User`s guide

Take Apart Main Deflection Board - 50
Replacement Note: 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
Focus symptom in the
Troubleshooting chapter.
Flyback Transformer