Assembly Removal and Replacement, MS203xC 7-26 Replacing Fan Assembly – ND70948
MS20xxC MM PN: 10580-00307 Rev. D 7-81
15. Make sure that the VNA PCB Assembly is correctly positioned over the standoffs on the Mother Board,
and then fasten it into place using eight (8) Phillips-head screws.
Torque these screws to 7.5 lbf·in (0.85 N·m).
Installing the GPS Antenna SMA Connector:
16. If the GPS Receiver Module (Option 5) is not installed, then skip ahead to Step 17. Otherwise, perform
the following sub steps:
a. Route the GPS Antenna cable from the Main PCB so that it is located between the top connector
panel and the VNA PCB Assembly and routed into its notch
b. Install the GPS Antenna SMA connector into the top connector panel, add the lock washer, and
finally the nut.
c. Use two 5/16 inch (~8 mm) wrenches to attach the GPS Antenna SMA connector to the top
connector panel. Torque the nut to 7.5 lbf·in (0.85 N·m).
17. The next step is to close the case. Verify that all cables are properly positioned. Refer to section “Closing
the Case” on page 7-29, following any required steps in that section. Also refer to Figure 7-45
on page 7-82.
Installing Battery:
Refer to Section 5-4 “Battery Pack Removal and Replacement” on page 5-3.
18. Install the Battery.
19. Install the Battery Door.
Restarting the Instrument:
20. Restart the instrument.
21. Perform a function check to verify all repairs and part replacements.
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