JVC RSAL3 manual Tuning in Lens Tilt and Shift, Advanced Adjustment Option

TUNING IN LENS TILT AND SHIFT

This is the core step of the setup so please be patient!

•Select "Lens => Shift" and move the image vertically so that it appears to be vertically centered on the screen. The image may still be somewhat cut off by the lens during initial stages.

•Loosen the two Lens Adjustment Screws and slide the RSAL3 lens up or down until it does not block the beam. Note that this will likely move the image vertically off the screen. Make sure the Lens Adjustment Screws are roughly even in their vertical slot position or the image will show an irregular geometry from right to left.

Repeat steps until the image is vertically centered on the screen and the beam is passing through the center of the RSAL3 lens.

ADVANCED ADJUSTMENT OPTION

It is possible that some residual color separation may exist in the center of the image at the pixel level. While this will be very difficult to see, it is possible to make further adjustments to totally eliminate this at the center of the image and to minimize it at the top and bottom of the image. To do so, it is preferable to have a white grid test pattern on a black background. This test pattern is not available through the projector so an external source will be necessary such as an image processor or test pattern DVD. It is also extremely helpful to be familiar with the pixel offset controls of the projector and to use these controls to begin with the best image possible. An experienced installer may choose to apply the following steps in combination with the pixel offset controls for the most flexibility.

•Loosen the large screws that hold the RSAL3 lens in its bracket so that it is free to tilt. At this point it will be supported by the Fine Tilt Adjustment screw.

•Turn the Fine Tilt Adjustment screw in whichever direction is necessary to minimize any residual color separation at the center of the image. Note that this will slightly shift the image in the vertical direction.

•Use the remote and select "Lens => Shift" to center the image vertically on the screen. If the amount of shift is significant you may need to loosen the Lens Adjustment screws and slide the lens vertically to center the beam in the lens (Note: this will bring back a slight bit of color separation to the center of the image, but less than existed before).

Repeat steps until the image is vertically centered on the screen and the center of the image is free of any color separation then tighten the Lens attachment screws.

Fine tune the zoom setting to slightly overscan onto the screen border to insure there are no gaps between the full projector image and the screen. Finish by fine tuning the focus.

PROJECTOR SETTINGS WHEN USING THE RSAL3

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Ver. 1.0 05042010