SEL Troubleshooting Guide

System Event Log Troubleshooting Guide for Intel
®
S5500/S3420 Series Server Boards Memory Subsystem
Revision 1.1 Intel order number G74211-002 57
7.2.2.1 Memory Address Parity Error Sensor Next Steps
These are bit errors that are detected in the memory addressing hardware. An Address Parity Error implies that the memory address
transmitted to the DIMM addressing circuitry has been compromised, and data read or written is compromised in turn. An Address Parity Error
is logged as such in SEL but in all other ways is treated the same as an Uncorrectable ECC Error.
While the error may be due to a failing DRAM chip on the DIMM, it could also be caused by incorrect seating or improper contact between the
socket and DIMM, or by bent pins in the processor socket.
1. If needed, decode DIMM location from hex version of SEL.
2. Verify the DIMM is seated properly.
3. Examine gold fingers on edge of the DIMM to verify contacts are clean.
4. Inspect the processor socket this DIMM is connected to for bent pins, and if found, replace the board.
5. Consider replacing the DIMM as a preventative measure. For multiple occurrences, replace the DIMM.