Help needed with power supply pinout for PC2X/PC2R (PM0025-001)

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Hi, I`m trying to build a replacement unit since I`ve lost my original PSU for PC2X.
I`m looking for someone with original PM0025-001 so he could measure the output with DVM and tell which pins have +9V/-9V and 14V
 

happyrat1

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Contact Kurzweil Support.

They’re excellent at providing legacy support for DIY repairs.

Kurzweils are like Subarus.

Their longevity is their best endorsement.

Gary. ;)
 

happyrat1

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Just visit their website and follow the links.

I’m on my phone and can’t do it for you.

Gary. ;)
 
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my search came up with these two options: (e-mail address removed) or (e-mail address removed).
Are they even close?​

 

happyrat1

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The Kurzweil link is bang on.

The other might be a local distributor.

They might not handle legacy products.

There are also used parts places on the web who might have one in stock and don’t forget to check EBay.

Gary ;)
 

happyrat1

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Item is listed here as out of stock but you can add yourself to a waiting list.


They might be able to provide a pinout as well.

Gary ;)
 

happyrat1

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Here's one for sale in stock for ridiculous money.


(if all else fails.)

Gary ;)
 

happyrat1

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Why not open up the keyboard and do a little detective work?

Voltages should b e silkscreened on the circuit boards.

Gary ;)
 
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Voltages should b e silkscreened on the circuit boards.
well, except they are not :oops:
The whole point is to eliminate the guesswork.
 

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You may try to find them by the schematics
Search "service manual pc2x" by google and you will find them
 
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The service manual is exactly the source of my concerns: pin numbering of the Krycon connector there totally contradicts the numbering scheme of the Krycon ltd. itself. Like according to Krycon pins go clockwise as 3-1-2-4 but Kurzweil lists them as 3-4-1-2
 

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The service manual is exactly the source of my concerns: pin numbering of the Krycon connector there totally contradicts the numbering scheme of the Krycon ltd. itself. Like according to Krycon pins go clockwise as 3-1-2-4 but Kurzweil lists them as 3-4-1-2
Krycon or Kycon ?
I just find Kycon: https://cloud.kycon.com/website/index.html

Do you know if PM0024-001 (9Vdc - 1,75A) is the same of PM0025-001 ?
 
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Yep, definitely Kycon KPPX-4P.
Thanks, have seen that topic.
Firstly that guy has a faulty PSU, secondly and more importantly according to his observation the Kurzweil schematics counts the pins in wrong order (but mysteriously all the other stuff like voltage regulators uses manufacture`s pin assignment) and rotates the voltages on the connector to 180 degrees. o_O So I really need a second opinion from another actual PSU owner.
As for PM0024-001 vs PM0025-001 the label and connector look identical (both dual voltage 9DC and 14AC) so they are probably the same thing. :cool: Maybe? ;)
 
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Yep, definitely Kycon KPPX-4P.
Thanks, have seen that topic.
Firstly that guy has a faulty PSU, secondly and more importantly according to his observation the Kurzweil schematics counts the pins in wrong order (but mysteriously all the other stuff like voltage regulators uses manufacture`s pin assignment) and rotates the voltages on the connector to 180 degrees. o_O So I really need a second opinion from another actual PSU owner.
As for PM0024-001 vs PM0025-001 the label and connector look identical (both dual voltage 9DC and 14AC) so they are probably the same thing. :cool: Maybe? ;)
I found PM0024 is for 230 Vac, PM0025 for 120 Vac
In Italy we have 230 Vac

I am still investigating about pinout
 

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