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## Remove a DIMM

A DIMM is a cold-service component that can be replaced by a customer.

Before You Begin

Before beginning this procedure, ensure that you are familiar with the cautions and safety instructions described in Safety Information.

| Caution - Do not leave DIMM slots empty. You must install filler panels in all empty DIMM slots.

1. Consider your first steps:

   - Familiarize yourself with DIMM configuration rules.

     See DIMM Population Rules (Except 1536-Gbyte Configurations)

   - Prepare the system for service.

     See Preparing for Service.

   - Remove the processor module. Place the processor module on an ESD-protected work surface. Remove the processor module cover.

     See Servicing Processor Modules.

2. Locate the DIMMs that need to be replaced.

   See Locate a Faulty DIMM (DIMM Fault Remind Button).

3. Push down on the ejector tabs on each side of the DIMM until the DIMM is released.

   | Caution - DIMMs and heat sinks on the motherboard might be hot.

4. Grasp the top corners of the faulty DIMM and lift it out of its slot.
5. Place the DIMM on an antistatic mat.
6. Repeat Step 3 through Step 5 for any other DIMMs you intend to remove.
7. Determine if you will be installing replacement DIMMs at this time.
   - If you are installing replacement DIMMs at this time, go to Install a DIMM.
   - If you are not installing replacement DIMMs at this time, go to Step 8.
8. Finish the installation procedure.

   See:

   - Install the processor module.

     See Servicing Processor Modules.

   - Return the server to operation.

     See Returning the Server to Operation.

   - Verify DIMM functionality.

     See Verify DIMM Functionality.

##### Related Information

- DIMM Population Rules (Except 1536-Gbyte Configurations)

- Locate a Faulty DIMM (DIMM Fault Remind Button)

- Locate a Faulty DIMM (`show faulty` Command)

- Install a DIMM

- Verify DIMM Functionality

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