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Diagnostic tools

The following tools are available to help you diagnose and solve hardware-related problems.

  • Diagnostics

    Use system error LED to diagnose system errors quickly. See Front view for more information.

  • Event logs

    The event logs list the error codes and messages that are generated when an error is detected for the subsystems TMM, POST, LTD, and the server baseboard management controller. See System event logs for more information.

  • TMM

    The TMM combines service processor functions, video controller, and remote presence and blue-screen capture features in a single chip. The TMM provides advanced service-processor control, monitoring, and alerting function. If an environmental condition exceeds a threshold or if a system component fails, the TMM lights LEDs to help you diagnose the problem, records the error in the TMM event log, and alerts you to the problem. Optionally, the TMM also provides a virtual presence capability for remote server management capabilities. The TMM provides remote server management through the following industry-standard interfaces:

    • Intelligent Platform Management Protocol (IPMI) version 2.0
    • Simple Network Management Protocol (SNMP) version 3
    • Common Information Model (CIM)
    • Web browser

    For more information about the TMM, see Using the TMM, TMM error messages.

  • Troubleshooting by symptom

    These tables list problem symptoms and actions to correct the problems. See Troubleshooting by symptom for more information.

  • System error LEDs
    This section describes the system error LEDs on the system board and the suggested actions to correct the detected problems.
  • System event logs
    Error codes and messages are displayed in POST event log, system-event log, TMM event log, and Diagnostic event log.
  • POST
    When you turn on the server, it performs a series of tests to check the operation of the server components and some optional devices in the server. This series of tests is called the power-on self-test, or POST.