3M 2100 manual Optical Alignment

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OPTICAL ALIGNMENT

Proper alignment of the optical system is essential for good resolution and uniform illumination. Poor resolution in one corner and either red or blue in the corners of the projected image are indications of poor alignment. The following components should be checked and adjusted if necessary before aligning the overhead projector.

SQUARE IMAGE

A.Set projector on a level table. Project an image onto a screen or wall. Axis of beam must be perpendicular to projection surface.

B.Check to see that side of projected image are vertical.

C.If the image is not square, remove CAP and loosen the three (3) Head Fastening Screws (Doublet Head), and move the projection head either to the left or right, forward or backward. When image is square, tighten the center top screw first, then the two bottom screws. (See Figure)

MODEL 2100 OVERHEAD PROJECTOR

D.To square the image on the Triplet Head,

remove the two Top Shroud screws and lift off the Top Shroud. Follow the same procedure as used on the Doublet Head to complete adjustment. Replace the Top Shroud.

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Contents Model 2100 Overhead Projector Table of Contents Technical Support Hotline 1-800-328-1371 U.S. & CanadaIntroduction PhysicalModel 2100 Overhead Projector Electrical 2130/2140/2150 2160/2170/2180 4130/4140/41 MechanicalOptical 2130/2140/2150 2160/2170/2180 4130/41 40/4150Principles of Operation Operation and Maintenance Do not look in the front projection lens when lamp is onCUS Knob Method Cleaning Stage Glass and Fresnel Lens MirrorsLamp Changer Assembly Before S/N After S/N Troubleshooting Symptom Check CAUSE/SOLUTIONSTroubleshooting Field Kits AvailableAdjustments If floor or ceiling lines are not Optical Alignment Focus Mechanism 924-5 Tension in cable should be 3/16 MaximumPost should Fold Down Without TOO Much Force Page Page Page Page Page Page Page Page DISASSEMBLY/RE-ASSEMBLY Stage Glass Focusing Assembly How to remove and install the condenser lens when equipped