Chapter 11 349
Assembly Replacement Procedures
RF Section E4446A, E4447A, E4448A
Figure 11-28 Option 110 Front View
Option 110 A36 Preamplifier
Removal
1. Drop the front frame. See page 314 for instructions.
2. Refer to Figure 11-27. Remove cables W103, and W104 with AT3.
Remove all the wires from the A36 Preamplifier.
3. Refer to Figure 11-28. Remove the three screws (1) and lift the
preamplifier and bracket from the instrument.
4. Remove the wire from the ground lug of the preamplifier.
5. Refer to Figure 11-29. To separate the preamplifier from the bracket,
remove the four screws from the back of the bracket.
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