Compuprint 3056 Operator's Manual page 21

2. Keep pressing the LF/FF button and turn on the printer until the printer beeps
several times. Then the power indicator and the paper empty indicator will
lit.
3. As shown in the illustration, move the left edge guide to the left position
indicator, then move the right edge guide until the distance between left and
right edge guides fit to the width of paper.
Use paper that is at least 360 mm (14 inches) wide, otherwise
the print head will print directly on the platen (black glue
roller).
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