Canon TS8000 series Online Manual page 427

Perform print head deep cleaning.
If the problem is not resolved after performing print head deep cleaning, turn off the printer 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.
When using paper with one printable surface, check the correct printable side
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of the paper.
Printing on the wrong side of such paper may cause unclear prints or prints with reduced quality.
When you load paper on the rear tray, load paper with the printable side facing up. When you load paper in the
cassette, load paper with the printable side facing down.
Refer to the instruction manual supplied with the paper for detailed information on the printable side.
• When copying, see also the sections below:
Is platen glass dirty?
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Clean the platen glass.
Cleaning the Platen Glass and Document Cover
Make sure original is properly loaded on platen glass.
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Loading Originals
Is original loaded with side to be copied facing down on platen glass?
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Did you copy a printout done by this printer?
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If you use a printout done by this printer as the original, print quality may be reduced depending on the condition
of the original.
Print from the printer directly, or reprint from the computer if you can reprint from it.
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