Canon PIXMA TS302 Online Manual page 275

After performing the print head cleaning, print the nozzle check pattern and examine the pattern.
• If problem is not resolved after performing print head cleaning twice:
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:
Ink may have run out. Replace the FINE cartridge.
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