The following table describes the LEDs on the light path diagnostics panel and suggested actions to correct the detected problems.
Note
Check the system-error log or system event log for additional information before replacing a FRU.
Table 1. Light path diagnostics panel 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 to determine which components are customer replaceable units (CRU) and which components are field replaceable units (FRU).
If an action step is preceded by (Trained service technician only), that step must be performed only by a trained service technician.
LED
Description
Action
None, but the system error LED is lit.
An error has occurred and cannot be isolated. The error is not represented by a path.
Use the Setup utility to check the system error log for information about the error.
OVER SPEC
The power supplies are using more power than their maximum rating.
If the OVER SPEC LED on the light path diagnostics panel is lit, or any of the six 12 V channel error LEDs (A, B, C, D, E, or AUX) on the system board are lit, use one of the following procedures.
If the 12 V channel A error LED is lit, complete the following steps:
Turn off the server and disconnect the power from the server.
Remove the optical drive, fans, hard disk drives, and hard disk drive backplane.
Restart the server to see whether the problem remains.
Reinstall each device that you removed in step 2 one at a time, starting the server each time, to isolate the failing device.
Replace any failing device.
(Trained service technician only) Replace the system board.
If the 12 V channel B error LED is lit, complete the following steps:
Turn off the server and disconnect the power from the server.
Remove the PCI riser card in connector 1, all DIMMs, and the microprocessor in socket 2.
Restart the server to see whether the problem remains.
Reinstall each device that you removed in step 2 one at a time, starting the server each time, to isolate the failing device.
Replace any failing device.
(Trained service technician only) Replace the system board.
(Continued on the next page)
OVER SPEC (Continued)
The power supplies are using more power than their maximum rating.
If the 12 V channel C error LED is lit, complete the following steps:
Turn off the server and disconnect the power from the server.
Remove the SAS/SATA RAID riser card, DIMMs in connectors 1 through 9, and the microprocessor in socket 1.
Note
The server will not power-on when the microprocessor in socket 1 or 2 is not installed in the server. (Trained service technician only) Toggle the switch block (SW4), bit 3 to allow the server to power-on. See System-board switches and jumpers for the location of the SW4 switch block on the system board.
Restart the server to see whether the problem remains.
Reinstall each device that you removed in step 2 one at a time, starting the server each time, to isolate the failing device.
Replace any failing device.
(Trained service technician only) Replace the system board.
If the 12 V channel D error LED is lit, complete the following steps:
Turn off the server and disconnect the power from the server.
(Trained service technician only) Remove the microprocessor in socket 1.
Note
The server will not power-on when the microprocessor in socket 1 or 2 is not installed in the server. (Trained service technician only) Toggle the switch block (SW4), bit 3 to allow the server to power-on. See System-board switches and jumpers for the location of the SW4 switch block on the system board.
Restart the server to see whether the problem remains.
(Trained service technician only) Reinstall the microprocessor in socket 1 and restart the server.
Replace any failing device.
(Trained service technician only) Replace the system board.
(Continued on the next page.)
OVER SPEC (Continued)
The power supplies are using more power than their maximum rating.
If the 12 V channel E error LED is lit, complete the following steps:
Turn off the server and disconnect the power from the server.
Remove the PCI riser card from PCI riser connector 2 and the microprocessor in socket 2.
Restart the server to see whether the problem remains.
Reinstall each device that you removed in step 2 one at a time, starting the server each time, to isolate the failing device.
Replace any failing device.
(Trained service technician only) Replace the system board.
If the 12 V AUX channel error LED is lit, complete the following steps:
Turn off the server and disconnect the power from the server.
Remove all PCI Express and PCI-X cards, all PCI riser cards, the operator information panel, and the Ethernet adapter (if installed).
Note
The server will not power-on when the microprocessor in socket 1 or 2 is not installed in the server. (Trained service technician only) Toggle the switch block (SW4), bit 3 to allow the server to power-on. See System-board switches and jumpers for the location of the SW4 switch block on the system board.
