HP Laserjet 2420 sees jammed papers, but they are not.

I have a HP Laserjet 2420 printer, I use it with a LAN for work reasons. All the computers using this printer are Apple computer with different version of MacOS X (from 10.3 to 10.6). The printer started stopping randomly and quite often as like as sheets of paper are jammed, but they are not; clicking on the "v" button on the printer is enough to resume work. The printer is apparently fine, so I do not know how to solve the problem.
Thanks

Hi Marco82313, 
This is a commercial line product. For the best answer to your questions you will need to repost your question to the following links. 
http://h30499.www3.hp.com/t5/Business-Support-Forums/ct-p/business-support 
http://h30499.www3.hp.com/t5/Printers-LaserJet/bd-p/bsc-413 
I am an HP employee.
Say Thanks by clicking the Kudos Star in the post that helped you.
Please mark the post that solves your problem as "Accepted Solution"

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