Sony VPH-D50HTU Installation Manual page 65

5 Adjusting the blue lens focus
6 Adjusting flapping of the blue lens
1
Reset the centering adjustment data of the blue signal.
For details, see "Resetting the data" on page 99 (GB).
2
Press the PATTERN key until the H-pattern is displayed.
3
Press the CUT OFF G and R keys to display the blue signal only.
4
Loosen the B1 screw, slide it so that the letters H at the center of the
screen are in focus, then tighten the screw.
For details, see "Adjusting the green lens focus" on page 60 (GB).
5
Loosen the B2 screw, slide it so that the letters H at all four corners of
the screen are in focus, then tighten the screw.
Repeat steps 4 and 5 until the blue focus adjustment is completed.
Proceed to adjust flapping of the blue lens.
After adjusting the blue lens focus, adjust flapping of the blue lens (angle
of the blue CRT).
Check the tilt of the focal surfaces at the upper, lower, left and right parts
of the screen, then adjust the focus with the H and V screws on the blue
CRT.
For details, see "Adjusting flapping of the green lens" on page 62 (GB).
Proceed to adjust the registration if the blue signal is
completely in focus.
65
Adjustments (GB)