50 Routine MaintenanceWhen Printing Becomes Faint or Colors Are IncorrectWhen printing becomes faint or colors are incorrect even if ink remains in the ink tanks, the printhead nozzles are probably clogged. Print the nozzle check pattern to confirm the condition of thenozzles and then perform Print Head Cleaning.If print results are not satisfactory, performing Print Head Alignment may improve print quality.z If the Ruled Lines Are ShiftedNoteBefore performing maintenancez Open the Scanning Unit (Printer Cover) and make sure that all lamps for the ink tanks are lit red.If not, see “Getting the Ink Status Information” on page 43 and take the appropriate action.z Increase the Print Quality setting in the printer driver settings.See “Print Results Not Satisfactory” on page 73.Step 1See “Printing the Nozzle Check Pattern” on page 51.If lines are missing or if white streaks appear After cleaning thePrint Head, printand examine thenozzle checkpattern.Step 2See “Print Head Cleaning” on page 54.If the problem is not resolved after performingPrint Head Cleaning twiceStep 3See “Print Head Deep Cleaning” on page 55.NoteIf Print Head Deep Cleaning does not resolve the problem, the Print Head may be damaged. Contact yourCanon service representative.See “Aligning the Print Head” on page 56.NoteYou can also perform the maintenance operation from your computer. For details, refer to the PC PrintingGuide on-screen manual.
