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Keysight Technologies
N9040B UXA Signal Analyzer
Service Guide
5 Front End Control Troubleshooting
What You Will Find in This Chapter
The following information is presented in this chapter:
1. Theory of operation of the Front End Control section.
2. Isolating the cause of a hardware problem by verifying the functionality of
assemblies of the Front End Control.
The following information is found in this chapter:
A15 Front End Control Description on page 168
A15 Front End Control Assembly Troubleshooting on page 171
Each of the following sections first describes how the assembly works, then gives information to
help you troubleshoot the assembly. Each description explains the purpose of the assembly,
describes the main components, and lists external connections to the assembly.
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