I do remember when Schindler switched from the 321A to the 330A, they moved the power supply off of the board. You used to have the three phase power going into the lower left on the CRIPHNA and being rectified and reduced right there. While the circuitry more or less remained when they altered the print architecture to the newer design, they began using a separate Siemens power supply and just plugging the power supply with 24 VDC. As the 400A is based off of the upgraded architecture, it most likely has this 'off-site' 24VDC supply. I think, however, the 5 VDC supply is still generated 'on-site'. Unfortunately, if the 24 VDC supply checks out, you will still need a new ASILOG. I would also simply reseat the GCIO360 board and all connectors prior to changing anything out.
As always, good luck.
