Visual 200 (was Visual 100 Terminal - Circuit Diagram Wanted)

[william degnan]

Bare in mind the keyboard keys will likely have to be re-foamed.  I had to
do that with my Visual 1050, which is the full system version CP/M
computer.  I'd see if there are similarities to the 1050, I bet the video
display circuits would have similarities, you might be able to find 1050
schematics if you can't find exactly what you have.
Bill

On Wed, Oct 14, 2015 at 3:19 PM, Jonathan Chote <jonathan.chote at gmail.com>
wrote:

> On Wed, Oct 14, 2015 at 10:02 AM, Jonathan Chote <jonathan.chote at gmail.com
>> >
>> wrote:
>>
>> I know it exists out in the wild somewhere, but I can't find a copy
>>> myself. It's for a VT100 clone terminal called the Visual 100 - from
>>> around
>>> 1982.
>>>
>>>
>> Mistake on my behalf. Was working on it last night and it's actually the
> earlier model, the Visual 200.
>
> After some basic repairs to the power supply section, I now have a
> flashing "ON" light on the keyboard which I believe is an error code from
> the self test (taking queues from the Visual 100 manual).
>
> CPU removed - "ON" light stays lit
> CPU installed - cold start - 3 beeps, then ON light flashes
> CPU installed - less than 5 minutes since last power up - ON light
> flashes, no beeps
>
> Messing with the Mask ROM in it's socket also created a few scenarios with
> lots of fast beeps, and the CAPS LOCK key staying lit, but I reseated it
> and the system returned to the above situation.
> CRT section doesn't appear to start up, but didn't blow up either, so
> that's a plus. Have not had a chance to go over it with a scope yet.
>
> So if anyone has...
> - parts list
> - user guide
> - circuit diagram
> - a spare logic board laying around
> - or remembers anything about these terminals
>
> Please let me know!
>
> Cheers,
>
> Jono
>



-- 
Bill