Restart the server to see whether the problem remains.
Reinstall each device that was removed in step 2 one at a time, starting the server each time, to isolate the failing device.
Replace any failing device.
(Trained service technician only) Replace the system board.
LOG
An error occurred.
Check the IMM system event log and the system-error log for information about the error. Replace any components that are identified in the error logs.
LINK
Reserved.
PS
Power supply 1 or 2 has failed. When both the PS and CNFG LEDs are lit, the power supply configuration is invalid.
Check the power-supply that has an lit amber LED (see Power-supply LEDs).
Make sure that the power supplies are seated correctly.
Remove one of the power supplies to isolate the failed power supply.
Make sure that both power supplies installed in the server are of the same type.
Replace the failed power supply.
PCI
An error has occurred on a PCI bus or on the system board. An additional LED is lit next to a failing PCI slot.
Check the LEDs on the PCI slots to identify the component that caused the error.
Check the system-error log for information about the error.
If you cannot isolate the failing adapter by using the LEDs and the information in the system-error log, remove one adapter at a time from the failing PCI bus; and restart the server after each adapter is removed.
Replace the following components, in the order shown, restarting the server each time:
PCI riser card
(Trained service technician only) Replace the system board.
A fan has failed, is operating too slowly, or has been removed. The TEMP LED might also be lit.
Reseat the failing fan, which is indicated by a lit LED near the fan connector on the system board.
Replace the failing fan, which is indicated by a lit LED near the fan connector on the system board.
Note
If an LED near an unused fan connector on the system board is lit, a PCI riser-card assembly might be absent. Replace the PCI riser-card assembly. One PCI riser-card assembly must always be present in PCI connector 2.
TEMP
The system temperature has exceeded a threshold level. A failing fan can cause the TEMP LED to be lit.
Make sure that the heat sink is seated correctly.
Determine whether a fan has failed. If it has, replace it.
Make sure that the room temperature is not too high. See Features and specifications for the server temperature 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.
Note
Each time you install or remove a DIMM, you must disconnect the server from the power source; then, wait 10 seconds before restarting the server.
If the MEM LED and the CNFG LED are lit, complete the following step:
Check the system-event log in the Setup utility or IMM error messages.
If the CNFG LED is not lit, the system might detect a memory error. Complete the following steps to correct the problem:
Update the server firmware to the latest level.
Reseat or swap the DIMMs.
Check the system-event log in the Setup utility or IMM error messages.
NMI
A nonmaskable interrupt has occurred, or the NMI button was pressed.
Check the system-error log for information about the error.
CNFG
A hardware configuration error has occurred.
If the CNFG LED and the CPU LED are lit, complete the following steps to correct the problem:
Check the microprocessors that were just installed to make sure that they are compatible with each other.
(Trained service technician only) Replace the incompatible microprocessor.
Check the system-error logs for information about the error. Replace any components that are identified in the error log.
If the CNFG LED and the MEM LED are lit, complete the following step:
Check the system-event log in the Setup utility or IMM error messages.
If the CNFG LED and the PS LED are lit, the system issues an invalid power configuration error. Make sure that both power supplies installed in the server are of the same type.
CPU
An invalid microprocessor configuration or a microprocessor has failed (both the CPU LED and the CNFG LED might be lit).
If the CNFG LED is lit, the system issues an invalid microprocessor configuration error. Complete the following steps to correct the problem:
Check the microprocessors that were just installed to make sure that they are compatible with each other and use the Setup utility and select System Information > System Summary > Processor Details to verify the microprocessors information.
(Trained service technician only) Replace the incompatible microprocessor.
Check the system-error logs for information about the error. Replace any components that are identified in the error log.
If a microprocessor failure occurs, complete the following steps:
(Trained service technician only) Make sure that the failing microprocessor, which is indicated by a lit LED on the system board, is installed correctly.