From mtang at stanford.edu Tue May 16 15:27:22 2006 From: mtang at stanford.edu (Mary Tang) Date: Tue, 16 May 2006 15:27:22 -0700 Subject: Question about the wafersaw In-Reply-To: <20060516220706.1A7E24C313@smtp1.stanford.edu> References: <20060516220706.1A7E24C313@smtp1.stanford.edu> Message-ID: <446A51CA.8040903@stanford.edu> Hi everyone -- Sorry about the wafersaw. The good news is that the theta/rotation motor is OK (repairing this, I understand, is a nightmare.) However, the reason why the motor isn't rotating properly isn't clear, but suspicion is the driver board. Elmer and Cesar are going to try a few other things to ensure that the limit switches are OK, and then order a replacement board if nothing obvious shows up. If you desperately need dicing services, there is a dicing saw in Ginzton labs, which I believe is available as a service to Stanford researchers. There's also a website which lists some local dicing services: http://snf.stanford.edu/Process/Resources/Dicing.html One that is not list is American Dicing (different from America Precision Dicing, which a lot of people use.) Again, sorry about the problem, but Elmer and Cesar are on the job. 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 Seoung-Jai Bai wrote: >Hello Mary Tang, > > I'm sorry for disturbing you with this email, but want to know when you >expect the machine be up and running. >I urgently need the machine and was wondering if I have to find a service >outside. Please let me know how is the maintenance going. >Thank you!! > > >seoung > > > > From mtang at stanford.edu Tue May 16 16:59:26 2006 From: mtang at stanford.edu (Mary Tang) Date: Tue, 16 May 2006 16:59:26 -0700 Subject: Question about the wafersaw In-Reply-To: <20060516231943.9A5B54C79E@smtp2.stanford.edu> References: <20060516231943.9A5B54C79E@smtp2.stanford.edu> Message-ID: <446A675E.8050809@stanford.edu> Hi Il Woong and others -- The wafersaw is UP! It turns out that Ed Myers had seen this problem years ago and had been told it was an EPROM problem. On hearing this, Cesar reset the EPROM board and it works. Not that this makes any sense, but now the motor is rotating in the right direction and working fine. So, the wafersaw is now available and working well. Mary Il Woong Jung wrote: >Hi Mary, > >I have just talked to the crystal shop in Ginzton. >The wafersaw there has been down for several months now. >It does not seem like it will be fixed anytime soon. >It seems like vendors will be the way to go temporarily. > >Il Woong > >-----Original Message----- >From: Mary Tang [mailto:mtang at stanford.edu] >Sent: Tuesday, May 16, 2006 3:27 PM >To: Seoung-Jai Bai; wafersaw at snf.stanford.edu >Subject: Re: Question about the wafersaw > >Hi everyone -- > >Sorry about the wafersaw. The good news is that the theta/rotation >motor is OK (repairing this, I understand, is a nightmare.) However, >the reason why the motor isn't rotating properly isn't clear, but >suspicion is the driver board. Elmer and Cesar are going to try a few >other things to ensure that the limit switches are OK, and then order a >replacement board if nothing obvious shows up. > >If you desperately need dicing services, there is a dicing saw in >Ginzton labs, which I believe is available as a service to Stanford >researchers. There's also a website which lists some local dicing services: > >http://snf.stanford.edu/Process/Resources/Dicing.html > >One that is not list is American Dicing (different from America >Precision Dicing, which a lot of people use.) > >Again, sorry about the problem, but Elmer and Cesar are on the job. > >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 joshuar at stanford.edu Tue May 16 17:59:57 2006 From: joshuar at stanford.edu (Josh Ratchford) Date: Tue, 16 May 2006 17:59:57 -0700 Subject: Question about the wafersaw In-Reply-To: <446A675E.8050809@stanford.edu> References: <20060516231943.9A5B54C79E@smtp2.stanford.edu> <446A675E.8050809@stanford.edu> Message-ID: Hi Mary and wafersaw users, I was so excited about the wafersaw being up that I decided to use it immediately. Things worked very well for me and I was able to dice up my bare Si [111]wafer into 2 cm x 2 cm chips. Unfortunately the "theta stop" error started prompting again when I pressed unload to remove my diced wafer. Sorry for bearing the bad news. Josh On 5/16/06, Mary Tang wrote: > > Hi Il Woong and others -- > > The wafersaw is UP! It turns out that Ed Myers had seen this problem > years ago and had been told it was an EPROM problem. On hearing