Roland GR-540 User Manual page 28

Place the right edge of the roll material over the grit roller (on the right
edge).
Slide the roll material to place its left edge over the grit roller.
At this point, check that the right edge of the roll material remains over the grit roller on the right
edge.
Straighten the roll material.
Align the right edge of the roll material so that it is parallel to the gradations of the rulers (in two
locations: one on the top and one on the bottom).
1: Grit roller
2: Right edge of the roll material
1: Grit roller
2: Left edge of the roll material