Light path diagnostics LEDs

Use this information to diagnose and solve possible errors that are indicated by the light path diagnostics LEDs.

The following table describes the LEDs on the system board and suggested actions to correct detected problems. For information about the location of the LEDs on the system board, see Blade server controls and LEDs. See Viewing the light path diagnostics LEDs for information about lighting the LEDs.

  • Follow the suggested actions in the order in which they are listed in the Action column until the problem is solved.
  • See Parts listing - BladeCenter HX5 to determine which components are CRUs and which components are FRUs.
  • If an action step is preceded by "(Trained service technician only)," that step must be performed only by a trained service technician.
Lit light path diagnostics LED Description Action
None An error has occurred and cannot be isolated, the service processor has failed, or the blade server is not sufficiently charged to display the LEDs on the system board.
  1. Make sure that the light path diagnostics LED is lit, to ensure that there is enough power in the blade server to light the rest of the LEDs.

    View the media tray select LED. If it is lit, there is sufficient power in the blade server to light the rest of the LEDs. If it is not lit, install the blade server in a chassis for approximately 2 hours to charge the blade server (the blade server does not have to be powered on).

    See Viewing the light path diagnostics LEDs.

  2. Check the IMM event log for information about an error that is not represented by a light path diagnostics LED. See IMM error codes in AMM.
DIMM x error A memory error occurred.

Check for system event, IMM, and AMM logs related to the memory error and resolve these issues.
I/O expansion error The IMM lights this LED when the expansion card in the I/O-expansion connector has failed. The fault LED on the front panel is also lit.
  1. Reseat the SSD expansion card. See Removing an SSD expansion card and Installing an SSD expansion card.
  2. Replace the SSD expansion card. See Removing an SSD expansion card and Installing an SSD expansion card.
Blade expansion error The IMM lights this LED when the expansion blade in the blade expansion connector has failed. The fault LED on the front panel is also lit.
  1. Reseat the CFFh expansion card. See Removing a CFFh expansion card and Installing a CFFh expansion card.
  2. Replace the CFFh expansion card. See Removing a CFFh expansion card and Installing a CFFh expansion card.
Microprocessor x error The IMM lights this LED when the microprocessor has failed or overheated or the start microprocessor (CPU 1) is missing. The fault LED on the front panel is also lit.
  1. Check the UEFI settings to ensure that the microprocessor is enabled. See Using the Setup utility for more information.
  2. Check the IMM event log for more information. See Viewing event logs through the Setup utility.
  3. If the log shows that a microprocessor is disabled or that a microprocessor error has occurred, perform one of the following actions:
    1. (Trained service technician only) Reseat the microprocessor that is indicated by the lit LED. See Removing a microprocessor and heat sink and Installing a microprocessor and heat sink.
    2. (Trained service technician only) Replace the microprocessor that is indicated by the lit LED. See Removing a microprocessor and heat sink and Installing a microprocessor and heat sink.
Scaling error This LED is lit when the scalability card is not seated correctly or has a fault.
  1. Reseat the scalability card.
  2. Replace the scalability card. See Removing the 2-node scalability card and Installing the 2-node Scalability card.
Battery error The system battery is not installed or is not working.
  1. Reseat the battery. See Removing the battery and Installing the battery.
  2. Replace the battery. See Removing the battery and Installing the battery.
I/O expansion error (CIOv) The IMM lights this LED when the expansion card in the I/O-expansion connector (CIOv) has failed. The fault LED on the front panel is also lit.
  1. Reseat the expansion card.
  2. Replace the expansion card. See Removing a CIOv expansion card and Installing a CIOv expansion card.
Reset indicator This LED is lit when the blade server is in the process of being reset. Information only
Parent topic: Light path diagnostics