Most electrical "appliances" have a fuse. Honestly, you will have to read your manual to find out, and how to service it if necessary.
But, did you check the most obvious stuff first? Is the outlet that it is plugged into live? Plug something else into it to make sure it still works. Is the printer on a power bar? Did the breaker trip? Is there an off switch on the bower bar?
Lastly, the machine could have died. Nothing last forever.