Epson WF-7610 error 0x10

Bought a used Epson WF-7610 which according to the seller was in good working condition. After receiving I tested and this error popped up. See lots of "diagnostics" video&on youtube but none has a solution for this error on this model printer.... I did find a small black pin or roller in the box, don&know if it belongs to the printer or just happens to be in the box. edit: It has been fixed by replacing the whole scanner unit. I bought a used scanner unit on Ebay for $30 and replaced it myself. easily done. Saved me a heap load of cash...