Fixed! Had to replace IC 14, IC 20, and IC 21 Chips. Works great now.

--- In YamahaDX@..., "Jim Atwood" <photoshootjapan@> wrote:

Hello!

I'm curious if this problem was ever solved. I picked up a DX-7 today which I got for free and it has a similar problem. When powered on, it says 88. Memory Protect Cartridge On. It's stuck and none of the buttons work.

Thanks.

Jim

--- In YamahaDX@..., "nashoo" <nash00_ion@> wrote:

I have measured the batterys voltage, it shows 3v. It shoul be ok.

--- In YamahaDX@..., "uldiszemzars" <uldiszemzars@> wrote:

Just replace battery

--- In YamahaDX@..., "nashoo" <nash00_ion@> wrote:

I have started the dx without the connections between the buttons and the moterboard. It's the same, the problem remains. So the buttons panels are ok. Im means that it can be a firmware problem ?

--- In YamahaDX@..., Florian Anwander <fanwander@> wrote:

hello

Am 29.08.2011 16:47, schrieb nashoo:

It shows someting like "27" (i believe some digits are not working), but on the screen it shows "Memory protect cardridge on". I have checked the button, but it is not stucked, it works ok. No ideea what could be wrong. I have also checked the connections between the buttons pannel and mainboard, and they seemed to be allright.

I don't know whether the firmware of the DX works without the panel
buttons, but it might be worth a try to boot WITHOUT a connection
between the panel and the mainboard.

If it starts fine without the panel, you know that the panel pcb is
somehow corrupted.

Florian

----- Original Message -----

From: Martin Tarenskeen

To: YamahaDX@...

Sent: Wednesday, September 14, 2011 6:29 AM

Subject: Re: [YamahaDX] Re: DX-7IIFD support

?

On Tue, 13 Sep 2011, jammie.emma@... wrote:

> also i use the dx convert software for python from the files section it allows me to converyt
> 4op patches to and vise versa from dx7 to 4 op

DXconvert can do a lot of things, but converting dx7 to 4-op is NOT one of
them. It can only convert 4-op to dx7 (6-op)

--

MT

---

No virus found in this incoming message.
Checked by AVG - www.avg.com
Version: 9.0.914 / Virus Database: 271.1.1/3895 - Release Date: 09/13/11 19:35:00

I have an EPROM Burner which can read, burn, copy pretty much all of the
standard EPROMs from this era of synths. In fact, I just burned me an update
for my TX802 unit from v1.2 to v1.3 as well as changing out the Wave EPROM
to a differently programmed one (that I found online) so that I could have a
completely different set of A and B banks instead of the original stock
ones. In fact, I've been desparately trying to find the elusive v1.5 TX802
EPROM binary but with no luck. It's been mentioned here on the various Yahoo
groups but nobody ever uploaded to any of the groups (that I have seen).
Anyways, back to the point, I would be more than happy to copy and put
online all of the different versions for all of these EPROMs from all of the
different synths, the only hitch is, people would have to pull them out and
send them to me (and I would send them back) for all of the versions that we
did not currently have to share. As far as devices go, I have 2 for the
TX802: v1.2 and v1.3 and for the TX81Z I have v1.0, v1.3, v1.4, v1.5 and
v1.6. My DX7 version is kind of a moot point as I have a SuperMax card
installed in it which replaced whatever version EPROM was in there before.
But I would definitately be willing to help out in that regard.

Troy

_____

From: YamahaDX@... [mailto:YamahaDX@...] On Behalf
Of Pablo H Molina Leyton
Sent: Saturday, March 26, 2011 3:34 PM
To: YamahaDX@...
Subject: [YamahaDX] Re: IG114690 - no longer available




Me too.
That turns to the point we were discussing on the other thread. I would like
to have an archival copy of my ROM, so if I ever damage it, I can replicate
it on a EPROM or PROM.
If anyone has a EPROM reader that would be kind enough to read the memory
contents of the ROM and share it via Megaupload or similar, it would be
great.

--- In YamahaDX@... <mailto:YamahaDX%40yahoogroups.com> ,
"Trevor" <SHarrier@> wrote:

that's right - that's according to the Yamaha parts website. Can someone

provide me with a rip of their rom of this particular part?

Fixed! Had to replace IC 14, IC 20, and IC 21 Chips. Works great now.

--- In YamahaDX@..., "Jim Atwood" <photoshootjapan@> wrote:

Hello!

I'm curious if this problem was ever solved. I picked up a DX-7 today which I got for free and it has a similar problem. When powered on, it says 88. Memory Protect Cartridge On. It's stuck and none of the buttons work.

