v Follow the suggested actions in the order in which they are listed in the Action column until the problem is
solved.
v If an action step is preceded by “(Trained technician only),” that step must be performed only by a trained
technician.
v Go to the IBM support website at http://www.ibm.com/supportportal/ to check for technical information, hints,
tips, and new device drivers or to submit a request for information.
Diagnostic
code Message Description Action
W.11004 [W.11004] A processor within
the system has failed the BIST.
Processor Self Test Failure
Detected.
1. Check the IBM support website
for an applicable retain tip or
firmware update that applies to
this problem.
2. (Trained technician only) If there
are more than one microprocessor
installed, swap the
microprocessors. If the problem
follows the affected
microprocessor or there is only
one microprocessor installed,
replace the affected
microprocessor (see “Removing a
microprocessor and heat sink” on
page 347 and “Replacing a
microprocessor and heat sink” on
page 349).
3. (Trained technician only) Replace
the system board.
S.1100C [S.1100C] An uncorrectable
error has been detected on
processor %.
Uncorrectable microprocessor
error detected.
1. Check the IBM support website
for an applicable retain tip or
firmware update that applies to
this error.
2. Restart the server.
3. Contact your IBM service
representative for support.
(% = microprocessor number)
I.18005 [I.18005] A discrepancy has
been detected in the number of
cores reported by one or more
processor packages within the
system.
Processors have mismatched
number of cores.
1. Make sure that the microprocessor
is on the ServerProven website at
http://www.ibm.com/systems/
info/x86servers/serverproven/
compat/us/ .
2. Check the IBM support website
for an applicable retain tip or
firmware update that applies to
this problem.
3. (Trained technician only) Remove
and replace the affected
microprocessor (error LED is lit)
with a supported type (see
“Replacing a microprocessor and
heat sink” on page 349).
Chapter 4. Troubleshooting 123
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