From: John Woodgate
Subject: Re: Open Source Consumer Products
Date: Mon, 25 Nov 2002 04:14:48 +0000
Organization: JMWA Electronics Consultancy
Reply-To: John Woodgate
NNTP-Posting-Date: Mon, 25 Nov 2002 06:52:49 +0000 (UTC)
X-Newsreader: Turnpike (32) Version 4.01 <5Z8C9wtxbnpWyFnyfFzqmVF739>
I read in sci.electronics.design that Michael A. Terrell
wrote (in <3DE14DFD.firstname.lastname@example.org>) about 'Open
Source Consumer Products', on Sun, 24 Nov 2002:
> 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.
A widely-held view, but compiling a service manual, **that a technician
coming fresh to the product** can use without confusion, is actually a
For component-level diagnosis, a functional circuit description is
necessary, together with tables of the effects of faults in selected
components. These faults may be simply open or short circuits down to
drifts out of tolerance.
Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk
Interested in professional sound reinforcement and distribution? Then go to
PLEASE do NOT copy news posts to me by E-MAIL!