Keysight Technologies N5221A

4-2 Keysight N5221A/22A Service Guide
Troubleshooting
Information in This Chapter
4-
Chapter Four at-a-Glance
Conventions Used for Hardkeys, Softkeys, and Menu Items
The following conventions are used in this document:
Section Title Summary of Content Start Page
Getting Started with
Troubleshooting
A starting point for troubleshooting. page 4-6
Power Up Troubleshooting Power-up problems:
— Power supply problems
—LCD problems
— Bootup for the network analyzer interface
page 4-8
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 4-16
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 4-21
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 4-28
Instrument Block Diagrams Block diagrams for the analyzer including all options. page 4-47
This represents a “hardkey”, a key that is physically located on the instrument.
This represents a “softkey”, a key whose label is determined by the instrument
firmware.
Menu Item This represents an item in a drop-down or pop-up menu.
Hardkey
Softkey