We just moved our AS/400 from one location to another. At the first location, it was hooked up to 120v power with circular, twist lock plugs. At the new location, we have smaller UPS's that we want to plug it into, so we just used normal power cords. The power supplies show that they get power, and the display comes up on the LCD with a flashing power light, which indicates that it has power, but pushing the power button does nothing - the thing will not even attempt to boot. I think we get an error code that indicates it doesn't like the power cords, which I don't understand. I even tried taking one of the old power cords, removing the twist lock male end, and putting a normal end on it, but it does the same thing.
What is special about the power cords/plugs on this thing? Any ideas why it won't start?