Need Help! z80 cpu alarm and any panel button (such as F1, F2) no response

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Thread: z80 cpu alarm and any panel button (such as F1, F2) no response

  1. #1
    Member BOBWA's Avatar
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    Default z80 cpu alarm and any panel button (such as F1, F2) no response

    The Hitachi seiki HC 400 had z80 cpu alarm firstly.

    Now realized its pannel buttons no working now.
    Does it mean the operation pannel faulty too?

    Does anyone know if it can be caused by the z80 cpu alarm?

    Thanks,
    Bob

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  2. #2
    Member shas595's Avatar
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    Default Re: z80 cpu alarm and any panel button (such as F1, F2) no response

    Quote Originally Posted by BOBWA View Post
    The Hitachi seiki HC 400 had z80 cpu alarm firstly.

    Now realized its pannel buttons no working now.
    Does it mean the operation pannel faulty too?

    Does anyone know if it can be caused by the z80 cpu alarm?

    Thanks,
    Bob
    It can either be your micon board is faulty or possibly a bad ladder due to corruption or low battery


    Sent from my iPhone using Tapatalk



  3. #3
    Member DannyNagua's Avatar
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    Default Re: z80 cpu alarm and any panel button (such as F1, F2) no response

    Hello I had a bad battery alarm but didn't care about since i have other problems but now nothing works
    how do I reload the ladder?



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z80 cpu alarm and any panel button (such as F1, F2) no response

z80 cpu alarm and any panel button (such as F1, F2) no response