Roland GR-540 User Manual page 305

Press [ ].
Press [ ] or [ ] to display the screen shown in the figure.
This setting will be enabled the next time the pinch rollers are lowered.
Press [ENTER].
Press [MENU] to return to the top screen.
Reducing the Force of the Middle Pinch Rollers
When using a wide sheet for which it is useful to use the middle pinch rollers in order to prevent the material
from coming loose during cutting but is also easily marked by rollers, reduce the force with which the pinch
rollers press down on the material.
Procedure
Make sure the material is loaded in the machine.