Apple Studio Display - Page 149

Adjustments Diagnostic Adjustments - 21
6 With the room lights
dimmed, use a plastic
screwdriver to slowly
adjust the Screen control
so that the leftmost bar
is completely black.
7 Adjust the Screen
control so the second
bar appears as black as
the leftmost bar. Then
adjust so the second bar
can be distinguished
from the leftmost bar,
but the leftmost bar
remains black. Only the
leftmost bar should be
completely black.