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ABB Totalflow G4 32MB Engine Card Technical Bulletin

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This technical bulletin addresses abnormal system resets in ABB Totalflow G4 products caused by a voltage regulator issue on 32MB engine cards manufactured between March 2012 and January 2013. It details affected products, part numbers, and the resolution involving a hardware modification (replacing the voltage regulator) and software updates to prevent temperature-related voltage drops and system resets.

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