SPARC T7-4 Server Service Manual

Determine Which DIMM Is Faulty (DIMM Fault LEDs)

DIMMs are cold-service components that can be replaced by customers. For the location of the DIMMs, see Processor Module Components.

1. Consider your first steps.
   • Familiarize yourself with DIMM configuration rules.

     See Understanding DIMM Configurations

   • Prepare the system for service.

     See Preparing for Service.

   • Remove the processor module containing the faulty DIMM. Place the processor module on an ESD-protect work surface. Remove the processor module cover.

     See Remove a Processor Module or Processor Filler Module.

2. Locate the DIMM Fault Remind button on the processor module.
   
3. Verify that the Memory Riser Power LED next to the button is illuminated.

   An illuminated Memory Riser Power LED indicates that there is power available to illuminate any Memory DIMM Fault LEDs once you have pressed the DIMM Fault Remind button.

4. Press the DIMM Fault Remind button on the processor module.

   This will cause the Memory DIMM Fault LEDs associated with any faulty DIMMs to illuminate for a few minutes.

5. Note the address of the DIMM next to any illuminated Memory DIMM Fault LED.
6. Ensure that all other DIMMs are seated correctly in their slots.

Related Information

• Determine Which DIMM Is Faulty (Oracle ILOM)

• Determine Which DIMM Is Faulty (PSH)