PDP-11/84 (KDJ11-B) and Error 61

Ulrich Tagge u.tagge at gmx.de
Mon Feb 1 14:24:00 CST 2016

Hi List,

I have a working 11/84, and I have decidec, to test some of my spare 
cards, starting with: KDJ11-B.

I see the following error, when powering up the system, which points me 
to the Clock.

Error 61
M8190 clock Error

See troubleshooting documentation

Command    Description

    1       Rerun test
    2       Loop on test

Type a command then press the RETURN key:

Any hints, what the problem could be? Is the clock in this new PDP's 
still generated out of the line frequency? Could it by, that the KDJ11-B 
is configured to a wrong HZ value?

Many Greetings

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