We replace all HP ,Canon,Brother ,Lexmark formatter board or a DC Controller board on either the HP LJ4240, LJ4250 or LJ4350 LaserJet printers, Call info: show contact info
there is a procedure that should be followed to ensure proper operation; this is also true for the HP P4014, P4015 and P4515 series. HP has embedded NVRAM and Firmware on both the formatter and the DC controller, and these two boards communicate with each other. If a we know this it can cause them some serious problems. What's more, the fix is not as straight forward as one would expect. Following these steps can save a lot of time and headaches, not to mention keep you happy.
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