Removing And Replacing The A45 And A46 Reference Channel Transfer Switches (Option 081) - Agilent Technologies E8362C Service Manual

Pna series microwave network analyzers
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Repair and Replacement Procedures

Removing and Replacing the A45 and A46 Reference Channel Transfer Switches (Option 081)

Removing and Replacing the A45 and A46 Reference Channel Transfer
Switches (Option 081)
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 7-26
for this procedure.
1. Disconnect the power cord.
2. Remove the outer cover. Refer to
up and raise the receiver deck as shown. Refer to
3. Identify the switch assembly to be removed. If removing A45, go to step 4. If removing A46, perform the
following steps first.
a. Remove the A43 receiver step attenuator, if present. Refer to
A44 35-dB Receiver Step Attenuators (Option 016)" on page
b. Remove the A25 test port coupler. Refer to
Couplers" on page
4. Disconnect the stranded control cable (item
connector.
5. With a 5/16-inch torque wrench, disconnect the three semirigid cables (item
reference channel switch.
6. With a T-10 TORX driver, remove the four mounting screws (item
screws (item
) holding the A45 mounting bracket.
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.
7. Remove A45 or A46 from the analyzer. Observe the
8. With a T-10 TORX driver, remove the four mounting screws (item
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
Table 7-2 on page
7-72
"Removing the Covers" on page
"Removing and Replacing the A25 and A26 Test Port
7-50.
) by pressing the release button in the center of the
7-82.
PNA Series Microwave Network Analyzers
7-6. Position the analyzer bottom side
"Raising the Receiver Deck" on page 7-8
"Removing and Replacing the A43 and
7-70.
) holding A46 or the two mounting
above.
CAUTION
) holding A45 to the bracket.
E8362C, E8363C, E8364C
if necessary.
) from the A45 or A46
Service Guide E8364-90038

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