User`s guide

Basics Repair Issue: Focus Adjustment after Replacing Main Deflection
Repair Issue: Focus Adjustment after
Replacing Main Deflection Board
After replacing the main deflection board on an AppleVision
1710 or 1710AV display, the screen focus might require
adjustment. If the screen focus is poor, adjust the horizontal
and vertical focus controls on the flyback transformer. For
complete instructions, refer to the section “Adjusting the
Display after Replacing the Main Deflection Board” in the
Troubleshooting chapter.