IBM 7870B4U Service Manual page 229

v See Chapter 4, "Parts listing," on page 41 to determine which components are CRUs and which components
are FRUs.
v If an action step is preceded by "(Trained service technician only)," that step must be performed only by a
trained service technician.
Error code Description
201-901-xxx Failed the memory self test due to a single-bit
error in DIMM x OR failed the memory self
test due to a multi-bit error in DIMMs x and
y.
Action
1. If the blade server has stopped responding, turn
off the blade server and pull it out of the bay to
disconnect it from power. See "Turning off the
blade server" on page 14 and "Removing the
blade server from the BladeCenter unit" on
page 52.
2. Reseat DIMM x. See "Removing a memory
module" on page 64 and "Installing a memory
module" on page 65.
3. Return the blade server to the blade server bay
and turn on the blade server. See "Installing the
blade server in a BladeCenter unit" on page 53
and "Turning on the blade server" on page 14.
4. Make sure that the DSA Diagnostic code is at
the latest level; then, rerun the test ("Diagnostic
tools overview" on page 101). The latest code
can be found on the IBM support Web site at
http://www.ibm.com/support/
docview.wss?uid=psg1SERV-DSA.
5. Make sure that the system BIOS firmware is at
the latest level, upgrade if necessary; then, rerun
the test ("Diagnostic tools overview" on page
101). The BIOS firmware level can be found in
the DSA Diagnostic Event Log within the
Firmware/VPD section for this component. The
latest level firmware for this component can be
found on the IBM support Web site at
http://www.ibm.com/support/
docview.wss?uid=psg1MIGR-63017.
6. If the component failure remains, refer to
Chapter 5, "Removing and replacing blade
server components," on page 49 to replace the
failing DIMMs.
7. Return the blade server to the blade server bay
("Installing the blade server in a BladeCenter
unit" on page 53), press F1 during start up and
in the Setup utility > Resource Utilization
section, click Available System Memory to
re-enable all memory; then, rerun the test
("Diagnostic tools overview" on page 101).
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Chapter 6. Diagnostics