Roland GR-640 User Manual page 22

Accurately Feeding Roll Material
Be sure to perform material feed if it is required. If you start cutting without checking
the material feed, correct cutting results may not be obtained if the material is not fed
correctly. In the worst case, this problem may cause an error or malfunction or damage
to the material.
Materials That Require Feeding
Roll material and long, flat material that is longer than 1.6 m (63 in.)
If the Material Comes Loose
Procedure
Press [MENU] several times to display the screen
shown in the figure.
Press [ ] to display the screen shown in the
figure.
Press the [ ] key, and then the [ ] key.
The screen shown in the figure below is displayed.