Epson Epl n3000 Service Eq E002

Hello everybody.

A Epson Epl N3000 show in display the next error: "Service Eq E002".

I have changed the unit fuser and transfer roller and error is not
solucionated. When de printer boot show in display "Ram Check
64Mb"(ok) after show "Self test" and then show de error.
could someone help me????

Very thanks.

Regards.