Anritsu VectorStar MN469 C Series, Руководство по обслуживанию, Страница: 66 / 78

5-15 Port Coupler Chapter 5 — Component Replacement
5-22 PN: 10410-00730 Rev. D MN469xC Series Multiport Test Set MM
5-15 Port Coupler
Assemblies: 66245<R>/3-66245<R> or 66480<R>/3-66480<R> – A14, A15
This section provides instructions for replacing the Port Coupler in the test set. There are two Port Couplers,
A14 and A15, installed in the test set. Refer to
Figure 5-2 on page 5-3 for physical locations.
A14 Replacement
1. Remove the top cover from the test set as instructed in Section 5-3 .
2. Remove the A8 Diplexer Assembly as instructed in Section 5-13 .
3. Replace the A14 Port Coupler Assembly as illustrated in Figure 5-21 .
Note
De-soldering of the DC Bias wires from the A8 Diplexer Assembly is not required. Use Anritsu
01-201 Torque Wrench to tighten all RF connectors when installing the module.
1. Remove the Test Port Connector, the Port Connector Nut, and the Thrust Washer from the front panel.
2. Disconnect the RF cable from the A14 coupled port. Remove the coupler mounting screws using a right angle
Phillips screwdriver. (If a right angle driver is not available the front panel must be removed to gain access to
forward screw on the coupler.)
3. Remove the A14 Coupler from the chassis and separate the spacer from the front of the coupler.
4. Installation is the reverse of removal. When installing the test port connector, torque to 15 lbfꞏin using a torque
wrench.
Figure 5-21. A14 Port Coupler Assembly
1 2
3
A14