Once you have that sorted set up pins 2 and 3 for the x axis motor. Put your meter leads between pins 3 and the one to the left of it 5V/G and see if you get a reading. Try jogging the x axis in both directions with your meter in place. You should see your reading change when you change directions. Look at your x axis dros in machs run screen and see if it counts up and down as you jog in different directions (right and left arrow keys jog the x axis).
Brett