Epson SureColor P20000 Standard Edition 64" Large-Format Inkjet Printer - Manual (Page 156)

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5. Click Print .
The nozzle pattern prints.
6. Check the printed pattern to see if there are gaps in the lines.
Note: Use at least a 10× eye loupe to examine the pattern for any missing or deflected dots or
segments.
Print head is clean
Print head needs cleaning
7. If there are no gaps, click Finish .
If there are gaps or the pattern is faint, clean the print head.
Parent topic: Print Head Nozzle Check
Related tasks
Cleaning the Print Head Using a Computer Utility
Print Head Cleaning
If print quality has declined and the nozzle check pattern indicates clogged nozzles, you can clean the
print head. Use the nozzle check pattern to determine which colors need cleaning. You can save ink by
cleaning only selected colors (control panel only).
Note: You cannot clean the print head if an ink cartridge is expended, and may not be able to clean it
when a cartridge is low. You must replace the cartridge first.
Cleaning the Print Head Using the Product Control Panel
Cleaning the Print Head Using a Computer Utility