Lenovo ThinkSystem DM3010H - Step 3: Replace the Dimms

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Controller module cover release button
Step 3: Replace the DIMMs
Locate the DIMM inside the controller, remove it, and replace it.
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Before replacing a DIMM, you need to unplug the NVMEM battery from the
controller module.
Steps
1.
If you are not already grounded, properly ground yourself.
You must perform a clean system shutdown before replacing system components to avoid
losing unwritten data in the nonvolatile memory (NVMEM). The LED is located on the back of
the controller module. Look for the following icon:
NV
2.
If the NVMEM LED is not flashing, there is no content in the NVMEM; you can skip the following
steps and proceed to the next task in this procedure.
3.
If the NVMEM LED is flashing, there is data in the NVMEM and you must disconnect the battery
to clear the memory:
a.
Remove the battery from the controller module by pressing the blue button on the side of
the controller module.
b.
Slide the battery up until it clears the holding brackets, and then lift the battery out of the
controller module.
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