Sony VPH-D50Q Manuel D'installation page 84

Adjusting the Registration
9 Red KEY (keystone) and PIN (pincushion) adjustments
84
(EN) Adjustments
A Horizontal line adjustment
If the picture's borders are as shown by the dotted line in the illustrations
below, adjust them with the corresponding arrow key so that they are
parallel (bold lines illustrated on the left).
1
Press the KEY key.
The HATCH pattern appears.
2
Adjust the distortion as illustrated below with the V and v keys.
V : The lines spread apart on the right side and come
together on the left side while the center remains
unmoved.
v : The lines spread apart on the left side and come
together on the right side while the center remains
unmoved.
3
Press the PIN key.
4
Adjust the distortion as illustrated below with the V and v keys.
V : The ends of the top and bottom lines spread apart
while the center remains unmoved.
v : The ends of the top and bottom lines come
together while the center remains unmoved.
5
Repeat steps 1 to 4 until the red horizontal lines converge with the
green lines.