Canon PIXMA Pro9000 Series Quick Start Manual page 58

Printing Maintenance
Print Head Cleaning starts when the POWER lamp starts blinking green.
(5) Read the message and click Print Check Pattern to print the nozzle check pattern.
The nozzle check pattern is printed.
4
Check the Print Head condition with the printed nozzle check pattern.
See "Examining the Nozzle Check Pattern"
54
Do not perform any other operations until the Print Head Cleaning
finishes. This takes about 90 seconds.
Do not perform any other operations until the nozzle check pattern
printing finishes.
The nozzle check pattern will not be printed correctly if there is not
enough ink. Replace the ink tank if the remaining amount of ink is
insufficient.
See "Replacing an Ink Tank"
If the problem remains after performing Print Head Cleaning twice, try
Print Head Deep Cleaning.
See "Print Head Deep Cleaning"
(3) Select the ink group to clean.
Clicking Initial Check Items
displays the items to be checked
before cleaning.
(4) Click OK.
on page 36.
on page 49.
on page 55.