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IMS MM1 Minibus ORG Ver 2.0 - how to finish KiCad 10.0.3 PSU board mod?

Keith1914 75 0
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  • Need exact PSU rails and pinout details

    #1 21935166
    Keith1914
    Level 1  
    Posts: 1
    I have an old computer from the early nineties.

    IMS MM/1

    We have some of the schematics but not others.

    I have KiCad 10.0.3.

    In the ZIP file, I am trying to add to the ORG Ver. 2.0 Minibus board.

    Here is the ORG that I modified for a newer PS.

    I don't have the build completed yet. Need help.

    Screenshot of 3D Viewer showing a green PCB labeled “MM/1 Minibus Ver 3.0.3” with connectors and ICs.
    Screenshot of KiCad schematic editor with wiring and “Global Label Properties” dialog for label A11 Schematic editor screenshot with signal wiring and “Global Label Properties” dialog for label A3
    “Minibus V2.0” PCB with IC chips, connectors, and a bundle of colored wires on a table

    PCB labeled “Minibus V2.0” with wires and connectors on a blue-and-white cloth

    Can you upload or show the KiCad project/schematic/PCB files and say exactly what part is not completed yet - schematic, PCB routing, footprints, ERC/DRC errors, or build/export files?
    In the PCB Editor, I don't have all the wires drawn out.
    What newer power supply are you trying to use, and what are its voltage rails, connector pinout, and required changes from the original IMS MM/1 Minibus PSU design?
    PSU from the last 10 years.
    Attachments:
    • MM-1 Minibus Ver 2_0 with 8Meg - BOM.pdf (166.57 KB) You must be logged in to download this attachment.
    • Newest7v8.zip (773.66 KB) You must be logged in to download this attachment.
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