Removing And Replacing The A23 And A24 Soma 70S - Agilent Technologies PNA Series Service Manual

Repair and Replacement Procedures

Removing and Replacing the A23 and A24 SOMA 70s

Removing and Replacing the A23 and A24 SOMA 70s
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 7-20
1. Disconnect the power cord.
2. Remove the outer cover. Refer to
analyzer bottom side up as shown. It may be convenient to raise the receiver deck to
provide better access. If necessary, refer to
on page 7-8.
3. Identify the SOMA 70 to be removed.
4. Disconnect the ribbon cable (item
5. With a 5/16-inch torque wrench, disconnect the three semirigid cables (item
the SOMA 70.
6. Remove the flexible cable (item
7. With a T-10 TORX driver, remove the four mounting screws (item
Be careful not to damage the center pins of the semirigid cables. Some flexing
CAUTION
of the cables is necessary to remove the assembly. Do not over-bend the
semirigid cables.
8. Remove the SOMA 70 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
7-44
for this procedure.
"Removing the Covers" on page
①
) from the appropriate SOMA 70.
③
) from the SOMA 70.
Table 7-2 on page
PNA Series Microwave Network Analyzers
"Raising and Removing the Receiver Deck"
above.
CAUTION
7-66.
Service Guide E8361-90001
E8361A
7-6. Position the
②
) from
④
).