Canon Pro-1000 series Online Manual page 277

The Print head cleaning screen will appear.
6. Select Cleaning, then press the OK button.
The confirmation screen will appear.
7. Select Yes, then press the OK button.
The printer starts cleaning the print head.
Do not perform any other operations until the printer completes the cleaning of the print head. This takes
about 6 minutes.
The pattern print confirmation screen will appear.
8. Select Yes, then press the OK button.
The nozzle check pattern will be printed.
9. Examine the nozzle check
Note
• If the problem is not resolved after cleaning the print head twice,
pattern.
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clean the print head deeply.