Agilent Technologies 4352B, Service Manual

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4
Overall Troubleshooting
INTRODUCTION
This chapter describes overall troubleshooting summary and provides a procedure to determine
whether the analyzer is faulty , or not. The procedure is performed rst in the troubleshooting
section of this manual.
TROUBLESHOOTING SUMMARY
The troubleshooting strategy of this manual is based on a verication (rather than symptomatic)
approach. This chapter's rst step is to verify the operation of the analyzer alone , independent
of the signal generator or system peripherals . P eripherals are devices like computers ,
disk drives , and plotters , for instance , which typically use an GPIB connection and a line
connection. This chapter also suggests remedies for system problems external to the analyzer .
This chapter identies one or more faulty groups in the analyzer's four functional groups . Then
refers the technician to the appropriate chapter . The four functional groups are power supply ,
digital control, source , and receiver . Descriptions of these groups are provided in the Theory of
Operation chapter .
Figure 4-1 diagrams the troubleshooting organization.
P ost-R epair Procedures is the last chapter of this manual. P ost-R epair Procedures is organized
by assembly and notes what adjustment to perform and how to verify proper instrument
operation following the replacement of an assembly .
Overall T roubleshooting 4-1