Epson EcoTank Pro ET-16680 Series User Manual page 159

Maintaining the Printer
Important:
c
❏ Do not open the scanner unit or turn off the printer during head cleaning. If the head cleaning is incomplete, you
may not be able to print.
❏ Head cleaning consumes ink and should not be performed more than necessary.
❏ When ink is low, you may not be able to clean the print head.
❏ If print quality has not improved after repeating nozzle check and head cleaning 3 times, wait for at least 12
hours without printing, and then run the nozzle check again and repeat the head cleaning if necessary. We
recommend turning off the printer by using the
Cleaning.
❏ To prevent the print head from drying out, do not unplug the printer while the power is on.
1. Select Maintenance on the printer's control panel.
2. Select Print Head Nozzle Check.
3. Follow the on-screen instructions to load paper and print the nozzle check pattern.
4. Check the printed pattern to see if the print head nozzles are clogged.
❏ A:
All lines are printed. Select
❏ B or close to B
Some nozzles are clogged. Select
❏ C or close to C
If most lines are missing or not printed, this indicates most nozzles are clogged. Select
check feature, and then run Power Cleaning. For details, see "Related information" below.
5. When cleaning is finished, print the nozzle check pattern again. Repeat cleaning and printing the pattern until
all lines are printed completely.
Important:
c
If print quality has not improved after repeating nozzle check and head cleaning 3 times, wait for at least 12 hours
without printing, and then run the nozzle check again and repeat the head cleaning if necessary. We recommend
turning off the printer by using the
>
Improving Print, Copy, Scan, and Fax Quality
P
button. If print quality has still not improved, run Power
. No further steps are needed.
, and then follow the on-screen instructions to clean the print head.
P
button. If print quality has still not improved, run Power Cleaning.
159
>
Checking and Cleaning the Print Head
to exit the nozzle