video port is good by

connecting a known-good monitor.

3 Ensure that video cable is properly connected and

thumbscrews are secure. If a video card is used, the video

cable must be properly attached to it.

4 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 Spécifications Page 36