Do this step only for Type 4: vector drives.
Remove cable 33-4049A. This cable is connected between J1 on the vector drive and P11 on the I/O PCB.
Note: For machines made before January 2000, the cable is connected to P18.
Remove cable 33-0969A. This cable is connected between the vector drive and the transformer.
Connect CABLE 970 [C] between J1  on the vector drive and P11 .
Note: For machines made before January 2000, connect the cable to P18.
Connect CABLE 77/78/79 [B] between the power-distributor block  for the transformer and the vector drive terminals 4, 5, and 6 .