Hi, I posted a message about a month back about receiving a faulty z3200. At this point the printer is about a month old and still not working properly. Getting HP to send a tech out to fix this thing has been like pulling teeth. All they want to do is send me replacement printheads. So here is an example of the problem. You can see in these two linearization charts, the green channel goes from fully functional to non-existant in the course of 7 minutes.
http://www.flickr.com/photos/30597786@N05/4987550128/http://www.flickr.com/photos/30597786@N05/4986949969/I am 99% certain that it is not a printhead issue at this point since the same thing has already happened with the matte black and magenta channels. Any ideas what could be causing this? It almost seems like a loose connection somewhere, but I don't know enough about printer mechanics to pinpoint the issue (I should probably learn more about this subject).