Table 5. Light path LED errors (continued)
Light path diagnostics LED Description Action
Microprocessor x error The microprocessor has
failed, or overheated, or the
boot microprocessor is
missing.
1. Check the CMM log for
more information.
Perform the appropriate
action.
2. If the log shows that a
microprocessor is
disabled or that a
microprocessor IERR has
occurred, perform the
appropriate action.
3. (Trained service
technician only) Reset the
microprocessor that is
indicated by the lit LED.
4. (Trained service
technician only) Replace
the microprocessor that is
indicated by the lit LED.
Microprocessor mismatch The microprocessors do not
match.
Make sure that all installed
microprocessors are identical
(number of cores, cache size,
type, clock speed, and
internal / external clock
frequencies).
NMI The system board failed.
1. Reinsert the compute
node, and then restart the
compute node. Check the
IMM event log for
information about the
error.
2. (Trained service
technician only) Replace
the system-board
assembly.
System board The system board failed. (Trained service technician
only) Replace the
system-board assembly.
Temperature The system temperature has
exceeded the threshold level
1. Check the function of the
shared compute node and
chassis unit resources.
2. Make sure that the room
temperature is not too
high.
Hard disk drive A hard disk drive failed. Run the fixed disk or
attached disk diagnostic test.
If the drive passes the test
but continues to have a
problem replace the hard
disk drive (see “Removing a
hot-swap hard disk drive”
on page 522 and “Installing a
hot-swap hard disk drive”
on page 523)..
Chapter 6. Troubleshooting 61
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