Epson Stylus Pro 7800 User Manual page 318

To perform a nozzle check using the printer software, see
"Checking the print head nozzles" on page 68 for Windows,
"Checking the print head nozzles" on page 140 for Mac OS
9.x, or "Checking the print head nozzles" on page 192 for Mac
OS X.
To clean the print head using the control panel, press the
Menu r button for 3 seconds.
To clean the print head using the printer software, see
"Cleaning the print head" on page 70 for Windows, "Cleaning
the print head" on page 142 for Mac OS 9.x, or "Cleaning the
print head" on page 194 for Mac OS X.
To realign the print head using the control panel, see
"Aligning the print head" on page 225.
To realign the print head using the printer software, see
"Aligning the print head" on page 71 for Windows, "Aligning
the print head" on page 143 for Mac OS 9.x, or "Aligning the
print head" on page 195 for Mac OS X.
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Maintenance and Transportation