453
Assembly Replacement Procedures
RF Area
Replacement
1. Refer to Figure 14-11. Place the switch onto the bracket and replace the
four screws (3). Torque to 9 inch-pounds in the sequence shown, starting
with #1.
2. Place the switch/bracket into place into the chassis and replace the two
screws. Torque to 9 inch-pounds starting with the screw closest to the
front of the instrument.
3. Refer to Figure 14-10. Replace the semi-rigid cables W3, W8, and W9.
Torque to 10 inch-pounds.
NOTE W8 will not be present in instruments with Option 503.
4. Replace the ribbon cable W18.
5. Refer to Figure 14-9. Position the chassis side, right onto the chassis and
replace the thirteen screws. Torque to 9 inch-pounds.
6. Replace the front panel. Refer to the Front Frame Assembly replacement
procedure.
7. Replace the top brace. Refer to the Top Brace and Reference Bracket
replacement procedure.
8. Replace the instrument outer case. Refer to the Instrument Outer
Casereplacement procedure.
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