Sony VPH-G90U Service Manual page 98

Adjusting the Registration
4
Adjust the distortion of the horizontal line on the top with the v and V
keys.
Only the red line moves.
5
Repeat the adjustment with the KEY or PIN key and the v and V keys
until the red horizontal line on the top converges with the green line.
B Horizontal line adjustment at the bottom
1
Press the KEY key and press the POSITION + key once.
The projector enters the lower keystone adjustment mode (POSITION
No. 2) of the red signal.
2
Adjust the distortion of the horizontal line at the bottom 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.
3
Press the PIN key and press the POSITION + key once.
The projector enters the lower pincushion adjustment mode
(POSITION No. 2) of the red signal.
4
Adjust the distortion of the horizontal line at the bottom 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 left and right ends of the horizontal line curve downward while
the center remains unchanged.
5
Repeat the adjustment with the KEY or PIN key and the v and V keys
until the horizontal line at the bottom converges with the green line.
114
Adjustments
V : The left and right ends of the horizontal line curve
upward while the center remains unchanged.
v : The left and right ends of the horizontal line curve
downward while the center remains unchanged.
C Vertical line adjustment at the left side
1
Press the KEY key and press the POSITION + key once.
The projector enters the left keystone adjustment mode (POSITION
No. 3) of the red signal.
2
Adjust the distortion of the vertical line at the left side with the B and
b keys.
B :The vertical line rotates counter-clockwise,
rotating around the center.
b :The vertical line rotates clockwise, rotating around
the center.
3
Press the PIN key and press the POSITION + key once.
The projector enters the left pincushion adjustment mode (POSITION
No. 3) of the red signal.
4
Adjust the distortion of the vertical line at the left side with the B and
b keys.
B :The upper and lower ends of the vertical line
curve towards the left while the center remains
unchanged.
b :The upper and lower ends of the vertical line
curve towards the right while the center remains
unchanged.
5
Repeat the adjustment with the KEY or PIN key and the B and b keys
until the vertical line at the left side converges with the green line.
115
Adjustments