Canon 900D - i Color Inkjet Printer Printing Manual - Page 41
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Print Head Deep Cleaning
If print quality does not improve by standard print head cleaning, try print head deep cleaning, which is a
more powerful process. Print head deep cleaning consumes ink, so perform this procedure only when
necessary.
1 1 1 1
Ensure that the printer is on.
2 2 2 2
Print Head Deep Cleaning.
(1) Press the Menu button.
The process takes one or two minutes to complete, so simply wait until the Power lamp stops flashing.
After print head cleaning finishes
After print head deep cleaning finishes, print the nozzle check pattern to verify that the print head
nozzles are clean. See "Printing the Nozzle Check Pattern" on page 38.
When one specific color only does not print, see "Replacing Ink Tanks" on page 35.
If the problem remains, make sure that ink remains in the ink tank, turn off the printer's power for at
least 24 hours, and then perform deep cleaning of the print head again.
If the problem still remains, the print head may be damaged. Contact your local Canon service
representative.
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(2) Use the
buttons to select
Maintenance and then press the OK button.
The maintenance menu is displayed.
(3) Use the
buttons to select Deep
cleaning and then press the OK button.
The confirmation screen is displayed.
(4) Use the
buttons to select Yes and
then press the OK button.