Roland GR-540 User Manual page 146

Step 5: Load the Printed Material
Procedure
Check the origin for cutting of the printed material.
Turn on the cutting machine.
Wait for the initial operation to finish.
Set the origin for cutting to the lower-left corner of the material, and
then load the material in the machine.
If the material is loaded in the wrong direction, the machine will not be able to read
the crop marks.