I have a question that I’m hoping you can answer. We have a emcoturn 342, and upon machine power-up it alarms out code 6011. does this for about 2 or 3 minutes, and then will quit and run ok. Could this be a power supply issue from the boards? Or another issue?

I changed the power supply (BUC2) and both x and z (BUS 21) boards and no fix. Still alarms 6011 and 7000 (which I know 6011 is drives power supply fault and 7000 is aux off) and I have to keep turning the aux on every few seconds for a few mins upon power up. Little lost at this point, any ideas?