IBM x3550 M4 Type 7914

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: 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 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: 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.
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.1800D [I.1800D] A cache associativity mismatch has been detected for one or more processor packages.
Explanation: Processors have one or more cache levels with mismatched associativity
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.
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.1800E [I.1800E] A processor model mismatch has been detected for one or more processor packages.
Explanation: Processors have mismatched Model Number
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.
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.1800B • I.1800E
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IBM System x3550 M4 Type 7914: Installation and Service Guide