From MARSHALLR@opsusa.sms.siemens.comTue May 23 10:55:52 1995
Date: Tue, 23 May 1995 08:51 EST
From: MARSHALLR@opsusa.sms.siemens.com
Subject: RE: Obie 4-vox ramblings

>When working on the SEMs, *don't ever* power them up when they're not
fastened down nicely in their case.  The power sections on each SEM are
located at the bottoms of the boards where they can easily short out and
>fry by bumping up against the metal case.  Ask me how I know. :-(

A nice way to work on the SEM's w/o always screwing them down in the case is 
to replace the upper two screws w/ allen headed set screws (ie no screw 
heads), and leave the bottom two completely out.  This allows you to pull the 
SEM out w/o unfastening anything, yet keeps them from sliding down and 
shorting against the case....

RM