Emax

Ahhh, yes! I forgot to mention the GREEN wire (pin 16).

It is labeled as "Power Supply On (active low)." Short this pin to GND to
switch power supply ON, disconnect from GND to switch OFF.

So, you'll want to connect the green to one of the black wires (i.e. pin 16
to pin 17).

-Dave

On 10/19/07, Simon_Owen <iss049@...> wrote:
>
>   Hi There
>
> Well, i've tried installing an ATX PSU in my emax following the pinouts
> listed, but still no
> joy. The PSU doesn't actually want to power up. Could this be due to the
> fact that some
> ATX PSU's get their power-on message by the usual method of pressing the
> "power on"
> button the PC thereby triggering the power on the PSU ??? - I dunno,
> anyone?
>
> Bloody thing!
>
> Simon
>
>
> --- In emax@yahoogroups.com <emax%40yahoogroups.com>, Alan Currall
> <alan@...> wrote:
> >
> > Dave,
> >
> > Thank you so much. That is so clear and thorough. You've filled in
> > all the gaps left by the other descriptions of using an ATX on this
> > message board. I realise that people are probably just trying to
> > deter 'have-a-go amateurs' like me from doing it themselves and
> > getting an electric shock, but a lot of the previous advice on this
> > subject seems to expect a general grounding in electronics (no pun
> > intended).
> >
> > I'll let you know how I get on. (If I survive!)
> > Alan
> >
> > On 13 Oct 2007, at 5:44AM, Dave Sotnick wrote:
> >
> > > I just got out my multimeter and figured out the voltages of the
> > > existing
> > > wiring from my working Emax I power supply. It is as follows:
> > >
> > > Green: Ground/Earth (0v)
> > > Purple: -12v DC
> > > Orange: +12v DC
> > > Yellow: +5v DC
> > >
> > > The three sets of four wires as above each carry the same voltages,
> > > but
> > > presumably have different current requirements.
> > >
> > > The ATX power supply pinouts for a 24-pin ATX power supply (from here:
> > > http://en.wikipedia.org/wiki/ATX) show the following mapping should
> > > work:
> > >
> > > ATX Connector Emax Connector
> > > ----------------------------------------
> > > Pin 3 (black) Pin 2 (green)
> > > Pin 4 (red) Pin 1 (yellow)
> > > Pin 10 (yellow) Pin 3 (orange)
> > > Pin 14 (blue) Pin 4 (purple)
> > > Pin 5 (black) Pin 7 (green)
> > > Pin 6 (red) Pin 6 (yellow)
> > > Pin 11 (yellow) Pin 8 (orange)
> > > Pin 14 (blue) Pin 9 (purple)
> > > Pin 7 (black) Pin 12 (green)
> > > Pin 21 (red) Pin 11 (yellow)
> > > Pin 11 (yellow) Pin 13 (orange)
> > > Pin 14 (blue) Pin 14 (purple)
> > >
> > > Note that the -12v supply (pin 14/blue) is bridged to three purple
> > > wires on
> > > the Emax wiring harness, and the +12v supply (available on pins
> > > 10/11 on
> > > ATX24) is shared from pin 11 to pins 8 and 13 of (orange) on the
> > > Emax wiring
> > > harness.
> > >
> > > Before you plug anything in, make sure you have the right voltages
> > > on the
> > > connector that goes onto the Emax I mainboard:
> > >
> > > 1: yellow (+5v)
> > > 2: green (COM)
> > > 3: orange (+12v)
> > > 4: purple (-12v)
> > > 5: n/c
> > > 6: yellow (+5v)
> > > 7: green (COM)
> > > 8: orange (+12v)
> > > 9: purple (-12v)
> > > 10: n/c
> > > 11: yellow (5v)
> > > 12: green (COM)
> > > 13: orange (+12v)
> > > 14: purple (-12v)
> > >
> > > Hope that helps!
> > >
> > > -Dave
> > >
> > > On 10/10/07, alancurrall <alan@...> wrote:
> > > >
> > > > I've got an atx power supply waiting to go into my Emax 1 SE Rack,
> > > > since the original PSU went bang. I know there are helpful Emax
> > > users
> > > > out there who've replaced their power supplies in this way and claim
> > > > it's a relatively simple fix. However, I don't have a clue as
> > > regards
> > > > the wiring. The multi-cable coming from the ATX has different
> > > coloured
> > > > wires than the multi-cable that connects to the Emax circuit-
> > > board, so
> > > > it's not a smiple matter of matching them up.
> > > >
> > > > Can anyone put me right? I only had this wonderful machine a week
> > > > before the power went. I've heard what it's capable of, but now I
> > > left
> > > > with a very sad, mute metal box.
> > > >
> > > > Here's hoping...
> > > > Alan
> > > >
> > > >
> > > >
> > >
> > > [Non-text portions of this message have been removed]
> > >
> > >
> > >
> >
> >
> >
> > [Non-text portions of this message have been removed]
> >
>
>  
>


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