I think that you probably meant to say "
TI-5130 II." The two last characters are capital i's-not 1's.
The ribbed edges along the top of the paper roll cover are for gripping the lid with a thumb & sliding the cover back-in the direction of the arrow that is also featured on the cover.
Insert a new roll in the space provided-between the clips. Power on this adding machine by plugging the electrical cord into a standard power outlet. Feed paper through the jagged tear-off edges of the paper roll's path by pressing the dark gray paper advance key at the top to the right of the LCD display. Slide the cover back on.
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