Keysight Technologies N9040B UXA Signal Analyzer Service Guide 401
Assembly Replacement Procedures
RF Area - Options 544, 550
4. Refer to Figure 15-48. To remove either SW3 or SW6 transfer switch
remove the four screws (1) (0515-1934) attaching the switch to the
bracket.
Figure 15-48 Removing Transfer Switch from Bracket - Options 544, 550