On May 23, 2021, at 10:37 AM, emanuel stiebler <emu at e-bbes.com> wrote:
 On 2021-05-21 16:38, Zane Healy via cctalk wrote:
  Is anyone familiar with the 4000/90 diagnostics?
It looks like it will fail the test of the LCSPX graphics board, if it?s not plugged into
a monitor, or is missing a loopback device. Is that correct?
 T 2 fails, but the manual makes it sound like I need a loopback 
 IIRC, it is normal that it fails, without a monitor attached.
 Did you try to switch to serial console, if it still complains? 
I suspected that was the case.  I?m currently only on a serial console, until I solve my
monitor cable problems.
   T 100 succeeds
when testing the LCSPX graphics board. 
 If you have amonitor attached, you would see
some colors flipping and
 some drawing being made on the screen 
 
Once I get a monitor attached, I plan to run it through the full screen diagnostics.
   The system had
been a boat anchor until a short time ago, as the battery in the Dallas DS1287A RTC was
dead.  Amazon just delivered two DS12887?s.  Once I replaced it, it came right up.  I was
surprised to see I had a 4GB and a 2GB drive in it. 
 Which ones did you get? (source?)
 Have to fix another two in the near future ? 
 
DS12887+ from Amazon.
   Now to dig out
the mouse, and wait for the parts to hook it up to a monitor. :-) 
 Yes, the monitor cable is fun to look for ? 
 
I should have a monitor cable by Thursday, assuming I don?t find the one that I?m sure I
have before that.  Since I?ve been searching for the cable for several months, I decided
to buy one off eBay, and I have the parts I should need to hook it up to a modern monitor.
Wow!  FedEx just delivered the cable, so I guess I?ll be hooking it up shortly.  It looks
brand new.
When I dug back to the mice, I found I have two VSXXX-AA hockey puck mice, so I?m even
more convinced that I have a monitor cable somewhere.  I also found a AUI loopback with
the mice.
The next part I need is a C15 power cable for MicroVAX 3300, I?ll see about picking that
up tomorrow or Wednesday.  I don?t believe that I?ve ever tested the MicroVAX 3300.  A
friend gave it to me when he was moving out of his apartment.  Given that it?s only 2.4
VUPS, I can?t see me doing anything with it at this point.  I should also test my MicroVAX
III while I?m at this.
Zane