282 Chapter6
General Troubleshooting
Introduction
Introduction
This chapter provides information needed to troubleshoot the
instrument to one of the six major functional sections. Chapters 7
through 12 cover troubleshooting for each of these sections. Before
troubleshooting, read the rest of this introduction. To begin
troubleshooting, refer to "Troubleshooting to a Functional Section" in
this chapter.
Troubleshooting to a Functional Section........................... page 290
Using the TAM.................................................................... page 292
Error Messages.................................................................... page 298
System Analyzer Programming Errors (100 to 150)......... page 300
Block Diagram Description................................................. page 329
NOTE When a part or assembly is replaced, adjustment of the affected
circuitry is usually required. Refer to Chapter 2, "Adjustment
Procedures."
WARNING Troubleshooting and repair of this instrument with the cover
removed exposes high voltage points that may, if contacted,
cause personal injury. Maintenance and repair of this
instrument should, therefore, be performed only by a skilled
person who knows the hazards involved. Where maintenance
can be performed without power applied, the power should be
removed. When any repair is completed, be sure that all safety
features are intact and functioning and that all necessary parts
are connected to their grounds.
Assembly Level Text
To locate troubleshooting information for an individual assembly, refer
to Table 6-1 on page 291.
Block Diagrams
Instrument-level block diagrams are located at the end of this chapter.
Power levels and voltages shown on block diagrams are provided as a
troubleshooting aid only. They should not be used for making
instrument adjustments.
Assembly Test Points
The spectrum analyzer board assemblies contain four types of test
points: post, pad, extended component lead, and test jack. Figure 6-1 on
page 284 illustrates each type of test point as seen on both block
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