Removing And Replacing The A22 Splitter - Keysight N5221A Service Manual

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.
CAUTION 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.
1. Disconnect the power cord.
2. Remove the outer cover. Refer to
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
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
7-32
"Removing the Covers" on page
①
) from the A22 splitter and lift the splitter out of the analyzer.
7-56.
PNA Series Microwave Network Analyzers
7-6.
Service Guide N5222-90001
N5221A/22A