IBM 7378, Problem Determination And Service Manual

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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 4, “Parts listing, System x3400 M3 Types 7378 and 7379,” on page 141 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.
The System %1 encountered a
POST Error.
(%1 = CIM_ComputerSystem.
ElementName) Error A POST error has occurred.
(Sensor = Firmware Error)
1. Make sure that the server
contains DIMMs.
2. Reseat the DIMMs.
3. Install DIMMs in the correct
sequence (see “Installing a
memory module” on page
231).
4. Update the server firmware
on the primary page.
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. (Trained service technician
only) Replace the failing
microprocessor.
6. (Trained service technician
only) Replace the system
board.
An Uncorrectable Bus Error has
occurred on system %1.
(%1 = CIM_ComputerSystem.
ElementName) Error A bus uncorrectable error
has occurred.
(Sensor = Critical Int PCI)
1. Check the system-event log.
2. Check the PCI error LEDs.
3. Remove the adapter from the
indicated PCI slot.
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. (Trained service technician
only) Replace the system
board.
Chapter 3. Diagnostics
43