From mrlin at snf.stanford.edu  Fri Oct  2 15:21:10 2009
From: mrlin at snf.stanford.edu (mrlin at snf.stanford.edu)
Date: Fri, 2 Oct 2009 15:21:10 -0700
Subject: Problem tylan4 SNF 2009-10-02 15:21:09: TCUs say "B,b"
Message-ID: <mailman.462.1357938854.25973.tylan4-pcs@snf.stanford.edu>

TCUs show "B","b" (Bad) on status screen ("DI ST 4").



From seymour at snf.stanford.edu  Fri Oct  2 15:43:19 2009
From: seymour at snf.stanford.edu (seymour at snf.stanford.edu)
Date: Fri, 2 Oct 2009 15:43:19 -0700
Subject: Problem tylan4 SNF 2009-10-02 15:21:09: TCUs say "B,b"
Message-ID: <mailman.463.1357938854.25973.tylan4-pcs@snf.stanford.edu>

reset TCU and checked status. No "b or B" showing on tycom at this time. Tycon status shous tube below 400 degs with a setpoint of 800. Element breaker was not off and overtemp was not indicated. I will post a problem to check temp before using and during use.



From seymour at snf.stanford.edu  Fri Oct  2 15:45:42 2009
From: seymour at snf.stanford.edu (seymour at snf.stanford.edu)
Date: Fri, 2 Oct 2009 15:45:42 -0700
Subject: Problem tylan4 SNF 2009-10-02 15:45:41: please check temp prior to using.
Message-ID: <mailman.464.1357938854.25973.tylan4-pcs@snf.stanford.edu>

The tube was found cold with B's reported on Tycom. All is normal at this time and the tube is heating up to setpoint. Please check before and durine use. I will keep the tube under observation for a while.



From latta at snf.stanford.edu  Fri Oct  2 17:35:02 2009
From: latta at snf.stanford.edu (latta at snf.stanford.edu)
Date: Fri, 2 Oct 2009 17:35:02 -0700
Subject: Comment tylan4 SNF 2009-10-02 17:35:01: Oct quals
Message-ID: <mailman.465.1357938854.25973.tylan4-pcs@snf.stanford.edu>

WET900  00:39:00  50 wafer spread
  (expect about 920A)
Front = 981A, Std Dev = 14.3
Back = 980A, Std Dev = 6.0
Average All = 980A



From latta at snf.stanford.edu  Fri Oct  2 17:35:10 2009
From: latta at snf.stanford.edu (latta at snf.stanford.edu)
Date: Fri, 2 Oct 2009 17:35:10 -0700
Subject: Comment tylan4 SNF 2009-09-03 12:49:33: Sept quals
Message-ID: <mailman.466.1357938854.25973.tylan4-pcs@snf.stanford.edu>

archived



From tberg at snf.stanford.edu  Tue Oct  6 06:12:22 2009
From: tberg at snf.stanford.edu (tberg at snf.stanford.edu)
Date: Tue, 6 Oct 2009 06:12:22 -0700
Subject: Problem tylan4 SNF 2009-10-02 15:45:41: please check temp prior to using.
Message-ID: <mailman.467.1357938854.25973.tylan4-pcs@snf.stanford.edu>

Ray resolved the B and b issues looks fine for over a day