Samsung PCJ522RX/XAA Service Manual page 29

10. Superimpose the Red and Green colors by pressing the
the keys.
11. To adjust RED, redo steps 5~8.
12. Use the key to make minor adjustments.
(Or the key can be used for minor adjustment.)
Samsung Electronics
Cursor Movement (when making minor adjustments)
and
Alignment and Adjustments
4-15