On Sun, 29 Mar 1998, Doug Spence wrote:
<snip>
>
> > > At the back of the main circuit board, just in front of where the ribbon
> > > cable connects to it, there is a 14-pin chip with a label "1F" beside it.
> > > In drive A, there is an empty 16-pin socket beside it, with "2F" written
> > > on the circuit board beside it. Drive B has something IN this socket - a
> > > BLUE 16-pin chip.
> >
> > The BLUE chip is a terminating resistor array and should be installed in
> > the last drive on the ribbon cable - the B drive. Leave it there.
>
> OK. That makes sense. The blue thing was the only difference I could see
> between drives from my restricted viewing window.
>
> > It is possible that the 14pin socket is the drive selector.
>
> It isn't. The cover article of the September 1984 issue of 80 Micro,
> entitled "Drive Ways", has photos of Tandon drives that appear identical
> to the ones in my Kaypros. The "DIP shunt for drive select" is in a
> 14-pin package, plugged into a 16-pin connector, just in front of the
> 14-pin chip I can see from the back of the drives.
>
> I won't know if these drives have the "DIP shunt" or the thing you
> describe until I get the drives out of the metal box.
True, as the DIP shunt is probably about 1.5" into the metal box.
<snip>
> > What you need is what is called an Allen Wrench. They come in all shapes
> > and sizes.
>
> Yeah, I've located precisely 40, in my father's toolbox, seemingly from
> two identical sets. But none are the proper size.
>
> It seems doubtful for an American product, but could these screws be
> metric? Most tools in this house are still Imperial. :)
No, they are US standard. The wrench is 7/64", I believe.
> > Your friendly local hardware store or electronic shop should
> > be delighted to sell you one or a set.
>
> Now I have to go looking. :)
>
>
> Doug Spence
> ds_spenc_at_alcor.concordia.ca
>
- don
donm_at_cts.com
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Don Maslin - Keeper of the Dina-SIG CP/M System Disk Archives
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Received on Sun Mar 29 1998 - 16:39:44 BST