RA81 Problems

[ephraim%TECHUNIX.BITNET at wiscvm.wisc.EDU]

We are runnning Unix 4.2 BSD (soon to be 4.3 BSD) on a Vax785.  Our UDA driver
is already the 4.3 BSD version.  We have a chronic problem with our RA81 that
it goes offline with error messages (such as the one below) and then hangs.
 
        ra0f: hard error sn23448 OFFLINE
 
Digital has switched all parts of the controller and the problem persists.  Can
anyone give me a lead as to what is wrong here?
 
Please reply by e-mail to the address below (and not the one in the From: line).
 
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Ephraim Silverberg,
Faculty of Electrical Engineering,
Israel Institute of Technology,
Haifa, Israel.
 
BITNET  :        ephraim at techsel
ARPANET :        ephraim%techsel.bitnet at wiscvm.arpa
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UUCP    :        {almost anywhere}!ucbvax!ephraim at techsel.bitnet
 
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