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Message

Re: Question regarding backup battery mod.

2008-03-01 by funkymonkeypeter

Yes, both R1 and D1 are present (right by CN9A (C-Cell battery
compartment connector to board)).

Thank you.



--- In korgpolyex@yahoogroups.com, "korgpolyex800" <korgpolyex800@...>
wrote:
>
> Since you say your board has the square solder islands then I'll be
> very surprised if your board actually has an R1 and D1 at all.
> 
> Are you able to find them? If you are, where are they?
> 
> Mike.
> 
> 
> --- In korgpolyex@yahoogroups.com, "funkymonkeypeter"
> <funkymonkey3.14@> wrote:
> >
> > This is my second Poly-800.  The first had a problem with the
> > headphone amp and DC-in jack.  This one works great and I don't want
> > to muck it up.
> > 
> > If some one can answer my question I promise not to tell anyone what
> > really happened on 9/11.
> > 
> > So, to cut or not to cut?
> > 
> > 
> > --- In korgpolyex@yahoogroups.com, "funkymonkeypeter"
> > <funkymonkey3.14@> wrote:
> > >
> > > Regarding the instructions here:
> > > 
> > > http://analog.no/mods/korg_poly-800_mk-1_battery_backup.htm
> > > 
> > > 
> > >     *  Open the Poly-800 by removing all screws at the bottom.
Locate
> > > the processor board. This is the large circuit board next to the
> > > battery compartment.
> > >     * In the upper left corner you'll find Resistor R1 and Diode D1.
> > > Remove these. (Just cut the legs, but leave as much as possible
of the
> > > D1 legs, see next steps.)
> > >     * If you have a late revision MK-1 there will be two fairly
large
> > > solder "islands" in the center of the board. The battery is mounted
> > > here. The "island" to the front of the keyboard is ground.
> > >     * If you have an early revision you wont find this. The battery
> > > must then be connected by wires, the plus to the junction between
> > > R1/D1 and the minus to the other leg of D1.
> > >     * Any 3V lithium with solder lugs can be used as long as it
is not
> > > to big physically for mounting to the board. A wristwatch type
(2025,
> > > 2032) is fine.
> > > 
> > > 
> > > 
> > > I have the model with the solder islands, do i need to cut the
legs to
> > > R1 and D1?  Or can I just solder to the islands and leave everything
> > > else intact? 
> > > 
> > > Thank you.
> > >
> >
>

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