4-1
CHAPTER
4
Servicing Motherboard Components
This chapter describes how to replace the motherboard and its components in the
Sun Fire X4150 Server.
Note – Before performing any of the procedures in this chapter, perform the
procedures described in Chapter 2, Preparing to Service the System.
The following topics are covered in this chapter:
■ Section 4.1, “Servicing FB-DIMMs” on page 4-2 (CRU)
■ Section 4.2, “Servicing the Air Baffle” on page 4-11 (CRU)
■ Section 4.3, “Servicing PCIe Risers” on page 4-14 (CRU)
■ Section 4.4, “Servicing PCIe Cards” on page 4-17 (CRU)
■ Section 4.5, “Servicing the Battery” on page 4-20 (CRU)
■ Section 4.6, “Servicing the Motherboard Assembly” on page 4-22 (FRU)
■ Section 4.7, “Servicing Processors” on page 4-27 (FRU)
■ Section 4.8, “Resetting Passwords and Clearing CMOS NVRAM” on page 4-34
■ Section 4.9, “Recovering from Corrupt Service Processor Software” on page 4-37
Note – Never attempt to run the server with the covers removed. Hazardous voltage
present.
Caution – Equipment damage possible. The covers must be in place for proper air
flow.