IBM 887022X Maintenance Manual - Page 78

Diagnostic programs and error messages The server diagnostic programs are stored in upgradeable read-only memory (ROM) on the I/O board. These programs are the primary method of testing the major components of the server. Diagnostic error messages indicate that a problem exists; they are not intended to be used to identify a failing part. Troubleshooting and servicing of complex problems that are indicated by error messages should be performed by trained service personnel. Sometimes the first error to occur causes additional errors. In this case, the server displays more than one error message. Always follow the suggested action instructions for the first error message that appears. The following sections contain the error codes that might appear in the detailed test log and summary log when running the diagnostic programs. The error code format is as follows: fff-ttt-iii-date-cc-text message where: fff is the three-digit function code that indicates the function being tested when the error occurred. For example, function code 089 is for the microprocessor. ttt is the three-digit failure code that indicates the exact test failure that was encountered. iii is the three-digit device ID. date is the date that the diagnostic test was run and the error recorded. cc is the check value that is used to verify the validity of the information. text message is the diagnostic message that indicates the reason for the problem. 68 xSeries 445 Type 8870: Hardware Maintenance Manual and Troubleshooting Guide