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v Follow the suggested actions in the order in which they are listed in the Action column until the problem
is solved.
v See Chapter 8, “Parts Listing, TD200x Machine Types 3719, 3821, 3822, and 3823,” on page 237 to
determine which components are customer replaceable units (CRU) and which components are field
replaceable units (FRU).
v If an action step is preceded by “(Trained service technician only),” that step must be performed only by a
trained service technician.
An SM BIOS Uncorrectable CPU
complex error for Processor CPU
nStatus has asserted.
(n = microprocessor number)
Error An SMBIOS uncorrectable
CPU complex error has
asserted.
1. Check for a server firmware
update.
Important: Some cluster
solutions require specific code
levels or coordinated code
updates. If the device is part
of a cluster solution, verify
that the latest level of code is
supported for the cluster
solution before you update
the code.
2. Make sure that the installed
microprocessors are
compatible with each other
(see “Installing a
microprocessor and heat sink”
on page 220 for information
about microprocessor
requirements).
3. (Trained service technician
only) Reseat microprocessor
n.
4. (Trained service technician
only) Replace microprocessor
n.
(n = microprocessor number)
Sensor CPU nOverTemp has
transitioned to critical from a less
severe state.
(n = microprocessor number)
Error A sensor has changed to
Critical state from a less
severe state.
1. Make sure that the fans are
operating, that there are no
obstructions to the airflow,
that the air baffle is in place
and correctly installed, and
that the server cover is
installed and completely
closed.
2. Make sure that the heat sink
for microprocessor n is
installed correctly.
3. (Trained service technician
only) Replace microprocessor
n.
(n = microprocessor number)
Chapter 5. Diagnostics 41