HP customer service claimed that they no longer repair CP1515N but replaced with a refurnished set at almost half the value of the original set if the set warranty has expired. Therefore I intend to do my own servicing if only I know how. Can anyone provide some clues as to how to dismantle and service my cp1515n which is only 2 years old.
http://www.partshere.com/ they have a great search function which actually shows you a blow-up parts listing for the inside of the printer. As to how to actually diagnose and repair it, HP offers classses but they are probably more expensive than buying a new printer.