Keysight N5221A/22A Service Guide 7-35
Repair and Replacement Procedures
Removing and Replacing the A22 Splitter
Removing and Replacing the A22 Splitter
Tools Required
— T-10 TORX driver (torque to 9 in-lb or 1.02 N.m)
— T-20 TORX driver (torque to 21 in-lb or 2.38 N.m)
— 5/16 inch open-end torque wrench (torque to 10 in-lb or 1.13 N.m)
— ESD grounding wrist strap
Removal Procedure
Refer to Figure 7-15 for this procedure.
1. Disconnect the power cord.
2. Remove the outer cover. Refer to “Removing the Covers” on page 7-6.
3. Position the analyzer bottom side up.
4. Disconnect cable W42 at the A22 splitter connection.
5. Remove cable W43 from between the A22 splitter and the A23 mixer brick.
6. Remove cable W44 from between the A22 splitter and the A24 mixer brick.
7. Remove two screws (item
①) from the A22 splitter and lift the splitter out
of the analyzer.
Replacement Procedure
1. Reverse the order of the removal procedure.
Torque all RF cable connections to 10 in-lbs.
2. Perform the post-repair adjustments, verifications, and performance tests
that pertain to this removal procedure. Refer to Table 7-2 on page 7-60.
Be careful not to damage the center pins of the semirigid cables. Some
flexing of the cables is necessary to remove assemblies but do not
over-bend them.
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