This issue has started to come back up again. We replaced the PS1 and it ran fine for one month. Started right back again. I am confident that it is a PS issue as if we adjust the voltage a little low, this code pops up on a constant basis. We can adjust it higher (12.6 and 5.6) and it will run for a few days and comes back. The only thing PS1 feeds is the DSP. The input voltage feeds all the other Power supplies. So I do not think it is a noise issue on the input side. We did put a surge protector on just the PS1 and that did not help. Unless someone has another idea, I believe we are going to send the DSP off for repair.