Info on printer says "Rear Cover, paper is jammed". The window on the screen says "Paper is jammed in the transport unit. Raise the paper support, detach the rear cover, and then remove the jammed paper". How do I detach the rear cover?
In order to solve your problem regarding the paper jam, you can see a tutorial on the following website. The tutorial was made by the manufacturer and contains pictures that can help you understand a lot better the steps that you need to follow.