Description
The Chassis Management Module (CMM) is not able to communicate with the specified fan module.
Causes
The Chassis Management Module (CMM) is not able to communicate with the specified fan module.
Implications
If there is an error in a fan logic module, the CMM cannot monitor the associated fan modules or detect their presence, and the fan modules on that side of the chassis will speed up. Solve fan logic module issues before you address fan-module issues.
Resolutions
Replace the fan module.
Additional information
To find additional troubleshooting help, visit the "IBM Support & downloads" Web site. At "IBM Support Portal: Quick start" page, select Browse for "Choose your products", select your Chassis from PureFlex System under the Hardware list, and "Troubleshoot" for "Choose your page", then select "Continue" 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, visit the same "IBM BladeCenter Support search" Web site, select "Download" for "Task", and then select "Product Family", "Machine type" and "Operating system" of interest (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.
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.
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