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From: george@wombat.bungi.COM (George Scolaro)
Newsgroups: comp.sys.nsc.32k
Subject: Re: PC532 - Drilling Extra Mounting Holes, + PCB Layer Schematics
Message-ID: <9105102026.AA28684@wombat.bungi.COM>
Date: 11 May 91 03:26:25 GMT
Sender: news@daver.bungi.com
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Approved: news@daver.bungi.com

[In the message entitled "PC532 - Drilling Extra Mounting Holes, + PCB Layer Schematics" on May 10, 22:06, stacey@guug.de writes:]
> 
> The Problem:
> - I don't have artwork for PCB layers, so can't see where internal traces/tracks
>   run. I guess some of the places I've listed may be impossible to drill.
> - Have schematics of PCB internal trace layers been released ?, 
>   perhaps as paper copies, or anon ftp'able gif files etc ) ?.
> - If not, perhaps George could list safe (x,y) drilling coordinates ? Thanks.

The pc532 only has 4 active layers (6 total), the 2 outer ones on each side.
Sandwiched in between these are the 2 power planes - one vcc the other gnd.
You can see all the active traces since there is nothing in-between the
power planes, the traces on the inner layers appear black.

PLEASE NOTE THAT WHEN YOU DRILL THROUGH YOU MUST BE CAREFUL NOT TWO SHORT THE
PLANES WITH BITS OF COPPER - ALSO, DO NOT USE CONDUCTIVE SCREWS FOR THE SAME
REASON. USE PLASTIC OR OTHER NON-CONDUCTIVE MEANS.

I personally would not want to drill through the board even being careful
to remove all pieces of copper from the drilling exercise - but good luck.

best regards,

-- 
George Scolaro
george@wombat.bungi.com                [37 20 51 N / 122 03 07 W]