Canon PRO-300 Series Online Manual page 576

White Streaks Appear
Check paper and print quality settings.
Check1
Printout Results Are Unsatisfactory
Check status of ink tanks. Replace ink tank if ink has run out.
Check2
Replacing Ink Tanks
Are the print head nozzles clogged?
Check3
Follow the steps below to print a nozzle check pattern and determine whether the ink is ejected properly from the
print head nozzles.
Print the nozzle check pattern.
Step1
After printing the nozzle check pattern, examine the pattern.
• For Windows:
Printing a Nozzle Check Pattern
• For macOS:
Printing a Nozzle Check Pattern
If the pattern is not printed correctly, go to the next step.
Clean the print head.
Step2
After cleaning the print head, print the nozzle check pattern and check the result.
• For Windows:
Clean the print head
• For macOS:
Clean the print head
If it does not improve, clean the print head again.
If it still does not improve, go to the next step.
Clean the print head deeply.
Step3
After cleaning the print head deeply, print the nozzle check pattern and check the result.
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