Lenovo ThinkSystem SR650 Series Setup Manual page 216

5. Reverse the modules between the channels (of the same processor), and then restart the server. If the
problem is related to a memory module, replace the failing memory module.
Note: When DCPMMs are installed, only adopt this method in Memory Mode.
6. Re-enable all memory modules using the Setup Utility, and restart the system.
7. (Trained technician only) Install the failing memory module into a memory module connector for
processor 2 (if installed) to verify that the problem is not the processor or the memory module connector.
A Lenovo optional device that was just installed does not work.
1. Make sure that:
• The device is supported for the server (see
• You followed the installation instructions that came with the device and the device is installed
correctly.
• You have not loosened any other installed devices or cables.
• You updated the configuration information in system setup. When you start a server and press F1 to
display the system setup interface. Whenever memory or any other device is changed, you must
update the configuration.
2. Reseat the device that you just installed.
3. Replace the device that you just installed.
Voltage system board fault is displayed in the event log
Complete the following steps until the problem is solved.
1. Revert the system to the minimum configuration. See "Specifications" on page 5 for the minimally
required number of processors and memory modules.
2. Restart the system.
• If the system restarts, add each of the items that you removed one at a time, restarting the system
each time, until the error occurs. Replace the item for which the error occurs.
• If the system does not restart, suspect the system board.
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