Replace model 9116-561 or 570 memory modules

If you removed memory modules as a part of another procedure, you might need to replace memory modules. Use the procedure in this section to perform this task.

If your system is managed by the Hardware Management Console (HMC), use the HMC to complete the steps for replacing memory modules in the server. For instructions, see Replace a part using the Hardware Management Console. If you do not have an HMC, complete the following steps to replace memory modules:

Replace memory modules

Perform the prerequisite tasks described in Before you begin.
If necessary, remove memory modules from the processor card assembly. For instructions, see Remove model 9116-561 or 570 memory modules.
If necessary, remove the memory module from its antistatic package.
As shown in Figure 1, ensure that the connector locking tabs A are pushed out into the unlocked position before installing a new memory module.
Note: Before you add memory to the system ensure you have read and understand the notes and restrictions in the notes section, see Model 9116-561 or 570 memory modules.
Carefully grasp the memory module B along two edges and align it with the connector.
Attention: Memory modules are keyed to prevent a memory module from being installed incorrectly. Note the locations of the key tabs within the memory module connector before attempting to install the memory module.
Push the memory module B firmly into the connector until the connector locking tabs engage.
Figure 1. Replacing a memory module
If you have tall 4 GB or 8 GB memory modules, use the Mylar cover to prevent the memory modules from contacting the lid. When you have finished inserting the memory modules A, place the Mylar cover B over them, as shown in Figure 2. If you replace tall 4 GB or 8 GB memory modules with any other size memory modules, remove the Mylar cover. Failing to remove the Mylar cover might restrict airflow in the unit.
Attention: Do not install 8 GB memory modules on a processor assembly with any size memory modules other than 4 GB memory modules. Installing 8 GB memory modules with sizes other than 4 GB memory modules might unconfigure of the other size memory modules and you will see an associated System Reference Code of B123F688. Your system might have other size memory modules on a different processor assembly.

Figure 2. The Mylar cover placed over 4 GB or 8 GB memory modules
As shown in the following figure, place the cover A on the processor card assembly, and then lock the two retention knobs B.
Figure 3. Replacing the system processor assembly cover replacement

Complete the procedure

Replace the system backplane. For instructions, see Replace the model 9116-561 or 570 system backplane.
Replace the voltage regulator card assemblies, as described in Model 9116-561 or 570 voltage regulator assembly.
Replace the control panel. For instructions, see Replace the control panel with the power off.
Reconnect the SMP processor cable. For instructions, see Reconnect the SMP processor cable to a system unit.
Install the front cover. For instructions, see Install the front cover on the model 9116-561 or 570.
Reconnect all power and signal cables to their respective connectors.
Stop the system. For instructions, see Start the system or logical partition.
Verify the installed part. For instructions, see Verify the installed part.
If you are replacing memory modules as part of another procedure, return to the procedure now.