34: Phono Input Module PCB Silkscreen

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18-Oct-2019 10:27 PM

Fabian

Fabian

Posts: 102

In the past, several posters had been asking for a clear reference to the components used on the Quad 34 phono input modules. All components on the main PCB are clearly marked (maybe with the exception of C77 and C78, where the polarasiation information is pretty misleading), but there is nothing on the phono input modules.

I myself have been looking for this piece of information for a long time. Even if the PCB is extremely simple for the expert, it is a lot easier to just rely on clear markings when actually working on the piece of gear. So, finally I decided to do it on my own. :-)

This picture is my very own work based on a photograph I took and it is released under the Creative Commons Zero license. This means that anybody (explicitely including DaDa electronics) is free to use, distribute and modify it.


https://abload.de/image.php?img=quad34phonoinputmodulwljb5.png

It is published in the hope of being useful for somebody, but whithout any warranties. No matter what you do to your phono input module, it's your own responsibility.

As mentioned in the picture, the PCB is absolutely identical for all phono modules. I personally own the following Quad 34 modules:
3A 200µV 100Ohm 22nF
3B 100µV 100Ohm 22nF
3C 400µV 100Ohm 22nF
3M 3mV 47kOhm 220pF

I can confirm that all PCBs I own are 100% identical and all are issue 1. I do NOT own any of these (in)famous modules:
3L 1mV 47kOhm 220pF
3H 10mV 47kOhm 220pF

NB: The dutch Quad 34 Mk. II manual lists the input capacitance of 3M and 3H as 200pF, but I am absolutely sure that this is just a typo. The service manual only provides the component values for 3A, 3B, 3C and 3M. If 3L and 3H do really exist, I would be happy to get to know the actual values. And if they really exist, I am still convinced that the PCB layout is the same for those modules as well. :)



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18-Oct-2019 10:36 PM

Fabian

Fabian

Posts: 102

Uhhhh, so sorry. The first version contained an embarassing typo. This is the final link:

https://abload.de/image.php?img=quad34phonoinputmodul77jqu.png

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19-Oct-2019 08:39 PM

Ton

Ton

Posts: 63

Hi Fabian, 

Good work.

I have asked this question two years ago, see this post “Quad 34 disc/phono MM module M12728

Joost sent me this picture with the pcb and components and promised to update the 34 upgrade manual. I think he has forgotten to do that.

 

Perhaps Joost can include his and your picture in the upgrade manual.


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20-Oct-2019 03:01 PM

Fabian

Fabian

Posts: 102

Hi Ton,

Your thread was indeed one of the main reasons. :) The revision manual had not been updated, so I thought this information would still be useful.

I think there is a minor error in Joost’s picture. The labeling of R5/R6 and R9/R10 is reversed. This does not have any practical meaning; the values are all identical anyway.

I am a bit embarrassed to find that I am the only one who doesn’t know how to create actual links in this Forum. :P I cannot even copy-paste text. So how do you create links? HTML? BBCode? Some other trickery?

This is a test …

 

>style>
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20-Oct-2019 03:04 PM

Ton

Ton

Posts: 63

looks like you mastered it :) 

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20-Oct-2019 03:07 PM

Fabian

Fabian

Posts: 102

No really. I just dragged text containing a link from Word. Not elegant. :P
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21-Oct-2019 11:05 PM

Ton

Ton

Posts: 63

Hi Fabian,

 

my method is not very elegant either.

 

I think the dada website is build using “adobe business catalyst”.

 

This tool has, as far as I can tell, two editors, the basic one we see when adding a new post or replying to a post, and an extended version that you can see when you call theforumeditor.

 

Unfortunately I have not been able to call that extended editor when editing a post or replying to a post.

I guess the dada moderators disabled this editor ? So I would like to make a request to enable the extended editor :)

 

There are a few ways to add a link to a post, you discovered one of them.

 

If you look at the extended editor,you can see thefamiliar icons for adding and removing a link.

You don’t see them in the basic editor, but they are there.

 

I’ve been trying to find a shortcut to activate the “Hyperlink Manager”, but no luck yet.

So I use the easy, but not elegant, way of adding a hyperlink.

 

In that plain, basic editor I copy a hyperlink from somewhere on that page, like the “New Blog articles” and paste it in the basic editor.

 

Then, select the whole link, left click on that link and there you are,you see two options, one to start the “Hyperlink Manager” (properties) and another one to remove the link, look at this image.

 

Now you are in the “Hyperlink Manager” and you can change all you want, even add a tooltip or add an email address.

 

I hope one of the forum readers knows how to start/enable the extended editor or to start the “Hyperlink Manager” using a shortcut, that would be the most easy way to add a link :)

 


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22-Oct-2019 06:37 AM

EJP

EJP

Posts: 1669

I don't know what the underlying technology is here, but I've been through the administration screens, and if there is a way to enable a better editor I can't find it. If and when I do I will certainly provde it.
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22-Oct-2019 08:26 PM

Ton

Ton

Posts: 63

Looking at the site my guess is that the dada site is hosted on Adobe Business Catalyst, but I am not familiar with that piece of software.

Adobe Business Catalyst has a configurable WYSIWYG editor, and perhaps we see a subset of the possibilities in the post edit form.

Privileges determines which options you see.

This is explained, and also how to adjust the privilege settings, on this page 

Perhaps the editor we see is limited in its possibilities ? 





 . 


Perhaps the editor we see is limped in its possibilities ? 

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22-Oct-2019 09:20 PM

Fabian

Fabian

Posts: 102

I'm not familiar with Business Catalyst either. Based on the little I read about it so far I surely don't want to touch it. :P

At least in theory there could also be a limitation based on the hosting plan/license payed.

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23-Oct-2019 02:49 AM

EJP

EJP

Posts: 1669

That's the tool but I don't have access to the part that leads to Tools->Online Editor Settings. Stefaan should be reading this thread and it's up to him to fix this.
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23-Oct-2019 10:29 AM

Ton

Ton

Posts: 63

just sent an email to Stefaan to address this.

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24-Oct-2019 10:30 PM

Joost Plugge

Joost Plugge

Posts: 971

As people might have noticed, I am not participating actively in the DaDa organisation anymore, only as a supplier of parts and modules, in this way DaDa can sustain its catalog of high end solutions. The maintenance of the manuals is Stefaan's responsibility.

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