86 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 the ruled lines are shifted after running print head maintenance, align the Print Head.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 80 and take the appropriate action.z Increase the Print Quality setting in the printer driver settings. This may improve the print results.Refer to the PC Printing Guide on-screen manual.See “Print Results Not Satisfactory” on page 107.Step 1See “Printing the Nozzle Check Pattern” on page 87.If lines are missing or if white streaks appear After cleaning thePrint Head, printand examine thenozzle checkpattern.Step 2See “Print Head Cleaning” on page 89.If the problem is not resolved after performingPrint Head Cleaning twiceStep 3See “Print Head Deep Cleaning” on page 90.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 91.NoteYou can also perform the maintenance operation from your computer. For details, refer to the PC PrintingGuide on-screen manual.
