6

General Troubleshooting

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.

Topic

 

Page

Troubleshooting to a Functional Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. 6-8

UsingtheTAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

6-10

Error

Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

6-15

Block

Diagram Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

.6-35

 

 

 

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 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.

Assembly Level Text

To locate troubleshooting information for an individual assembly, refer to Table 6-1.

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.

General Troubleshooting 8-1