I’m hoping someone who has experience with the 9890/9900 head failures can help me determine whether the problem I’m having with the VLM and LC nozzles is recoverable, or if the printhead is done.
I’ve attempted to attach a photo of recent nozzle checks. The upper print is prior to attempts to clear the nozzles and the lower is after. The LC nozzle pattern is pink on the lower print, because the LC cart was replaced with one filled with Piezoflush.
I have performed all of the steps in the Inkjet Mall cleaning video, and parked the head over a folded paper towel saturated with Piezoflush for a few hours. (not 24, yet!) The LC cart was replaced with one filled with Piezoflush and purges prints were performed until the LC ink was flushed. The wiper was replaced about 4 months ago when we first had trouble with a couple of nozzles. The capping station and dampers have not been replaced. We have used only ConeColor Pro ink for the past two years, and Epson before that. Only the cleaning functions available from the main menu have been used.
As one can see, progress has been made in clearing the VLM nozzles, but the LC has hardly changed at all. I don’t know if that’s telling me anything about the condition of the capping station or not, since these colors share one. The pattern of LC dropped nozzles has remained the same through a couple of weeks of attempts to unclog.
I don’t want to go through the effort and expense of replacing more parts if it’s a lost cause. Is there anything else I should try?