Re: Emax II Service manual plea
2009-11-10 by esynthesist
Just FYI: www.musicparts.com are selling the Emax-II service manual as an online PDF. Perhaps a little bit expensive, but I think they are the only source...
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Re: [emax] Re: Emax II Service manual plea
2009-11-10 by jammie
i have the schem here i will take a look ... From: Ted Summers To: Sent: Tuesday, November 10, 2009 8:11 PM
Re: [emax] Re: Emax II Service manual plea
2009-11-10 by Ted Summers
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
Re: Emax II Service manual plea
2009-11-10 by chevytravelleruk
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
RE: [emax] Emax II Service manual plea
2009-11-10 by el macaco
Are you sure it isn t just the key and switch contacts? To: emax@yahoogroups.com From: jammie.emma@blueyonder.co.uk Date: Mon, 9 Nov 2009 14:19:42 +0000
Re: [emax] Re: Emax II RIP?
2009-11-10 by jammie
they are the recomended supplier of them in the us by emu for spare parts for all emu synths and samplers they were very expensive but i see they are now
Re: Emax II RIP?
2009-11-10 by dbaum0000
Answering my own post: I wrote to the company that sells these power supplies, and got a very prompt answer. The power supply is (I m told) a simple 1-1
Re: [emax] Emax II Service manual plea
2009-11-09 by Ted Summers
Talk to Jammie- he is in UK....I believe and does synth / Emax repair. Regards, Ted On Nov 9, 2009, at 5:06 AM, chevytravelleruk wrote: Hi all I have an Emax
Re: Slim Floppy converters
2009-11-09 by Ted Summers
... these are single slot drives only for Emax. and PCMCIA slot must be used . ... Where did you find out I was selling the drives from? IN many emails I sent
Re: [emax] Emax II Service manual plea
2009-11-09 by jammie
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
Emax II Service manual plea
2009-11-09 by chevytravelleruk
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
Re: Memory Upgrades
2009-11-09 by dwv1957
That s only partially right, there are 3 versions of the 93C46 93C46A is 8 bit 93C46B is 16 bit 93C46C is selectable 8/16 bit, and is the only one that
About my Emax II
2009-11-09 by Vladimir Vooss
Hello all, I have recently joined this group, have lurked a bit, and have been impressed by the technical expertise of all the participants in this group on
Re: [emax] Re: Memory Upgrades
2009-11-09 by Ted Summers
I see what you are saying about the pinout, but it looks like there are parts available on ebay for $1 to $7, so its not that expensive to get the real
Re: Memory Upgrades
2009-11-08 by dwv1957
The PALs are on the expansion board, and they are the same for the 4/6/8 meg upgrades, but the 5/7 meg upgrades use different PALs. I have 2 main boards that I
Re: [emax] Re: Memory Upgrades
2009-11-08 by Ted Summers
I am only saying that it might be that you won t get a valid data file out of it due to it being in the board as opposed to being in the IC holder on the
Re: [emax] Re: Memory Upgrades
2009-11-08 by Julian
oooh, I2C eeprom. I just looked about and found the Atmel datasheet for their 93c46, and an old microchip datasheet for their version of the 06/46. If this is
Re: Memory Upgrades
2009-11-08 by esynthesist
A memory upgrade indeed also required sometimes the replacement of the PAL. But... I think the two most common situations today are: 1/ Someone s Emax-II has
Re: Memory Upgrades
2009-11-08 by Everett
I see that there are at least 2 programmed PALs in each memory board upgrade kit inventory. Does anyone know what these chips are and what information they
Re: Memory Upgrades
2009-11-08 by esynthesist
It s a relief to hear it s not a stupid idea after all :-) So I googled on eeprom clip and yes indeed, there seems to be very handy tools out there (and not
Re: [emax] Re: Memory Upgrades
2009-11-08 by Ted Summers
There are clips manufactured for this purpose, actually. My concern would be whether you would get corrupted data in circuit. and if you had a bad one, I would
Re: Memory Upgrades
2009-11-08 by esynthesist
Maybe it s the most stupid idea launched on this board (mea culpa) but I was wondering whether an eeprom programmer can be connected to the 9306 on the Emax-II
Re: [emax] Re: Memory Upgrades
2009-11-08 by Ted Summers
Well, I don t have an Emax 2, but I believe i can safely remove and re- install the 9306 This chip is actually a National Semiconductor 93C06. its current 8
Re: [emax] Re: Memory Upgrades
2009-11-08 by Laurent/LIFELIKE
Sounds very dangerous to perform that desoldering. Maybe we should simply try to enter the Diagnostics submenu adjust features that contains a kind of
Re: Memory Upgrades
2009-11-08 by Everett
I m curious, but maybe not THAT curious. I can t find those chips anywhere either. It s only an 8 pin DIP though, so I have plenty of those sockets lying
Re: Memory Upgrades
2009-11-08 by tristanupton
You need the remove 9306 EEPROM, its a small 8 pin chip soldered to the main board and designated IC24. You will need to desolder this chip to read in your
Re: Memory Upgrades
2009-11-08 by Everett
I can try to do this, but I m a little nervous about killing my box. If somebody can do a little more leg work before I crack into the hardware I would feel a
Re: [emax] Re: Memory Upgrades
2009-11-08 by tu@...
