Hello!
I am using an old Roland PNC 1100 cutter, that still works perfectly, except a "bug" which appeared only recently. Some lines are not continuously cut out, but they are interrupted, the length of this "break" being 1/2 to 1 inch. This happens only along the right side of the vinyl sheet, at a distance of 1...2 inches from the movable roller. Due to an unknown reason, the knife is raised within this part of the curve, instead of remaining in the "down" position. In never happens in the rest of the sheet area.
Note that the issue has a random character, it occurs accidentally, in an unpredictable way. The same situation when using Flexi or Signtools.
Any explanation or possible origin ?