Chapter 7 — Assembly Replacement 7-6 GPS (Option 31) Replacement
S412E MM PN: 10580-00324 Rev. N 7-7
7-6 GPS (Option 31) Replacement
This procedure provides instructions for removing and replacing the GPS Module.
1. Open the case as described in Section 7-2 “Opening the S412E Case”.
2. Remove the PCB Assembly from the front panel as described in Section 7-3 “PCB Assembly
Replacement”.
3. Remove the SPA board as described in Section 7-4 “SPA Assembly Replacement”.
4. If not already removed, use a 5/16 inch wrench to remove the nut and washer from the GPS SMA
connector. Push the connector through the top panel.
5. Remove the 2 screws retaining the GPS module to the Main/VNA board.
6. Carefully lift straight up on the GPS module to remove. The back of the GPS module board is directly
connected to the Main/VNA board.
7. Installation is the reverse of removal.
Note
The SPA board cables, connector and the DSP board do not need to be removed when replacing
the GPS Module. Remove the screws and move the SPA board to the side.
Figure 7-8. Removing the GPS Module from the Main/VNA board (SPA board set to the side)
Remove
2 screws
Remove nut and washer
from GPS SMA connector
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