Description
Voltage of I/O board standby power supply whose nominal output is +3.3V drops down under recommended voltage.
Causes
There could be a variety of causes that could influence the voltage to exceed a high threshold or fell below a low threshold:
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obstructed airflow
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bad component such as IO card, voltage regulator module, Blade expansion unit, etc.
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bad power supply
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AC outlet not supplying the correct voltage and current
Implications
A voltage event occurs when the state of a system voltage sensor changes with respect to a manufacturer-defined threshold. The cause of the voltage problem should be identified and addressed at the earliest opportunity.
Resolutions
It is possibly a hardware problem of the I/O board.
Additional information
To find additional troubleshooting help, visit the "IBM Support & downloads" Web site, select "BladeCenter" for "Browse products for support" panel. At "Support & downloads quick start" page, select your product for "Choose your products", and "Troubleshooting" for "Choose your page", then select "View your page" for "See your results". To narrow the results, search with keywords that are related to this article, such as "fail", "Chassis", etc. in the "Search support" field at the right panel.
To download the latest firmware or drivers, visit the "Fix Central" Web site, select "BladeCenter" for "Product Group" (from the pull-down lists), select your product for "Product" (from the pull-down lists), select your product machine type for "Product" (from the pull-down lists), and select your operating system for "Operating system" (from the pull-down lists). You can refine the search by selecting the category of the download of your interest from the "Refine results" list.
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