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I would do the video part of the adjustment procedure (without actually adjusting anything) to check the sweep geneator. I dont have the procedure to look at, but probably if you inject sweep with a marker at the mixer grid, and pick up the signal for the scope coming off the video detector with a dierct probe, or just a piece of coax with a 47k resistor in series you shold be able to come up with something looking like an IF curve to verify operation of the sweep generator.
John
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