From daneman at snf.stanford.edu Mon Feb 2 19:51:01 2004 From: daneman at snf.stanford.edu (daneman at snf.stanford.edu) Date: Mon, 2 Feb 2004 19:51:01 -0800 Subject: Problem wafersaw 2004-02-02 19:51:00: Bad camera cable Message-ID: The cable going to the camera is bad and can result in no image from the camera. From parco at snf.stanford.edu Thu Feb 5 18:23:28 2004 From: parco at snf.stanford.edu (parco at snf.stanford.edu) Date: Thu, 5 Feb 2004 18:23:28 -0800 Subject: Problem wafersaw 2004-02-05 18:23:27: not cutting to true target sight Message-ID: single cut is not dicing at the intended sight or image (from camera view). It is offsetting the cut which is dicing in the wrong area. From maurice at snf.stanford.edu Fri Feb 6 11:03:23 2004 From: maurice at snf.stanford.edu (maurice at snf.stanford.edu) Date: Fri, 6 Feb 2004 11:03:23 -0800 Subject: Shutdown wafersaw 2004-02-06 11:03:22: Message-ID: From maurice at snf.stanford.edu Fri Feb 6 11:05:29 2004 From: maurice at snf.stanford.edu (maurice at snf.stanford.edu) Date: Fri, 6 Feb 2004 11:05:29 -0800 Subject: Problem wafersaw 2004-02-06 11:05:29: Light bulb need replacing Message-ID: stop, emergency stop and fast bulbs are burned out From maurice at snf.stanford.edu Fri Feb 6 11:05:45 2004 From: maurice at snf.stanford.edu (maurice at snf.stanford.edu) Date: Fri, 6 Feb 2004 11:05:45 -0800 Subject: Shutdown wafersaw 2004-02-06 11:03:22: Message-ID: From maurice at snf.stanford.edu Fri Feb 6 11:07:48 2004 From: maurice at snf.stanford.edu (maurice at snf.stanford.edu) Date: Fri, 6 Feb 2004 11:07:48 -0800 Subject: Problem wafersaw 2004-02-05 18:23:27: not cutting to true target sight Message-ID: Adusted Y offset alignment as per operating instructions. look now From maurice at snf.stanford.edu Fri Feb 6 11:07:54 2004 From: maurice at snf.stanford.edu (maurice at snf.stanford.edu) Date: Fri, 6 Feb 2004 11:07:54 -0800 Subject: Problem wafersaw 2004-02-02 19:51:00: Bad camera cable Message-ID: From chungchu at snf.stanford.edu Wed Feb 18 15:19:06 2004 From: chungchu at snf.stanford.edu (chungchu at snf.stanford.edu) Date: Wed, 18 Feb 2004 15:19:06 -0800 Subject: Comment wafersaw 2004-02-18 15:19:05: Failed to perform Y-off alignment Message-ID: From mtang at snf.stanford.edu Wed Feb 18 15:47:33 2004 From: mtang at snf.stanford.edu (Mary Tang) Date: Wed, 18 Feb 2004 15:47:33 -0800 Subject: Comment wafersaw 2004-02-18 15:19:05: Failed to perform Y-off alignment Message-ID: <4033F995.71253BD3@snf.stanford.edu> Hi all -- There have been more recent complaints about the Y-offset alignment on the wafersaw or that the saw is not cutting at the location expected (basically, a Y-offset calibration problem). It seems to me that there really isn't a problem... A couple of wafersaw users are now using different blades, which have slightly different thickness of blade hub than the blades we normally stock. This means that the Y-offset may be off more than usual (maybe a millimeter), instead of just being off by a few microns as we are normally used to seeing. This means that you HAVE to check the Y-offset alignment before you start dicing your device structures -- which you should be doing anyway, if you are following the procedures posed (I know, some of us have gotten lazy because it's not often far off). And, when you are doing the Y-offset calibration, you might find that the actual cut is off the video screen (I may be wrong, but have seen several times that it is further "up", i.e., in the positive Y-direction, when using the standard aluminum-hub blades from the Stockroom.) Hope this helps -- if not, let me know. And if anyone would like a refresher on Y-offset, let me know -- Thanks for your attention -- Mary -- Mary X. Tang, Ph.D. Stanford Nanofabrication Facility CIS Room 136, Mail Code 4070 Stanford, CA 94305 (650)723-9980 mtang at stanford.edu http://snf.stanford.edu From xpxie at snf.stanford.edu Sat Feb 21 12:47:08 2004 From: xpxie at snf.stanford.edu (xpxie at snf.stanford.edu) Date: Sat, 21 Feb 2004 12:47:08 -0800 Subject: Comment wafersaw 2004-02-21 12:47:07: The chuck vacuum pin miss one segment Message-ID: