Service manual

xix
Preface
Intended Audience
This manual is for service providers who maintain Compaq AlphaServer
GS80/160/320 systems.
Document Structure
This manual uses a structured documentation design. Topics are organized into
small sections, usually consisting of two facing pages. Most topics begin with an
abstract that provides an overview of the section, followed by an illustration or
example. The facing page contains descriptions, procedures, and definitions.
This manual has six chapters, four appendixes, and a glossary.
• Chapter 1, System Overview, introduces the three systems covered by
this manual. It describes both the system and management architecture,
and each component in the system.
• Chapter 2, Power-Up, describes system power-up.
• Chapter 3, Troubleshooting, describes troubleshooting techniques.
• Chapter 4, GS160/320 Component Removal and Replacement,
describes removal and replacement procedures of field-replaceable units.
• Chapter 5, Power Cabinet Component Removal and Replacement,
describes removal and replacement procedures of field-replaceable units
that reside in the power cabinet.
• Chapter 6, GS80 Component Removal and Replacement, describes
removal and replacement procedures of field-replaceable units with the
exception of PCI box units in the GS80 cabinet.
• Appendix A, Power Distribution Rules, describes how power is
distributed in various system configurations.
• Appendix B, Cache Coherency, describes how the system keeps cache
coherent.