Agilent Technologies E4440A, Service Manual

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Chapter 11 323
Assembly Replacement Procedures
RF Section E4440A, E4443A, E4445A
5. To remove the YTO, remove the two bottom screws that attach it to
the bracket. To remove the RYTHM, remove the four screws.
CAUTION
When you remove the two screws that attach the YTO to the bracket,
the YTO will become detached from the YTO can. Take care to hold the
complete YTO assembly while removing these screws.
Replacement
1. Carefully place the YTO or RYTHM into the bracket.
2. Using the T-10 driver, replace the screws to attach the device to the
bracket. Torque to 9 inch pounds.
3. Place the bracket into the RF section. Replace the three screws to
attach the bracket to the RF section. Torque to 9 inch pounds.
4. Replace the cables to the correct locations. Torque the semi-rigid
cables to 10 inch pounds.
5. Replace the ribbon cables to the YTO and RYTHM.
A21 SLODA
Removal
1. Refer to Figure 11-9 . Remove the semi-rigid cables W24, W35, W38,
and W41.
2. Refer to Figure 11-10 . Remove the two wire harnesses from the
SLODA.
3. Using the T-10 driver, remove the 2 screws
(2)
.
4. The SLODA can now be removed from the RF section.
Replacement
1. Place the SLODA in place on the bracket in the RF section.
2. Using the T-10 driver, replace the 2 screws. Torque to 9 inch pounds.
3. Reattach the wire harnesses to the SLODA.
4. Replace the cables to the correct locations. Torque the semi-rigid
cables to 10 inch pounds.
FL1 Low Pass Filter
Removal
1. Refer to Figure 11-8 . Hold the FL1 lowpass filter
(8)
with a 7/16”
open-end wrench while loosening semi-rigid cables W36 and W37.