Light path diagnostics LEDs

Use the Setup utility to check the system-event log for information about the error.

1. Check the LEDs on the system board to identify the component that is causing the error. The BRD LED can be lit for the following conditions:
   • Battery
   • Missing PCI riser-card assembly
   • Failed voltage regulator
2. Check the system-event log for information about the error.
3. Replace any failed or missing replaceable components, such as the battery (see Removing the battery for more information) or PCI riser-card assembly (see Removing a PCI riser-card assembly for more information).
4. If a voltage regulator has failed, replace the system board.

This LED is used with the MEM and CPU LEDs.

When only the CPU LED is lit, a microprocessor has failed.

When the CPU and CNFG LEDs are lit, an invalid microprocessor configuration has occurred.

1. Determine whether the CNFG LED is also lit. If the CNFG LED is not lit, a microprocessor has failed.
   1. Make sure that the failing microprocessor, which is indicated by a lit LED on the system board, is installed correctly. See Installing a microprocessor and heat sink for information about installing a microprocessor.
   2. If the failure remains, call your next level of support.
2. If the CNFG LED is lit, then an invalid microprocessor configuration has occurred.
   1. Make sure that the microprocessors are compatible with each other. They must match in speed and cache size. To compare the microprocessor information, run the Setup utility and select System Information, then select System Summary, and then select Processor Details.
   2. Replace an incompatible microprocessor.
   3. If the failure remains, call your next level of support.

1. Check the LEDs on the hard disk drives for the drive with a lit status LED and reseat the hard disk drive.
2. Reseat the hard disk drive backplane.
3. For more information, see Resolving hard disk drive problems.
4. If the error remains, replace the following components in the order listed, restarting the server after each:
   1. Replace the hard disk drive, as described in Removing a hot-swap hard disk drive.
5. If the problem remains, call your next level of support.

1. Reseat the failing fan, which is indicated by a lit LED near the fan connector on the system board.
2. Replace the failing fan, which is indicated by a lit LED near the fan connector on the system board. See Removing a hot-swap fan for more information.

When only the MEM LED is lit, a memory error has occurred.

When both the MEM and CNFG LEDs are lit, the memory configuration is invalid or the PCI Option ROM is out of resource

1. If the MEM LED and the CNFG LED are lit, complete the following steps:
   1. Check the system-event log in the Setup utility. If a PCI Option ROM out-of-resource error log is present, reduce the base system ROM or change the ROM order.
   2. Run the DSA memory test to isolate the problem.
      • If the test reports that a memory error has occurred, replace the failing DIMM, which is indicated by the lit DIMM latch on the system board (the DIMM LED is underneath the DIMM latch).
      • If the test reports the memory configuration is invalid, repopulate the DIMMs to a supported configuration. (See Installing a memory module about memory configuration.)
2. If the CNFG LED is not lit, the system might detect a memory error. Complete the following steps to correct the problem:
   • The server did not boot and a failing DIMM LED is lit.
     1. Reseat the DIMM.
     2. Run the memory test to isolate the problem.
     3. If the test indicates that a memory error has occurred (check the system log), replace the failing DIMM, which is indicated by the lit DIMM latch on the system board (the DIMM LED is underneath the DIMM latch).

1. If any of the power channel error LEDs (A, B, C, D, E, or AUX) on the system board are lit also, refer to the section on "Power problems" in the appropriate server guide in Troubleshooting the System x3650 server. (For the location of power channel error LEDs, see the section on "Internal connectors, LEDs, and jumpers".)
2. Check the power-supply LEDs for an error indication (AC LED and DC LED are not both lit, or the information LED is lit). Replace a failing power supply.
3. Remove optional devices from the server.

1. Check the LEDs on the PCI slots to identify the component that is causing the error.
2. Check the system-event log for information about the error.
3. If you cannot isolate the failing adapter through the LEDs and the information in the system-event log, remove one adapter at a time from the failing PCI bus, and restart the server after each adapter is removed.
4. If the failure remains, call your next level of support.

A power supply has failed.

Power supply 1 or 2 has failed.

When both the PS and CNFG LEDs are lit, the power supply configuration is invalid.

1. Check the power-supply that has an lit amber LED. (See Table 1 for more information.)
2. Make sure that the power supplies are seated correctly.
3. Remove one of the power supplies to isolate the failed power supply.
4. Make sure that both power supplies installed in the server are of the same type.
5. Replace the failed power supply.

1. Remove power from the server; then, reconnect the server to power and restart the server.
2. Update the firmware on the IMM.
3. If the failure remains, call your next level of support.

1. Check the error log. If a fan has failed, replace it.
2. Make sure that the room temperature is not too high.
3. Once you complete the previous steps and feel the root problem that caused a temperature issue is resolved, the iMM interface needs to be rebooted to clear the TEMP indicator. Follow the steps in How to reset/reboot server iMM interface and then return here.
4. If the failure remains, call your next level of support.