7-34 Service Guide E8364-90026
Repair and Replacement Procedures PNA Series Microwave Network Analyzers
Removing and Replacing the A18 MA 20 E8362B, E8363B, E8364B
Removing and Replacing the A18 MA 20
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 7-14 for this procedure.
1. Disconnect the power cord.
2. Remove the outer cover. Refer to “Removing the Covers” on page 7-6. Position the
analyzer bottom side up and raise the receiver deck as shown. Refer to “Raising and
Removing the Receiver Deck” on page 7-8 if necessary.
3. With a 5/16-inch torque wrench, disconnect the two semirigid cables (item
①) from the
A18 MA 20. It may be necessary to remove these cables completely to allow the
A18 MA 20 to be removed from the analyzer.
4. Disconnect the ribbon cable (item
②) at the A18 MA 20.
5. With a T-10 TORX driver, remove the four mounting screws (item
③) from the side of
the analyzer.
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 A18 MA 20 from the analyzer. Observe the
CAUTION above.
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 7-80.
To Next Page
Loading...
Need help?
General
