Problem started with the display would not advance. Program running position display or any of the display buttons would not function until program stop command.
LX2 was sent to Yaskawa for repair. It came back with the same problem. Sent it back, it returned with no crt display. Sent it back, it returned with the position display at every .328 of motion the display will jump .328 positive, continue to move axis same direction and it will jump .328 negative. Yaskawa cannot see the problem at there test and repair department. But they did program the control new eproms. The axes do not physically jump, and it is X and Z which act the same. The problem is present with pulse handle, manual jog buttons and in MDI. Does anyone have an SL1 that I could send boards to, in order to isolate the problem? Any address would be appreciated.

Thanks Rick