Roland GR-540 User Manual page 358

Place the left and right pinch rollers over the grit rollers on both edges of
the material.
Position the pinch rollers on the edges so that each one is 25 mm or more inside of the respective left
or right edge of the material.
*: 25 mm or more
The middle pinch rollers are not used with A4-size material. However, when you are using these rollers to
load material, place them over their corresponding grit rollers.
Select [PIECE] for the material type.
Using Various Types of Materials
Press [ENTER].
The pinch rolls lower and the carriage and material move.
When the movement is finished, the cuttable width and length are displayed.