Date   : Wed, 22 May 1985 20:41:00 PDT
From   : Alan Bomberger <ACB.TYM@office-2.ARPA>
Subject: Re: 8 inch drive problem

Well thanks for the help.  I found that the index LED was fading out and 
finally stopped all output.  The drive will not unload the heads if the disk is
not ready (weird).  Also the disk stays ready once the condition was detected 
untill the door is opened.  Apparently the LED was ok right after power but 
faded as it got hot.  I replaced it with a high output Infrared LED from radio 
shack and all is well.  Weird!