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 MultiPASS is equipped with a print head cleaning function thatdoes this.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 MultiPASS. This test shows if eachprint head nozzle is operating properly.Refer to the flow chart (1 p. 12-8) for the correct order of testing and cleaning the BJcartridge print head.Follow this procedure to print the nozzle check pattern:1 Press .2 Press .3 Press .• The MultiPASS prints the nozzle check pattern.When the Color BJ cartridge is installed, the pattern includes all four colors; yellow,magenta, cyan, and black. In the color pattern you will notice that lines are missingbetween the colors. This is normal.nPrint the nozzle check pattern again after cleaning the BJ cartridge print head to check ifcleaning corrected the problem.2424246424242424YELLOWMAGENTACYANBLACKNozzle Check PatternIf the pattern is broken, missing,or a specific color is not printed,(1Cleaning the BJ CartridgePrint Head, p. 12-11).SetNOZZLE CHECK10CleaningFunction
