LaserJet 4000TN With "Helicopter Sounds"

[cubfanhere]

I have a Laserjet 4000TN that is making some weird noises when it prints. While the paper is being pulled through the paper path it sounds like helicopter blades spinning, almost like it is making a banging noise, but not a hard banging noise, like something is thumping repeatedly inside the printer. The page prints out fine, but the noise is always there when it prints. The noise goes away when the engine stops and the print is finished. It only happens when it is actually sucking the paper through the paper path. Any ideas as to what is causing this problem?

[jtrotier]

The sounds that you describe could be the fuser drive gear jumping teeth. Pull the fuser assembly and rotate by hand. It should turn freely with no jumping or hesitation. Assuming the fuser seems to be ok check the swing plate gears that drive the fuser, top left side of fuser. This gear getting a broken tooth is common. Hope this helps - Go Cubbies