Agilent Technologies FieldFox N9923AN Service Manual page 106

Repair and Replacement Procedures
Removing and Replacing the Measurement Group Assemblies
Replacing the Type-N RF Connectors and RF Cables
1. Separate the front and rear cases. See
2. Remove all measurement group assemblies as one unit. Refer to
Measurement Group Assemblies as One Unit" on page
3. Remove the RF top assembly. Refer to
page 7-27.
4. Disconnect the cable connector nut on cable W1 or W2, depending on which connector
or cable is being replaced. Do not attempt to remove the cable, just release the
connector nut.
5. Remove the two screws (item 2) from the type-N RF connector to be replaced.
6. Lift the type-N RF connector upwards and out of the RF bottom shield.
7. The PORT 2put cable can now be replaced by disconnecting the other end of the cable
and removing it. When installing the new cable, do not tighten either of the cable
connector nuts until both of them have been installed finger tight.
8. Remove the RFI O-ring.
9. Remove the old insulator and install a new one.
10. Position the new type-N RF connector in the RF bottom shield, making sure that it
aligns with the cable connector underneath. Loosely install the cable connector nut.
11. Install a new RFI O-ring over the new type-N RF connector in the position shown.
12. Loosely reinstall the two screws (item 2). Note the location for these two screws in the
illustration. To ensure proper alignment, install two additional screws, finger tight, in
the two empty holes in the type-N RF connector, then tighten the two screws that
secure the connector. Remove the two alignment screws.
13. Tighten the cable connector nut(s) on cable W1 or W2.
14. Perform the steps under
Figure 7-20 Replacing the Type-N RF Connectors and RF Cables
7-28
"Separating the Front and Rear Cases" on page
"Replacing the RF Top Panel Assembly" on
"Post-replacement Procedure" on page
RF Vector Network Analyzer
"Removing All
7-25.
7-37.
Service Guide N9923-90005
N9923AN
7-8.