Canon PIXMA MG6821 User Manual - Page 882

White Streaks Appear Check1 Check paper and print quality settings. Print Results Are Unsatisfactory Check2 Check status of ink tanks. Replace ink tank if ink has run out. Replacing Ink Check3 Is orange tape or protective film still on ink tank? Make sure all the protective film is peeled off to expose the Y-shaped air hole, as shown below (A). If the orange tape remains on the ink tank (B), peel it off. Check4 Print nozzle check pattern and perform any necessary maintenance operations such as print head cleaning. Print the nozzle check pattern to determine whether the ink ejects properly from the print head nozzles. For details on printing the nozzle check pattern, print head cleaning, and print head deep cleaning, see If Printing Is Faint or Uneven. • If nozzle check pattern is not printed correctly: Check if the ink tank for the problem color is empty. If the ink tank is not empty, perform print head cleaning and try printing the nozzle check pattern again. • If problem is not resolved after performing print head cleaning twice: Perform print head deep cleaning. 882