Keysight Technologies N9040B UXA Signal Analyzer Service Guide 391
Assembly Replacement Procedures
RF Area - Options 544, 550
Figure 15-40 Attenuators Removal - Options 544, 550
Item Keysight Part Number
W2 N9040-20114
W3 N9040-20103
W4 N9040-20102
W51 N9040-20104