Chapter 2 - Troubleshooting - North Star DIMENSION Service Manual

CHAPTER 2
TROUBLESHOOTING
Introduction This chapter contains DIMENSION troubleshooting
information gathered from many sources. Systems
programmers who tailored North Star's multi-user,
multi-processor operating system, DIMENSION DOS,
contributed to the chapter sections on automatic boot
diagnostics. Diagnostic programmers wrote programs to test
specific modules, such as the power supply voltage test
procedures. And over a year's experience with the
DIMENSION in a multitude of office environments has
provided field service technicians with invaluable information
that they have contributed to the database found in this
chapter.
Use Chapters 2 and 3 (Diagnostics) simultaneously. Chapter
2 provides the direction for beginning problem analysis. It
asks you to perform steps that may either resolve a problem
or lead you into Chapter 3. Chapter 3 explains how to
troubleshoot to subassembly (and occasionally component)
level by using the diagnostic diskettes that accompany this
manual.
After troubleshooting a symptom, refer to Chapter 3 and
perform diskette diagnostic routines or proceed directly to
Chapter 4 (Subassembly Removal) to remove a defective
subassembly. At the conclusion of your service/maintenance
call, you should use some combination of the automatic boot
and diskette diagnostics to verify proper system operation.
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