Hp Laserjet Enterprise M506 RM2-7941 power supply replacement

RM2-7941 M501 M506 Printer power supply

[@EurekaRecycler]

Hi, Our hp M501 will not read the paper tray but we always have paper! Why does it show this add paper error? Thanks

[@tuhinreza6175]

thank ,But something missing showing video

[@Abrknowledgefacts]

Stop music

[@theknowledge31]

What is the solution to this message?
error 81.09.00
printer model hp m507