Table 10. Bus problemSymptom What you should do:The system has detected a bus problem. An SRC of theform B600 69xx will be displayed on the Control Panel.Bus errors will not prevent a system from completing anIPL, though bus errors are logged during an IPL. Thoughit is possible for a bus error to bring a system or partitiondown, most of the time the system or partition will befunctioning and the error will be logged in the ServiceAction Log.If the system shows an SRC in the Service Action Log,look at the failing items identified in the Service ActionLog view.If possible failing hardware can be identified, the ServiceAction Log will list hardware FRUs to be replaced. Ifhardware FRUs can not be identified, the Service ActionLog will list procedures designed to isolate failinghardware.Perform any symbolic FRUs or Bus problem isolationprocedures (Bus PIPs) listed in the Service Action Log. Toreplace hardware, go to Locations and addresses for thesystem or tower on which you are working.If a Service Action Log is not available, use the SRC onthe control panel and go to the appropriate B600 Systemreference code table.Table 11. You cannot find the symptom in this pageSymptom What you should do:You cannot find the symptom in this page.Note: Information about a 940x frame and devices in theframe can be found in the SY44-4934-00, FC 504xProblem Analysis and Repair and Parts information.Go to “Use the service action log.”Links to helpful iSeries (TM) Service Functions topicsBefore you start problem analysis, you may find it helpful to review the following information available inthe iSeries (TM) Service Functions information:v To understand how the system and its devices connect together: see System Architecture andConfiguration .v To understand SRC definition and formats and how they appear: see System Reference Code (SRC)Information .v To understand how the control panel works: see Control Panel Functions .v Also, review supplemental RPQ pages.v If the Verification of System Password Failed display appears during IPL, see System Password .Use the service action logFor use by authorized service providers.Perform the following procedure to search for an entry in the Service Action Log that matches the time,SRC, or resource of the reported problem.1. On the command line, enter the Start System Service Tools command:STRSSTAnalyze hardware problems 7
