Epson WorkForce Pro WF-7820 All-in-One Inkjet Printer - Manual (Page 293)

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Caution: Never turn off the product or open the scanner unit during a cleaning cycle or you may not
be able to print.
6. When the cleaning cycle is finished, you can check to see if the nozzles are clean; click Print Nozzle
Check Pattern and click Print .
7. Check the printed pattern to see if there are gaps in the lines.
Print head is clean
Print head needs cleaning
• If there are no gaps, click Finish .
• If there are gaps or the pattern is faint, click Clean to clean the print head again.
If you don’t see any improvement after cleaning the print head up to 4 times, wait at least 6 hours without
printing. Then try cleaning the print head again. If quality still does not improve, contact Epson.
Parent topic: Print Head Cleaning
Related tasks
Cleaning the Print Head Using the Product Control Panel
Loading Paper in the Cassette and Paper Tray (Rear Paper Feed Slot)