Keysight Technologies Option 503 Service Manual page 456

Assembly Replacement Procedures
RF Area (Options 503, 508, 513, 526)
10.Refer to
Figure 16-37 W52 Installation
456
Figure 16-37. Install rigid cable
top switch port 4 and Low Band Switch Assembly connector that is closest
to the inner chassis. Torque to 10 inch-lbs.
Item Keysight Part Number
W52 N9020-20146
W52 (N9020-20146) (1) between
N9030A PXA Signal Analyzer Service Guide