Emax

The keys are in a matrix on Emax 1, if Emax 2 is similar it could be the ICs
that interface to that section of the matrix or a single connection that is
common to all the keys and one connection for all the panel buttons......
I don't have a schematic at work to check at the moment.....

no Keanu / red pill related jokes, please......

Just a thought.

Regards,
Ted

On Tue, Nov 10, 2009 at 10:05 AM, chevytravelleruk <
chevytravelleruk@...> wrote:

>
>
> I don't think so.. the fact that certain groups of keys stop working
> coupled with the failure of some of the front buttons seems to point the
> finger of blame at the scanning processor..
>
>
> --- In emax@yahoogroups.com <emax%40yahoogroups.com>, el macaco <elmacaco@...>
> wrote:
> >
> >
> > Are you sure it isn't just the key and switch contacts?
> >
> >
> >
> >
> >
> >
> >
> > To: emax@yahoogroups.com <emax%40yahoogroups.com>
> > From: jammie.emma@...
>
> > Date: Mon, 9 Nov 2009 14:19:42 +0000
> > Subject: Re: [emax] Emax II Service manual plea
> >
> >
> >
> >
> >
> > first thing to do is open the machine a reset all socketed ic then put
> the machine back to gether and try again the ic chips can work loose or
> curode use deoxit to clean the pins on the ic do 1 chip at a time get a
> white marker and put an arrow on the chip and the pcbthe arrow pointing up
> on the ic and then place an arrow facing down pionting to the arrow on the
> ic that way you wont lose the orientation of the ic
> >
> > ----- Original Message -----
> > From: chevytravelleruk
> > To: emax@yahoogroups.com <emax%40yahoogroups.com>
> > Sent: Monday, November 09, 2009 1:06 PM
> > Subject: [emax] Emax II Service manual plea
> >
> > Hi all
> >
> > I have an Emax II Turbo keyboard which has developed an intermittant
> fault.
> > Periodically, some of the keys fail to trigger and this has now worsened
> so that certain number buttons don't respond either. Now I believe that I
> must have a failing Scanning chip in the Emax somewhere, but sadly, I don't
> know how to locate/replace it. Does anyone here have a service manual they
> would be willing to sell/copy?.. or could anyone advise me which chips need
> changing and their locations?..
> > I would be prepared to pass this on to a reputable repairer/engineer(I am
> London based), but sadly they seem to be few and far between these days.. so
> any recommendations there?..
> >
> > Help
> >
> > ----------------------------------------------------------
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>  
>


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