216 Chapter4
Troubleshooting the Analyzer
Before You Start
Additional troubleshooting details for specific assemblies are available
in Chapter 5 and Chapter 6 of this service guide. Assembly
descriptions are located in Chapter 9.
Component-level information for the 8590 E-Series and L-Series
spectrum analyzers, 8591C cable TV analyzers, 8594Q QAM analyzers
is provided in the 8590 Series Analyzers Component-Level Repair
Service Guide binder. Refer to Chapter 12 for a list of available
component-level service information.
Before You Start
There are four things you should do before starting to troubleshoot a
failure.
• Check that you are familiar with the safety symbols marked on the
instrument, and read the general safety considerations and the
safety note definitions given in the front of the this guide.
• The analyzer contains static sensitive components. Read the section
entitled “Protection From Electrostatic Discharge” in step 1.
• Become familiar with the organization of the troubleshooting
information in this chapter and the chapters that follow.
• Read the rest of this section.
WARNING The analyzer contains potentially hazardous voltages. Refer to
the safety symbols on the analyzer and the general safety
considerations at the beginning of this service guide before
operating the unit with the cover removed. Failure to heed the
safety precautions can result in severe or fatal injury.
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