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  • #9130
    Nicholas Robinson
    Participant

    I’m experiencing issues with my Simplex 8742-346 (CPU Board 4009A) in my fire alarm system. The system seems to be malfunctioning. What could be the possible troubleshooting steps I should take?

    #9131
    Khris James
    Moderator

    First, ensure that all power connections to the CPU Board are secure and within the specified voltage range. Check for any visible signs of damage on the board, such as burnt components or loose connections.

    Next, review the system logs or diagnostic indicators on the control panel to identify any error codes or abnormal behavior that could point towards a specific issue.

    If the issue persists, try resetting the CPU Board by powering down the system completely, waiting for a few minutes, and then powering it back up.

    If none of these steps resolve the problem, it might be necessary to replace the CPU Board or seek assistance from a certified technician for further troubleshooting and repair.

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