RE: mvme6100 HW issues?

["Luchini, Kristi L." <luchini@slac.stanford.edu>]

Hi,

Yes, we had the same problem in lcls. A some point the boards were manufactured such that that the bottom of the board would catch on the emi strip.
We even had components ripped off or loosened. It was a mess. So we talked to the vendor about adding a film cover on the bottom of these boards, and
In the meantime we did as Stephanie has done, removed the EMI strip on the VME crates to solve our problem.  So far nothing more has been done with the
Additional film strip on the bottom of these boards.

- Kristi

-----Original Message-----
From: tech-talk-bounces@aps.anl.gov [mailto:tech-talk-bounces@aps.anl.gov] On Behalf Of Allison, Stephanie
Sent: Wednesday, February 01, 2012 8:39 AM
To: Vesna Samardzic-Boban; tech-talk@aps.anl.gov
Subject: RE: mvme6100 HW issues?

Hi Vesna,

At SSRL/SPEAR, we had a high failure rate for our MVME6100 boards until we pulled all EMI stripes off our Wiener VME crates.  The boards were repaired by the manufacturer.

Stephanie Allison

> -----Original Message-----
> From: tech-talk-bounces@aps.anl.gov [mailto:tech-talk-bounces@aps.anl.gov] On Behalf
> Of Vesna Samardzic-Boban
> Sent: Tuesday, January 31, 2012 10:47 PM
> To: tech-talk@aps.anl.gov
> Subject: mvme6100 HW issues?
> 
> Hi,
> 
> Has anyone experienced HW issues with MVME6100 board (or any other MVME board)?
> 
> Recently we bought our first Motorola/Emerson MVME6100 board.
> It worked fine for about a couple of months but then it would start to show errors and stop
> working (unresponsive).
> As nothing was changed in the HW setup (only that board in the crate, the crate open, the
> fan ok, etc.), and the errors caught on the screen looked like given below, I believe it could
> be a HW fault.
> 
> Some of the errors caught on the screen:
> MVME6100>
> isr: CPU Bus Parity Error
> isr: Reg0x78 = 000001f0, Address = 002d6ab8
> isr: Data High:Low = 00000000:00000000
> isr: Parity = df, Cause = 30000040
> 
> After the screen freezes, it is not possible to enter anything from the keyboard.
> 
> It happens regardless of the way i boot i.e. for both MOTLoad FW (S4 = off on on off) or
> vxWorks (S4 = off off off off).
> 
> I noticed the heatsink on the board is loose and possibly not mounted properly (also would
> get very hot) - so I just sent it back to the supplier/manufacturer.
> 
> Has anyone experienced similar problems with mvme6100 or any other mvme board?
> 
> Regards, Vesna
> 
> 
> Vesna Samardzic-Boban | Senior Controls Engineer | Australian Synchrotron
> p: (03) 8540 4238 | f: (03) 8540 4200
> vesna.samardzic-boban@synchrotron.org.au | www.synchrotron.org.au
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