Keysight N9912A Service Guide 7-31
Repair and Replacement Procedures
Removing and Replacing the Measurement Group Assemblies
Replacing the RF Top Panel Assembly
1. Separate the front and rear cases. Refer to “Separating the Front and Rear
Cases” on page 7-9.
2. Remove all measurement group assemblies as one unit. Refer to
“Removing All Measurement Group Assemblies as One Unit” on
page 7-29.
3. Unplug the two connector plugs (tethered caps) from the type-N RF
connectors.
4. Disconnect cable W3.
5. Remove the six screws (item 1) and lift the RF top panel over the type-N
RF connectors.
6. Position the new RF top panel over the type-N RF connectors and loosely
reinstall the six screws (item 1). Do not tighten these screws at this time;
they will be tightened after the front and rear cases have been combined.
7. Connect cable W3 to the A5 system board connector. There should be an
audible click when the connector is fully in place.
8. Position (tuck) the cable W3 into the cavity above the A5 system board to
avoid interference with nearby parts.
9. Plug the two connector plugs (tethered caps) back into the type-N RF
connectors to protect the connectors.
10.Perform the steps under “Post-replacement Procedure” on page 7-43.
Figure 7-19 Replacing the RF Top Panel Assembly
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