Pioneer RM-V2400NA Technical Manual page 88

ADJUSTMENTS
H BLK R Adjustment
Output all three colors R, G, B, observe
the right side of the screen , and adjust with H BLK R so
that the color stops deviating.
H BLK L adjustment
Output all three colors R, G, B, observe the
left side of the screen , and adjust with H BLK L so that
the color stops deviating.
NOTE
There are points at which the screen does not move even through the H BLK L value changes. This is not a malfunction.
RGB
When H BLK R adjustment is not properly performed
Observe here
RGB
RGB
Observe here
BGR
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