CHAPTER 3

Servicing the Main Logic Board and

Components

This chapter describes how to remove and replace the system main logic board and main logic board components. For a list of part numbers for field-replaceable units and optional equipment, see Appendix D.

The following tasks are covered in this chapter:

Section 3.1 “How to Remove a Memory Module” on page 88

Section 3.2 “How to Install a Memory Module” on page 90

Section 3.3 “How to Remove a PCI Card” on page 94

Section 3.4 “How to Install a PCI Card” on page 97

Section 3.5 “How to Remove a CPU Module” on page 100

Section 3.6 “How to Install a CPU Module” on page 102

Section 3.7 “How to Remove the NVRAM/TOD Module” on page 106

Section 3.8 “How to Replace the NVRAM/TOD Module” on page 108

Section 3.9 “How to Remove the Air Guide” on page 110

Section 3.10 “How to Replace the Air Guide” on page 111

Section 3.11 “How to Remove the CPU Card Cage Assembly” on page 112

Section 3.12 “How to Replace the CPU Card Cage Assembly” on page 114

Section 3.13 “How to Remove the Main Logic Board” on page 116

Section 3.14 “How to Replace the Main Logic Board” on page 119

4Section 3.15 “How to Set the Serial Port Jumpers” on page 122 Section 3.16 “How to Set the Flash PROM Jumpers” on page 124

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Sun Microsystems 220R service manual Servicing the Main Logic Board Components