[rescue] Sun 3/60 SCSI

Kurt M. Nowak kurt.m.nowak at gmail.com
Sun Sep 1 21:39:14 CDT 2013

On 9/1/2013 2:39 PM, Jonathan Sturges wrote:
> I hate to ask the obvious, but what device is supplying termpwr?  If the
> terminator isn't lighting up, I'm guessing the host HBA is not.  If the 3/60
> doesn't or can't provide termpwr, something else needs to be set to do it.
> Maybe jumper the device in the 411 to provide it?  This can be dangerous if
> you forget and hook it up to another SCSI bus later that already has termpwr
> however.
> Good luck,
> Jonathan
> On Sep 1, 2013, at 1:00 PM, rescue-request at sunhelp.org 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
>> Message-ID: <5222E322.70800 at gmail.com>
>> Content-Type: text/plain; charset="us-ascii"
>> 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
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> rescue list - http://www.sunhelp.org/mailman/listinfo/rescue

I believe the 3/60 is supplying termpwr. I have a spare 3/60 mobo (with 
other problems) which when i swap it out, the term LED on the 411 comes 
on. This is without plugging the external 411 on, so this shows the 3/60 
is supplying the power. I'm studying the 3/60 schematic on bitsavers and 
may have some ideas. Thanks.


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