Removing And Replacing The A25 And A26 Test Port Couplers - Agilent Technologies PNA Series Service Manual

Repair and Replacement Procedures

Removing and Replacing the A25 and A26 Test Port Couplers

Removing and Replacing the A25 and A26 Test Port
Couplers
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)
• 1-inch open-end torque wrench (set to 72 in-lb)
• ESD grounding wrist strap
Removal Procedure
Refer to Figure 7-21
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. Identify the test port coupler to be removed.
4. With a 5/16-inch torque wrench, disconnect the two semirigid cables (item
test port coupler.
5. With a 1-inch torque wrench, remove the test port coupler nut (item
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 the
semirigid cables.
6. Remove the test port coupler 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
7-46
for this procedure.
"Removing the Covers" on page
Table 7-2 on page
PNA Series Microwave Network Analyzers
if necessary.
CAUTION
7-66.
Service Guide E8361-90001
E8361A
7-6. Position the
"Raising and
①
) from the
②
) from the front
above.