[rescue] Sun 3/60 SCSI issues (Kurt M. Nowak)

Kurt M. Nowak kurt.m.nowak at gmail.com
Sun Sep 1 21:42:57 CDT 2013

On 9/1/2013 4:07 PM, Michael Thompson wrote:
>> Date: Sat, 31 Aug 2013 23:48:02 -0700
>> From: "Kurt M. Nowak" <kurt.m.nowak at gmail.com>
>> To: Sun Rescue mail list <rescue at sunhelp.org>
>> Subject: [rescue] Sun 3/60 SCSI issues
>> Hi all,
>> I have a Sun 3/60 and I hooked up a terminated 411 box with a Sun D-50
>> to HD-50 cable and a Sun terminator. The LED on the terminator does not
>> come on when I power on the machine. I did some diagnostics using the
>> loopback connector mentioned in Sun3Arc.org and I get an error message
>> (see the end of the test output). The other tests (b,c,s and u) all are
>> ok...its the external loopback test that I have problems with. I know
>> its not the cable, because it works on another machine. Someone
>> mentioned that I might have a faulty fuse, but both of the two fuses on
>> the board are ok (checked continuity).
>> Any guidance would be greatly appreciated!
>> -Kurt
>> Cmd=>
>> SCSI Loopback Error: all signals shld be off(high) exp 0, obs 80
>> SCSI Loopback Error: Signals:ACK,BSY,SEL,ATN,REQ,MSG,C/D,I/O: exp F0, obs
>> 90
>> SCSI Loopback Error: Signals:ACK,BSY,SEL,ATN,REQ,MSG,C/D,I/O: exp F, obs C2
>> Test failed during pass 1.  Total errors = 1.
>> SCSI Interface Tests:  (Enter 'q' to return to Test Menu)
> You could make sure that your SCSI cable connects the terminator power from
> the D-50 to the HD-50. Some don't.

I thought that too, early on but I pretty much ruled that out now...The 
cable delivers term power to the 411/term when i use my spare 3/60 mobo. 

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