Keysight N5227A - Removing and Replacing the A26 Splitter

7-28 Service Guide N5227-90001
Repair and Replacement Procedures PNA Series Microwave Network Analyzers
Removing and Replacing the A26 Splitter N5227A
Removing and Replacing the A26 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 7-8 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 W62 at the A26 splitter connection.
5. Remove cable W63 from between the A26 splitter and the A27 mixer brick.
6. Remove cable W64 from between the A26 splitter and the A28 mixer brick.
7. Remove two screws (item
①
) from the A26 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 7-54.