98 Canon BJC-8500 User’s ManualCleaning the print headsThis section shows you how to start print head cleaning with the RESUMEbutton on the printer operation panel. For details about starting print headcleaning with the printer driver, see the Windows Print Guide or theMacintosh Print Guide.n Print head cleaning consumes ink, so perform print head cleaning onlyafter you notice a deterioration in the quality of printed pages or whenthe Nozzle Check Pattern is abnormal. (+ 97)n Before you begin, make sure both the printer and the computer areswitched on.n Print head cleaning is performed with the BJ Cartridges mounted in theprinter. Never remove the BJ Cartridges from the cartridge holder in anattempt to clean them manually.n You can also execute print head cleaning with the printer driver. Fordetails, see the Windows Print Guide or the Macintosh Print Guide.1 Make sure the printer is switched on.2 Press and hold down the RESUME button for over three seconds andrelease after the printer beeps once.3 To check the print heads, print a Nozzle Check Pattern. (+ 96)4 If the results of the Nozzle Check Pattern are not satisfactory, repeatprint head cleaning then print another Nozzle Check Pattern.Repeat print head cleaning and printing the Nozzle Check Patternuntil the test pattern is safisfactory.After five repetitions of alternately cleaning the print heads and print-ing the Nozzle Check Pattern, if the results of the Nozzle CheckPattern are still not satisfactory, replace the BJ Cartridge. (+ 99)
