Chapter 2 Troubleshooting The Vaxmate Workstation; Introduction; Diagnostic Tests; Power-Up Test - DEC VAXmate Service Manual

Chapter 2
Troubleshooting the
VAXmate Workstation
2.1 Introduction
This chapter describes how
to
diagnose problems in the VAXmate worksta
tion to the failing FRU. It describes the VAXmate diagnostic tests and how to
use them.
It
also describes the VAXmate light emitting diodes (LEDs), their
locations and functions.
This chapter does not describe how to troubleshoot the network. If you sus-
pect a problem in the network, see Chapter 3, ThinWire Ethernet.
2.1.1 Diagnostic Tests
The VAXmate workstation has three diagnostic tests
to
help isolate problems.
The tests vary in level of testing.
1.
Power-Up
2. Extended Self-Test
3.
Service Diagnostics
2.1.1.1 Power-Up Test
This is the most basic of the three VAXmate diagnostic tests.
It
is stored in
the VAXmate firmware and is referred to as a ROM-based diagnostic. It per-
forms a quick check of
80
percent of the VAXmate workstation, including
the CPU board, keyboard, I/O board, video subsystem, diskette drive, hard
disk controller and drives (if present), and any DIGITAL options that have
on-board diagnostics. Power-Up test also checks only the real mode memory
(768 Kbytes).
2-1