Canon imagePROGRAF PRO-300 PRO-300 series User Manual - Page 489

White Streaks Appear Check1 Check paper and print quality settings. Printout Results Are Unsatisfactory Check2 Check status of ink tanks. Replace ink tank if ink has run out. Replacing Ink Tanks Check3 Are the print head nozzles clogged? Follow the steps below to print a nozzle check pattern and determine whether the ink is ejected properly from the print head nozzles. Step1 Print the nozzle check pattern. After printing the nozzle check pattern, examine the pattern. • For Windows: Printing a Nozzle Check Pattern • For macOS: Printing a Nozzle Check Pattern If the pattern is not printed correctly, go to the next step. Step2 Clean the print head. After cleaning the print head, print the nozzle check pattern and check the result. • For Windows: Clean the print head • For macOS: Clean the print head If it does not improve, clean the print head again. If it still does not improve, go to the next step. Step3 Clean the print head deeply. After cleaning the print head deeply, print the nozzle check pattern and check the result. 489