Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!ut-emx!ccwf.cc.utexas.edu
From: awessels@ccwf.cc.utexas.edu (Allen Wessels)
Newsgroups: comp.sys.mac.hardware
Subject: Re: LW problem: black streaks, replacing toner doesn't help
Message-ID: <47420@ut-emx.uucp>
Date: 18 Apr 91 18:51:56 GMT
References: <1991Apr18.152635.17868@athena.mit.edu>
Sender: news@ut-emx.uucp
Reply-To: awessels@ccwf.cc.utexas.edu (Allen Wessels)
Organization: The University of Texas at Austin
Lines: 14

In article <1991Apr18.152635.17868@athena.mit.edu> smcguire@eagle.mit.edu (Scott McGuire) writes:

>I've talked to the repair people here and they don't have any suggestions. 
> Are our LaserWriters doing something to the toner cartridges that cause 
>them to go bad quickly?  Do we have a bad batch of cartridges (although 
>we're on a second order of them, they are the same brand - HP)?  Has 
>anyone seen this before?  Is there something I can clean?

Check the fuser roller for scoring or any deposits (like oils) that might be
accumulating on the side where the mark seems to be coming from.  You might
also check the rubber roller underneath.  See if the green felt areas are
turning brown from heat.  The other possibility is that the toner cartridge
corona wire (I think that's what it's called) might need cleaning with the 
tool that comes in the LW.