Panasonic PT-DZ16KD, PT-DZ16KE, PT-DZ16KU Adjusting the lens mounter when the focus is unbalanced, Focus balance, rrFront view diagram of the lens mounter (viewed from the screen side)

Chapter 3 Basic Operations — Projecting

Adjusting the lens mounter when the focus is unbalanced

Focus balance

Relationship between the tilt of the lens and the screen focus surface

When the projection lens is tilted in contrast with the image forming surface, tilting the front side (screen side) of the projection lens downwards (in the direction of the dotted arrow line), the upper side of the screen focus surface will tilt inwards and the lower side will tilt outwards as shown in the example.

Projection lens

Image forming surface

Screen focus surface

How to adjust the focus balance (adjustment by tilting the lens mounter)

When the entire screen surface is not uniform even if the focus has been adjusted, the lens mounter has focus adjustment screws in three locations.

ff Tool used: Hex driver or Allen wrench (diagonal 2.5 mm (3/32"))

ff The Allen wrench is included with the projection lens ET‑D75LE6, ET‑D75LE8.

Lens mounter structure

Focus adjustment screws (a), (b), and (c) can be turned to move the lens mount bracket back and forth.

Also, tightening the fixed screws locks the lens mount bracket in place so it does not move.

When a projection lens with a large weight is installed, or when the projector is installed on an inclination, the lens may tilt and the focus may become unbalanced. In these cases, perform adjustment by referring to the relationship between the adjustment location and adjustment screws.

rrFront view diagram of the lens mounter (viewed from the screen side)

Lens mount bracket (a) Fixing screws

(b)(c)

Note

ff Focus adjustment screws (a), (b), and (c) are adjusted with the lens attached.

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