Pioneer RM-V2550 Manual page 119

ADJUSTMENTS
Confirming the optimum H BLK L, H BLK R values
Optimum H BLK R value
OSD display
Movement on screen
B
A
When point A is lowered by point convergence, point B should not move.
Confirming the Optimum H BLK L Value
D
C
When point C is lowered by point convergence, point D should not move.
(Note)
Convergence can be adjusted even if the optimum values are slightly different from the above optimum values
during adjustments.
But, if the screen changes markedly, re-adjust H BLK L or H BLK R, and adjust the convergence.
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