The Epson printers do not have removable heads like the Canons. I believe I saw Lisa mention in another post that it has to be serviced if the head gets clogged. If you contact Kopykake, they may be able to make some suggestions for you.
missyek is right. If you're not out of ink and you've already run the cleaning cycle multiple times, waited overnight and your print head is still clogged, it might need to be serviced. If service is too costly and you're ready to throw your printer out, you can try this as a last resort...
http://www.inkjetart.com/tips/cleaning.html
HTH
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