The control is a Fanuc 21i-TB. After the machine was started up, after sitting for the weekend, it threw alarm 972, and 910. Ram parity, battery is good, checked with power on. There is a gantry/machine switch that needs to be in gantry position to load parameters. It's not loading, I/O boards have been changed, memory backed up, erased, reloaded. Nothing on I/O, everything blank. Ideas?