Dell s2500 printer - multipurpose feeder not taking paper - never been used

Every time there is paper jam, the printer knows the job is not completed and hence tries to re-print after the paper is removed and cover is shut.

Clear the print job from computer.
Power off the printer and Clear the paper jam (if any)
I would try to use different tray. The paper pickup roller in one path may be worn out.
eg Sheet feeder or multipurpose tray.
Load paper in new tray
Set the application to use new tray

Ensure you sue the right thickness (gsm) of the paper. Quality of paper is crucial. Too thin; too thick can affect functioning.

1. Push the lower release latch. The multipurpose feeder door drops open.
   
2. Pull out the metal bar in the recessed area on the multipurpose feeder, far enough to accommodate the paper you will be using.
   
3. Slide the paper width guide to the far right.
   
4. Prepare the print material for loading:
   
   
   
   
   
   • Flex paper or fan envelopes back and forth. Do not fold or crease the paper. Straighten the edges on a level surface.
     
   • Hold transparencies by the edges and avoid touching the print side.
     
   • Fan the stack of transparencies to prevent jams.
     
   • Be careful not to scratch or leave fingerprints on the transparencies.
   
   
5. Use the stack height limiter as a guide for stack height when loading print materials.
   
6. Load one type of print material in the multipurpose feeder. Do not mix types.
   
7. Slide the paper width guide over until it fits snugly against the side of the print material.

If you need further assistance please contact Lexmark Technical Support.

Verify the Paper Type Matches the Type Set in the Printer´s Operator Panel

To verify the paper type matches the type set in the printer's operator panel, perform the following steps:

1. Press the MENU button.
   
   
2. Press the down arrow until Tray Settings appears and press the button.
   
   
3. Press the down arrow until Paper Type appears and press the button.
   
   
4. Press the down arrow until the specific paper tray (Tray 1, Tray 2, or Multipurpose Feeder) appears and press the button.
   
   
5. Press the down arrow to select the specific paper type, as shown in Table 1, and press the button.
   
   
6. Press the MENU button.

Print from the Multipurpose Feeder (MPF)

To print from the Multipurpose Feeder (MPF), perform the following steps:

1. Click the Start button, point to Programs, point to Accessories, and click Notepad.
   
   
2. Type the word test.
   
   
3. Click File and then click Print.
   
   
4. In the Print window, verify that the Dell 3000cn / Dell 3010cn / Dell 3100cn printer is selected in the Select Printer dialog box.
   
   
5. Click the Preferences button.
   
   
6. In the Printing Preferences window, click the Paper Tray tab.
   
   
7. Click the Paper Source drop-down and select MPF.
   
   
8. Click OK.
   
   
9. Click Print.

I’m happy to assist further over the phone at https://www.6ya.com/expert/joe_8b8c2cd6ce148309

This is telling you to load Letter sized paper into the multipurpose feeder. Take the paper that is in the tray out and place in the correct Letter sized (8.5"x11") paper into the tray

That means whatever you are trying to print is set to feed from the MP tray or Multipurpose Tray. The tray that folds out that is used to feed thicker paper or envelopes in. Just check your print setup screen and tell it to feed from the lower tray or tray1. If that is what you were trying to do.

Pull the paper tray out and check if the paper end sensor is out of bracket or broken.When you remove the paper tray and look inside,you should be able to see the sensor lever that can be moved up by finger.It moved up by paper stock when you insert the tray.This is how paper detection mechanism works on majority of the printers.

Go into the paper menu and set the multipurpose feeder paper size to letter. It will work if the paper size is set correctly for the MPF.

Using the printer panel; you need to change tray paper size from a4 to letter or the size you are using to print on.

1. Press the MENU button.
   
   
2. Press the down arrow until Tray Settings appears and press the button.
   
   
3. Press the down arrow until Paper Size appears and press the button.
   
   
4. Press the down arrow until the specific paper tray (Tray 1, Tray 2, or Multipurpose Feeder) appears and press the button.
   
   
5. Press the down arrow to select the specific paper size, and press the button.
   
   
6. Press the MENU button.

An astrick will appear to the right of the size paper that the printer currently has selected.

what page is this in the user guide?

I had the same problem, my solution was:

1) Go into the Print dialog window, select your 5100cn printer and click the "Properties" button next to it.
2) Select the second tab, labeled "Paper Tray".
3) Select "MPF" from the "Paper Source" drop-down list.
4) Click the "MPF Settings" button and select "Envelope".

That should allow your program to print to MPF for envelopes. This needs to be done in your software, setting it on the printer's control panel didn't work for me.