It appears that the original DAC ACQ ribbon cable on our Inova 800
was crimped when it was installed in the factory. We have always had
minor bouts of np issues with that console and now the cable is failing
badly. We can recover it for awhile by massaging the crimped areas of
the cable but will be replacing it shortly with a new cable from Varian.
Unfortunately Varian claims to not have any service notes on the procedure
for changing this cable.
Has anyone replaced the DAC ACQ ribbon cable? I suspect we can
remove the old one without much grief, but it is unclear what the
best approach would be for snaking the new cable in place. My initial
inclination is to start with the folded section that plugs into the
HS&R board and try to snake that from the rear of the console through
the ribbon cable aperature in the RF card cage. If I can manage
that procedure, the only remaining problem would be snaking the
DAC end of that cable section over through the console walls into
the ribbon cable aperature for the digital card cage. Or would it
be better to try to start from the digital card cage side and snake
the entire ribbon through the console from that direction? Thanks in
advance for any advice on this.
Jack
ps The current cable may have some 90 degree folds in it within the
console bay walls. I'm a bit uncertain how those can be properly
introduced into the cable when snaking the ribbon cable through
the console from either direction (or if that can only be
easily done from one direction only).
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Jack W. Howarth, Ph.D. 231 Albert Sabin Way
NMR Facility Director Cincinnati, Ohio 45267-0524
Dept. of Molecular Genetics phone: (513) 558-4420
Univ. of Cincinnati College of Medicine fax: (513) 558-8474
Received on Mon May 19 2008 - 10:14:10 MST