Adjusting The Blue Lens Focus And Scheimpflug - Sony VPH-G90E Installation Manual

Adjusting the Lens Focus and Scheimpflug

Adjusting the Blue Lens Focus and Scheimpflug

1 Adjusting the blue lens focus
2 Adjusting the blue magnetic focus and AQP/DQP roughly, if necessary
3 Adjusting the blue scheimpflug
4 Adjusting the blue lens focus precisely
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1
Reset the centering adjustment data of the blue signal.
For details, see "Resetting the Data" on page 138
2
Press the PATTERN key until the H-pattern or ME-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 "1 Adjusting the green lens focus" on page 81
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.
The magnetic focus and AQP/DQP will be adjusted precisely after the lens
focus and scheimpflug adjustments. Adjust the blue magnetic focus and
AQP/DQP roughly at this stage to make the later adjustments easily.
For details of the magnetic focus and AQP/DQP adjustments, see page 87
After adjusting the blue lens focus, adjust the blue scheimpflug (angle of
the blue CRT).
Check the tilt of the focal planes 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 "3 Adjusting the green scheimpflug" on page 83
After adjusting the blue scheimpflug, readjust the blue lens focus until the
perfect focus is obtained.
For the procedure of the adjustment, see "1 Adjusting the green lens focus" on
page 81 .
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Proceed to adjust the green magnetic focus and AQP/DQP.
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