First the easy question ... must be FAQ by now!
Did you check the wire CA1-CB1 for the slots 6-7-8-9 ?
It *must* be present. The simplest check is replace all G727s and
install G7273's in position C-D in slots 6-7-8-9.
As long as the RUN light stays on after power up, you have a bus hung.
- Henk.
________________________________
Van: cctalk-bounces at
classiccmp.org namens Wolfe, Julian
Verzonden: wo 07-06-2006 22:40
Aan: 'General Discussion: On-Topic and Off-Topic Posts'
Onderwerp: 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
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