Troubleshooting; Introduction - HP 3000 Series Handbook

5
Troubleshooting
Introduction
This chapter presents the overall strategy for troubleshooting failures on HP 3000/9x8LX/RX
and HP 9000 800 Ex5 Class systems, and provides some procedures you can follow that will
help you isolate most system failures.
The chapter is organized so that you can diagnose failures in a logical way from the "top
down". Regardless of your experience, you can use the information and procedures in this
chapter to isolate and correct nearly all system hardware failures. If a failure occurs that
is not covered here, you should consult more experienced support personnel within your
organization or contact the nearest Hewlett-Packard Response Center for assistance.
Before taking any other steps to remedy a failure, always collect as much information as
possible about the failure. Never swap out any of the field replaceable units until you have
made notes of the following:
• the failure symptoms
• all indicators
• display information
• system configuration
• number of users
• application and/ or tasks being done at the time of failure
• any other information that you could possibly use to describe the nature of the failure.
Use this information, along with the procedures in this chapter, to choose the most
appropriate corrective action. Keep a log of all actions you take for future reference.
If you are an experienced service provider, you may wish to skip the procedural sections and
directly consult the error tables and replaceable parts sections.
There are two basic types of failures:
• Hard Failures
• Soft Failures
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