Canon TS5160 Online Manual page 339

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Cause
Scanning print head alignment sheet failed.
What to Do
Select OK on the printer's LCD and check the following.
• Make sure the print head alignment sheet is set in the correct position and orientation on the platen
glass.
• Make sure the platen glass and the print head alignment sheet are not dirty.
• Make sure the loaded paper is correct.
For print head alignment, load A4 or Letter-sized plain paper.
• Make sure the print head nozzle is not clogged.
Check the print head condition by printing the nozzle check pattern.
After checking the above, start over auto print head alignment from the beginning.
If the error is still not resolved, try manual print head alignment.
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