Sony VPH-D50HTU Installation Manual page 62

Adjusting the Focus
2 Adjusting flapping of the green lens
62
(GB) Adjustments
After finishing the lens focus adjustment, adjust flapping of the green lens
(angle of the green CRT) so that the upper and lower parts, and the left and
right parts of the screen are equally in focus.
1
Place a white paper over the front of the screen. Note whether the focal
surfaces on the upper, lower, left and right parts of the screen appear to
be leaning forward or backward.
H H H H H H H H H H H H H H H H
H H H H H H H H H H H H H H H H
H H H H H H H H H H H H H H H H
H H H H H H H H H H H H H H H H
H H H H H H H H H H H H H H H H
H H H H H H H H H H H H H H H H
H H H H H H H H H H H H H H H H
H H H H H H H H H H H H H H H H
H H H H H H H H H H H H H H H H
H H H H H H H H H H H H H H H H
H H H H H H H H H H H H H H H H
H H H H H H H H H H H H H H H H
H H H H H H H H H H H H H H H H
H H H H H H H H H H H H H H H H
H H H H H H H H H H H H H H H H
H H H H H H H H H H H H H H H H
2
Adjust the focus on the upper and lower parts with the V screw on the
green CRT using the supplied tool.
Loosen the screw for fixing the washer a, then turn the V screw b.
Make sure to tighten the screw to fix the washer after adjustment.
Note
Normally, adjust only the V screw for the green CRT. Adjusting the H screw is
required only for non-standard installation.
For flapping adjustments of the red and blue lenses, adjust both the H and V
screws.
a
b
H screw
V screw