Chapter 8. Hardware Problem DeterminationThis chapter provides information on using Stand-alone or online diagnostics to helpyou solve hardware problems. In addition, it provides a list of error codes andrecommended actions that you can take to resolve the problem before contacting aservice representative.Problem Determination Using the Standalone or Online DiagnosticsUse this procedure to obtain a service request number (SRN) when you are able toload the Stand-alone or Online Diagnostics. If you are unable to load the Stand-alone orOnline Diagnostics, go to “Problem Determination When Unable to Load Diagnostics”on page 154. The service organization uses the SRN to determine which fieldreplaceable units (FRUs) are needed to restore the system to correct operation.Step 1. Considerations before Running This ProcedureNote: See the operator manual for your ASCII terminal to find the key sequences youneed to respond to the diagnostic programs.v The diagnostics can use a display connected to the video port or an ASCII terminalattached to a serial port.v This procedure asks you to select the type of diagnostics you want to run. If youneed more information about the types, see “Chapter 5. Using the Standalone andOnline Diagnostics” on page 107.v Go to step 2.Step 2Are the Online Diagnostics installed on this system?NO Go to “Step 15” on page 153.YES Go to “Step 3”.Step 3Determine if the operating system is accepting commands.Is the operating system accepting commands?NO The system must be turned off in order to run diagnostics.Verify with the system administration and users that the system maybe turned off. If so, then turn off the system unit and go to “Step 6” onpage 150.YES Go to “Step 4” on page 150.149
