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Solution
If print quality does not improve by standard Print Head Cleaning, try Print Head Deep Cleaning, which is a more powerful process. Note that cleaning the Print Head causes used ink to be absorbed in the ink absorber. Print Head Deep Cleaning consumes more ink than standard Print Head Cleaning, so perform this procedure only when necessary.
1. Make sure that the machine is on.
2. Press the Maintenance button repeatedly until y appears.
3. Press the Black or Color button.
Caution
If Print Head Deep Cleaning does not improve the print quality, contact a Canon service representative.