Keysight N5221A/22A Service Guide 6-17
Replaceable Parts
Replaceable Parts Listings
c. You can learn your System CPU version using the PNA software. On the PNA front panel, press Help > About Network
Analyzer. In the window displayed, find “System CPU Version.”
d. For more information on the N8983A SSD, refer to the Windows 7 Operating System Upgrade Kit Installation Note, available
online at http://literature.cdn.keysight.com/litweb/pdf/N8983-90001.pdf.
e. The lithium battery is located inside the A17 CPU board assembly. Refer to “Removing and Replacing the Lithium
Battery” on page 7-58 for an illustration.