Emax

To add to Ted's great advice. I would recommend examining the circuit
paths for a burnt/dark coloration. I had this on my keyboard circuit
board and was able to scrap off the damaged insulator and clean the
copper pathways and regain functionality. Also exmaine the solder joints
where the IC sockets are attached to the board for damage. Finally,
which you should do first while you are reseating the IC. Look for any
bent or broken/missing pins on the any of your connectors.


--- In emax@yahoogroups.com, Ted Summers <djtbs1@...> wrote:
>
> I don't have schematics, but reading the diagnostics manual....
> from emax 1 diagnostics, the tests are sequential. If emax 2 is the
> same.....
> The transpose being on, means it cannot properly see the analog board
or the
> query to that board froze up.
>
> LSI- stands for Large Scale Integration, used in describing the IC's.
(read
> large # of transistors make up the IC).
>
> So drive select and Master on probably indicate the LSI chips are
either
> having a bad connection issue or are actually bad.
> And the Preset so floppy doesn't work....
>
> What I am thinking is that the IC's have all come loose.
>
> Please take static-safe precautions.
> Remove the board(s) from the Emax and set them on a flat, static safe
> surface.
> Completely remove and reinsert each socketed IC one at a time.
> Replace the board in the Emax2
> Disconnect and reconnect any connectors to the boards that were
previously
> not disconnected when removing the board.
> Then try powering up again.
>
> Regards,
> Ted
>
>
>
>
> On Thu, Feb 5, 2009 at 1:06 PM, crazychris8547 chris.hutter@...wrote:
>
> > Nobody knows anything about this boot-up errors?
> >
> > Please, I need some help!
> >
> > Bye
> >
> > Chris
> >
> > --- In emax@yahoogroups.com <emax%40yahoogroups.com>,
"crazychris8547"
> > chris.hutter@ wrote:
> > >
> > > Hello everybody
> > >
> > > I just received an Emax II Rack, I bought through Ebay in USA.
> > > Surprisingly it has a Harddisc installed that the seller didn't
> > > mention. The Emax is in good condition.
> > > But when I power on the sampler, some boot-up diagnostic LED's are
lit.
> > >
> > > Transpose: Analog board (I disconnected it, so it's OK)
> > >
> > > Drive Select: LSI#2 (????)
> > >
> > > Master: LSI#1 (????)
> > >
> > > Preset Definition: Floppy Track 00 (I guess, the Floppy-Drive is
not
> > > working anymore thought it's Drive-LED is lit. I haven't had the
time
> > > yet to take the Floppy-Drive from my Emax 1 to test)
> > >
> > > Dynamic Allocation: Complete Software Boot (I guess that's lit,
> > > because of the problems above)
> > >
> > > Now I need some support about the LSI-Errors. What do they mean,
what
> > > can I do?
> > >
> > > Thank you very much for any help and sorry about my weak english
;-)
> > >
> > > Chris
> > >
> > > NB: Is there any group-member from Switzerland?
> > >
> >
> >
> >
>
>
> [Non-text portions of this message have been removed]
>