Canon PIXMA MX850 Series Quick Start Manual page 126

(2) Repeat the same procedure until you finish inputting the pattern number for columns B to
G, then press the OK button.
(3) Confirm the displayed message and press the OK button.
The second pattern is printed.
6
Look at the second printout, and then adjust the print head position.
(1) Check the printed patterns, and use the [ or
] button to input the number of the pattern in
column H that has the least noticeable vertical
streaks.
(2) Repeat the same procedure until you finish
inputting the pattern number for columns I to
O, then press the OK button.
(3) Confirm the displayed message and press the
OK button.
The third pattern is printed.
122 Routine Maintenance