You need to
clean the suction cap whenever you see a message on the LCD screen
or at the end of every week that you use the printer. You may also
need to clean the suction cap if you experience difficulty cleaning
nozzles after performing a nozzle check. Even if the message is not
displayed, follow the steps here to clean the suction cap.
Note: If you
continue to use the printer without cleaning the suction cap, the
ink nozzles may clog and print quality may decline.