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Chapter 1 Maintenance
1. Remove all but one processor from the server. Replace each with a processor terminator board or
blank, if applicable to the server.
2. Replace the remaining processor with a known functional processor. If the issue is resolved after you
restart the server, a fault exists with one or more of the original processors. Install each processor
one by one, restarting each time, to find the faulty processor or processors. At each step, be sure the
server supports the processor configurations.
[?]
POST error message or IML message is received indicating an uncorrectable machine check exception
Replace the processor.
[?]
Error message is received indicating low power or loss of power
Replace the battery.
[?]
POST message or IML message is received indicating an issue with either the motherboard or the power
backplane
Check all error messages for possible issues with other components and troubleshoot components
identified.
Make sure that no loose connections exist on the motherboard or power backplane. It is not necessary
to reseat processors.
Remove any components recently added.
Using System Utility <F9>, set the system configuration back to the default value. To set the system
configuration back to the default value in case the system does not start, use Jumper Switch SW6.
Gather necessary information and contact your sales representative.
[?]
System does not boot from the microSD card
Be sure the drive boot order in the System Utility is set so that the server boots from the microSD card.
Use the iLO web interface to verify that the microSD card is detected by LO.
Remove all power from the server. Reseat the microSD card, and then power on the server.
[?]
System does not boot from the USB drive key
Be sure that USB is enabled in the System Utility.
Make sure that the server is configured to boot from the USB drive in "UEFI Boot Order" or "Legacy
BIOS Boot Order" of System Utility.
Reseat the USB drive key.
Move the USB drive key to a different USB port, if available.
Express5800/R120h-1M, R120h-2M (3rd-Gen) Maintenance Guide
5. Troubleshooting
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