I need help in repairing my Toyota 820 Embroidery Machine

I am receiving a motor lock error on my machine. The fly wheel turns freely and I purchased a new power supply. I wonder if the problem is software and hardware related because I am using the original Pantogram software and have made a number of modification to make the new computers compatible. I bought a second used machine and I am getting the same error message on that machine. Does anyone have a repair manual?