The psu are made by a tiawan company call skynet
There are several version revisions
The first were linear types with a switching circuit that if the switch on the back was set to 220-240 would make the dual 110 inputs to the transformer switch to series
The secondary voltages were still the same and the rectifiers and bridge rectifiers and power regulators would produce the require voltages and the smoothing caps would remove ripple from the dc lines
You have to be careful on the -12 regulator as its connected to a heat sync and its not connected to ground so the whole heat sync is live when switched on
The 5 v has a variable adjustment from the power regulator to get exactly 5 volts
The emax 2 psu is a active sensing switchmode type
It switches internally to any voltage from 100-250
Skynet made most of emu psu
But you would not find many psu designs in schematics
As they were usually sub contracted out
Sent from Samsung Mobile
-------- Original message --------
From: "Ted Summers djtbs1@gmail.com [emax]" <emax@yahoogroups.com>
Date: 21/12/2014 01:51 (GMT+00:00)
To: emax@yahoogroups.com
Subject: Re: [emax] Emax II service manual
Schematics for the various power supplies are not in the Emax 1 or Emax 2 service manuals.
The power supplies were supplied to Emu by a couple of different vendors.
This is possibly why they weren't included in the manual.
-T
On Dec 20, 2014, at 5:29 PM, Scott Stevens coolscott_7@yahoo.com [emax] wrote:
DOES ANYONE HAVE THE EMAX II PSU SCHEMATICS????????????????????????????
On Saturday, December 20, 2014 2:38 PM, "Ted Summers djtbs1@gmail.com [emax]" <emax@yahoogroups.com> wrote:
EVERYONE-
One may question all they wish in regards that copyright "makes sense" or not.
I agree it would be fine in my opinion for it to be freely available.
Copyright law doesn't make sense in all points to me.
However, it doesnt change the fact that per the LAW here in the US where the company resides and Yahoo is hosted, and the Yahoo Terms Of Service this would be in violation.
Musicparts had to have signed a contract for "right to copy" from E-mu to be able to resell the item.
Someone show me a document which clearly indicates the rights aren't owned or are released by E-mu Systems and we can have the files posted.
If no person has such document, then I would ask EVERYONE just be helpful to others as possible within the Terms of Service.
If someone disagrees with the Yahoo! Terms of Service perhaps those person(s) should move to a forum where these restrictions aren't in effect.
Like they say "if you have nothing nice to say, say nothing at all."
Ted
Co-Moderator
On Dec 20, 2014, at 9:22 AM, krikor kouchian krikorola@gmail.com [emax] wrote:
I wrote to Creative regarding this, once I bought a casio RZ1 service manual from such reseller, and the legit thing was totally nonsense of course, since that i’m questioning the legit status of the musicparts/emax
Le samedi 20 décembre 2014, schtom83318@yahoo.com [emax] <emax@yahoogroups.com> a écrit :
>
>
> So I can pay music parts for a downloadable manual and he'll make sure to get the money to creative?
>
> It's the little black box next to the processor that I'm getting the buzzing from. Seems to be a transformer. I just want this board working and there are not that many parts to break. I did find the metal piece of the floppy stuck in the floppy drive. I don't know if that would have shorted something out. The keyboard is one of the cleanest I've seen inside. I just have nothing on the screen. The backlight works.
>
>
--
http://www.krikor.fr
+33632199413
For Live&Dj bookings contact: cedric@referenceprods.fr
Le samedi 20 décembre 2014, schtom83318@yahoo.com [emax] <emax@yahoogroups.com> a écrit :
>
>
> So I can pay music parts for a downloadable manual and he'll make sure to get the money to creative?
>
> It's the little black box next to the processor that I'm getting the buzzing from. Seems to be a transformer. I just want this board working and there are not that many parts to break. I did find the metal piece of the floppy stuck in the floppy drive. I don't know if that would have shorted something out. The keyboard is one of the cleanest I've seen inside. I just have nothing on the screen. The backlight works.
>
>
--
http://www.krikor.fr
+33632199413
For Live&Dj bookings contact: cedric@referenceprods.fr