4-2 Service Guide E8364-90038
Troubleshooting PNA Series Microwave Network Analyzers
Information in This Chapter E8362C, E8363C, E8364C
Information in This Chapter
The information in this chapter helps you:
• Identify the portion of the analyzer at fault.
• Locate the specific troubleshooting procedure to identify the assembly or peripheral at fault.
The sections in this chapter are arranged in a logical troubleshooting order. The following table lists the 
sections and a brief summary of what to look for in that section.
Chapter Four at-a-Glance
Section Title Summary of Content Start Page
Getting Started with Troubleshooting A starting point to begin troubleshooting. Page  4-4
Power Up Troubleshooting Power-up problems:
• Power supply problems 
•LCD problems
• Bootup for the network analyzer interface
Page  4-6
Front Panel Troubleshooting
Problems occurring after the network analyzer 
interface is loaded:
• Does the display color appear correct?
• Do the front panel keys function properly?
• Do the front panel USB connectors function 
properly?
Page  4-12
Rear Panel Troubleshooting
Problems associated with the rear panel 
interconnects.
The data found at these rear panel interconnects can 
be used to troubleshoot the CPU board.
Page  4-17
Measurement System Troubleshooting
Problems with the measurement portion of the 
analyzer.
• Checking the A, B, R1, and R2 signals.
• Checking the source group.
• Checking the receiver group.
• Checking the signal separation group.
• Checking the frequency offset group (Option 080).
Page  4-24
Instrument Block Diagrams
Block diagrams for the analyzer including Option UNL 
and Option 014.
Page  4-49