Removing And Replacing The A21 And A22 Test Port Couplers And Coupler Mounting Brackets; Tools Required - Agilent Technologies N5230A Service Manual

Repair and Replacement Procedures

Removing and Replacing the A21 and A22 Test Port Couplers and Coupler Mounting Brackets

Removing and Replacing the A21 and A22 Test Port
Couplers and Coupler Mounting Brackets

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 7-12
1. Disconnect the power cord.
2. Remove the outer cover. Refer to
analyzer bottom side up.
3. Identify the test port coupler to be removed.
4. With a 5/16 inch wrench, disconnect the semirigid cables (item
coupler.
5. With a T-15 TORX driver, remove the mounting screws (item
coupler.
6. With a 1 inch wrench, remove the test port coupler dress nut (item
panel. Be careful not to scratch the front panel.
CAUTION Be careful not to damage the center pins of the semirigid cables. Some flexing
of the cables is necessary to remove the assembly. Do not over-bend them.
7. Remove the test port coupler from the analyzer. Observe the
8. The test port coupler mounting block can now be removed by removing the attachment
④
screws (item ). It is not necessary to remove the mounting block to replace the coupler.
Replacement Procedure
1. Reverse the order of the removal procedure.
2. Perform the post-repair adjustments, verifications, and performance tests that pertain
to this removal procedure. Refer to
7-28
for this procedure.
"Removing the Covers" on page
Table 7-2 on page
PNA Series Microwave Network Analyzers
7-6. Position the
①
) from the test port
②
) from the test port
③
) from the front
above.
CAUTION
7-45.
Service Guide N5230-90014
N5230A