Knowledge Article: ID B04401801: Voltage regulator %d under recommended threshold.

Description

Voltage of specified voltage regulator drops down under recommended threshold.

A warning alert has been issued due to the voltage of specified voltage regulator has risen up over recommended threshold.

Causes

A variety of causes could influence the voltage to exceed a high threshold or to fall below a low threshold:

• Obstructed airflow
• Bad component, such as an IO card, a voltage regulator module, a blade expansion unit, or other component
• Bad power supply
• AC outlet not supplying the correct voltage and current

Implications

The voltage event occurs when the state of a system voltage sensor changes with respect to a manufacturer-defined threshold. Identify and address the cause of the voltage problem at the earliest opportunity.

Resolutions

Perform these steps:

1. Check the event log for other errors related to this blade server or system power and resolve them.
2. If the blade server was turned off, attempt to restart the blade server.

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 find the replacement part number (or the FRU number) for the component replacement, visit the "BladeCenter and System x Product Information - Servers" Web site, select your product from "IBM BladeCenter products" table. Then select "System service parts listing" for your product.