Panasonic PT-EW630UL

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Optical Adjustments
2. Contrast adjustment
1 Select the internal test pattern signal “All black” from the projector’s menu “Menu -> Setting -> Test pattern”.
2 Turn the lever of polarized glass to obtain the darkest brightness and proper black color uniformity on the screen.
* This adjustment should be taken in order of G-panel, R-panel and B-panel.
* This adjustment should be taken in the dark room to adjust precisely.
Lever
(Polarized glass)