Problem with HP DeskJet 855c Ptr

90% of the problems with ink jet printers picking up multiple sheets can be resolved with 70% rubbing alcohol. Take a q-tip or a cotton swab and clean those rollers.

There's also roller renewal bottles that you can purchase at Fry's Electronics or other computer stores and those work well too.

There is no service manual availible for this printer unless you work in a repair shop in corvalis oregon for hp I am certified on these printers and I cant get a service manual and I have tried hard to get one. I think that the printers price pointwasnt high enough for hp to give warranty reimbersment on them when they broke so they decided that they would facilitate all waranties and repair centraly But they will sell you parts if you can find and guess the right part number. and they will let you replace a couple of parts. there is a rumor that someone at hp started years ago that there was a ten thousnd dollar alighnment tool that needed to be used on some repairs but i think that is bs. I cant find anything inside that couldnt be alighned with a jig or feeler guage. This sounds like a logic problem or a driver problem if you are printing from a computer when it does this disconnect printer and try a self test page. you can run one by holding the power button and pressing the form feed button four or five times and letting go of the buttons simultainiously on the last press of the form feed button if it works good then try reloading the driver then try a new cable. also dont use alcohol to clean rollers ever even synthetic rolers contain a oil that keeps the rubber supple and alcohol will dry this oil out gradually just like it does to your hands you are better off with soap and water or a rubber rejuvinator like inx rubber roler cleaner or stoner rubber roller cleaner alcohol will work fine for cleaning the encoder strip or the kick mechinism or even the print heads and carridge assembly also dont use it on the coper bushings on the carrige those are called oil permiated bushings and it will dry those out too. there is also a seperator pad that provides friction to seperate pages that may be dirty.
This is probably more than you wanted to know about these. good luck

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