Keysight Technologies N9040B UXA Signal Analyzer Service Guide 451
Assembly Replacement Procedures
Fan Assembly
4. For Serial Number Prefix ≥ 5605 and All Options 544 and 550:
— Refer to Figure 15-99. Remove the seven screws (1) (0515-0372)
and the six screws (2) (0515-1946) that attach the fan bracket (3)
to the chassis.
Figure 15-99 Fan Bracket Removal
Serial Number Prefix ≥ 5605 and All Options 544 and 550