Service manual

106 4

Troubleshooting

TROUBLESHOOTING SUMMARY

The troubleshooting strategy of this manual is based on a verification (rather than

symptomatic) approach. This chapter describes typical troubleshooting procedure step by

step and you can identify a faulty assembly or a faulty group by following the

troubleshooting steps sequentially.

Figure 4-1 diagrams the troubleshooting organization.

Inspecting the power on sequence and the rear panel feature indicates a faulty group

(power supply or digital control). A faulty assembly is isolated to the faulty group accoding

to the troubleshooting procedures for each faulty group. The troubleshooting procedures

are given in Chapter 5 and 6.

Performing the internal tests, the external tests or the performance tests indicates a faulty

assembly. Assemblies of the analog section (source, transducer and vector ratio detector) of

the analyzer are verified by performing these tests.

A faulty assembly is replaced according to Chapter 9. Chapter 9 lists the replaceable parts

and gives replacement procedures for the major parts.

The procedures required after assembly replacement, such as adjustments and performance

tests, are given in Chapter 10.