I also ran into this problem and after some back and forth with tech support, I was told to look through the maintenance window which I accessed by pressing Ctrl+Alt+M while on the Objet30 Prime operating system and viewing the window which shows the head temperature and figures for internal sensors. Once there, a tab called “maintenance” showed up right next to the “Options” tab. From there, I selected the option of “Calibration” and was prompted by a screen which displayed the “Requested Voltage” vs “Actual Voltage”. My requested voltage was something like 24 or 25 V while the actual was like 0.16 V.
From my conversation with GoEngineer, they stated that the likely cause of this was “the cable connecting the lotus board to the spartan board”. Apparently this controls the XY motors and supplies the voltage to the print heads. The explanation I was given to why this cord failed is that over time as the x and y axises move back and forth, the cord deteriorates over time and eventually fails. I am having someone come in to service my printer and I was told its quite the ordeal to fix. To be specific, I was told it would require taking off multiple covers, the entire top and multiple other components while replacing fuses and running a new cord in a specific orientation.
Without taking my printer apart, does anyone know where I can find any illustrations/schematics showing where exactly these boards and cord are located? That would be super helpful for me to understand this problem.