I have a Ram Parity Error I can't seem to get rid of. I have changed the main CPU board, and the two SRAM modules. The machine will boot up when I push "Reset" and "Delete" at start up. I can then load cnc parameters fine. I turn the machine off then back on. The ram parity error comes back. I only way to have the machine run without the error is when I took out the SRAM module from the Ladder position. This is nice ,but I can't load the PMC parameters. Any help with this is greatly appreciated.