Sony VPH-G90E Installation Manual page 111

9 Red SKEW and BOW adjustments
A Horizontal line adjustment
If the horizontal line of the picture is as shown by the dotted line in the
illustrations below, adjust it with the corresponding arrow key so that it is
perpendicular to the vertical line (bold line illustrated on the left).
1
Press the BOW key.
The CROSS HAIR pattern appears.
You can also change to the 9 × 9 HATCH pattern by pressing the
PATTERN key.
2
Reset the FINE bow data.
See "Resetting the Data" on page 138
3
Adjust the distortion as illustrated below with the V and v keys.
V : The left and right ends of the horizontal line curve
upward while the center remains unchanged.
v : The right and left ends of the horizontal line curve
downward while the center remains unchanged.
4
Press the SKEW key.
5
Reset the FINE skew data.
See "Resetting the Data" on page 138
6
Adjust the distortion as illustrated below with the V and v keys.
V : The horizontal line rotates counter-clockwise,
rotating around the center.
v : The horizontal line rotates clockwise, rotating
around the center.
7
Repeat steps 1 to 6 until the red horizontal line converges with the
green line.
Each time you press the BOW or SKEW key, the COARSE mode and
FINE mode are selected alternately, and you can use the two modes
appropriately. The adjustment data is stored for each mode separately.
While you hold down the arrow key in the FINE mode, "f" is
displayed around the adjustment position.
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Adjustments
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