Improving Print Quality 249
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Note:
If the H ink error light is flashing, you cannot clean the print head. 
Replace the appropriate ink cartridge first.
Using the Nozzle Check utility
Refer to the appropriate section below to use the Nozzle Check 
utility.
For Windows
Follow the steps below to use the Nozzle Check utility.
1. Make sure that A4 or Letter size paper is loaded in the sheet 
feeder.
Note:
Make sure that paper is not loaded into the front manual feed slot 
and the front printer cover is closed before using the Nozzle Check 
utility.
2. Access the printer software.
“Accessing the printer software for Windows” on page 366
3. Click the Maintenance tab, then click the Nozzle Check 
button.
4. Follow the on-screen instructions.
For Mac OS X
Follow the steps below to use the Nozzle Check utility.
1. Make sure that A4 or Letter size paper is loaded in the sheet 
feeder.