Canon MG8100 series On-Screen Manual page 112

When you start printing after replacing the ink tank, the machine starts cleaning the Print Head
automatically. Do not perform any other operations until the machine completes the cleaning of
the Print Head.
If printed ruled lines are misaligned or the print head position is misaligned, adjust the print head
position.
Aligning the Print Head
See .
The machine may make noise during operation.
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