Runco D-73D operation manual Too Low Correct position Too High

Installation

•Vertical Position (Y-adjust):Loosen the Height/Pitch Adjustment Knobs (Whitney anamorphic lens; see Figure 3-26)or Button-head Height Adjustment Screws (Shasta anamorphic lens; see Figure 3-27)on either side of the lens. Then, slowly move the anamorphic lens into place so that there are no shadows on the top or bottom of the screen:

Too Low

Correct position

Too High

When the vertical position is properly set, tighten the Height/Pitch Adjustment Knobs or

Button-head Height Adjustment Screws to secure the lens in place.

•Adjusting the Pitch (Angle): Next, angle the lens to eliminate any top-to-bottom pincushion distortion. To do this, loosen the Height/Pitch Adjustment Knobs (Whitney anamorphic lens; see Figure 3-26)or Button-head Pitch Adjustment Screws (Shasta anamorphic lens; see Figure 3-27)on either side of the lens to allow it to pivot freely. Then, adjust the anamorphic lens angle so that the projected image is rectangular:

Correct Lens Angle

Incorrect Lens Angle

The anamorphic lens will almost always be angled with respect to the projector; this is normal.

Once the proper lens angle has been set, firmly tighten the Height/Pitch Adjustment Knobs or Button-head Pitch Adjustment Screws to secure the lens in place. For a Shasta anamorphic lens, also tighten the Set Screws on either side of the lens to lock the angle.

There may be some pincushion distortion even after the lens is

Note properly adjusted, especially at shorter throw distances. If this is the case, Runco recommends that you slightly over-scan the image into the screen frame area to mask the distortion.

D-73d Series Installation/Operation Manual 59