Zenith D52WLCD Series Service Manual page 36

CORRECTION OF SCREEN TILT & KEYSTONE
2. New Mechanism for Adjustment
The axis of rotation of engine sets back and the whole engine enable left and right rotation, up and down, left and right angle
movement.
When turning adjustment Knob of left/right in front, engine will move.
When moving the engine base with left and right direction in front, engine will rotate.
Rota
-tion
Left/Right
angle
Adjustment Knob
<Keyston Left & Right>
Adjustment Knob
<TILT Up & Down>
The axis of rotation
engine
Locking Knob
pole
- 36 -
engine base For calculation : When
projection lens 0.2c leans, Keystone
occurs 5mm.
engine base
engine
supporter
Side angle
The axis of rotation
engine base