We use an HP Designjet 5000 (labeled as a Kodak MatchPrint Inkjet 5042) as a color proof printer for our printing company. We decided to install new printheads after 20,000+ hours/six years of use (fairly light use) even though we did not get any warnings. The printer accepted four out of six printheads, giving a message "reseat printhead" on the other two. Even though we removed, cleaned and replaced the printheads, we could not get rid of the message. We tried a hard shutdown, cutting off main power and un-plugging the unit, to no avail.
We re-installed one of the old printheads ( the cyan ) and the machine accepted it. Tried the same thing with the light-cyan printhead and the machine accepts it, but now says it needs replacement. When "recovering" the printheads, we get a "calibration error 1042" at 60% completion.
Any thoughts? Should we just ask for a replacement for the rejected printheads, or is there some other issue we should check? What little discussion we come across on the HP forums mentions stuff like lens replacement, but nothing really on the "reseat printhead" issue.