[GreenKeys] ASR33 keyboard adjustments

[Michael Katzmann]

That's possible, the answerback is in bad shape and I am waiting on some
parts to repair it.
The only thing that might discount this hypothesis is the flawless
performance of the tape reader. If vibrations were causing errors when
using the keyboard, then the same should occur when reading from tape
(since each bit of the keyboard, tape reader and answerback are all
connected together)

On Sun, Dec 20, 2020 at 7:53 PM William Wuttke <wcwuttke at att.net> wrote:

> Michael,
>
> I had an intermittent sticky bit that was caused by a broken contact
> holder on the answerback drum assembly.
>
> Bill
> On Sunday, December 20, 2020, 02:14:45 PM PST, Michael Katzmann <
> vk2bea at gmail.com> wrote:
>
>
> I'm having a hard time tracking down two bugs with the ASR33 keyboard, and
> so I seek to tap into the wisdom of the group 8-)
> The first is an occasional bit 1 (LSB) flip to mark. (So a BBBBBBBB...
> becomes BBBBBBCBBBB)
> I looked at the contact wire for B1 and it looks OK. The tape reader is
> perfect, implying to me that the TD is OK. (this is in local loop back, so
> it cannot be a timing issue)
> The second problem is an occasional double character so ABAB becomes ABAAB.
> If anyone has suggestions as to the likely culprits, please let me know!
>
> thanks,
>   Michael
>
>
>
>
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-- 
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