Canon Pixma MG3550 Online Manual page 327

2901
Cause
Printing of the print head alignment pattern is complete and the machine is in waiting for scanning the
sheet.
Action
Proceed to scan the printed alignment pattern.
1. Load the print head alignment sheet on the platen glass.
Load the print head alignment sheet with the printed side facing down and align the mark
upper left corner of the sheet with the alignment mark
2. Close the document cover gently, then press the machine's Black or Color button.
The machine starts scanning the print head alignment sheet, and the print head position will be
adjusted automatically.
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