Epson RX620 - Manual (Page 60)

60 Maintaining Your RX620
5. Examine the printout. For each row (#1 through #4), circle the vertical lines
that are most precisely printed on top of each other. You may need to use a
magnifying glass or loupe.
.
6. On the RX620 screen, enter the number for the circled line in the first row by
pressing the l and r buttons.
7. Press OK , then enter the numbers for the circled lines in each of the remaining
rows in the same way.
8. When you’re done, you see a Head alignment completed message. Press OK
to return to the Setup Menu.