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From: Simon Clubley <clubley@remove_me.eisner.decus.org-Earth.UFP>
Newsgroups: comp.os.vms
Subject: Re: ?3C NVR WRTERR from my VAXstation 4000/60
Date: Fri, 9 Aug 2024 12:30:44 -0000 (UTC)
Organization: A noiseless patient Spider
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Message-ID: <v9525k$njc3$1@dont-email.me>
References: <MPG.411e0b487a3639b2989746@news.zx.net.nz> <v90ta8$3dtak$1@dont-email.me> <MPG.411ec14d977345e598974c@news.zx.net.nz>
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On 2024-08-07, David Goodwin <david+usenet@zx.net.nz> wrote:
> In article <v90ta8$3dtak$1@dont-email.me>, ldo@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 ?

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

Simon.

-- 
Simon Clubley, clubley@remove_me.eisner.decus.org-Earth.UFP
Walking destinations on a map are further away than they appear.