Panasonic PT-DZ12000U Operating Instructions - Page 42

How to adjust the lens (continued) Lens adjustment to compensate for uneven screen focus „ About the focus balance z Relationship between lens orientation and screen focus If the projection lens is tilted with respect to the plane of the screen, uneven focus will result. Figure 1: Illustration of influence of lens orientation Projection lens Image formation surface (DMD image plane) Screen surface versus focal point „ Procedure for adjusting the focus balance (tilt compensation in the lens mount) z Three focus adjustment screws on the lens mount may be used to compensate for uneven screen focus. Structure of lens mount (Figure 2, Figure 3) The three adjustment screws allow the lens to be tilted up and down, and three more screws lock down the adjustment. Figure 2 : Front view of lens mount (when viewed from screen side) Lens bracket a Locking screw c b (Adjust the focus adjustment screws a, b and c after installing the lens.) Figure 3 : Cross section view of the lens mount Lens tilt direction (when adjustment screws turned counterclockwise) Screen direction Lens bracket Adjustment Locking screw Lens flange screw Hole for Allen hex socket driver Spring 42 - ENGLISH