CPU Tests

[Zane Healy]

On Aug 10, 2021, at 1:55 PM, David Coolbear via cctech <cctech at classiccmp.org> wrote:
> 
> My KA655 CPU is freezing during the power up sequence, after test number 04:
> 
> KA655-B V5.3, VMB 2.7
> Performing normal system tests.
> 40..39..38..37..36..35..34..33..32..31..30..29..28..27..26..25..
> 24..23..22..21..20..19..18..17..16..15..14..13..12..11..10..09..
> 08..07..06..05..04..
> 
> Any suggestions as to what might be wrong?

You never get the dead sergeant prompt?

Looking at the manual, I think you want pages 4-20 and 4-21.  If I’m right, it’s failing on the board reset.

http://bitsavers.org/pdf/dec/vax/655/EK-306A-MG-001_655Mnt_Mar89.pdf

Zane