Canon MultiPASSTM C50 When to Replace the BJ Cartridge, 10Maintaining Your MultiPASS C50 Chapter

When to Replace the BJ Cartridge

How frequently you need to replace your MultiPASS C50's BJ cartridge or one of its ink tanks depends on how you use your MultiPASS C50. If you print a good deal of graphics, halftones, or greyscales, you will need to replace the cartridge more often than if you print mainly text. (See page A-9 for details on the life expectancy of BJ cartridges.)

To help ensure the maximum life for your cartridges, always follow the guidelines for cartridge maintenance given in ºGuidelines for Using and Maintaining BJ Cartridgesº on page 2-27.

In general, you will need to replace the BJ cartridge in the following situations:

JIf you have been using a BC-21/21e Colour BJ cartridge for over six months or the BC-20 Black BJ cartridge for over a year.

JIf your printed output is not crisp and clear or has gaps in the characters (missing dots), even after you have cleaned the print head ®ve times as described above.

JIf your colour printouts appear to be missing a colour, even after you have cleaned the print head ®ve times as described above.

In addition:

JIf you are using the BC-21/21e Colour BJ cartridge and your output is blank, one of the ink tanks is probably empty and needs to be replaced. Print the NOZZLE CHECK test pattern to check whether the BJ cartridge needs replacing or not. See page 9-8 for details.

JIf the message CHANGE CARTRIDGE appears in the LCD display, the BJ cartridge may have run out of ink. This message also appears if the MultiPASS C50 has to store a fax in its memory because the cartridge is out of ink.

If this message appears, do the following:

1. Press START/COPY to print any faxes in memory.

NIf the printout appears normal, you do not need to replace the BJ cartridge. (Sometimes cleaning the print head or re-installing the cartridge will clear up the problem.)

NIf the print is light or shows gaps, go to step 2.

2.If there was no fax in memory, or if the fax's print was light, blank, or showed gaps, print or copy a document to make sure the problem is not with the machine that sent the fax.

9-10Maintaining Your MultiPASS C50 Chapter 9