[Info-vax] DEC 3000/900 bootup problem

[Vance Haemmerle]

johnwallace4 at yahoo.co.uk wrote:
> On Jan 5, 10:46 am, Vance Haemmerle <va... at toyvax.Glendale.CA.US>
> wrote:
> 
>>It looks like the sun has set on my 3000/900 system.
>>After removing and backing up my disks on another
>>system (the system disk had one problem with a decw font
>>that had a lost header - which I recovered from a backup
>>and then it passed ANALYSE/DISK), now my system has a scsi
>>hardware error on power up (?? 002 0008).  The console
>>"test scsi" fails the data Trans test...
>>
>>? T-ERR-SCSI A - Data Trans Test - nondma/virt inq data miscompare
>>
>>but "show device" correctly sees all the drives and sizes.  I
>>removed all the drives I had pulled before and I still get the
>>error. Perhaps I did something to the cables though they seem ok.
>>
>>--
>>Vance Haemmerle
> 
> 
> Before you write this off forever...
> 
> Have you done the obvious things like reseating memory (and, if
> appropriate, IO) cards?
> 
> Is there a more in-depth memory diagnostic on this box than the power-
> on default check?
> 
> Although it's been said earlier that "you've proved that the hardware
> isn't at fault", that's not strictly true - you've just shown that the
> hardware doesn't have any problems picked up by simple diagnostics.
> 
> Others may well have other suggestions but those would be my first
> recommendations.


   I did remove and reseat the memory.  I also put an external
tape drive on the B (external bus) and it also showed a data
trans test failure.  If the internal bus and external bus
are completely cable separate (I believe they are) this may
point to a controller problem.  Perhaps I disturbed it when
I cleaned out dust from the system.

   There is an extensive memory test available from the
SRM console ("test mem") that does read/write and address tests
all of which pass.

--
Vance Haemmerle