Operation Manual

256 Improving Print Quality
Below is a sample nozzle check pattern:
The above sample is in black and white, but the actual check pattern prints
in color.
Note:
❏ If print quality has not improved, turn the printer off and leave it
alone overnight. Then, do the nozzle check again, and repeat the head
cleaning if necessary.
❏ If the print quality still has not improved, at least one of your ink
cartridges may be old or damaged and may need to be replaced.
& See “Replacing an Ink Cartridge” on page 216
❏ If print quality remains a problem after replacing the ink cartridges,
contact your dealer.
❏ To maintain print quality, we recommend printing a few pages at
least once every month.
For Mac OS 9
Follow the steps below to clean the print head using the Auto
Nozzle Check and Cleaning utility.
1. Make sure that the printer is turned on and the H ink error
light is off.
2. Make sure that A4 or Letter size plain paper is loaded into the
sheet feeder.