7-14 Keysight N9912A Service Guide
Repair and Replacement Procedures
Removing and Replacing the Case Group Parts
7-
Replacing the I/O Side Panel, Doors, and Gasket
1. Separate the front and rear cases. See “Separating the Front and Rear
Cases” on page 7-9.
2. Remove the measurement group assemblies (RF top panel assembly, A4
RF board, A5 system board, and A6 SOM board) as one unit with the I/O
panel attached, but do not disconnect cable W11 from between the A2
LCD and the A5 system board. Refer to “Removing and Replacing the
Measurement Group Assemblies” on page 7-29.
3. Remove the two screws (item 5) that secure the I/O side panel to the A5
system board and remove the I/O side panel.
Figure 7-8 Replacing the I/O Side Panel
4. Remove the three doors from the old I/O side panel:
a. Open each door to its stopping point, then GENTLY force it beyond
its stopping point to separate it from the panel.
5. Install the three doors in the new I/O side panel:
a. Place each door in its respective opening with the hinges aligned
with the hinge slots in the side panel.
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