E8257D/67D, E8663D PSG Signal Generators Service Guide 313
Assembly Replacement
A24 20 GHz Highband Coupler (Options 503, 509, 513, 520, and 521)
7. Using the T–10 driver, remove the two screws that attach the coupler to
the side panel.
8. Remove the A24 20 GHz Highband Coupler.
Replacement Procedure
1. Reverse the order of the removal procedure.
2. Torque all T–10 screws to 9 in–lbs.
3. Torque all RF connectors to 8 in–lbs.
4. Perform the post–repair adjustments and performance tests that pertain
to this removal procedure.
Figure 3-30 A24 20 GHz Highband Coupler (Options 503, 509, 513, and 520 – Standard)
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