Removal and Replacement 6-12 Main/VNA/DSP PCB Assembly Replacement
Model MS20xxB MM PN: 10580-00303 Rev. D 6-29
6-12 Main/VNA/DSP PCB Assembly Replacement
This procedure provides instructions for removing and replacing the Main/VNA/DSP PCB Assembly for
MS2034B and MS2035B instruments.
Parts:
• ND72117 – Main/VNA/DSP PCB Assembly for MS2034B instruments
– Does not include SPA PCB Assembly
– Does not include GPS Receiver Module
– Does not include Ethernet Option PCB Assembly
• ND72118 – Main/VNA/DSP PCB Assembly for MS2035B instruments
– Does not include SPA PCB Assembly
– Does not include GPS Receiver Module
– Does not include Ethernet Option PCB Assembly
Procedure:
1. Open the case as described in Section 6-6 “Opening the Instrument Case” on page 6-14.
2. Remove the PCB Assembly from the front panel as described in Section 6-7 “PCB Assembly Replacement
(MS202xB and MS203xB)” on page 6-17.
3. Remove the SPA board (if the instrument is an MS2034B or MS2035B) as described in Section 6-8 “SPA
Assembly Replacement” on page 6-19.
4. Remove the GPS board (if option 31 is installed) from the Main/VNA PCB Assembly as described in
Section 6-9 “GPS (Option 31) Replacement” on page 6-24.
5. Remove the Ethernet PCB Assembly (if option 411 is installed) from the Main/VNA PCB Assembly as
described in Section 6-10 “Ethernet PCB Assembly (Option 411) Replacement” on page 6-26.
Installing the Main/VNA/DSP PCB Assembly:
6. Installation is the reverse of removal. Follow replacement instructions for each of the parts and
assemblies that were removed, as appropriate.
7. Close the case as described in Section “Case Reassembly:” on page 6-16.
Note
When ordering the Main/VNA/DSP PCB Assembly, all options that are installed on the instrument
must be stated on the order.
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