Canon MG5100 series On-Screen Manual page 111

Do not open the Document Cover or remove the print head alignment sheet on the Platen
Glass until adjusting the print head position is completed.
If the message "Failed to scan head alignment sheet." appears, press the
Refer to " Troubleshooting
When the completion message appears, press the
(3)
The screen will return to the Maintenance screen.
When adjusting the print head position is completed, remove the print head alignment sheet on the Platen
Glass.
Note
Press the HOME button to exit Setup and display the HOME screen.
If the print results are still not satisfactory after adjusting the print head position as described
above, adjust the print head position manually from a computer.
For details, refer to the on-screen manual:
To print and check the current head position adjustment values, select Print the head alignment
value on the Maintenance screen.
" in the on-screen manual: Advanced Guide
Advanced Guide .
OK button.
.
OK button.
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