The print head is clogged. Try running the print head utility a few times. Clean the print heads by performing a head cleaning followed by printing a nozzle check pattern. A head cleaning and nozzle check pattern must be performed as a cycle. After printing a nozzle check pattern, examine the printed dot pattern. Each staggered horizontal and straight vertical line should be complete, with no gaps in the dot pattern. If there are gaps in the dot pattern, continue with another cycle. Perform up to 3 cycles if necessary.
If that does not help then you can buy the print head cleaning kit from this site http://www.fixyourownprinter.com/kea0.html
and if you want to see what is involved in cleaning the print head using the kit this link will help http://epsonhelp.freehttp.com/Printhead.html
If you would like to find out one reason why the print head clogged after changing the ink cartridge read this link http://epsonhelp.freehttp.com/why.html
if you want to really test the print output try printing the page from this link http://epsonhelp.freehttp.com/Color.html
I hope this helps you out.
and this is in the wrong forum it should be in hardware but i hope this helps