I have a system 3m model C, I can't seem to clear "NOT READY", machine won't jog. "THND" is on the screen, when I switch selector to "JOG" this doesn't seem to change.

When I hold "RE-MOVE / 2ND LS" switch up, the "NOT READY" goes away, screen switches to coordinates (0 for all axis) - but still no jog movement.

Can anyone advise please? Thanks.

--Erich