Examining the Nozzle Check Pattern
Examine the nozzle check pattern you print. Each colored square should be solid, with no gaps or lines, as shown:
■If your printout looks okay, you’re done.
■ If you see any white lines or gaps (as shown), clean the print head again; see page 34 for instructions.
Replacing an Ink Cartridge
When the red b error light flashes, an ink cartridge is low on ink. (You may also see a message on your screen.) This is a good time to obtain a new cartridge. When the red b error light stays on, you may need to replace one of the cartridges.
When a cartridge is more than six months old, you may need to replace it if printouts don’t look their best. If the quality doesn’t improve after cleaning and aligning the print head, you can replace the cartridge even if the red b error light is off.
Note: The red b error light also comes on if your paper runs out or is jammed, so make sure to check your paper before replacing a cartridge.
Checking the Ink Supply
To check your ink supply, do one of the following:
■Windows: 
icon in the lower right corner of your screen. If a cartridge is low on ink, you’ll see a window like this:
Or 
icon and select
Ink Monitor to see your ink levels. Click Buy Now to launch your web browser and order ink cartridges online.
Maintaining Your Printer 35