I have an Epson R320 Printer. error message;service required. printer parts are at end of service life see service manual for details. I can not find anything in the service manual about this. This printer has been working fine I was changing printer cartridges and it came up with the above message, and it shut down the red light indicating out of paper is blinking but it is not out of paper and there is nothing jammed. It will not do any thing. How can I fix the problem?

This message indicates that your waste ink pads are full and require replacing. Replacement is costly, messy and requires the printer to be taken completely apart. Most often the counter has "jumped" to the end of life number, this especially happens where 3rd party or refilled inks have been used. If you believe this to be the case and there is no sign of ink leakage and the pads look fairly clean then you can just reset the counter using special software called the SSC utility. See these sites:
http://www.ssclg.com/epsone.shtml
http://inkjetprinterhelp.us/epsonSSC.html
More information about this issue and the "official" Epson resetter is available from the Epson web site, please read this link:
http://www.epson.com/cgi-bin/Store/support/InkPadsForm.jsp

Please take a moment to rate this solution. Thanks.