January 6, 2014 at 1:35 am #21650
Does the servo motor make any sound, at any point, for example when you launch RoboPaint?
Please make sure that the servo connector is connected to the correct port of the EBB, with the black conductor towards the outside of the EBB. If it is not moving at all, ever, then one thing that you might try is reversing the cable, put the white connector towards the outside of the board. (Your carriage and servo motor were tested and calibrated before they shipped, but it is theoretically possible that it somehow passed testing with the cable backwards.)