Anritsu VNA Master MS2024B - PCB Assembly Replacement (Ms202 Xb and Ms203 Xb)

Removal and Replacement 6-7 PCB Assembly Replacement (MS202xB and MS203xB)
Model MS20xxB MM PN: 10580-00303 Rev. D 6-17
6-7 PCB Assembly Replacement (MS202xB and MS203xB)
This section describes the removal and replacement of the Main/VNA and Main/VNA/DSP PCB assemblies and
the SPA PCB, which are attached to the VNA Master Front Case. This section is preliminary to the removal
and replacement of the Main/VNA PCB Assembly (MS202xB Mother Board), the Main/VNA/DSP PCB
Assembly (MS203xB Mother Board), or the SPA PCB. The term Main PCB Assembly refers to both types (for
MS202xB or MS203xB).
This step is also necessary before any of the remaining replacement procedures.
1. Open the case as described in Section 6-6 “Opening the Instrument Case” on page 6-14.
Note
Procedures in this section are generic, and apply to many similar instruments. Photos and
illustrations are representative and may not match your instrument.
Note
The PCB Assembly that is shown in Figure 6-14 is not a VNA Master, but the removal steps are
appropriate.
1. SPA PCB
2. 2 screws holding SPA PCB Assembly to Top Connector Panel
3. 4 screws (2 each side) holding SPA PCB Assembly to Main/VNA PCB Bracket
4. Fan Cable Connector to Mother Board
5. LCD Connector to Mother Board
6. 4 screws holding Main/VNA PCB Assembly to Case Front
7. Keypad Connector to Mother Board
Figure 6-14. PCB Assembly Removed from the Case (SPA PCB shown)
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