IBM RS6000 Service Guide - Page 99
Bus SRN to FRU Reference Table
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Bus SRN to FRU Reference Table This table is used to locate defective FRUs within the I/O board PCI and ISA buses. The table indicates which devices should be tested for each SRN. For this procedure, if possible, diagnostics are run on the I/O board bus devices with all adapters removed from the failing bus. If a failure is detected on this system with all adapters removed from the failing bus, the I/O board is the isolated FRU. If a failure is not detected, the adapters are added back one at a time, to their original slot location, and the configuration is tested until a failure is detected. The failure is then isolated to the failing FRU. If a failure has not been detected and all the FRUs have been tested call your technical service support person for assistance. Chapter 3. Error Code to FRU Index 3-27