HP 8562E, Service Manual

Page: 220 / 482

General Troubleshooting
Introduction
This chapter provides information needed to troubleshoot your spectrum analyzer to one
of the six major functional sections. Chapters 8 through 13 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
TAM (Test and Adjustment Module)
Error Messages
System Analyzer Programming Errors (100 to 150)
Block Diagram Description
When a part or assembly is replaced, adjustment of the affected circuitry is
usually required. Refer to Chapter 2, “Adjustment Procedures.”
Troubleshooting and repair of this instrument without the cover 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.
To locate troubleshooting information for an individual assembly, refer to Table 7-l.
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.
General Troubleshooting