User`s guide

Preface

This manual describes the KA52 CPU module used in the VAX 4000 Model 100

and 100A systems, the KA53 CPU module used in the VAX 4000 Model 105A

system, and the KA54 CPU module used in the VAX 4000 Model 106A system.

It provides the conﬁguration guidelines, ROM-based diagnostic information,

and troubleshooting information for systems containing the KA52/53/54 CPU

modules.

Audience

This manual is for Digital Services personnel who provide support and

maintenance for systems that use the KA52/53/54 CPU module. It is also for

customers who have a self-maintenance agreement with Digital Equipment

Corporation.

Structure of This Manual

This manual is divided into six chapters, eight appendixes, a glossary, and an

index:

• Chapter 1 describes the KA52/53/54 CPU module.

• Chapter 2 describes the KA52/53/54 system conﬁgurations.

• Chapter 3 describes the console commands that you can enter at the

console prompt.

• Chapter 4 describes the system initialization, testing and bootstrap process

that occurs at power-up.

• Chapter 5 describes the error log interpretation of diagnostic testing, the

ROM-based diagnostic testing, and troubleshooting procedures for the

KA52/53/54 systems. Also, this chapter provides information on testing

DSSI storage devices, using MOP Ethernet functions to isolate errors, and

interpreting UETP failures.

• Chapter 6 describes the FEPROM ﬁrmware.

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