Print Unable 32,
I have replaced all toner, and waste toner pack, cleaned the entire unit, found no jams anywhere, HELP
It's funny that the Brother website tells you it's a paper jam. The service manual says it a "Density Sensor Shutter Malfunction". I have a 4040 too, and one day I got that dreaded error as well.
The fix is not difficult, but you need to be a little handy and not afraid to get into it. It involves taking the back area of the machine apart. A phillips screwdriver is all you really need. Small needle nose may come in handy too.
First find the service manual PDF online. Do a search. It's out there. Don't pay anyone for it, it is freely available for download.
The service manual is exceptionally good (never thought you'd hear that on a Brother product, did you?). Go to page 3-21 and you'll see a flow chart telling you what sections you have to look up to disassemble. Start at "paper tray" (page 8-6) and follow the flow all the way to page 8-16. (So to clarify, you'll be reading steps 8.6,8.10,8.14,8.15 and 8.16 only) There are 5 steps. It looks scary, but it's really not bad at all.
Once you get to the little shutter solenoid, remove the screw so the solenoid can be lifted out. You will see a small piece of black foam on the edge of the solenoid and it probably will be all gummy feeling. That is the problem! WHen that little solenoid activates, the shutter hits the gummy foam and stays there. The spring is does not have enough umpf to return the shutter.
Remove that piece of foam altogether and make sure the surface is not sticky. Now take the solenoid spring and pull it out slightly to give it more pressure. Be careful and don't go nuts. You just want the spring to be a little stronger. Put the solenoid back and move the shutter back and force and make sure it doesn't "hang" in the open position. If it does, give it a little more pull on the spring.
Put her all back together again and your problem will be gone! All from a piece of foam half the size of a thumbnail!
Apr 13, 2011 |
Brother HL4040CN Laser Printer