I would think this is an unusual problem-
Everything seems to be working beautifully, getting excellent, precise detail on carving. Cutting into a 4.5ft (1" thick, 11" wide) oak board with a few projects on it in series. Excellent results on first carve, halfway thru second: the X- and Y- and Z-axes stopped moving. The bit still spins but just sits at the end of the last pass.
Observations: no error messages-OK, spinning stops and truck is raised when cover opened-OK, truck can be moved on Y-axis by hand with same resistance to motion as always and belt+ rollers all appear fine and belt tension unchanged(snug)-OK, close cover and hit ENTER to resume, motor starts and Y-axis re-homes and Z-axis returns to last point cut (Y- and Z-axes seem to work perfectly with no binding, stutter, slop observed at all)-OK. X-axis operation cannot be verified at this time.
At this point, truck remains motionless while bit is spinning smoothly, with no X-axis movent.
Cutting and servo motors, truck, and cable all at lower side of normal operating temp range. All cuts 1/8" or less deep. Above STOP/RESTART procedure repeated several times- no change. Additional note- when truck moved laterally a few inches by hand, the truck returns to last cut point automatically- when moved to far end of pass length, it will then stay at that end instead.
Memory card wiped and re-formatted prior to project upload, all carvings saved as a Group in Designer, uploaded as one combined project.
As of this writing, board is still in place, machine ON, card inserted, project loaded.
That should give you enough to go on to start, any ideas, anyone?