Pioneer RM-V2550 Manual page 118

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.
108
RGB
When H BLK R adjustment is not properly performed
Observe here
RGB
BGR
RGB
Observe
here