Chapter 3 Theory Of Operation; System-Level Operation - HP 400 Series Servicing Manual

This chapter describes the theory of operation for Series 400 systems. Its purpose is to
help you understand the operation of these systems to the FRU level so that you can
trace problems more effectively.
3.1

System-Level Operation

This section presents a general overview of the Domain/OS operating system and the
system buses. Refer to Section 3.2 for details about the individual FRUs.
The Series 400 systems run either the Domain/OS or HP operating systems, such as
HP-UX, and are available in the following three models:
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•
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Model 400t
Model 400dl
Model 400s
Chapter 3
Theory of Operation
Theory of Operation 3-1