Canon PIXMA MP620 User Manual - Page 93

Examining the Nozzle Check Pattern Page 93 of 815 pages Advanced Guide Troubleshooting Contents > Routine Maintenance > When Printing Becomes Faint or Colors Are Incorrect > Examining the Nozzle Check Pattern Examining the Nozzle Check Pattern Examine the nozzle check pattern, and clean the Print Head if necessary. 1. Check if there are no missing lines in the pattern (1) or no horizontal white streaks in the pattern (2). (A) No missing lines/No horizontal white streaks (B) Lines are missing/Horizontal white streaks are present 2. Select the pattern that is closer to the printed nozzle check pattern on the confirmation screen. For (A) (no missing lines or no horizontal white streaks) in both (1) and (2): Select All A and press the OK button. The cleaning is not required. The screen returns to the Maintenance screen. For (B) (lines are missing or horizontal white streaks are present) in (1) or (2): (1) Select Also B and press the OK button. Clean the Print Head. The cleaning confirmation screen appears. (2) Select Yes and press the OK button. The machine starts cleaning the Print Head. See Cleaning the Print Head.