Chapter 11 333
Assembly Replacement Procedures
RF Section E4440A, E4443A, E4445A
Top Switch Replacement
NOTE The replacement switch will not have the metal EMI shield installed.
The shield is p/n E4440-00055. This shield is only used on the top
switch.
1. Position the standoffs over the bottom switch mounting holes.
Position the replacement top switch with the label up, and install
the mounting screws.
2. Reconnect W84, W86 and W87 by matching the cable information
bands to the switch connector designators. Torque to 10 in-lbs.
3. Refer to Figure 11-19. Re-solder the wires removed earlier.
4. Attach the adhesive EMI shield to the top of the switch. Figure 11-20
shows the proper position of the shield. Assure the switch port
numbers are not covered.
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