[Info-vax] ?3C NVR WRTERR from my VAXstation 4000/60

[David Goodwin]

In article <v9525k$njc3$1 at dont-email.me>, 
clubley at remove_me.eisner.decus.org-Earth.UFP says...
> 
> On 2024-08-07, David Goodwin <david+usenet at zx.net.nz> wrote:
> > In article <v90ta8$3dtak$1 at dont-email.me>, ldo at nz.invalid says...
> >> 
> >> On Wed, 7 Aug 2024 21:53:32 +1200, David Goodwin wrote:
> >> 
> >> > Now I've got it off the shelf and its sadly no longer working. On power
> >> > up, I just get "?3C NVR WRTERR" on the serial console.
> >> 
> >> ?NVR? = ?Non-Volatile RAM??
> >
> > I assume so, which is why I replaced the DS1287A - the markings on the 
> > old one imply a manufacture date sometime in 1991 so its battery was 
> > sure to be flat.
> >
> > But a brand new one manuactured in 2023 from a reputable source doesn't 
> > seem to have solved the problem.
> 
> Any signs of damaged circuit board traces or similar ?

Aside from being a little dusty it all looks fine.

> After you replace a DS1287A, are there any initialisation steps which
> need to be performed ?

I'd wondered this but I can't find anything documented anywhere.