SRNs Service request numbers, in the form xxx-xxx, may also be displayed on theoperator panel display and be noted in the AIX error log.SRNs are listed in theDiagnostic Information for Multiple Bus Systems.FRU IsolationFor a list of error codes and recommended actions for each code, see Chapter 5, “ErrorCode to FRU Index”, on page 115. These actions can refer to Chapter 10, “PartsInformation”, on page 303, Chapter 3, “Maintenance Analysis Procedures (MAPs)”, onpage 35, or provide informational message and directions. If a replacement part isindicated, direct reference is made to the part name. The respective AIX and physicallocation codes are listed for each occurrence as required. For a list of locations codes,see “Location Codes” on page 14.To look up part numbers and view component diagrams, see Chapter 10, “PartsInformation”, on page 303. The beginning of that chapter provides a parts index with thepredominant field replaceable units (FRUs) listed by name. The remainder of thechapter provides illustrations of the various assemblies and components that make upthe system.Electronic Service Agent for the RS/6000Service support for the system can be enhanced through the use of the applicationprogram, Electronic Service Agent for the RS/6000. This application provides a numberof advantages for the customer, including automatic error reporting and analysis withoutcustomer intervention. The Electronic Service Agent kit ships with the system andincludes the following:v Electronic Service Agent for the RS/6000 program on CD-ROMv The manualElectronic Service Agent for the RS/6000 User’s Guide.If the manual is not included, it can be downloaded from the following Web site:ftp://ftp.software.ibm.com/aix/.Using the Service Processor and Electronic Service Agent FeaturesThe service processor and Electronic Service Agent features protect users againstunnecessary system downtime by advising support personnel (both internal andexternal) of any unexpected changes in the system environment. In combination, thetwo features provide a flexible solution to automated system maintenance.Service ProcessorThe service processor runs on its own power boundary and continually monitorshardware attributes, the AIX operating system, and the environmental conditions withinthe system. Any system failure which prevents the system from coming back to anoperational state (a fully functional AIX operating system) is reported by the serviceprocessor. The service processor is controlled by firmware and does not require the AIXChapter 2. Diagnostic Overview 31
