a new BBS...
Tony Duell
ard at p850ug1.demon.co.uk
Sun Sep 21 17:12:30 CDT 2008
>
> >> Many thanks to Tony for providing the information I needed to chase down
> >> the wiring error I had in the machine.
> >
> > Don't keep me in suspense, what was the problem?
> >
> > -tony
>
> It's what I originally suspected. I had the CD wire going to the wrong
> pin on the card end of the wiring harness. It was going to pin 12 when it
> should've been going to pin 15.
Right...
>
> Changing the pinout while everything was installed was a challenge,
When I was working on the Z90, I found it helpful to rememebr that it was
a Z19 with the processor board added (making n H88) and then the floppy
disk system added after that. And that it was best to remove things in
the reverse order. Take the floppy drive out first, then the add-on
boards, then the CPU board and finally the Z19 board, etc.
> especially while simultaneously trying to avoid touching the yoke on the
> CRT neck. :)
I assume you were doing this with the machine turned off. In whcih case
what's the problem with the yoke? It's not a colour CRT so there's no
real alignment problem if you do slightly move it. There's no stored high
voltage on the yoke.
-tony
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