IBM xSeries 300 Hardware Maintenance Manual

Also see for xSeries 300: Service guide Datorns förinstallerade program Vooraf geïnstalleerde software Tietoja ohjelmistosta Om programvaren

Contents

Chapter 3. DiagnosticsThis section provides basic troubleshooting information to help you resolve somecommon problems that might occur with the server.If you cannot locate and correct the problem using the information in this section,refer to Chapter 7, “Symptom-to-FRU index” on page 63 for more information.Diagnostic tools overviewThe following tools are available to help you identify and resolve hardware-relatedproblems:v POST beep codesThe power-on self-test (POST) generates beep codes and messages to indicatesuccessful test completion or the detection of a problem. See “POST” for moreinformation.v Diagnostic programs and error messagesThe server diagnostic programs are provided on the IBM Enhanced DiagnosticsCD. These programs test the major components of the server. See “Diagnosticprograms and error messages” on page 12 for more information.POSTWhen you turn on the server, it performs a series of tests to check the operation ofserver components and some of the options installed in the server. This series oftests is called the power-on self-test or POST.If POST finishes without detecting any problems, the first window of the operatingsystem or application program appears.Note:1. If you have a power-on password or administrator password set, youmust type the password and press Enter, when prompted, before POSTwill continue.2. A single problem might cause several error messages. When this occurs,work to correct the cause of the first error message. After you correct thecause of the first error message, the other error messages usually will notoccur the next time you run the test.POST beep code descriptionsPOST generates beep codes to indicate successful completion or the detection of aproblem.v One short beep indicates the successful completion of POST.v More than one beep indicates that POST detected a problem. For moreinformation, see “Beep symptoms” on page 63“.POST error messagesThe possible types of beep codes that your system might emit are:© Copyright IBM Corp. 2000 11