Keysight N9923A, Service Manual, Page: 98 / 138

Keysight N9923A Service Guide 7-17
Repair and Replacement Procedures
Removing and Replacing the Case Group Parts
9. Refer to “Removing and Replacing the Measurement Group Assemblies”
on page 7-28 to reinstall the measurement group assemblies removed in
step 2 .
10. Reinstall the rear case onto the front case. Refer to “Combining the Front
and Rear Cases” on page 7-17 .
Combining the Front and Rear Cases
1. Install a new gasket on the blank side panel being careful not to stretch it
or to damage it in any way. Also, make sure there is no slack in the gasket.
A new gasket is provided in the Repair and Re-assembly Kit (the blank side
panel uses the larger of the two gaskets provided). If an old gasket must
be removed, carefully remove it with tweezers being careful not to damage
the groove.
2. If a new gasket has not been installed on the I/O side panel, install it at
this time. It will be necessary to remove the I/O side panel from the A5
system board. Refer to “Replacing the I/O Side Panel, Doors, and Gasket”
on page 7-14 for instructions.
3. Position the front and rear cases side-by-side as shown.
4. Plug the battery cable, W10, into the A5 system board as indicated.