Apple Macintosh Performa 577 - Manual (Page 25)

Troubleshooting Symptom Charts/Video
(Continued)
- 8
Video
(Continued)
Raster not centered 1 Verify that adjacent computer equipment is properly
grounded. Move electrical devices away from monitor.
Temporarily shut off all fluorescent lights in area.
2 Adjust horizontal or vertical center control. Refer to
Adjustments chapter.
3 Replace analog board.