Removing And Replacing The A33 Reference Mixer Switch - Agilent Technologies N5242A Service Manual

Repair and Replacement Procedures

Removing and Replacing the A33 Reference Mixer Switch

Removing and Replacing the A33 Reference Mixer Switch
Tools Required
• T-10 TORX driver (set to 9 in-lb)
• T-15 TORX driver (set to 14 in-lb)
• T-20 TORX driver (set to 21 in-lb)
• 5/16 inch open-end torque wrench (set to 10 in-lb)
• 1 inch open-end torque wrench (set to 72 in-lb)
• ESD grounding wrist strap
Removal Procedure
Refer to Figure 7-19
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
3. Position the analyzer bottom side up.
4. Disconnect four semirigid cables (item
5. Remove three screws (item
the test set deck.
6. Move the disconnected semirigid cables out of the way and lift the A33 reference mixer
switch and mounting bracket out of the analyzer.
7. Disconnect the wire harness cable (item
8. Remove four screws (item
mounting bracket.
Replacement Procedure
1. Reverse the order of the removal procedure.
When reinstalling the A33 reference mixer switch into the analyzer, loosely install the
three mounting screws (item
the connectors to 10 in-lbs, then tighten the three mounting screws.
2. Perform the post-repair adjustments, verifications, and performance tests that pertain
to this removal procedure. Refer to
7-40
for this procedure.
"Removing the Covers" on page
②
) that secure the A33 reference mixer switch to the side of
④
) that attach the A33 reference mixer switch to its
②
). Connect the four semirigid cables (item
Table 7-2 on page
PNA Series Microwave Network Analyzers
①
) from the A33 reference mixer switch.
③
) from the A33 reference mixer switch.
7-64.
N5242A
7-6.
①
) and torque
Service Guide N5242-90001