338 Chapter 11
Assembly Replacement Procedures
RF Section E4446A, E4447A, E4448A
Replacement
1. Position the RF section in the slots in the deck. Gently slide it down,
making sure that no cables get caught.
2. Using the T-10 driver, replace the 4 screws. Torque to 9 inch pounds.
3. Replace the cables to the correct locations. Torque the semi-rigid
cables to 10 inch pounds including the W9 cable at the input
attenuator.
4. Replace the cable hold-down. Torque the single screw to 10 inch
pounds.
5. Refer to Figure 11-22. Replace the ribbon cables to the correct
locations.
Figure 11-22 RF Section Ribbon Cable Locations - E4446A, E4447A, E4448A