Removing And Replacing The A25 And A26 60-Db Source Step Attenuators (Option 1E1) - Agilent Technologies N5230A Service Manual

Repair and Replacement Procedures

Removing and Replacing the A25 and A26 60-dB Source Step Attenuators (Option 1E1)

Removing and Replacing the A25 and A26 60-dB Source
Step Attenuators (Option 1E1)
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 7-13
1. Disconnect the power cord.
2. Remove the outer cover. Refer to
analyzer bottom side up.
3. Disconnect the ribbon cable (item
4. Using a 5/16-inch wrench, disconnect the semi-rigid cables (item
attenuator.
5. With a T-10 TORX driver, loosen the mounting screws (item
frame. It is not necessary to completely remove the mounting screws.
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 them.
6. Slide the attenuator upward to release the mounting screws and remove the attenuator
from the analyzer. Observe the
Replacement Procedure
1. Remove the mounting screws from the defective attenuator and insert them loosely into
the new attenuator.
2. Reverse the order of the removal procedure.
3. Perform the post-repair adjustments, verifications, and performance tests that pertain
to this removal procedure. Refer to
7-30
for this procedure.
"Removing the Covers" on page
①
) from the step attenuator.
CAUTION
Table 7-2 on page
PNA Series Microwave Network Analyzers
③
above.
7-45.
N5230A
7-6. Position the
②
) from the step
) in the analyzer side
Service Guide N5230-90014