I have big problems with the machine Heidelberg GTO 52s from 1993. She is wearing a CP Tronik.
I have a problem with starting the machine. At CP Tronik reports no errors until the machine tries to start then behaves as if the engine does not have the strength to start and reaches a speed of 3,000 sheets per hour, but remain at a speed of approximately 500 prints per hour. Then in the service mode to test DYN 2 report an error MOT 7FDF.

It would be very appreciative if someone said to me what could be the cause.

Thank you in advance.