Paper comes half way out and stops. Show to be a jam and when you open and close the doors it will spit out the paper and try to print again and do the same thing. In order to clear it you have to turn printer off after it spits the paper out. Any ideas would greatly be appreciated.

If you get a paper jam, the Paper Jam indicator light promptsyou to clear the paper path. If the paper has just started to feed from thepaper feeder when the jam occurs, pull the paper straight up out of the paper feeder. Open and close the printer cover toresume printing. If the paper jam occurs inside the printer, remove the paper from the output bin. Turn the printeroff, then on. If this doesn't clear the jam, open the printer cover.Remove the print cartridge and cover it.For additional assistance, please contactLexmark Technical Support

It's been a while since I worked on a 4200. Will it print if you keep the back door open?
If yes, does it jam?
If yes, and it doesn't jam, replace the paper delivery assembly(RM1-0026-040CN)

Solution one: Turn the All-in-One off and on again Follow these steps to turn the product on, and then off again, to reset the print mechanism.

1. Press the Power button ( ) to turn off the product.
2. Wait 15 seconds.
3. Press the Power button ( ) to turn the product on again.
   NOTE: The product might go through a warm-up period of up to two minutes. The product lights might flash and the carriage might move. Wait until the warm-up period is complete before proceeding.
4. Try to print a self-test report. See the steps on how to print a self-test report at the top of this document.

• If these steps resolved the issue , and the self-test report prints , there is no need to continue troubleshooting. Reconnect the USB cable, and then try to print again.
• If the issue persists , continue with the next solution.
• If the self-test report does not print , continue with the next solution.

Solution two: Clear any paper jam Jammed paper can cause the carriage to stall. Follow these steps to clear any jammed paper. Step one: Remove any loose paper Remove any loose paper from the input tray and output tray. CAUTION: Do not remove jammed paper at this stage. Trying to clear a paper jam from the front of the product can damage the print mechanism. Step two: Clear the paper jam from the back of the All-in-One Use the following steps to check for and remove jammed paper from the back of the product.

1. Press the Power button ( ) to turn off the product.
2. Disconnect the USB or Ethernet cable from the back of the product.
3. Disconnect the power cord from the back of the product.
4. Remove the rear door. Push the door latches toward each other, and then pull the door away from the product. Figure 1: Remove the rear door Illustration of removing the rear door
5. Gently pull the paper out of the rollers. CAUTION: If the paper tears when removing it from the rollers, check the rollers for torn pieces of paper that might remain inside the product. If any torn pieces of paper remain inside the product, more paper jams are likely to occur.
6. If you are printing labels, see if any are missing from the label sheet. If any labels are missing, find them inside the product, and then remove them carefully.
7. Reattach the rear door. Gently push the door forward until it snaps into place.

Step three: Clear the paper jam from the front of the product Follow these steps to remove the paper jam from the front of the product.

1. Open the cartridge access door. Figure 2: Open the cartridge access door Illustration of opening the cartridge access door
2. If you find paper jammed in the product that cannot be removed through the rear door, gently remove the paper through the front of the product.
   NOTE: Remove paper from the front of the product as carefully as possible. If any torn pieces of paper remain inside the product, more paper jams are likely to occur, and this could damage the print mechanism.
3. Close the cartridge access door. Figure 3: Close the cartridge access door Illustration of closing the cartridge access door
4. Reconnect the power cord to the back of the product.
5. Press the Power button ( ) to turn on the product.
6. Try to print a self-test report. See the steps on how to print a self-test report at the top of this document.

• If these steps resolved the issue , and the self-test report prints , there is no need to continue troubleshooting. Reconnect the USB cable, and then try to print again.
• If the issue persists , continue with the next solution.
• If the self-test report does not print , continue with the next solution.

Keep in this LINK.

Try the feed tires in the tray first. More than likely the paper is not being picked up and causing jam message. The separation roller also has a hub on it to prevent a second sheet from feeding. Sometimes these start to lock up ,a little oil on the hub sometimes relieves some of the tension.

Hi,

most likly hood is your exit sensor is faulty. The printer work in this way. if it does not print out all the document. it will print again. that is why you kept getting this same issue after a jam open and close door it will print again.

replace the exit sensor it will help.

Try two things:

Fan the paper before placing in the tray.

Raise the humidity in the room to at least 40% to avoid electrostatic sticking of the paper. Store paper in 40% humidity area.

Your printer has a fail safe mechanism that pushs the paper that it's processing out to prevent any other jams during the printing process. Your rollers must have something jamming it's movement during printing. You will need to open the printer through the panels on the back, front, and side to ensure that you see the rollers and remove any paper or debrise blocking hitched on the rollers or in the printer. You may also want to ensure that the holders on the sides of the paper tray where the paper comes in are lined up correctly. Also, make sure not to pack the paper tray to capacity. Only use the tray half full.

Hi,
As i can understand whenever you try to print with rear door closed printed page should come on top from top output roller however paper gets jammed.
Solution:
Try to print a page using rear door open and it should come out from the rear drop down tray it printed page comes out successfully with rear flap open than paper gets jammed at top due to faulty top output roller.
However if the paper gets jammed at fuser with rear door closed than it is issue with fuser in that case you need to get fuser replaced at the same time replace 20 tooth gear next to fuser.

Thanks and Regards
Neeraj Sharma

Check the FUSER, I think your exit sensor is bad.
If you open the rear door, look inside where the paper starts to come out of the printer, you should see a small lever that triggers the PAPER EXIT sensor. It might be hard to see. If it is not broken, you need a new FUSER.

check the door switch