7-32 Service Guide N5242-90001
Repair and Replacement Procedures PNA Series Microwave Network Analyzers
Removing and Replacing the A22 Splitter N5242A
Removing and Replacing the A22 Splitter
Tools Required
• T-10 TORX driver (set to 9 in-lb)
• T-20 TORX driver (set to 21 in-lb)
• 5/16 inch open-end torque wrench (set to 10 in-lb)
• ESD grounding wrist strap
Removal Procedure
Refer to Figure 7-15 for this procedure.
CAUTION
Be careful not to damage the center pins of the semirigid cables. Some flexing
of the cables is necessary to remove the assembly. However, do not over-bend
the semirigid cables.
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 7-64.
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