Epson Stylus Pro 4000 Reference Manual page 288

To clean the print head using the printer software, see
"Cleaning the print head" on page 104 for Windows,
"Cleaning the print head" on page 184 for Mac OS 8.6 to 9.x,
or "Cleaning the print head" on page 232 for Mac OS X.
To realign the print head using the control panel, see
"Aligning the print head" on page 34.
To realign the print head using the printer software, see
"Aligning the print head" on page 105 for Windows,
"Aligning the print head" on page 185 for Mac OS 8.6 to 9.x,
or "Aligning the print head" on page 233 for Mac OS X.
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Maintenance and Transportation