See "Print Head Deep Cleaning - Canon PIXMA MP800 User Manual

(3) Use [ ] or [ ] to select <Yes> and then press [OK].
The machine starts the Print Head cleaning.
Important
3
Check the status of the Print Head.
After Print Head cleaning finishes, the nozzle check confirmation screen is displayed. Print
the nozzle check pattern to verify that the Print Head nozzles are clean. See
Nozzle Check Pattern" on page
Note
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 more ink than standard
print head cleaning, so perform this procedure only when necessary.
Note
1
Press [ON/OFF] to turn on the machine.
See "Turning on the Machine" on page
2
Perform deep cleaning of the Print Head.
(1) Display the Maintenance screen.
See "Performing Maintenance" on page
(2) Use [ ] or [ ] to select <Deep cleaning> and then press [OK].
The confirmation screen is displayed.
Chapter 11
(3)
Do not perform any other operations until the Print Head cleaning
finishes. This takes about 50 seconds.
102.
If you perform cleaning and nozzle check twice and the result does not
improve, then perform Deep cleaning.
See "Print Head Deep Cleaning" on page
Ensure that the Inner Cover is closed.
17.
(2)
105.
102.
Routine Maintenance
"Printing the
105