7. Press down gently on the high side of the ink cartridge until the inkcartridge clicks into the print head unit.8. Close the top cover.9. Press the CARTRIDGE button. The cartridge holder moves to thehome position and the printer starts cleaning the print head.n Replacing BJ CartridgesFollow this procedure to replace or exchange a BJ Cartridge.Before you replace a worn BJ Cartridge...When a print head becomes worn out, the printing is no longer crisp andclear, gaps may appear in characters, and lines may appear broken ornot complete. However, these and similar problems can also be causedby a clogged print head.Before you decide to replace the BJ Cartridge, always clean the printhead to confirm that the problem is not a clogged print head.72 Chapter 5 Daily Operation and Printer MaintenanceBCI-11/BCI-12 BCI-10