Sun Microsystems SPARCstation 20, Service Manual

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C H A P T E R
11
System Board and Component
Replacement
This chapter describes how to remove, replace, and configure the replacement parts.
MBus Module
The following paragraphs provide procedures for removing and installing a single-
wide and a double-wide MBus module. To remove and install a single-wide and a
double-wide MBus module, proceed as follows.
Removing a Single-Wide MBus Module
Caution –
Hot surface. Avoid contact. Surfaces are hot and may cause personal
injury if touched.
1. Remove power from the system.
See “Removing Power from the System” on page 45.
2. Remove the cover and attach the wrist strap.
See Chapter 7.
Caution –
Use proper ESD grounding techniques when handling components. Wear
an antistatic wrist strap and use an ESD-protected mat. Store ESD-sensitive
components in antistatic bags before placing it on any surface.