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Replacing the DIMMs
To replace the DIMMs, locate them inside the controller and follow the specific sequence of steps.
About this task
If you are replacing a DIMM, you need to remove it after you have unplugged the NVMEM battery from the
controller module.
A video for this task is available at:
• YouTube:
https://www.youtube.com/playlist?list=PLYV5R7hVcs-Atzbq4KHJgYQHkA9FCH0-m
Step 1.
If you are not already grounded, properly ground yourself.
Step 2.
Check the NVMEM LED on the controller module.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
Step 3.
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.
Step 4.
If the NVMEM LED is flashing, there is data in the NVMEM and you must disconnect the battery to
clear the memory:
a.
Locate the battery, press the clip on the face of the battery plug to release the lock clip from
the plug socket, and then unplug the battery cable from the socket.
ThinkSystem DM3000x and DM5000x Hardware Installation and Maintenance Guide
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