AS/400 Expansion Unit

AS400 9406-800 with and 7116 Expanision unit System attention error

I got an AS400 9406-800 with and 7116 Expanision unit. I was able to get the AS400 up and running without the expansion unit. I can't get the expansion to power up, (Just makes a very small clicking sound, with no panel lights on). In the process I changed the IPL setting under the 07 option from...