I have a Daewoo promotion ac servo drive on our Puma 240msb. The turret will not index and shows it is at tool 00 when it is actually setting on tool 5. if you push alarm reset or tool index button, it flashes between tool 00 and tool 12. The servo drive has an error ALP-En on the display. Does anyone know where I can download a service manual for this drive? Or have experience with this problem.