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GreyGold
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CP2025 "Sticky Solenoid"

LaserJet CP2025dn
Microsoft Windows 10 (64-bit)

My CP2025dn exhibits the classic symptoms of a "sticky solenoid".  After sitting idle for a l-o-n-g time, it will print one or two pages (either from a print command or any test page).  After that, any attempt to print will result in constant recycling of failed attempts to pick.  I have found numerous descriptions of how to clean the pick solenoid to correct the issue, but I have yet to find anything that tells me how to locate and remove the solenoid on my printer model.  It appears to be pretty straightforward on many HP printers, but not on the CP2020 series.  Can anyone provide guidance on how to access my pickup solenoid?  Thanks.

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CP2025 "Sticky Solenoid"

Try to clean paper pickup rubber roller and separator roller, that is the easy job and there is a chance it will fix you feeding issues. If cleaning helps that would be temporary, the next step is to replace rubber parts. The paper pickup rubber can be rotated so that the unused part of is placed on the slippery used part ( the belly of D ).

 

CP2025 paper pickup solenoid is tricky to access, they are not known to get sticky as on some other printers.

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RPHK
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This guy, East2100, has a brilliant solution of using a piece of paper, without having to remove the solenoid. I just tried it today and it worked! However, you have to remove the right cover, the rear-upper cover, the upper-cover, the control panel, and finally the right panel, just to see it. I'm no repairman, I just followed the instructions in the HP2020 Service Manual. Go to Page 136, Right Panel, and it will tell you what other pages to go for step-to-step instructions of all of the above parts.

 

Here's one of East2100's posts about this problem: Where to find the sticky solenoid 

 

And here are my photos that might help someone like me who is not a professional.

First, prepare the paper:

V shape paper.jpg

 

Solenoid location on CP2025.jpg

Solenoid before.jpg

Solenoid w paper insert.jpg

 

RPHK
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CP2025 "Sticky Solenoid"

I forgot to add this link to the Service Manual, which is essential:

 

https://shared.swissparts.ch/Manuals/HP/Color%20Laserjet/HP%20Color%20LaserJet%20CP2020.pdf

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GreyGold
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RPHK - could you re-post your photos?  All I see are four triangles.  Thanks.

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CP2025 "Sticky Solenoid"

That's not paper pickup solenoid.

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GreyGold
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@RPHK - Many thanks for your solution.  Your photos and description were spot-on.  I couldn't follow East2100's description.

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RPHK
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CP2025 "Sticky Solenoid"

Glad to help, but I'm just an amateur. East2100 is a professional, and the paper is his brilliant solution. I just found some photos of his in this thread, for a different model of printer, but shows the solenoid clearly and the paper placement clearly, as the solenoid was removed:

https://h30434.www3.hp.com/t5/LaserJet-Printing/59-C0-Error-on-Laserjet-Pro-400-Color-M451dn/td-p/64...

 

And since one Sticky Solenoid probably means more sticky solenoids on the same printer (the others are facing the same aging foam) here's a link that he always includes that describes the general problem. The trick on each printer model is to find where it is:  http://westhillprinters.blogspot.com/2011/12/sticky-solenoids.html 

 

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RPHK
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CP2025 "Sticky Solenoid"

No, Valsimot, this is not the paper pickup solenoid. However, East2100's solution did solve my problem, which is just as described by the original poster.

 

If my printer has one sticky solenoid, the others are probably also sticky, right? I would appreciate it, if you could tell us how to access those on the CP2025.

 

Many thanks in advance!

GreyGold
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CP2025 "Sticky Solenoid"

I second the comment from @RPHK:  I've searched everywhere  for the locations of the other solenoids on the CP2020 / M451 series, but no success.  It would be really helpful if someone could provide that information.

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