I just acquired a Pratt Whitney lathe with a 6T control on it. When I power it up the Machine alarm is lit on the operators panel. The operating manual says this is a problem on the machine side. I can use the jog button and the digital readout indicates motion while there is physically nothing happening. I am not new to working on CNC stuff but a total noob on a 6T. Any suggestions of what to check or things to do. I have wiring diagrams but no maintenance manual. Any suggestions appreciated.