VDC Display Systems MARQUEE 8521 Ultra Green User Manual page 18

Step 5. Press [◄] or [►] to adjust keystone until the width at the
top of the picture is equal to the width at the bottom.
Step 6. Press [◄] or [►] to adjust side pincushion until the left and
right sides of the picture are straight and not curved.
Step 7. Press [▲] or [▼] to adjust vertical bow until the horizontal line at the middle of the picture is
straight. Press [◄] or [►] to adjust horizontal bow so that the vertical line at the middle of the
picture is straight.
Before
Step 8. Press [▲] or [▼] to adjust top pincushion until the horizontal line at the top of the picture is
straight and not curved. Press [◄] or [►] to adjust top keystone so that the top edge is level.
Before Before
Step 9. Press [▲] or [▼] to adjust bottom pincushion until the horizontal line at the bottom of the
picture is straight and not curved. Press [◄] or [►] to adjust bottom keystone so that the
bottom edge is level.
Before
Step 10. Adjust C linearity as follows:
⇒ Press [▲] or [▼] until the horizontal line through the center of the crosshatch is equally distant
from the lines at the very top and bottom.
⇒ Press [◄] or [►] until the center of the crosshatch is equally distant from the vertical lines at
the left and right edges.
Step 11. Adjust S linearity as follows:
⇒ Press [▲] or [▼] until the height of each
crosshatch square is equal from the top
to the bottom.
⇒ Press [◄] or [►] until the width of each
crosshatch square is equal from the left
to the right.
Display Systems
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Section 2
2-7