Keysight Technologies N9030B Service Manual page 192

RF Section Troubleshooting (Millimeter-Wave Analyzers)
Troubleshooting
High Band #2 signal path utilizes a high band mixer internal to the A13
Front End Assembly for input frequencies from 17.0 GHz to 34.5 GHz. High
Band #3 signal path utilizes a high band mixer internal to the A13 Front
End Assembly for input frequencies from 34.4 to 50 GHz. Failures from 3.6
GHz to 50 GHz will most likely be caused by the A13 RF Front End
Assembly. If the failure is amplitude related, proper adjustments such as
frequency response and the YTF Preselector adjust should be performed
first before changing the A13 RF Front End Assembly.
In order to gain access to the front end components, remove the side chassis
(1) by removing the 16 screws (2). See
Figure 5-6 Remove the Side Chassis
192
Figure 5-6.
N9030B PXA Signal Analyzer Service Guide