Make sure that sub-contrast adjustment was finished prior to perform this adjustment
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Apply a 1080i pattern or signal
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In service mode adjust R DR and B DR data to 80.
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In service mode adjust TINT data so that the color does not become greenish or redish.
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In service mode adjust COLOR data so that the color level is not too high (saturated) or too low (tending to black and white).
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In service mode adjust B-Y G data so that blue and green seem natural.
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confirm that saturation and picture are normal (normal image).
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If image is not satisfactory, repeat adjustment until the image is normal and natural.
NOTE
The image can be compared against other set to see the image quality.