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 Sticky solenoid  is a problems on the paper tray pickup assembly,  The solenoid sometimes get sticky and printer feeds additional sheet and then reports jam.


To verify run paper path test in simplex.  When a jam occurs check if there is a blank sheet of paper somewhere in the printer.  If so then it's sticky solenoid.  Swapping the solenoid will resolve the problem.


This problem applies to the following models:

- LJ 3035

- LJ 4250


Examples on how to swap the Solenoid on a 4250:



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