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Thank you very much for your response. Good description of this HP ink system. There seem to be two pumps. And (perhaps) an air separation/ priming container. From the carts, which are only simple reservoirs as you said, a CIS system, the ink goes to the air separation/ priming vessel (marked...

And yet. I'm getting close, yea! I'll pass on an electrical issue for now! Today I left the machine on (stand alone). About nine hours, came home from work and ran a sample page. (It's a starfish/ reef picture.) Previously mostly yellow tinted, because the magenta wouldn't make the reds and...

Thanks to the site owner for keeping this site up and active. Big thumbs up! I've been posting to a thread started by feedthestinkykitty http://www.printerknowledge.com/threads/some-hp-02-ink-cartriges-work-some-dont.5151/ I also have a HP 1200 laser that has given me outstanding...

I held the p-head tightly and removed the difficult screw with a right-angle Torx. Put WD40 on it to lube it. Tubing is Tygon from a small engine dept in Lowes. 3/32 in. US$4-5.00 I used a small cap off of a spice jar and soaked the printhead in alcohol, Windex, and Simple Green solution(s)...

I disassembled just about everything, without unlatching any of the flat cables (at all!). I pulled all the screws out of the lid and put the screen and flat cable out the back on a piece of foam. Then got the lid off. Pulled the large machine cover, the side covers need some playing with but...

Thanks for your posts here. I'm sorting out a little used 8250 that I set on the side almost a year ago. Expired ink messages and the "OK away" HP bull-stink didn't work. Dark magenta is the problem cart on mine. I used the firmware release exe from the Ruushian site to get mine to "talk"...