2-1
CHAPTER
2
Troubleshooting Overview
This chapter describes the factory-defined boot sequence. It also describes the
different types of SPARCstation 5 diagnostic firmware and software tools that are
available to you for troubleshooting; the chapter explains how the tools are related
and when to use them.
■ “Factory-Defined Boot Mode” on page 1
■ “After Power Is Switched On” on page 3
■ “Diagnostic Tools and When to Use Them” on page 7
■ “Power-On Self-Test” on page 8
■ “FORTH-Based PROM Diagnostics” on page 8
■ “FORTH Monitor” on page 11
■ “System Exercisers” on page 11
2.1 Factory-Defined Boot Mode
The flowcharts in FIGURE 2-1 and FIGURE 2-2 outline the roles played by various
diagnostics during a factory-defined boot operation under the control of the
OpenBoot™ PROM (OBP) firmware.
The following sections describe the relationship between the various diagnostic
tools, and the role each tool plays during the SPARCstation 5 factory-defined boot
sequence. The descriptions in the following sections assume you are using a
graphics monitor to view test results.
FIGURE 2-1 (POST phase) and FIGURE 2-2 (OBP phase) graphically depict the flow of
OBP processing control, after power is switched on. Each figure depicts the possible
paths for processing control, and the switch settings for the factory-defined boot
sequence. By examining the two flowcharts you can see where in the processing
sequence other diagnostic tests are available or are encountered.
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