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IndustryArena Forum > Machine Controllers Software and Solutions > Fanuc > No. "8" shown on the LED status display -- FANUC Series Oi Mate-MB Controller

Thread: No. "8" shown on the LED status display -- FANUC Series Oi Mate-MB Controller

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  1. 07-03-2017, 09:10 AM #1
    pmanoj
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    No. "8" shown on the LED status display -- FANUC Series Oi Mate-MB Controller

    Hello,

    I use FANUC Series Oi Mate-MB Controller for my machining center. I have encountered a problem after powering up. The monitor showed nothing and the keypad did not light up. I looked behind to check the indicator lights (please see attached photos for more details). There were 4 green lights and 1 red light on. The LED status display showed "8". I'm looking for an explanation as to why this happened and how I can troubleshoot this problem.

    Big thanks in advance.

    Best Regards,
    pmanoj
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  2. 07-03-2017, 02:24 PM #2
    jacof
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    Re: No. "8" shown on the LED status display -- FANUC Series Oi Mate-MB Controller

    That fault normally indicate that the main board did not ""Boot"" up.
    The only way to rectify is to replace the main board
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  3. 07-07-2017, 05:28 AM #3
    pmanoj
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    Re: No. "8" shown on the LED status display -- FANUC Series Oi Mate-MB Controller

    Thank you for your answer, jacof.
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  4. 01-03-2024, 12:16 PM #4
    catur4widhi
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    ROM/sram card is not seat properly, dont remove the sram card before make back up
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  5. 01-03-2024, 12:25 PM #5
    zavateandu
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    Re: No. "8" shown on the LED status display -- FANUC Series Oi Mate-MB Controller

    Alarm 8 indicates that the CPU not started,i would recomend to replace the CPU board not the main board

    Click image for larger version.  Name: alarm 8 on mainboard.jpg  Views: 0  Size: 51.9 KB  ID: 500188
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