[Coco] CoCo 1 troubles

[Rick Ulland]

If the cable has a few wires mid cable that are twisted, then position 
matters. If it is flat all the way thru, it does not.  But DIR 0 DIR 1 
should have worked either way.

There are two line driver chips (7406 or 7416) that are easily killed. 
So much so, CoNect had a SKU to socket & replace those back in the day.  
Push comes to shove, I'd question those first.

-ricku


On 12/23/20 11:12 AM, Salvador Garcia via Coco wrote:
>   Thanks Rick!
>
> The LED does light up when the cable is inserted upside down as soon as the floppy drive is powered up.
>
> I tried DIR 0 - 3. The drive motor spins with each command, but the LED never lights.
>
> Not part of a set. I bought one drive for the CoCo 1 and used it for a while (~ from 82 to 85) then it went into storage for about 27 years until I unpacked it for last Sunday's virtual reunion. The system was working properly the last time I used it (back in the mid to late 80s).
>
> I am going to clean the edge connector. It could also be the cable, but getting a replacement is going to take a while :-).
>
> Also, my cable has two drive connectors. Is there an issue if I connect the drive to the outermost cable connector?
>
> Thanks! Salvador
>
> PS: I am going to duplicate this thread on Facebook to request feedback from there.
>
>
>
>      El miércoles, 23 de diciembre de 2020 07:54:24 a. m. CST, Rick Ulland <rickulland1 at gmail.com> escribió:
>   
>   Re select LED - Did/does it light up when the cable is inserted upside
> down? All of the drives I've had did that, and I also did it a bunch.
> Could simply mean the LED died;-)
>
> Maybe this drive was part of a set? Try DIR 0 through DIR 3 - one of
> them should make the drive step and maybe add an audible clack as the
> head clamps down.
>
> ricku
>
>
>    
>