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IndustryArena Forum > MetalWorking Machines > Okuma > Okuma cpu bus alarm 1-1
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  1. #1
    Join Date
    Nov 2022
    Posts
    18

    Okuma cpu bus alarm 1-1

    My mcv4020 w/ osp u10M started having issues booting up, I’d turn it on and off once or twice and it would work, then I started getting the cpu bus alarm, I pulled the board out and the ram cards and reinstalled everything, but now if I try to reinstall software I’m getting the bus alarm, followed with a lot of codes. I got an sc ram card off eBay and swapped it, but still the same thing. I’m having a tough time getting Morris south to look at it, but I need it running.

  2. #2
    Join Date
    Jan 2013
    Posts
    474
    Quote Originally Posted by Cris_co View Post
    My mcv4020 w/ osp u10M started having issues booting up, I’d turn it on and off once or twice and it would work, then I started getting the cpu bus alarm, I pulled the board out and the ram cards and reinstalled everything, but now if I try to reinstall software I’m getting the bus alarm, followed with a lot of codes. I got an sc ram card off eBay and swapped it, but still the same thing. I’m having a tough time getting Morris south to look at it, but I need it running.
    Could be the card rack, pull out everything one by one and inspect the terminals on the card and rack for corrosion or damage, reseat each card several times to wipe contacts clean.

    Then try powering on again and reload data.

  3. #3
    Join Date
    Nov 2022
    Posts
    18
    Quote Originally Posted by servtech View Post
    Could be the card rack, pull out everything one by one and inspect the terminals on the card and rack for corrosion or damage, reseat each card several times to wipe contacts clean.

    Then try powering on again and reload data.
    When you say card rack do you mean the whole row of big boards? I pulled all 3 ram cards off and reseated them

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