Jackie - We have 6 - HP 90's that run about 4 hrs every day and have for the last several months. We have the same problem with yellow printheads. Not every yellow printhead, but I would say most. When they do not last the 100% like the report says, we call HP and they send us new ones. The printheads are not cheap and they are guaranteed.
Marcia From: [email protected] [mailto:[EMAIL PROTECTED] On Behalf Of toasterboy66 Sent: Monday, August 04, 2008 12:42 PM To: [email protected] Subject: [HPDesignJet_Printers] Re: Problem with yellow printhead on dj 130nr --- In [email protected] <mailto:HPDesignJet_Printers%40yahoogroups.com> , "jackieinhove" <[EMAIL PROTECTED]> wrote: > > Hi, > > I wonder if anyone could help out there? I have had this recurrent > problem with my dj130 where the yellow printhead fails after approx > two weeks. When I say fail, I mean banding occurs and the yellow ink > stop printing properly. I have updated my firmware etc. I have also > used various cleaning solutions to clean the printheads, but to no > avail. It seems to last 2 weeks and they thats it!! for some unknown > reason. It also occurs with light cyan but only after 2 months, which > I can afford. But I cannot afford to keep changing the yellow > printhead obviously. I have done this approx 4-5 times now. > > Jackie > Maybe ink, but if a new Cartridge doesn't solve it, look for hardware defects. Yellow is the first PH, LC is the last, might be headcrashes, what are you printing on? is it very thick? Otherwise check your carriage height (or have someone to do it). The heads are prefilled, maybe you're just printing them "empty" without any ink coming through the tubes. Are the failed ones noticeably lighter than the other ones? If so, check the tubes for air, if there are bubbles, mark their position with a pen, and check if they move when you print. You're looking at a new ISS and, if you're at it, tubes. If the PH aren't lighter, check the service station, the capping might be faulty. Catch the Carriage when its underway by removing the power chord and check if the Service station, if there's anything abnormal visible (paper, dirt, the capping mech is skewed, stuff like that. 2 weeks of proper function seems too sporadic for an electronic electronic problem.
