HP cp2025 phantom jam

[LPRS]

First, sorry for the long post.

I have a cp2025 that was occasionally not picking paper. I inspected the pick roller and it needed to be replaced, at only 24464 pages. I cleaned the existing roller and it worked w/out any issue for about a week while I waited on the roller to arrive. I replaced the pick roller per the HP directions below:



http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c02680135



When I powered the printer back up it would no longer move media correctly. I can hear the pick roller trying to move paper 3-5 rotations and then it shows a jam tray 2 in the display (13.0000). Occasionally it will push a sheet through, usually when I just hit OK to clear jam and the engine cycles, but not enough to use the printer at all. Since it can move paper through the path I know there is not an obstruction. I decided that I would move on to another cp2025 that needed a pick roller, we have several, and come back to this one later.



The second cp2025 was working just like the first one and just need a new pick roller. I changed the roller using the procedure above and now I have two printers with the exact same issues.



I have tried new firmware, cold reset, swapping new and old rollers back and forth and nothing seems to work. I bypassed the rear door interlock so I could watch the process and noticed the registration or feed roller not turning during the print cycle. The feed/registration roller does turn during an engine cycle, such as when I depress/press the interlock.



I am at a loss, both printers were printing normally but just needed new pick roller but after following the above procedure both are now unusable. I tried to talk to tech support but they didn't seem to want to help being both printers are out of warranty. I have been searching the web with little success.



Any help would be appreciated .



Thanks

[ridered74]

First, sorry for the long post.

I have a cp2025 that was occasionally not picking paper. I inspected the pick roller and it needed to be replaced, at only 24464 pages. I cleaned the existing roller and it worked w/out any issue for about a week while I waited on the roller to arrive. I replaced the pick roller per the HP directions below:



http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c02680135



When I powered the printer back up it would no longer move media correctly. I can hear the pick roller trying to move paper 3-5 rotations and then it shows a jam tray 2 in the display (13.0000). Occasionally it will push a sheet through, usually when I just hit OK to clear jam and the engine cycles, but not enough to use the printer at all. Since it can move paper through the path I know there is not an obstruction. I decided that I would move on to another cp2025 that needed a pick roller, we have several, and come back to this one later.



The second cp2025 was working just like the first one and just need a new pick roller. I changed the roller using the procedure above and now I have two printers with the exact same issues.



I have tried new firmware, cold reset, swapping new and old rollers back and forth and nothing seems to work. I bypassed the rear door interlock so I could watch the process and noticed the registration or feed roller not turning during the print cycle. The feed/registration roller does turn during an engine cycle, such as when I depress/press the interlock.



I am at a loss, both printers were printing normally but just needed new pick roller but after following the above procedure both are now unusable. I tried to talk to tech support but they didn't seem to want to help being both printers are out of warranty. I have been searching the web with little success.



Any help would be appreciated .



Thanks

Does it power up directly to a jam? If so, I've only run into that once and it happened after a tech had done some unknown work on it. He had knocked the spring off of the piece with the red arrow in the picture. You can check yours by opening the back door and pushing on that piece. If doesn't instantly spring back, that's your problem.178

[LPRS]

No it comes up in a ready, but I'll check it just in case.

Thanks

[ridered74]

No it comes up in a ready, but I'll check it just in case.

Thanks

No, if it comes up to ready that won't be your problem. Any chance you didn't get the pickup roller on all the way and instead of turning it is just spinning freely on the shaft? That's about the only thing I can think of.

[LPRS]

Unfortunately it is on the shaft correctly. I worked on it for about 2hrs yesterday trying to figure out the problem. I would just replace the printer but there are 31 of these and I don't want to replace the entire printer every time the rollers wear out.
What I know after working on it yesterday:
The paper is lifted via cam on the same shaft as pick roller. So with every rotation of the pick roller it is moving the paper tray up/down and is only in contact briefly with the paper tray which is why it only moves the paper 3/4" to 1" before stopping
It seems to pull the paper from the tray and then it is pinched between the pick and sep roller. I guess the paper is supposed to be moved up to the registration roller solely by the pick roller
Sep roller is a one way spring clutch and I think it is my problem. I have ordered 3 for the three printers that are having this problem

[Big Al]

I'm not familiar with your printers but there are some bogus parts out there packaged to look like genuine HP parts. Have you
tried a roller from a printer that is working? Just a thought.
Al

[LPRS]

I put the original roller back in, it did work with only intermittent mis picks, and it still wouldn't work on either printer

[ridered74]

I'm not familiar with your printers but there are some bogus parts out there packaged to look like genuine HP parts. Have you
tried a roller from a printer that is working? Just a thought.
Al


I agree with Al. Take a roller from a machine that is working and try it in the jamming machines.

[LPRS]

Well, problem resolved.

Big Al was right and I got some bogus rollers. After going through 6 of the rollers I had on hand I decided to order some more direct from HP. I Put them in following their replacement procedure and voila, both printers working again.

Thanks for all the help and advice.