Roland XC-540 blade not cutting

I'm sure you checked to make sure the blade holder is pushed all the way down...? I have had the situation where the blade/carriage would go through the motions of cutting but not lower the blade to the material. That required a technician to fix, so I can't really help if that's the case. Just saying that's a possibility.

 

Like Julie said, Make sure the blade holder is all the way down to the flange and the screw is snugged up tight (don't over tighten it). If it still doesn't come down, try turning off the printer and unplugging it for a while. While it's off, manually press the blade holder down and make sure that it moves freely all the way down.
As for alignment issues, once you get it to where it will cut properly perform the print/cut alignment and crop cut alignment from the menu. Current settings don't mean a thing without seeing the test print/cut. And that won't mean a thing till you can cut properly. For 3m material I would have the force somewhere around 75 - 100, speed at 30 and offset at .250.

If this doesn't work, then you may need a new cut carriage cable, board or cut head.

 

Glad to help! I only thought to mention that because I've often overlooked such minor things myself!

 

Don't feel too bad. Probably every 3rd or 4th install that I do, I'll get distracted and forget to put the knifeholder in at all till after I spend a couple of minutes looking for the test cut to weed it out.