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.58007 [W.58007] Invalid
memory configuration
(Unsupported DIMM
Population) detected.
Please verify memory
configuration is valid.
Unsupported DIMM
Population.
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. Reseat the DIMMs and restart the server (see
“Removing a memory module (DIMM)” on
page 250 and “Installing a memory module”
on page 250).
2. Make sure that the DIMMs are installed in the
proper sequence (see “Installing a memory
module” on page 250).
Chapter 3. Diagnostics 37
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