MODEL 2100 OVERHEAD PROJECTOR
FOCUS MECHANISM
If the projection head does not hold its focus position, you must adjust focus knob tension or add focus kit
To adjust:
Turn the Tension Screw counterclockwise to tighten focus assembly. Turn clockwise if binding occurs.
NOTE
Refocus the projector each time an adjustment is made.
ALIGNING THE FRESNEL LENS
When replacing the Fresnel Lens, use the following procedure:
A.Remove the Top Cover Assembly. (See Section 2 - Cleaning Stage Glass and Fresnel Lens, page
B.Place the Top Cover Assembly upside down on a flat, clean surface.
C.With the four (4) corner screws loosened, stretch two rubber bands between diagonally opposite screws, forming an "X" pattern. (See Figure)
D.Center circle of Fresnel Lens should exactly coincide with center of "X".
E.After centering, remove rubber bands one at a time and retighten corner screws.
Aligning the Fresnel Lens
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