Lenovo Flex System x220, Installation And Service Manual

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3. If no problem is observed on the DIMM connectors or the problem persists, replace the DIMM
identified by LightPath and/or event log entry.
4. If problem recurs on the same DIMM connector, replace the other DIMMs on the same memory
channel.
5. Check the IBM support site for an applicable service bulletin or firmware update that applies
to this memory error.
6. If problem recurs on the same DIMM connector, inspect connector for damage. If found,
replace the system board.
7. Replace the affected Processor.
8. Replace system board.
Related links
– “Removing a DIMM” on page 652
– “Installing a DIMM” on page 654
– “Removing a microprocessor and heat sink” on page 675
– “Installing a microprocessor and heat sink” on page 678
– “Removing the system-board assembly” on page 683
– “Installing the system-board assembly” on page 684
• S.51006 [S.51006] A memory mismatch has been detected. Please verify that the memory
configuration is valid.
Explanation: One or More Mismatched DIMMs Detected
Severity
Error
User Response
Complete the following steps:
1. Could follow an uncorrectable memory error or failed memory test. Check the log and service
that event first. DIMMs disabled by other errors or actions could cause this event.
2. Verify that the DIMMs are installed in the correct population sequence.
3. Disable memory mirroring and sparing. If this action eliminates the mismatch, check the IBM
Support site for information related to this problem.
4. Update UEFI firmware.
5. Replace the DIMM
6. Replace the processor.
Related links
– “Removing a DIMM” on page 652
– “Installing a DIMM” on page 654
– “Removing a microprocessor and heat sink” on page 675
– “Installing a microprocessor and heat sink” on page 678
• S.51009 [S.51009] No system memory has been detected.
Explanation: No Memory Detected
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Flex System x220 Compute Node Installation and Service Guide