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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.
Sensor CPU nOverTemp has
transitioned to non-recoverable from
a less severe state.
(n = microprocessor number)
Error A sensor has changed to
Nonrecoverable 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)
Sensor CPU nOverTemp has
transitioned to critical from a
non-recoverable state.
(n = microprocessor number)
Error A sensor has changed to
Critical state from
Nonrecoverable 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 nis
installed correctly.
3. (Trained service technician
only) Replace microprocessor
n.
(n = microprocessor number)
Sensor CPU nOverTemp has
transitioned to non-recoverable.
(n = microprocessor number)
Error A sensor has changed to
Nonrecoverable 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 nis
installed correctly.
3. (Trained service technician
only) Replace microprocessor
n.
(n = microprocessor number)
42 ThinkServer TD200x Types 3719, 3821, 3822, and 3823: Hardware Maintenance Manual