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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 the ″Parts Listing″ section in the Hardware Maintenance Manual 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.
A Uncorrectable Bus Error has
occurred on system %1.
(%1 = CIM_ComputerSystem.
ElementName)
Error A bus uncorrectable error
has occurred.
(Sensor = Critical Int CPU)
1. Check the system-event log.
2. Check the microprocessor
error LEDs.
3. Remove the failing
microprocessor from the
system board.
4. 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.
5. Make sure that the two
microprocessors are
matching.
6. (Trained service technician
only) Replace the system
board.
A Uncorrectable Bus Error has
occurred on system %1.
(%1 = CIM_ComputerSystem.
ElementName)
Error A bus uncorrectable error
has occurred.
(Sensor = Critical Int DIM)
1. Check the system-event log.
2. Check the DIMM error LEDs.
3. Remove the failing DIMM
from the system board.
4. 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.
5. Make sure that the installed
DIMMs are supported and
configured correctly.
6. (Trained service technician
only) Replace the system
board.
Chapter 8. Troubleshooting 159