Canon PIXMA Pro9000 Series Quick Start Manual page 56

Printing Maintenance
3
Start Print Head Cleaning.
Print Head Cleaning starts when the POWER lamp starts blinking green.
Do not perform any other operations until the Print Head Cleaning
finishes. This takes about 90 seconds.
(5) Read the message and click Print Check Pattern to print the nozzle check pattern.
The nozzle check pattern is printed.
52
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"
(1) Click the Maintenance tab.
(2) Click Cleaning.
(3) Select the ink group to clean.
Clicking Initial Check Items displays
the items to be checked before
cleaning.
(4) Click Execute.
on page 36.