You can run
a Power Cleaning using the control panel on your product.
Note: After a
Power Cleaning, you must turn off the product and wait at least 12
hours before running another print head cleaning.
If you still see gaps in the
nozzle check pattern after running a Power Cleaning, turn the
product off and wait for at least 12 hours. Then run the nozzle
check again and run a Cleaning if necessary. If print quality does
not improve, run a Power Ink Flushing. If print quality still does
not improve, contact Epson support.