Thanks.

Jim

--- In YamahaDX@..., "nashoo" <nash00_ion@> wrote:

I have measured the batterys voltage, it shows 3v. It shoul be ok.

--- In YamahaDX@..., "uldiszemzars" <uldiszemzars@> wrote:

Just replace battery

--- In YamahaDX@..., "nashoo" <nash00_ion@> wrote:

I have started the dx without the connections between the buttons and the moterboard. It's the same, the problem remains. So the buttons panels are ok. Im means that it can be a firmware problem ?

--- In YamahaDX@..., Florian Anwander <fanwander@> wrote:

hello

Am 29.08.2011 16:47, schrieb nashoo:

It shows someting like "27" (i believe some digits are not working), but on the screen it shows "Memory protect cardridge on". I have checked the button, but it is not stucked, it works ok. No ideea what could be wrong. I have also checked the connections between the buttons pannel and mainboard, and they seemed to be allright.

I don't know whether the firmware of the DX works without the panel
buttons, but it might be worth a try to boot WITHOUT a connection
between the panel and the mainboard.

If it starts fine without the panel, you know that the panel pcb is
somehow corrupted.

Florian

Hello!

I'm curious if this problem was ever solved. I picked up a DX-7 today which I got for free and it has a similar problem. When powered on, it says 88. Memory Protect Cartridge On. It's stuck and none of the buttons work.

Thanks.

Jim

--- In YamahaDX@..., "nashoo" <nash00_ion@> wrote:

I have measured the batterys voltage, it shows 3v. It shoul be ok.

--- In YamahaDX@..., "uldiszemzars" <uldiszemzars@> wrote:

Just replace battery

--- In YamahaDX@..., "nashoo" <nash00_ion@> wrote:

I have started the dx without the connections between the buttons and the moterboard. It's the same, the problem remains. So the buttons panels are ok. Im means that it can be a firmware problem ?

--- In YamahaDX@..., Florian Anwander <fanwander@> wrote:

hello

Am 29.08.2011 16:47, schrieb nashoo:

It shows someting like "27" (i believe some digits are not working), but on the screen it shows "Memory protect cardridge on". I have checked the button, but it is not stucked, it works ok. No ideea what could be wrong. I have also checked the connections between the buttons pannel and mainboard, and they seemed to be allright.

I don't know whether the firmware of the DX works without the panel
buttons, but it might be worth a try to boot WITHOUT a connection
between the panel and the mainboard.

If it starts fine without the panel, you know that the panel pcb is
somehow corrupted.

Florian

----- Original Message -----

From: David Robinson

To: YamahaDX@...

Sent: Tuesday, September 13, 2011 10:20 PM

Subject: Re: [YamahaDX] Re: DX-7IIFD support

?

Thanks guys. ?I guess I need to do some shopping (and a bit of learning). ?I've been telling myself that every so often, ever since I got the first DX over ten years ago.

I know the files are available here on the web. ?I've got USB and firewire ports out the you-know-what. ?Is there an interface that works going either of those routes? ?And is there a librarian program that's freeware (or at least cheap enough that my wife won't scream about the price) available that will work with Windows 7?

Obviously, I'm trying to do this as inexpensively as possible and without a whole bunch of experimentation. ?Any help or suggestions, as I said, would be greatly appreciated.

---

From: Francis Cote
To: YamahaDX@...
Sent: Tuesday, September 13, 2011 10:06 AM
Subject: Re: [YamahaDX] Re: DX-7IIFD support

?

Hi David,

Whatever cardtridge you have must be available in sysex somewhere on the net. Then do a MIDI dump from your PC, if you have a MIDI port.

I don't see how else you are going to do that, other than investing on some adaptor.

My Tx-802 takes any Dx7 patches I send it. I don't see any problems doing the same with your DX7II. I'm not home, but I'll take a look at my library. There was a time I was download just about everything I could find...

Francis

On Tue, Sep 13, 2011 at 9:43 AM, metatone_2000 <jason_ralf808@...> wrote:

?

Hi david,

Looking at my TX802 manual which is a DX7II in a rack you can read (but not write) original DX7 carts with the addition of an adaptor called the ADP1 ,so might be worth trying to find one of these on ebay or such.I hope this helps.

