Canon PRO-100S series Online Manual page 491

Perform the Print Head Deep Cleaning.
If the problem is not resolved after performing the Print Head Deep Cleaning, turn off the printer and
perform another Print Head Deep Cleaning after 24 hours.
• If the problem is not resolved after performing the Print Head Deep Cleaning twice:
If Print Head Deep Cleaning does not resolve the problem, the print head may be damaged. Contact the
service center.
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 referring to Aligning the Print Head Position from Your Computer.
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