this, > Cesar reset the EPROM board and it works. Not that this makes any > sense, but now the motor is rotating in the right direction and working > fine. So, the wafersaw is now available and working well. > > Mary > > Il Woong Jung wrote: > > >Hi Mary, > > > >I have just talked to the crystal shop in Ginzton. > >The wafersaw there has been down for several months now. > >It does not seem like it will be fixed anytime soon. > >It seems like vendors will be the way to go temporarily. > > > >Il Woong > > > >-----Original Message----- > >From: Mary Tang [mailto:mtang at stanford.edu] > >Sent: Tuesday, May 16, 2006 3:27 PM > >To: Seoung-Jai Bai; wafersaw at snf.stanford.edu > >Subject: Re: Question about the wafersaw > > > >Hi everyone -- > > > >Sorry about the wafersaw. The good news is that the theta/rotation > >motor is OK (repairing this, I understand, is a nightmare.) However, > >the reason why the motor isn't rotating properly isn't clear, but > >suspicion is the driver board. Elmer and Cesar are going to try a few > >other things to ensure that the limit switches are OK, and then order a > >replacement board if nothing obvious shows up. > > > >If you desperately need dicing services, there is a dicing saw in > >Ginzton labs, which I believe is available as a service to Stanford > >researchers. There's also a website which lists some local dicing > services: > > > >http://snf.stanford.edu/Process/Resources/Dicing.html > > > >One that is not list is American Dicing (different from America > >Precision Dicing, which a lot of people use.) > > > >Again, sorry about the problem, but Elmer and Cesar are on the job. > > > >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 > > > -------------- next part -------------- An HTML attachment was scrubbed... URL: From mtang at stanford.edu Tue May 16 22:58:47 2006 From: mtang at stanford.edu (Mary Tang) Date: Tue, 16 May 2006 22:58:47 -0700 Subject: Question about the wafersaw In-Reply-To: References: <20060516231943.9A5B54C79E@smtp2.stanford.edu> <446A675E.8050809@stanford.edu> Message-ID: <446ABB97.4010003@stanford.edu> Oh fiddlesticks... Thanks Josh, for the info and detail. I'm sure it will help in troubleshooting... M Josh Ratchford wrote: > Hi Mary and wafersaw users, > > I was so excited about the wafersaw being up that I decided to use it > immediately. Things worked very well for me and I was able to dice up > my bare Si [111]wafer into 2 cm x 2 cm chips. Unfortunately the > "theta stop" error started prompting again when I pressed unload to > remove my diced wafer. > > Sorry for bearing the bad news. > > Josh > > > On 5/16/06, *Mary Tang* > wrote: > > Hi Il Woong and others -- > > The wafersaw is UP! It turns out that Ed Myers had seen this problem > years ago and had been told it was an EPROM problem. On hearing this, > Cesar reset the EPROM board and it works. Not that this makes any > sense, but now the motor is rotating in the right direction and > working > fine. So, the wafersaw is now available and working well. > > Mary > > Il Woong Jung wrote: > > >Hi Mary, > > > >I have just talked to the crystal shop in Ginzton. > >The wafersaw there has been down for several months now. > >It does not seem like it will be fixed anytime soon. > >It seems like vendors will be the way to go temporarily. > > > >Il Woong > > > >-----Original Message----- > >From: Mary Tang [mailto:mtang at stanford.edu > ] > >Sent: Tuesday, May 16, 2006 3:27 PM > >To: Seoung-Jai Bai; wafersaw at snf.stanford.edu > > >Subject: Re: Question about the wafersaw > > > >Hi everyone -- > > > >Sorry about the wafersaw. The good news is that the theta/rotation > >motor is OK (repairing this, I understand, is a nightmare.) However, > >the reason why the motor isn't rotating properly isn't clear, but > >suspicion is the driver board. Elmer and Cesar are going to try > a few > >other things to ensure that the limit switches are OK, and then > order a > >replacement board if nothing obvious shows up. > > > >If you desperately need dicing services, there is a dicing saw in > >Ginzton labs, which I believe is available as a service to Stanford > >researchers. There's also a website which lists some local > dicing services: > > > >http://snf.stanford.edu/Process/Resources/Dicing.html > > > >One that is not list is American Dicing (different from America > >Precision Dicing, which a lot of people use.) > > > >Again, sorry about the problem, but Elmer and Cesar are on the job. > > > >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 > > >