Canon BJC-3000 - Manual (Page 147)

147 Routine Maintenance
Cleaning the Print Head
4
When a confirmation message appears, make sure that the printer is
switched on and then click the OK button. Print head cleaning begins. (It
takes about a few minutes until print head cleaning is completed and the
POWER lamp stops flashing.)
5
Print a nozzle check pattern to confirm the success of deep print head
cleaning.
Printing a Nozzle Check Pattern
If the cleaning had no effect, perform normal print head cleaning and deep
print head cleaning again. After cleaning the print head several times, if the
nozzle check pattern is not satisfactory, the print head may be worn out and
the BJ Cartridge must be replaced.
Replacing the BJ Cartridge
Note