>Is there anyone here with experience working on a PDP-11/24 in a BA11-A
>box?? I am trying to more mine from a broken BA11-L to a working BA11-A
>and I need some help with where one of the cables from the control panel
>goes.
>
>Anyone??
>
>bill
One goes to the CPU backplane and the other goes to the power supply. The
power supply connector is kind of hidden. You will need to slide the supply
out about 1.5 inches in order to see it.
I hope you are using a BA11-A that has the H7140-AA (IIRC) in it. IIRC the
H7140-CA is only for expansion chassis. IIRC the -CA has only +5 and
+/-15v. The -AA has +5, -5, +/-12v, +/- 15
Also be careful using backplanes from expansion boxes in the CPU box of the
11/24. They often have some jumpers on the supply lines ( soldered where
the supply wires meet the backplane) that short the 2 sets of +/- supplies.
A while back I scanned some stuff that may help you. Poke around
ftp://zane.brouhaha.com
I am sorry but most of the originals have been destroyed by a fire 2 months
ago. Not to mention a LOT of PDP11 equipment at the same time.
Dan
Received on Sat Apr 14 2001 - 13:09:47 BST