R5906150 /02 XDL785. Repeat from step 1 until the projected focus pattern is as sharp as possible in the center, left, right, top andbottom of the screen.6. Proceed with the procedure “Fixation of the Lens Holder front plate”, page 78.7.3 Fixation of the Lens Holder front plateWhen fixing the Lens Holder front plateAfter performing the procedure for Scheimpflug adjustment or Back Focal Length adjustment the Lens Holderfront plate must be secured in such a way that it doesn't disturb the result of the adjustment.Required tools• Allen wrench 3 mm• Nut driver 10 mm• Nut driver 13 mmHow to fix the Lens Holder front plate?Start the fixation as follows (steps must be followed strictly) :1. Project the Outline / Aspect test pattern (depending on projector type).2. Zoom the projected image until the edges of the projected test pattern matches with the edges of theprojection screen.3. Turn in the three set screws indicated with reference 11 Image 7-10 without disturbing the projected image.Tighten lightly . Do not turn in the set screw at the lower left of the Lens Holder!Note: Ensure that the edges of the projected test pattern remain in place on the screen. Anymovement of the image will affect the Scheimpflug adjustment.4. Fasten the lock nut (reference 21 Image 7-10) of the three set screws. Use a 10 mm nut driver. Ensure theimage doesn't move.112111Image 7-105. Gently turn (by hand) the Scheimpflug adjustment nut at the lower left of the Lens Holder (reference 4Image 7-11) against the Lens Holder front plate without disturbing the projected image.6. Turn in the set screw at the lower left of the Lens Holder (reference 14 Image 7-11) without disturbing theprojected image. Use a 3 mm Allen wrench.Note: Ensure that the edges of the projected test pattern remain in place on the screen. Anymovement of the image will affect the Scheimpflug adjustment.Scheimpflug