Jason

--- In YamahaDX@..., "David" wrote:
>
> As I posted in another thread, my original DX is flaking out on me. BUT our sax player is selling me his DX-7IIFD for $300. The onboard voice library has been changed. I need some good Hammond-ish organ sounds. I have some on my old carts, but they're not compatible with the DX7-II. None of the computers in our house have a floppy, all are running Windows 7, and to make matters even worse, none have the old port that I tried, albeit unsuccessfully, to load sounds into my old DX with. Can anybody help me?
>

---

No virus found in this incoming message.
Checked by AVG - www.avg.com
Version: 9.0.914 / Virus Database: 271.1.1/3894 - Release Date: 09/13/11 07:35:00

As I posted in another thread, my original DX is flaking out on me. BUT our sax player is selling me his DX-7IIFD for $300. The onboard voice library has been changed. I need some good Hammond-ish organ sounds. I have some on my old carts, but they're not compatible with the DX7-II. None of the computers in our house have a floppy, all are running Windows 7, and to make matters even worse, none have the old port that I tried, albeit unsuccessfully, to load sounds into my old DX with. Can anybody help me?

Hi Dave,

I uploaded a photoshopped picture to the photos area of the group detailing the engineering specs for these Panasonic EWANF style slide pots. The album name is DX7 and DX27 Volume and Data Pots. These are 10k ohm single pots and the volume is a log taper and the data is linear. Click on "original" to expand the drawing to full size to view all the details and dimensions.

Now for the bad news... I've never been able to find them as they are obsolete. If anyone knows of a source please (DX7 sound) chime in.

Hope this helps, Fran

P.S. I have seen where DX's were parted out on Ebay but there you're dealing with pot luck... They may be good or bad if you even find them at all. :-)

--- In YamahaDX@..., "David" <gitfiddl@> wrote:

My old trusty DX-7 is showing signs of wear. I'm in need of new volume and data entry faders. Does anyone know of a source for those parts? The volume I can deal with using an external control, but the data entry fader is so bad and glitchy it's impossible to tune.

My old trusty DX-7 is showing signs of wear. I'm in need of new volume and data entry faders. Does anyone know of a source for those parts? The volume I can deal with using an external control, but the data entry fader is so bad and glitchy it's impossible to tune.

Hello!

I'm curious if this problem was ever solved. I picked up a DX-7 today which I got for free and it has a similar problem. When powered on, it says 88. Memory Protect Cartridge On. It's stuck and none of the buttons work.

Thanks.

Jim

--- In YamahaDX@..., "nashoo" <nash00_ion@> wrote:

I have measured the batterys voltage, it shows 3v. It shoul be ok.

--- In YamahaDX@..., "uldiszemzars" <uldiszemzars@> wrote:

Just replace battery

--- In YamahaDX@..., "nashoo" <nash00_ion@> wrote:

I have started the dx without the connections between the buttons and the moterboard. It's the same, the problem remains. So the buttons panels are ok. Im means that it can be a firmware problem ?

--- In YamahaDX@..., Florian Anwander <fanwander@> wrote:

hello

Am 29.08.2011 16:47, schrieb nashoo:

It shows someting like "27" (i believe some digits are not working), but on the screen it shows "Memory protect cardridge on". I have checked the button, but it is not stucked, it works ok. No ideea what could be wrong. I have also checked the connections between the buttons pannel and mainboard, and they seemed to be allright.

I don't know whether the firmware of the DX works without the panel
buttons, but it might be worth a try to boot WITHOUT a connection
between the panel and the mainboard.

If it starts fine without the panel, you know that the panel pcb is
somehow corrupted.

Florian

When you install a Grey matter card, you have to initialize the memory. The RAM, being empty, has garbage in it which will give those display symtoms. Double check your wiring, as well.......??I bel the two wires are the read/write or chip select??lines for the new E! RAM, taken from the original DX7 RAM socket ( which is a different RAM pinout and capacity- larger). You have to hold down two buttons while powering up, to reset the RAM, ??try 1 and 17, or 1 and 32, 16 &32 ? ( you need three hands), then you have to load in sounds bank by bank, if my memory of this is accurate- it's been ale.. You may also get an Intitialise- YES/NO? message, after this reset. The grey matter instructions are found online and they are always a pain to install as the instructions are very poor.
By the way I have a Grey Matter E! kit for DX7 II F and FD for sale with instructions, if anyone is interested.
Cheers,
Gregg




??

--- On Sun, 1/2/11, Nicolas Finn <nicolasfinn@...> wrote:


From: Nicolas Finn <nicolasfinn@...>
Subject: Re: [YamahaDX] DX-7 MKI Grey Matter E! board problem
To: YamahaDX@...
Received: Sunday, January 2, 2011, 11:28 AM


??




