HP 4395A - Troubleshooting; Introduction

6
Troubleshooting
INTRODUCTION
This chapter describes troubleshooting ow and provides the procedure to determine which
group or an assembly is faulty and should be checked.
TROUBLESHOOTING SUMMARY
The troubleshooting strategy of this manual is based on a verication (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 trobleshooting steps sequentially
.
And if you could identify only the faulty group
, refer to the appropriate chapter following
this chapter. Each of following three chapters veries, one at a time, the assemblies within a
group until the faulty assembly is identied. These chapters employ more lengthy
, complicated
procedures. The three functional groups are power supply, digital control and accessories.
Figure 6-1 diagrams the troubleshooting organization.
Post-Repair Procedures , is the last chapter of the troubleshooting portion of the manual.
Post-Repair Procedures is organized by assembly and notes what adjustment to perform and
how to verify proper instrument operation following the replacement of an assembly
.
Troubleshooting 6-1