Canon iPF650 - imagePROGRAF Color Inkjet Printer User Manual page 647

6.
Check the printing results.
If the horizontal lines are not faint or incomplete, the nozzles are clear.
If some sections of the horizontal lines are faint or incomplete, the nozzles for those colors
are clogged.
If horizontal lines are faint or incomplete, follow the steps below and check again for nozzle
clogging.
1.
Clean the Printhead. (→P.632)
2.
Print a test pattern to check the nozzles.
Note
•
If you repeat these steps several times but the horizontal lines are still faint or incomplete, contact
your Canon dealer.
Printheads
Maintenance 631