3M 2100 manual Disassembly/Re-Assembly

Page 28

MODEL 2100 OVERHEAD PROJECTOR

SECTION 6 DISASSEMBLY/RE-ASSEMBLY

PROJECTION HEAD ASSEMBLY (DOUBLET)

TOP COVER ASSEMBLY

1.To disassemble Head Assembly from Head Support Bracket:

A.Remove Screw Cap from Top Shroud.

B.Remove the three screws (“A”).

C.Slide the Head Assembly off Support Bracket.

1.Raise the Top Cover Assembly by pulling the Release Lever and lifting up.

2.Using both hands, pull either one of the two hinges outward until the hinge pin is out of the hole. Slide the complete TOP COVER ASSEMBLY in the opposite direction to release the second hinge and lift up and out.

2.To disassemble Head Assembly from Head Support Bracket:

A.Remove the two screws (“A”).

B.Lift the Top Shroud off assembly.

C.Remove the three screws (“B”).

D.Slide the Head Assembly off Support Bracket.

FRESNEL LENS

1.Remove Top Cover Assembly. (See Figure above)

2.Loosen the four (4) screws holding the four

(4) corner clips and lens. DO NOT REMOVE SCREWS. Turn clips to side and remove lens.

NOTE

When replacing the Fresnel Lens, make certain the bow in the lens is in the convex (upward) position when projector is upright.

See Section 4, page 4-4, for proper alignment of Fresnel Lens.

9/92

6-1

Image 28
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