During more poking around last week I did find the following:

Strange AC voltage readings at output terminals DO4, DO7 and DO10 had me confused. On my meter the reading looked very smooth when auto ranging.........the outputs were reading -140VDC referenced to L1A. Something screwy with the ECI door board. I ordered another ECI board, same result. I spoke with ECI to make sure I had the correct board, the tech support guy suggested swapping L1A and L2A at the operator. Swapping line and neutral cleared up my output voltage issues but I then I had issues on the input side of things. I have an unused 104 board that I will be installing and adjusting Monday.