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Sun Fire X4800 Server Service Manual Overview
Sun Fire X4800 Server Overview
Controlling Server Power Remotely
Removing and Installing Components
Preparing for Service and Operation
Removal and Installation Procedures
Removing and Installing a Power Supply (CRU)
Removing and Installing a Hard Drive (CRU)
Removing and Installing a Hard Drive Filler
Replacing the Hard Drive Backplane (FRU)
Adding, Removing, and Installing a CMOD (CRU)
CPU Module (CMOD) Designation and Population Rules
Removing and Installing a CMOD Filler
How to Replace the CMOD Battery (CRU)
Removing and Installing DIMMs (CRU)
Removing and Installing a RAID Expansion Module (CRU)
How to Replace the RAID Expansion Module Battery (CRU)
Removing and Installing a Fabric Expansion Module (CRU)
Replacing a CPU and Heatsink Assembly (FRU)
Removing and Installing a Fan Module (CRU)
Replacing a Fan Module Controller Board (FRU)
Removing and Installing a NEM or a NEM Filler (CRU)
Removing and Installing a PCIe EM (CRU)
Removing and Installing the Service Processor Module (CRU)
Removing and Installing the Multi port Cable
Removing and Installing the Subassembly Module (FRU)
Sun Fire X4800 Server Service Procedures, and Information
Firmware Information and Procedures
How to Access the BIOS Setup Utility
Component LED Locations and Meanings
For additional information, including how to prepare the system for servicing, how to remove a CMOD, and how to remove or replace DIMMs, see Removing and Installing Components.
Each CMOD has 32 DIMM slots, with 16 allocated to each CPU. CMODs are shipped with configurations of 16 or 32 DIMMs, meaning that each CPU has either 8 or 16 DIMMs.
On a CMOD with 16 DIMMs, you can replace DIMMs, and you can add additional DIMMs.
On a CMOD with 32 DIMMs, you can replace DIMMs, but because they are fully populated, you cannot add DIMMs.
The rules for adding and replacing DIMMs are:
When you replace DIMMs, you must match parameters.
When you add DIMMs, you must match parameters and populate them in the specified order.