IBM 8841 - eServer xSeries 236 Installation Manual

Also see for 8841 - eServer xSeries 236: Option installation guide

Contents

Chapter 6. Solving problemsThis chapter provides basic troubleshooting information to help you solve somecommon problems that might occur while you are setting up the server.If you cannot locate and correct the problem using the information in this chapter,see Appendix A, “Getting help and technical assistance,” on page 55, the HardwareMaintenance Manual and Troubleshooting Guide on the IBM xSeries DocumentationCD, and the “Server Support” flowchart in the front of this document.Diagnostic tools overviewThe following tools are available to help you diagnose and solve hardware-relatedproblems:v POST beep codesThe power-on self-test beep codes indicate the detection of a problem.– One beep indicates successful completion of POST, with no errors.– More than one beep indicates that POST detected a problem. Error messagesalso appear during startup if POST detects a hardware-configuration problem.See “POST beep code descriptions” and the Hardware Maintenance Manualand Troubleshooting Guide on the IBM xSeries Documentation CD for moreinformation.v Troubleshooting chartsThese charts list problem symptoms and steps to correct the problems. See“Troubleshooting charts” on page 46 for more information.v Diagnostic programs and error messagesThe system diagnostic programs are provided in electrically erasableprogrammable ROM (EEPROM) that is shared with BIOS. These programs testthe major components of the server. See the Hardware Maintenance Manual andTroubleshooting Guide on the IBM xSeries Documentation CD for moreinformation.v Light path diagnosticsUse light path diagnostics to diagnose system errors quickly. See “Light pathdiagnostics” on page 51 for more information.POST beep code descriptionsPOST emits one beep to signal successful completion. If POST detects a problemduring startup, other beep codes might occur. Use the following beep codedescriptions to help diagnose and solve problems that are detected during startup.Note: See the Hardware Maintenance Manual and Troubleshooting Guide on theIBM xSeries Documentation CD for more information about the POST beep codes.One beepPOST was completed successfully without finding any errors.Repeating long beepsA memory error has occurred. Make sure that all DIMMs are correctlyinstalled.© Copyright IBM Corp. 2005 43