One of our laserJet 4050 printers has make making this excruciating noise when it prints. It still prints fine though. I couldn't figure out what was wrong with it so I tried a maintenance kit which included new rolers and new fuser unit, and i also replaced the toner. No luck.
After a few weeks we started to get error 59.00.00 which i found out was a problem with the main motor or the DC. I would like to replace either or both, and I'm looking for advice as to whether I should attempt this or not, and id so, how i can get the parts that i need. Shopping for laserjet parts on the net is somewhat scary as I'm sure more than a few of the companies are scams somehow.
I'd also like an exploded diagram of the laserjet 4050 that shows the main motor.
Normally I would do this kind of research myself, but I am in meeting all day and away next week. I would like to order the parts or call for service by the end of the day.