Adjusting The Red And Blue Focus - Sony VPH-D50HTU Installation Manual

Adjusting the Focus

Adjusting the Red and Blue Focus

3 Adjusting the red lens focus
4 Adjusting flapping of the red lens
64
(GB) Adjustments
1
Reset the centering adjustment data of the red 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 B keys to display the red signal only.
4
Loosen the R1 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 R2 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 red focus adjustment is completed.
Proceed to adjust flapping of the red lens.
After adjusting the red lens focus, adjust flapping of the red lens (angle of
the red 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 red CRT.
For details, see "Adjusting flapping of the green lens" on page 62 (GB).
Proceed to the blue lens focus adjustment if the red signal is
completely in focus.