Epson Stylus 1520 User Manual page 215

4. Follow the on-screen messages.
While the printer performs the cleaning cycle, the Pause
light flashes.
c
Caution:
Never turn off the printer while the Pause light is
flashing. Doing so may damage the printer.
5. After finishing the cleaning, click Print nozzle check
pattern in the Head Cleaning dialog box, or print a few
lines from a document to confirm that the heads are clean
and to reset the cleaning cycle.
Nozzle check pattern:
The above sample is in black and white, but the actual check pattern
prints in color.
In the check pattern, if you find that any segments are missing
from the test lines, you may need to repeat the head cleaning
and print the nozzle check pattern again.
If print quality hasn't improved after repeating this procedure
four or five times, try other recommendations listed in this
chapter. If print quality still has not improved, contact your
dealer.
Troubleshooting
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