Hello Jim !
I wish you a happy new year, and I hope that you'll finaly succed to install properly your Grey Matter E! board.
I am interested by this special card and I get attention to all informations about how to find one, how much it cost, and the most important : how to install it properly.
Would you inform me of your progress and also tell me how did you pay for your card, and at whom did you buy it !
If I find some good information about the installing of the Grey Matter E! card I will tell you.
I wish success in your works !
Nicolas

----- Original Message -----
From: Jim Atwood
To: YamahaDX@...
Sent: Sunday, January 02, 2011 10:51 AM
Subject: [YamahaDX] DX-7 MKI Grey Matter E! board problem

??

Hello everyone!

First Happy New Year from Japan.

This evening I tried installing a Grey Matter E! board into my newly acquired used Yamaha DX-7 MKI. The Serial Number is 96982, but I am not sure how to check the OS version number. I believe my DX-7 is ok for installing the Grey Matter E! board but am not %100 sure.

I recently bought the Grey Matter E! board off Ebay. It arrived just fine but I noticed while doing the installation that two "long" screws needed to clamp down the E! board were not sent to me, but I improvised by finding a couple of screws in my spare parts box.

The issue here is that I followed the directions by extracting the two IC chips ( Rom IC14 and Rom IC21 ). I then soldered the red wire to IC63 Pin #7 and the black wire to IC63 Pin #10. I then seated the E! board into the appropriate IC14 and IC21 slots. I was able to do all of this just fine and I thought the board was "snug" enough to warrant turning on the DX-7 for a test run.

Well, after powering up the DX-7, I noticed that I got power but there was no display and the numbers .8 and .68 for example were flickering on and off. It was like there was a short or conflict in the system. I tried re-soldering the wires (carefully!) and re-seating the E! board several times and every time the same thing happened. ( Note I turned off and unplugged everything of course before trying different things ... laugh ).

Thus I was unable to get the Grey Matter E! board to install properly.

One thing I thought of while writing this post is that the when facing the DX-7 ( as if you are going to play the keys ), the IC chips themselves are upside down. My thinking now is that perhaps I soldered the red and black wires opposite of what they should be. IC63 is actually upside down meaning the lettering on the chip itself is upside down. Thus there is hope that if I try this again later in the week, that perhaps that might be the problem. My wires may have been crossed.

Otherwise for now, I re-installed the old chips and restored the voices using DX Manager without any issues. The Yamaha DX-7 works fine, but I just can't seem to understand why the Grey Matter E! board will not work properly.

I will try to find an image on Google ( if lucky ) showcasing the Grey Matter E! board already installed and see how those red and black wires are soldered. If lucky they will be the opposite of what I did. Otherwise ... trash the Grey Matter E! board!! LOL

This was just a small weekend challenge to see if I could add some stuff to the DX-7. If it doesn't work, all is not lost as I will enjoy the stock DX-7 no problem.

If anyone has any other ideas or if you recognize my problem, please let me know.

Thanks!!

Jim

Just an update:

I consulted the manual and noticed that the IC63 chip was oriented a certain way with an indentation on the right side. I can verify that I indeed had the red and black wires soldered correctly. Thus it appears I either made an error somewhere with my soldering or seating the board. It's also possible that the Grey Matter E! board is defective and no longer working properly. I soldered the wires carefully three different times and got the same result. The Grey Matter E! board seemed to also be seated firmly in the sockets as far as I could get them, but I did notice that the screw casing were a bit long. I felt the pins could go deeper if I didn't have the screw casing attached to the E! board. It would be difficult to pry those off though. Still, it should be been seated properly enough I thought, but I could be wrong.

I have no idea how to diagnose the problem at this point so unless I find an angle to test things, I'll probably just file away the Grey Matter E! board and keep the DX-7 stock as it works perfectly and sounds great as is. I don't think I could sell it as I'm unsure at this point whether it works and wouldn't want sell a defective board understandably. Oh well!

Thanks!

Jim

Hi all,

I have two DX-7's, which both have the same exact problem.
Upon turning them on, they both hang up while first loading, and get
stuck with the "YAMAHA DX7 SYNTHESIZER" LCD readout and the red
numeric readout: "88" both stuck on.
They rarely proceed on to the fully loaded stage, where I can play the
instrument.

Because I have TWO DX-7s with the same problem, I'm assuming that this
is a COMMON problem, but I have not found any mention of this ailment
in the archives or online.

My repair tech was clueless, when I described this problem to him.
My power source is just fine, and stable, by the way.

Help!

If you'd respond directly to "dana@...", I'd appreciate
it, as I rarely check this group.

Best,


**

Announcing a special concert of Jean-Jacques Perrey and Dana
Countryman at the NuMusic Festival in Stavanger, Norway on Sept. 7th,
2007.