13.1 Paper jam open input trays then open and close cover

I first off want to say I figured out how to fix this issue using this Knowledgebase. http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=bpl06726

I was working on a HP Laserjet 4100DTN. Here’ is the steps that HP recommends you take in order to solve the jamming issue.

1. Ensure that paper trays are loaded properly, so that paper can feed from the tray
2. Check the input area for obstructions, such as paper in the path or visible damage to the paper path near Tray 1.

3. Remove the print cartridge and lift the green handle attached to the metal plate underneath to check for paper in the paper path.

   NOTE:
   Try swapping the tray and print cartridge with one from different printer, same model. Determine if issue follows the tray or the print cartridge.

4. Ensure that paper is feeding correctly from the appropriate tray (try using a freshly opened ream of paper).

   1. Inspect the pickup assembly by removing the paper tray in question to look inside the printer.
   2. Locate the rubber roller with a purple, plastic hub (paper feed roller).
   3. Locate the paper pickup assembly that is directly behind the paper feed roller. The paper pickup assembly consists of a shaft with four half-moon shaped rubber and white plastic rollers attached to it.
   4. Rotate the shaft to locate the half-moon rollers and ensure that it turns easily.
   5. Locate the black plastic coupler shaped like a dog bone that is immediately to the right of the shaft .
   6. If either the pickup assembly or the coupler is missing or damaged, the printer will need to be serviced.
5. Do not fan paper to separate, bend the ream into a U shape to break the sheets free from one another.

NOTE:
If the steps listed in this document do not return the printer to a READY state, service may be required. Contact the HP Customer Care Center for more information.

NOTE:

How I ended up solving the issue was taking out the tray that the issue. It turned out the pickup roller OF the drawer was almost off the peg. Sliding the roller back to the right until I heard a click resolved the issue.