• Follow the suggested actions in the order in which they are listed in the Action column until the problem is
solved.
• See
Chapter 4 “Parts listing, Lenovo System x3550 M3 Type 4254 and 7944” on page 403 to determine which
components are customer replaceable units (CRU) and which components are field replaceable units (FRU).
• If an action step is preceded by “(Trained service technician only),” that step must be performed only by a
trained service technician.
• 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.
Error code
Description
Action
005100A No usable memory detected. Note: Each time you install or remove a DIMM, you
must disconnect the server from the power source;
then, wait 10 seconds before restarting the server.
1. Make sure one or more DIMMs are installed in the
server.
2. Reseat the DIMMs and restart the server.
3. Make sure that the DIMMs are installed in the
correct sequence (see
“Installing a DIMM” on
page 436
for more information).
4. Clear CMOS memory to ensure that all DIMM
connectors are enabled (see
“System-board
switches and jumpers” on page 18
). Note that all
firmware settings will be reset to the default
settings.
0058001 PFA threshold exceeded Note: Each time you install or remove a DIMM, you
must disconnect the server from the power source;
then, wait 10 seconds before restarting the server.
1. Check the IBM support website for an applicable
retain tip or firmware update that applies to this
memory error.
2. Swap the affected DIMMs (as indicated by the
error LEDs on the system board or the event logs)
to a different memory channel or microprocessor
(see
“Installing a DIMM” on page 436 for memory
population).
3. If the error still occurs on the same DIMM, replace
the affected DIMM.
4. (Trained service technician only) If the problem
occurs on the same DIMM connector, check the
DIMM connector. If the connector contains any
foreign material or is damaged, replace the
system board.
5. (Trained service technician only) Remove the
affected microprocessor and check the
microprocessor socket pins for any damaged
pins. If a damage is found, replace the system
board.
6. (Trained Service technician only) Replace the
affected microprocessor.
Chapter 3. Diagnostics 311
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