Paper jams immediately when fed by either the tray or manually.

This is essentially a paper size mismatch which causes a paper jam. Technically you submitted a print job for a paper size that did not match the paper which was fed into the printer. Example, your document is legal size but the printer pulled a letter-size paper. As it passes through internal sensors along the paper feed path, the paper size doesn't match the document size (created on the PC) and so the printer stops with the paper in its path posting the error and causing you to have to remove the paper from the jam area. The resolution is either provide the correct size paper based on the document settings in the PC application (may need to be fed in the printer's manual paper tray) or change the document size within the PC application to match the size of the paper being fed into the printer. (Paper size can also be modified in the printer settings on the PC.)

Jams in the Document Tray

When a document jams or misfeeds in the Document Tray, <OPEN COVER> and <SEE FIG. 1> <!!CHECK!! 5100> are displayed on the LCD.

Note
You do not need to unplug the fax when clearing document jams.

* When <OPEN COVER> and <SEE FIG. 1> are displayed alternatively

1. Press [Stop].

Important
Do not pull out the jammed paper manually at this point.

2. Hold down [Start/Copy] for a few seconds.

* The document will be fed out automatically.

* If the document is not fed out, gently pull the document out of the fax.

* When <!!CHECK!! 5100> is displayed

1. Check if any paper is jammed.
If jammed, make sure to take out all the jammed paper.

2. After taking out jammed paper, turn the fax off, then turn it back on with [ON/OFF].
Jams in the Multi-Purpose Tray

If paper jams in the Multi-Purpose Tray, <CLEAR PAPER JAM> is displayed on the LCD.

1. Gently pull any jammed paper out of the fax as shown, then press [Stop].

* Pull it gently in either direction.

* If you cannot pull the paper out, continue with the steps below.

2. Open the Printer Cover.

3. Gently remove the jammed paper inside the fax.

4. Press [Stop].
The fax returns to standby mode.

If your printer has a paper tray, do not fill the tray. Overfilling the paper tray is frequently causes paper jams. Many printers have sliding mechanisms that allow different types and sizes of paper to be fed into the printer. If the slider is not correctly positioned, it can cause a paper jam.

A paper jam as you describe could be caused by the following:

The fuser is defective and causing the jam.
The tray has a problem and it is not picking up the paper properly which causes a timing problem that results in a jam.
A bad sensor is stopping the printer from being able to tell if the right size paper is being fed through the printer.

Try printing from the manual tray to eliminate a problem with the standard paper tray. If it still jams it is very possible that your fuser has an issue and will require replacement. Are there any errors in the error log?

Hello :-)
Please open the paper supply tray you wish to use. At the very front of the tray, to the right, you will see a blue dial. This dial is used to tell the copier what size paper it can expect to be fed. You can put many sizes of paper in the tray, but the blue dial MUST match the size that truly is in the tray. If ,for example, the blue dial is set at "LETTER" but the paper in the tray is 11x17, the copier will look at the dial setting and expect the paper to have passed its paper path sensors in a certain amount of time. So if the dial says 8.5x11 and the actual sheet of paper fed just keeps on moving by the sensors (11x17) the copier freaks and treats it as a paper jam assuming it has fed multiple sheets. Happy New Year to you and yours! :-)

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.

Is the paper tray set to the proper size? and are the tray guides snug against the paper?

Paper feed rollers in tray need replacement.