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 x3550 M3 Types 4254 and 7944,” on page 159 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.
v Go to the IBM support Web site at http://www.ibm.com/systems/support/ to check for technical
information, hints, tips, and new device drivers or to submit a request for information.
Error code Description Action
0018005 Microprocessors have mismatched number of
COREs.
1. Run the Setup utility and select System
Information → System Summary → Processor
Details to view the microprocessor information to
compare the installed microprocessor
specifications.
2. (Trained service technician only) Remove and
replace one of the microprocessors so that they
both match.
0018006 Microprocessors have mismatched QPI
speed.
1. Run the Setup utility and select System
Information → System Summary → Processor
Details to view the microprocessor information to
compare the installed microprocessor
specifications.
2. (Trained service technician only) Remove and
replace one of the microprocessors so that they
both match.
0018007 Microprocessors have mismatched power
segments.
1. Run the Setup utility and select System
Information → System Summary → Processor
Details to view the microprocessor information to
compare the installed microprocessor
specifications.
2. (Trained service technician only) Remove and
replace one of the microprocessors so that they
both match.
0018008 Microprocessors have mismatched internal
DDR3 frequency.
1. Run the Setup utility and select System
Information → System Summary → Processor
Details to view the microprocessor information to
compare the installed microprocessor
specifications.
2. (Trained service technician only) Remove and
replace one of the microprocessors so that they
both match.
0050001 DIMM disabled.
1. Make sure the DIMM is installed correctly (see
“Installing a memory module” on page 195).
2. If the DIMM was disabled because of a memory
fault, follow the suggested actions for that error
event.
3. If no memory fault is recorded in the logs and no
DIMM connector error LED is lit, you can
re-enable the DIMM through the Setup utility or
the Advanced Settings Utility (ASU).
30 IBM System x3550 M3 Types 4254 and 7944: Problem Determination and Service Guide
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