[sdiy] ARP keyboard schematics

[Dana Scott]

We built so few of the 2500's my memory of them is nearly non existent.
The keyboard module for the 2500 does not stick out in my mind at all. The
only reason for that must be that it is identical to the 2600's early
keyboard.
In fact the only memory of the 2500 keyboard I have is repairing the unit
that came back from the movie "close encounters". They sawed up the wood of
the keyboard and stuck bits of mirror on what was left.
>From what I remember of the 2600's kbd (3604) , it is a very simple circuit.
Because you have 2 identical circuits, you can just compare readings from
one side to the other.
I loved the reverse color keys of the 2500 so much I raided the spare parts
bin for a set to outfit my Omni!
-Dana


----- Original Message ----- 
From: "Peter Grenader" <peter at buzzclick-music.com>
To: "St Eric's..." <sainteric at piramiden.demon.nl>;
<synth-diy at dropmix.xs4all.nl>
Sent: Wednesday, August 25, 2004 10:12 AM
Subject: Re: [sdiy] ARP keyboard schematics


> Hey  - this is cool.
>
> Does anyone know if:
>
> 1)  There's a similar schematic resource for the 2500 keyboard?
>
> 2) Can a 2600 keyboard schematic be used to repair a 2500's keyboard as
far
> as the Gate out?  Is it the same circuit?
>
> I've got as customer with a 2500 and the gate out doesn't work on the main
> (white key) keyboard.  I really don't want to open it up and start messing
> with it unless I've got a road map, especially because I have to go to his
> home in order to do this.
>
> - P