PDP-11/10 repair started

[js at cimmeri.com]

On 10/5/2015 10:24 AM, Henk Gooijen wrote:
>
> =========
> Sorry for the delayed answer, I don't 
> have email available at work -:/
>
> I have one M930 in slot 3 position 
> A-B, because that is the termination
> for the processor. I am pretty sure 
> (not 100%) that I also have an M930
> in slot 9 position A-B. To be 
> complete, this is the current state.
> slot 1 A-F : M7260
> slot 2 A-F : M7261
> slot 3 A-B : M930   C-D : G7273
> slot 4 A-B : M9970  C-D : G7273
> slot 5 C-D : G7273
> slot 6 empty
> slot 7 empty
> slot 8 empty
> slot 9 A-B : M930
>
> Slot 6-7-8-9 is for core memory, 
> respectively G235, H217D, G114, M8293.
> The documentation says that a G727 
> should go in slot 3-4-5 position D.
> I hate those "knuckle-busters". Plus, 
> I am lazy to check NPR continuity
> on the backplane, so I installed 
> G7273s instead of G727s. Always good.
>
> I totally forgot that the GT40 is 
> based on the 11/05. Great tip in case
> it turns out that I have a "different" 
> CPU module! You never know ...


Henk, I'm confused by your slot 
arrangement, but maybe my 11/05 is 
different than yours.

My module utilization is as follows, and 
is an 8k backplane (the 16k backplane is 
also different):

slot 9 A-F : M7260
slot 8 A-F : M7261
slot 7 A-F : G110
Slot 6 A-F :G231
Slot 5 AB : M930   C-F : H214
Slot 4 AB : blank    C-F G727 in D4.
Slot 3 AB : M930   C-F G727 in D3
Slot 2 AB: KM11 Maint  C-F G727 in D2
Slot 1 AB: DF11 Comm  C-F G727 in D1

--------John