We use the spongy tip of a swabbit, I'd take a photo for the OP, but our Roland is an XR640 - not sure if it would be in the same place?Can you shove something into the sensor to trip it? That's what we did on our Rolands.............so we could open it without it pausing the print.
Paperclip worked well if I recall correctly.
Same here.our Roland is an XR640 - not sure if it would be in the same place?