The 9306 EEPROM also has a bit (or bits) that determine whether the Emax II has stereo or mono sampling capability. So you need to match that as well as the
Re: Memory Upgrades
2009-11-08 by dwv1957
That makes more sense,I have never heard of the 27C64 being reprogrammed in circuit. If anyone has a 6 or 8 meg machine, and can read the eeprom, send me the
Re: [emax] Re: Memory Upgrades
2009-11-08 by Laurent/LIFELIKE
Must be that eeprom, because on later E4x models, this eeprom is the word that appears and that can be reinitialized from the secret menu without that damn
Re: Memory Upgrades
2009-11-07 by esynthesist
I thought these configurations parameters (memory size, calibration settings, ...) are written to the 9306 eeprom instead of the two normal eproms. So I guess
Re: Memory Upgrades
2009-11-07 by dwv1957
It is quite simple, and should work if the EmaxII writes this info to the eproms, but it may write it to one of the PALs. The emaxII uses 2-27C64 eproms, I
Re: [emax] Re: Memory Upgrades
2009-11-07 by Laurent/LIFELIKE
Hi Everett If you could do that if would be great, how does this process work ? Sent from an iPhone ... [Non-text portions of this message have been removed]
Re: Memory Upgrades
2009-11-07 by Everett
If I understand correctly, these are special floppies that are basically extinct. I have a fully loaded EMAXII if there is a way to copy EPROMS I can probably
Re: [emax] Re: Emax II RIP?
2009-11-07 by Daniel Baum
You mean this one? http://www.eprelectronics.com/store/html/Products/E-mu-Keyboards-PARTS/E-mu-Emax/Power-supply-Emax-Darwi-68.html If this is the right type,
Re: [emax] Memory Upgrades
2009-11-07 by Laurent/LIFELIKE
Im looking for one of those as well, my Emax lost his memory last week after a cleaning session, very hard to find ZD413 floppies... Sent from an iPhone ...
Re: [emax] Re: Emax I and Turbosynth
2009-11-07 by Laurent/LIFELIKE
Hey sounds interesting, i got the same version than Mr. Esynthesist but got a lot of programm and exemple i grabed from a v1.0. I would be i interested in
Memory Upgrades
2009-11-07 by dwv1957
Does anyone know where I could get copies of the memory install disks (if they still exist) I have 2 memory expansion boards and a box of ram chips, and would
Re: Emax I and Turbosynth
2009-11-07 by roberth909
Yah! Happy Emax 1! Turbosynth works now, I had to get an RS422 cable from Emulator Archive, the one I wired up was not working for some reason, didn t realize
Re: [emax] Re: Emax II RIP?
2009-11-07 by jammie
find out how much its going to cost for parts and labour as you can get a brand new psu thats going to cast about the same or less ... From: Daniel Baum To:
Re: [emax] Re: Emax II RIP?
2009-11-06 by Daniel Baum
This one seems to be for the Emax II, and it s cheaper.
Re: [emax] Re: Emax II RIP?
2009-11-06 by mr julian
woah... that s one expensive capacitor kit.
Re: [emax] Re: Emax II RIP?
2009-11-06 by Daniel Baum
Thanks everyone. It seems we have a diagnosis. I won t be doing this myself, but it might be better if I get the right parts and find someone just to do the
Re: [emax] Re: Emax II RIP?
2009-11-06 by emax2@...
This might help
Re: Emax II RIP?
2009-11-06 by chevytravelleruk
get the PSU re-capped then.. it s probably just the startup cap that s gone, but if you are taking the supply out then you may as well replace them all.. it s
Re: [emax] Re: Emax II RIP?
2009-11-06 by jammie
thats an auto switching supply board you have the later model of psu ... From: Daniel Baum To: emax@yahoogroups.com Sent: Friday, November 06, 2009 6:02 PM
Re: [emax] Re: Emax II RIP?
2009-11-06 by Daniel Baum
Thanks everyone for the help. Here is my power supply: http://www.type34.info/temp/My%20equipment/mini-IMG_2539.JPG D. [Non-text portions of this message have
Re: [emax] Re: Emax II RIP?
2009-11-06 by jammie
you can tell if its the switch mode psu as on the 1,s that are not have a set of red wire going to a switch at the back of the ,machine for setting us voltage
Re: [emax] Re: Emax II RIP?
2009-11-06 by Ted Summers
On the power supply itself my Emax has a 3 pin white header connector (2 wires are populated in the connector- brown and blue). The connection was bad there.
Re: Emax II RIP?
2009-11-06 by chevytravelleruk
Am I right in thinking that some Emax IIs shipped with Switch mode PSUs?.. that s what this sounds like to me, a switch mode PSU not firing up to the correct