A&D 191 - Manual (Page 8)

10. Push the back of the printer cover down and into
place.
11. Press the front of the printer cover down to lock in
place.
12. Put the paper spindle into the paper roll as shown
below, and place the roll with the spindle onto the
snaps near the back of the printer. Turn the paper roll
to take up any slack in the paper feeding to the
printer. Make sure the roll of paper turns freely. If it
does not turn freely, the paper will jam and will
possibly damage the printer mechanism.
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