I.18007 [I.18007] A power segment mismatch has been detected for one or more processor packages.
Explanation: Processors have mismatched Power Segments
Severity: Error
User response: Complete the following steps:
1. Processors installed do not have the same power requirements
2. Ensure that all Processors have matching power requirements (such as 65, 95, or 130 Watts)
3. If power requirements match, check IBM support site for an applicable service bulletin or firmware update that
applies to this Processor error.
4. (Trained Service technician only) Replace Processor. Inspect Processor socket and replace the system board first if
socket is damaged
I.18008 [I.18008] A mismatch has been detected between Processors frequency and DDR3 DIMMs frequency.
Explanation: Processors have mismatched Internal DDR3 Frequency
Severity: Error
User response: Complete the following steps:
1. Verify that matching DIMMs are installed in the correct population sequence, according to the service
information for this product. Correct any configuration issues found.
2. (Trained Service technician only) Replace associated Processor. Inspect Processor socket and replace the system
board first if socket is damaged
I.18009 [I.18009] A core speed mismatch has been detected for one or more processor packages.
Explanation: Processors have mismatched Core Speed
Severity: Error
User response: Complete the following steps:
1. Verify that matching processors are installed in the correct processor sockets according to the service information
for this product. Correct any mismatch issues found.
2. Check IBM support site for an applicable service bulletin or firmware update that applies to this Processor error.
3. (Trained Service technician only) Replace Processor. Inspect Processor socket and replace the system board first if
socket is damaged.
I.1800A [I.1800A] A mismatch has been detected between the speed at which a QPI link has trained between
two or more processor packages.
Explanation: Processors have mismatched Bus Speed
Severity: Error
User response: Complete the following steps:
1. Verify that the Processor is a valid option that is listed as a Server Proven device for this system. If not, remove
the Processor and install a Server Proven one.
2. Verify that matching Processors are installed in the correct Processor sockets according to the service information
for this product. Correct any mismatch found.
3. Check IBM support site for an applicable service bulletin or firmware update that applies to this processor error.
4. (Trained Service technician only) Replace the Processor. Inspect Processor socket and replace the system board
first if socket is damaged
I.18007 • I.1800A
Appendix B. UEFI/POST error codes 593
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