Canon MAXIFY MB5420 MB5400 series PDF User Manual Mac - Page 925

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 Tanks Check3 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. If the problem is not resolved after performing print head deep cleaning, turn off the printer and perform print head deep cleaning again 24 hours later. When you turn the printer off, do not unplug it. • If problem is not resolved after performing print head deep cleaning twice: If print head deep cleaning does not resolve the problem, the print head may be damaged. Contact your nearest Canon service center to request a repair. Check4 When using paper with one printable surface, make sure paper is loaded with printable side facing down. Printing on the wrong side of such paper may cause unclear prints or prints with reduced quality. Load paper with the printable side facing down. Refer to the instruction manual supplied with the paper for detailed information on the printable side. 925