Keysight Technologies Option 503 Service Manual page 442

Assembly Replacement Procedures
RF Area (Options 503, 508, 513, 526)
8. Refer to
Figure 16-20 W52 Cable Removal
9. Refer to
Figure 16-21 Attenuator Removal
442
Figure 16-20. Remove cable
top switch port 4 and Low Band Switch Assembly connector that is closest
to the inner chassis.
Figure 16-21. Remove the coaxial fixed attenuator (1),
W52 (N9020-20146) (1) between
N9030A PXA Signal Analyzer Service Guide