Agilent Technologies N5241A, Service Manual

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4-2 Service Guide N5242-90001
Troubleshooting PNA Series Microwave Network Analyzers
Information in This Chapter N5241A/42A
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 for 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?
• Does the front panel USB connector
function properly?
Page 4-13
‘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 signal separation group.
• Checking the receiver group.
Page 4-23
Instrument Block Diagrams
Block diagrams for the analyzer including all
options.
Page 4-41