I have a HP 6978,printer carthridge tray does not move
Product: HP Office Jet 6978
Operating System: Microsoft Windows 10 (64-bit)
I want to change the starter ink cartridges. I open the top and cartridge tray does not move, I don't have a cartridge jam message and I can not move the tray manually. I don't have access to change the cartridges and I don't think they are moving for printing.