7-54
Service Guide E8364-90001
Repair and Replacement Procedures
PNA Series Microwave Network Analyzers
Removing and Replacing the A36 and A37 60-dB Step Attenuators (Option UNL)
E8362A, E8363A, E8364A
Removing and Replacing the A36 and A37 60-dB Step
Attenuators (Option UNL)
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
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
if necessary.
3. Identify the step attenuator to be removed. To replace the attenuator, the bracket
holding the attenuator, detector (E8363A/E8364A) or fixed pad (E8362A)), and bias tee
must be removed.
4. Disconnect the ribbon cable (item
①
) from the appropriate attenuator.
5. With a 5/16-inch torque wrench, disconnect the two semirigid cables (item
②
) from the
appropriate step attenuator, two semirigid cables (item
③
) from the detector (or fixed
pad), and two semirigid cables (item
④
) from the bias tee.
6. Disconnect the stranded control cable (item
⑤
) and the flexible cable (item
⑥
) from the
appropriate detector (E8363A/E8364A only) and the stranded bias tee cable (item
⑦
)
from A16 test set motherboard. (Release the bias tee cable such that it can be removed
with the bias tee.)
7. With a T-10 TORX driver, remove the three mounting screws (item
⑧
) from the bracket
holding the attenuator, detector (or fixed pad), and bias tee.
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.
8. Remove the bracket from the analyzer with the attenuator, detector (or fixed pad), and
bias tee attached. Observe the
CAUTION
above.
9. Remove the attenuator from the bracket and install the new attenuator.
Replacement Procedure
1. Reverse the order of the removal procedure using the existing attenuator ribbon cable.
2. Perform the post-repair adjustments, verifications, and performance tests that pertain
to this removal procedure. Refer to
.
Summary of Contents for E8362A
Page 11: ...Service Guide E8364 90001 1 1 1 Safety and Regulatory Information ...
Page 19: ...Service Guide E8364 90001 2 1 2 General Product Information ...
Page 29: ...Service Guide E8364 90001 3 1 3 Tests and Adjustments ...
Page 79: ...Service Guide E8364 90001 4 1 4 Troubleshooting ...
Page 139: ...Service Guide E8364 90001 5 1 5 Theory of Operation ...
Page 169: ...Service Guide E8364 90001 6 1 6 Replaceable Parts ...
Page 215: ...Service Guide E8364 90001 7 1 7 Repair and Replacement Procedures ...
Page 287: ...Service Guide E8364 90001 A 1 A Error Terms ...
Page 303: ...Service Guide E8364 90001 B 1 B Option Enable Utility ...
Page 309: ...Service Guide E8364 90001 C 1 C Firmware Upgrades ...
Page 313: ...Service Guide E8364 90001 D 1 D Operating System Recovery ...