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Keysight Technologies
N9040B UXA Signal Analyzer
Service Guide
9 Power Supply/Midplane Troubleshooting
What You Will Find in This Chapter
The following information is presented in this chapter:
1. Theory of operation of the Power Supply/Midplane section.
2. Isolating the cause of a hardware problem by verifying the functionality of
assemblies in the Power Supply and Midplane sections.
This following descriptions are found in this chapter:
A6 Power Supply Description on page 224
A6 Power Supply Assembly Troubleshooting on page 228
A7 Midplane Board Assembly Description on page 230
A7 Midplane Board Assembly Troubleshooting on page 233
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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