My continuing 11/34 confusion

Alright, so, I finally was able to get good readings at the backplane as far as votages go. My AC voltage is exactly 28 volts going into all units requesting. The -15v line is fine, it must just be the bulb that's burnt out on the regulator. So, as far as I can tell, my power supply is working just as it should. So now I move up to the backplane.I plugged in the memory and a DL11-W and put a tester on the RS232 lines - I get nothing coming from the DL11-W. The front panel reads all zeros when powered on, the Run light and DC lights are on. Here is my current backplane config: 1 M8266-----M8266-------M8266-------M8266-------M8266-------M8266 2 M8265-----M8265-------M8265-------M8265-------M8265-------M8265 3 M7891-----M7891-------M7891-------M7891-------M7891-------M7891 4 M9301-----M9301 M7859-------M7859-------M7859-------M7859 5 EMPTY EMPTY M7856-------M7856-------M7856-------M7856 6 EMPTY EMPTY EMPTY EMPTY G727 EMPTY 7 EMPTY EMPTY EMPTY EMPTY G727 EMPTY 8 EMPTY EMPTY EMPTY EMPTY G727 EMPTY 9 M9302-----M9302 EMPTY EMPTY G727 EMPTY Can anyone make sense of this? Thanks Julian