(Topic ID: 169264)

"Bally Theory of Operation" for other boards/companies?

By zacaj

7 years ago



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    #1 7 years ago

    I stumbled across the Bally "Theory of operation" pdf a while ago and had a great time reading it. Does anyone know of any similar writing for other boards or companies?

    #2 7 years ago

    Gottlieb has something similiar for sys 1 and sys 80. There is some WPC documentation as well.

    I just scanned and uploaded some documentation for allied leisure on IPDB (though I'm sure it will only apply to a very limited audience): http://www.ipdb.org/machine.cgi?id=750

    #3 7 years ago

    Do you happen to have links or know the names of any of those? The only other thing I've found is the System 80 service manual (http://arcarc.xmission.com/Pinball/PDF%20Pinball%20Misc/System80%20Service%20Manual.pdf) but it doesn't go into nearly as much detail as the Bally one, and half of it is just explaining the schematic

    #4 7 years ago

    My Rock manual has a four page theory of operation section.

    2016-09-20 11.27.47.jpg2016-09-20 11.27.47.jpg

    #5 7 years ago
    Quoted from zacaj:

    I stumbled across the Bally "Theory of operation" pdf a while ago

    can you post the link to it?

    #7 7 years ago

    That Bally start up sequence is pretty damn amazing. What a great hardware and software design.

    #8 7 years ago

    It's interesting that the Bally document discusses charge current going to the batteries. Did machines from a certain period use rechargeable batteries?

    #9 7 years ago
    Quoted from eli_lilly:

    Did machines from a certain period use rechargeable batteries?

    Yep--1970s to early 1980s. Bally -17/-35,6803; Stern M-100/M-200, Gottlieb Sys 1/80.

    Data east, Sega, Stern, WPC, pin2k, Gottlieb Sys 3 used non-rechargables.

    3 years later
    #10 3 years ago

    actually noticed this document on ebay last week...going to find a PDF

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