292Routine MaintenanceReplacing a BJ CartridgeIf print quality remains poor even after replacing the ink tanks and cleaning the print heads,the print head is worn out and you must replace the corresponding BJ cartridge.Use only the following BJ cartridges with the S450 printer:• BC-30e Black BJ Cartridge• BC-31e Color BJ Cartridge• BC-32e Photo BJ Cartridge (optional)Make sure that the printer is turned on and open the front cover. Thecartridge holder moves to the left side.Note1