Lenovo Flex System x440 Compute Node Installation And Service Manual page 853

2. If the compute node has recently been installed, moved, serviced, or upgraded, verify that the DIMM
is properly seated and visually verify that there is no foreign material in any DIMM connector on that
memory channel. If either of these conditions is found, correct and retry with the same DIMM. (Note:
The event Log might contain a recent 00580A4 event denoting detected change in DIMM population
that could be related to this problem.)
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.
• S.51006: [S.51006] A memory mismatch has been detected. Please verify that the memory
configuration is valid.
[S.51006] A memory mismatch has been detected. Please verify that the memory configuration is valid.
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.
• S.51009: [S.51009] No system memory has been detected.
[S.51009] No system memory has been detected.
Severity: Error
User Response:
Complete the following steps:
1. If any memory errors are logged other than this one, take actions indicated for those codes first.
2. If no other memory diagnostic codes appear in the logs, verify that all DIMM connectors are enabled
using the Setup utility or the Advanced Settings Utility (ASU).
3. If the problem remains, shut down and remove node from chassis and physically verify that one or
more DIMMs are installed and that all DIMMs are installed in the correct population sequence.
4. If DIMMs are present and properly installed, check for any lit DIMM-connector LEDs, and if found,
reseat those DIMMs.
5. Reinstall node in chassis, power on node, then check logs for memory diagnostic codes.
6. If the problem remains, replace the processor.
.
Chapter 6 Troubleshooting
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