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 Forum index » Clavia Nord Modular » Nord Modular G2 Discussion
"circuit diagram" for Nord Modular G2 ?
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FaschingsPrinz



Joined: Aug 24, 2010
Posts: 28
Location: Vienna
G2 patch files: 4

PostPosted: Tue Apr 03, 2012 12:45 am    Post subject: "circuit diagram" for Nord Modular G2 ?
Subject description: broken USB-connector ? measuring where / what / how ?
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Dear friends,

Now it struck me too!
No USB-connection!
Nord G2 Keyboard 1.62 on a Windows XP SP3 laptop.

I read here in this forum that re-soldering the USB-connector may help. Since I´ve never done a thing like that, I brought the G2 to a colleague of mine who´s capable of doing things like that; But he´s no musician and has never had something to do with synthesizers.

He told me he already measured everything but can´t find any broken connections. He connected the G2 to his computer, but nothing happened too (no query for required drivers etc.).
But to be sure he asked me if I can bring him a circuit diagram so he can dig deeper with his measuring without having to guess so much.

Does anybody possess a circuit diagram of a Nord Modular G2 (keyboard) and would be willing to send it to me ?

THANX a LOT in advance,
Markus

keeping my fingers crossed!

_________________
"If I have an apple, and you have an apple, and we exchange apples, then you and I still have ONE apple.
But if I have an idea, and you have an idea, and we exchange ideas, then we BOTH have TWO ideas."
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Roland Kuit



Joined: Sep 29, 2003
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PostPosted: Tue Apr 03, 2012 1:17 am    Post subject: Reply with quote  Mark this post and the followings unread

Re-soldering is for a broken USB. Or worn out one. I have to do this shortly. Sometimes it seems if a routine is stuck in the G2. A way is to 'reset' the thing by pressing 10 times on/off. Hope this helps.
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FaschingsPrinz



Joined: Aug 24, 2010
Posts: 28
Location: Vienna
G2 patch files: 4

PostPosted: Tue Apr 03, 2012 8:48 am    Post subject: Reply with quote  Mark this post and the followings unread

Posted Image, might have been reduced in size. Click Image to view fullscreen. .. aah, .. "the IT crowd"-trick ? sun-spots anybody?
No, I haven´t done that yet.
Will try it, but will also try [PERFORMANCE MODE]+ [PATCH LOAD] during startup, which I found here somewhere too.
I saw you had the same problems once upon a time.
How did you solve it ?

Markus

_________________
"If I have an apple, and you have an apple, and we exchange apples, then you and I still have ONE apple.
But if I have an idea, and you have an idea, and we exchange ideas, then we BOTH have TWO ideas."
G.B.SHAW
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Roland Kuit



Joined: Sep 29, 2003
Posts: 1091
Location: The Netherlands/Sweden
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G2 patch files: 127

PostPosted: Tue Apr 03, 2012 9:39 am    Post subject: Reply with quote  Mark this post and the followings unread

I had it 2 times and yes, it solved my problem. Jan Punter tipped this off. Good luck!
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Estarriol



Joined: Aug 09, 2011
Posts: 39
Location: Moscow

PostPosted: Wed Apr 04, 2012 9:31 pm    Post subject: Reply with quote  Mark this post and the followings unread

As far as I know, there are no circuit schemes of NMG2. Maybe the guy at Encore electronics who made a new expansion board could make one coz' he had no problem examining the original expansion.

Dyuing USB chips is a common problem. What's worse, the corresponding USB chip "ISP1181BDGG" is marked as obsolete at Mouser, so finding one could be a problem.
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FaschingsPrinz



Joined: Aug 24, 2010
Posts: 28
Location: Vienna
G2 patch files: 4

PostPosted: Wed Apr 04, 2012 11:41 pm    Post subject: Reply with quote  Mark this post and the followings unread

Estarriol wrote:
Quote:
Dyuing USB chips is a common problem


Is there a way to find out if it´s my USB-chip that died, or something else ?
How can I separate the possible sources for my broken USB-connection ?
Is there an indicator which will tell me (measuring) that it´s the chip that died ?

_________________
"If I have an apple, and you have an apple, and we exchange apples, then you and I still have ONE apple.
But if I have an idea, and you have an idea, and we exchange ideas, then we BOTH have TWO ideas."
G.B.SHAW
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voltage control



Joined: Mar 11, 2010
Posts: 5
Location: another world

PostPosted: Thu Apr 05, 2012 8:33 am    Post subject: Reply with quote  Mark this post and the followings unread

You can measure for continuity between the 4 connectors in the usb port and points on the circuit board that the corresponding usb port pins lead to. If these connections prove to be in order, and your computer does not "see" the G2, there is a good chance that the usb chip will have to be replaced.
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Baby



Joined: Apr 24, 2006
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PostPosted: Thu Apr 05, 2012 6:19 pm    Post subject: Reply with quote  Mark this post and the followings unread

http://www.datasheetcatalog.org/datasheet2/e/0zqflkq25g93q2d9wx1iei08zs3y.pdf

Check for proper voltages on the proper pins. If any are grounded out, it's dead.

http://www.stericsson.com/technical_documents/CD00222753.pdf

Useful info.

http://www.canics.com/searchresult.php?search_db=true&part=ISP1181B&multi-Search=Multi-Search&source=chipcatalog

Supplier(?)

You'll need skillz to replace it...
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General Elektrick



Joined: Apr 06, 2004
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PostPosted: Fri Apr 06, 2012 7:18 am    Post subject: Reply with quote  Mark this post and the followings unread

Hi,

I had a lightning strike destroying my USB connection on the G2. I got help for around 250 € here:

http://www.synthesizerservice.de/

For this prize they replaced a led display as well which did not lit up. Pretty fair price. recommended by me...

Greets,
Chris aka general elektrick

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General Elektrick

"If something is boring after two minutes, try it for four. If still boring, then eight. Then sixteen. Then thirty-two. Eventually one discovers that it is not boring at all." --John Cage.
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Estarriol



Joined: Aug 09, 2011
Posts: 39
Location: Moscow

PostPosted: Thu May 03, 2012 6:32 am    Post subject: Reply with quote  Mark this post and the followings unread

A circuit diagram for NMG2 is a big thing. It basically requires reverse engineering the hardware, which equals time & skill. I'm currently trying to reverse G2 display board schematics because it has no DSP on board AFAIK. But it still requires bill of materials to be made, all of the electrical connections between components on the board (node list, sometimes called a net list) to be identified and so on.
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FaschingsPrinz



Joined: Aug 24, 2010
Posts: 28
Location: Vienna
G2 patch files: 4

PostPosted: Wed Sep 18, 2013 4:47 am    Post subject: broken USB-connection @G2 = REPAIRED ! Reply with quote  Mark this post and the followings unread

..by the way.

I followed #General Elektrick 's advice and did contact "SynthesizerServiceDepartment".
If you do so, you get an email with an identification-number; pack your synth and write this number on the box and send it there (clever way of handling).
After a week I received a quote, two more weeks later I got my G2 back repaired.
It did cost around 250Euro.
According to SynthesizerServiceDepartment the reason is electrostatic charge when plugging the USB-cable.
The repair he did to the USB-connector did cure this too, so it should never happen again.
I´m HAPPY

_________________
"If I have an apple, and you have an apple, and we exchange apples, then you and I still have ONE apple.
But if I have an idea, and you have an idea, and we exchange ideas, then we BOTH have TWO ideas."
G.B.SHAW
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