Inserting a thermal paper roll
Open the printer's cover by pushing the lever on the right side away from you and lifting the cover.
Insert the paper roll so the end feeds from the bottom of the roll, as shown in the image below. While doing so, make sure the paper roll stays tight and doesn't unspool.
Pull the paper out past the cutter at the front of the printer.
Push the cover down to snap it shut.
Print a test receipt.