Canon MultiPASS C50 Service Manual page 56

Part 1: Facsimile
Caution
IB9-10
In addition:
If 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.
If 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.
• If 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.)
• If 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.
3. If the document is light, blank, or shows gaps, clean the printing
area. If this doesn't work, replace the cartridge.
Although Canon makes numerous BJ cartridges, the BC-21/21e Colour
BJ cartridge, the BC-20 Black BJ cartridge,the BC-22/22e Colour Photo BJ
cartridge, and the BC-29F Fluorescent BJ cartridge are designed
specifically for Canon's colour BJ printers, and are the only ones Canon
recommends.
Also, the BCI-21 colour and BCI-21 Blackink tanks are designed
specifically for the BC-21/21e Colour BJ cartridge, and are the only ones
Canon recommends for the BC-21/21e.
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