Removing And Replacing The A22 Switch - Agilent Technologies PNA Series Service Manual

Repair and Replacement Procedures

Removing and Replacing the A22 Switch

Removing and Replacing the A22 Switch
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 7-19
1. Disconnect the power cord.
2. Remove the outer cover. Refer to
analyzer bottom side up and raise the receiver deck as shown. Refer to
Removing the Receiver Deck" on page 7-8
3. Disconnect the stranded switch control cable (item
4. With a 5/16-inch torque wrench, disconnect the three semirigid cables (item
5. With a T-10 TORX driver, remove the two mounting screws (item
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 the
semirigid cables.
6. Remove the A22 switch from the analyzer. Observe the
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
7-42
for this procedure.
"Removing the Covers" on page
Table 7-2 on page
PNA Series Microwave Network Analyzers
if necessary.
①
) from the A22 switch.
CAUTION
7-66.
Service Guide E8361-90001
E8361A
7-6. Position the
"Raising and
②
).
③
).
above.