3M 2100 Service Manual

Also see for 2100: Illustrated parts breakdown

Contents

3M 2100 Service Manual Manual pdf 17 page image

9/92MODEL 2100 OVERHEAD PROJECTOR4-4FOCUS MECHANISMIf the projection head does not hold its focusposition, you must adjust focus knob tension oradd focus kit (78-8054-1613-4 (gray), 78-8054-1614-2 (charcoal).To adjust:Turn the Tension Screw counterclockwise totighten focus assembly. Turn clockwise ifbinding occurs.NOTERefocus the projector each time anadjustment is made.ALIGNING THE FRESNEL LENSWhen replacing the Fresnel Lens, use thefollowing procedure:A. Remove the Top Cover Assembly. (SeeSection 2 - Cleaning Stage Glass andFresnel Lens, page 2-3)B. Place the Top Cover Assembly upsidedown on a flat, clean surface.C. With the four (4) corner screws loosened,stretch two rubber bands betweendiagonally opposite screws, forming an"X" pattern. (See Figure)D. Center circle of Fresnel Lens shouldexactly coincide with center of "X".E. After centering, remove rubber bands oneat a time and retighten corner screws.Aligning the Fresnel Lens