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: Info
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: Info
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.1800B [I.1800B] A cache size mismatch has been detected for one or more processor packages.
Explanation: Processors have one or more cache levels with mismatched size
Severity: Info
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 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 the system board.
I.1800C [I.1800C] A cache type mismatch has been detected for one or more processor packages.
Explanation: Processors have one or more cache levels with mismatched type
Severity: Info
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.
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 the system board.
I.18009 • I.1800C
Chapter 6. Troubleshooting 443
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