Machine stopped (no screen alarm, just red error lamp) while in rapid movement (backing up in Z for a tool change). I have tried powering down/up. Machine ready lamp lights up, all seems fine. But I cannot home, jog, or rapid. I can set mode switch to handle and I can crank X and Z around. When I switch to MDI, AUTO, or EDIT modes, I get the red error lamp. I can switch back to Handle, Jog, or Home and clear the red lamp with the "Reset" key. Chuck will open/close, turret will index, spindle will not turn on.

I have checked every fuse/relay that I can find, and I have not found a culprit. Any help appreciated. (10TF control)