[sdiy] Russian divider chips..

[cheater cheater]

What are you repairing.. an alisa maybe?

Cheers,
D.

On Tue, Oct 23, 2012 at 4:36 AM, Ove Ridé <nitro2k01 at gmail.com> wrote:
> On 23 October 2012 00:10, Bob Weigel <sounddoctorin at imt.net> wrote:
>> KP1012( backward N )K3 for example (don't have a cyrilic character set
>> handy...) hehe.  Or the same ending in n1 instead of K3.   There are tons of
>> these under the keyboard.  I see some signals coming in probably but the
>> whole thing...1) I can't find a ground reference on any of the boards!   2)
>> from the diagram I found, on this site
>>
>> http://www.155la3.ru/dsheets.htm
>>
>> the image shows a chain of TT's or..flip flops I assume and then..HS's
>> coming from the Q' out....I assume... those are some logic gate maybe.  They
>> used square boxes to symbolize them though..  I don't know.  I can't read
>> the descriptions.  Does anyone read that language here?  Any help
>> appreciated..particularly
>
> Hint: You can actually select text in this document and paste it into
> Google Translate.
> <http://translate.google.se/#ru/en/>
>
> The first column are  T flip-flops, which toggles on an edge,
> presumably the positive one. The divisions are then output on pins
> 1-7. That's the easy part. 9-14 is translated as "signal outputs
> transformed by Walsh functions". The HS element is probably a SR
> (set/reset) flip-flop.
>
> Pin 15 is the input to the divider.
>
>> 1) What is pin 16?  Appears to be 10K front loaded from the 15V source on
>> the K3 suffix'd chips.  On the others (most of them) with the n1 suffix they
>> go to individual wires
>
> 16 = "power supply". Though, are you sure you haven't got the
> orientation of the chip wrong somehow?
>
>> 2) pin 8 is common to 5V source on K3 suffix's chips. There is 10K resistor
>> between the common connection of the n1 suffix'd chips and 5V.   I'm only
>> seeing 15V, 5v and ground coming from the power supply.
>
> 8 = "general" (with suggestions for common and ground)
>
>> Only 15V and 5V and 59 other wires attach to each board.  There are 4 total
>> boards.  Some of the wires are parallel but most appear to not be.  Haven't
>> traced them all out to figure out the pattern yet..anyway 12 of the n1
>> suffix chips and 6 of the K3 suffix chips per board!  ie. total of 72 down
>> there.  Any insights appreciated.
>
> Start by checking continuity between corresponding corner pins (1, 8,
> 9, 14) as I'm again suspecting that you've got the orientation of the
> chip wrong. If a corner pair (what looks like either 1/9 or 8/14) is
> connected between all the chips, that's likely the ground/power supply
> pair.
>
> --
> /Ove
>
> Blog: <http://blog.gg8.se/>
>
> "Here is Evergreen City. Evergreen is the color of green forever."
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