12-10 Maintenance Chapter 12Testing and Cleaning the BJ Cartridge Print HeadThe print head in the BJ cartridge contains nozzles through which ink is propelled ontothe paper. To maintain the best possible print quality, these nozzles need to be cleanedfrom time to time. Your unit is equipped with a print head cleaning function that doesthis.Printing the Nozzle Check PatternBefore cleaning the print head, you may want to print the nozzle check pattern to testthe print head of the BJ cartridge installed in the unit. This test shows if each print headnozzle is operating properly.Refer to the flow chart (1 p. 12-9) for the correct order of testing and cleaning the BJcartridge print head.Follow this procedure to print the nozzle check pattern:1 Press Function.2 Press Cleaning.3 Press Set.• The unit prints the nozzle check pattern.When the Colour BJ cartridge is installed, the pattern includes all four colours; yellow,magenta, cyan, and black. In the colour pattern you will notice that lines are missingbetween the colours. This is normal.nPrint the nozzle check pattern again after cleaning the BJ cartridge print head to check ifcleaning corrected the problem.242464242424Ver. 1.0024 24Nozzle Check PatternIf the pattern is broken, missing,or a specific colour is not printed,clean the BJ cartridge print head.(1 p. 12-11)NOZZLE CHECK
