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From: "Michael A. Terrell"
Subject: Re: Open Source Consumer Products
Date: Sun, 24 Nov 2002 17:09:01 -0500
Organization: Have you seen my bench? No, really! Where is it?
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Theo Markettos wrote:
> Alex Pavloff wrote:
> > On Tue, 19 Nov 2002 21:47:55 +0100, "Geraldo S."
> > wrote:
> > Some practical problems:
> >>How about an Open Source PC?
> > What does this get you? So you have the necessary things to produce a
> > modern umpteen-layer motherboard. You're going to get this fabbed...
> > where exactly? And for how much?
> One thing I would encourage is opening up of schematics. Now the web is
> around, it's minimal cost to put the schematics of equipment on a website -
> it's not like anyone has to put extra effort into drawing them as might be
> said for service manuals.
> What's the implications of this? Well, I miss the days when the schematic
> for equipment was stuck on the inside of the case, which makes servicing so
> much easier. For example, the computer I'm typing this on (an Acorn Risc
> PC, made in the 1990s) has available a technical manual with full
> schematics. This means it's much easier to service it. If a fault happens to
> be in one of the ASICs on the board, so be it, but more often than not
> faults occur in the generic ICs or discrete components which can be fixed.
> This could be done through the corner electronics repair shop, rather than
> having to send the unit back to the manufacturer.
> It's not like a manufacturer is giving away too many secrets since the
> design will often include ASICs which aren't very easy to copy. One
> downside as far as the manufacturer is concerned is that more reliable or
> serviceable equipment means consumers are less likely to throw it away and
> buy new - but I'd hope new taxes on electronics waste would help this
> Theo Markettos firstname.lastname@example.org
> Liphook, Hampshire, UK email@example.com
A decent service manual can be cut and pasted from test procedures
used at the factory, as well as the full bill of materials can be cut
and pasted from the individual BOMs for each board / module / assembly.
Everything needed to create a manual already exists, and should only
take a couple hours work from a secretary to put the material together.
Michael A. Terrell
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