Canon mg6850 series Online Manual page 895

If the problem is not resolved after performing print head deep cleaning, turn off the machine and perform
print head deep cleaning again 24 hours later.
• If problem is not resolved after performing print head deep cleaning twice:
If print head deep cleaning does not resolve the problem, the print head may be damaged. Contact your
nearest Canon service center to request a repair.
Perform print head alignment.
Check3
Aligning the Print Head
Note
• If the problem is not resolved after performing the print head alignment, perform print head alignment
manually from your computer.
• For Windows:
Aligning the Print Head Position
• For Mac OS:
Aligning the Print Head Position
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