3M 2100 Service Manual
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3M 2100 Service Manual

3M 2100 Service Manual

Overhead projector
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Model 2100 (4100)
Overhead Projector
Service Manual
(Order the M2100 Illustrated Parts Breakdown separately - Stock # 78-6970-4936-5)
78-6970-1335-3
Visual Systems Division
3M Austin CenterBuilding
A145-5N-01
Austin, TX 78726-9000
9/92

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  • Page 1 Model 2100 (4100) Overhead Projector Service Manual (Order the M2100 Illustrated Parts Breakdown separately - Stock # 78-6970-4936-5) 78-6970-1335-3 9/92 Visual Systems Division 3M Austin CenterBuilding A145-5N-01 Austin, TX 78726-9000...

  • Page 2: Table Of Contents

    MODEL 2100 OVERHEAD PROJECTOR TABLE OF CONTENTS Technical Support Hotline - 1-800-328-1371 (U.S. & Canada) TITLE PAGE NUMBER Section 1 - Introduction ................. 1-1 Specifications ................1-1 Principles of Operation..............1-3 - Optics ..................1-3 - Cooling ..................1-3 Section 2 - Operation and Maintenance ............

  • Page 3: Section 1 Introduction

    MODEL 2100 OVERHEAD PROJECTOR SECTION 1 INTRODUCTION This service manual contains servicing instruction, troubleshooting guide, adjustments, electrical diagrams, assembly/dis-assembly of parts and the illustrated parts list. ANGULAR BODY (2130/4130, 2140/4140, 2160, 2170) ROUND BODY (2150/4150, 2180) SPECIFICATIONS Physical Width - 15.25"...
  • Page 4 MODEL 2100 OVERHEAD PROJECTOR 9/92...
  • Page 5 MODEL 2100 OVERHEAD PROJECTOR Electrical 2160/2170/2180 2160/2170/2180 2130/2140/2150 4130/4140/41 50 Voltage 120/127/VAC 100VAC 220/230/240VAC Frequency 60HZ 50/60HZ 50HZ Current Rating 3.0 Amps 3.6 Amps 1.7 Amps Power Cord 14-1/2' (4.4mm) 14-1/2' (4.4mm) 14-1 /2' (4.4mm) UL, CSA Agency Approval -------...

  • Page 6: Principles Of Operation

    MODEL 2100 OVERHEAD PROJECTOR PRINCIPLES OF OPERATION Optics (See Figure 1-2) The stage glass provides a convenient flat surface for placing transparencies and other The light source for the Overhead Projector materials to be projected. Because the light is 275 watt, 24 volt, Tungsten Lamp listed passes through the stage, these projection as ANSI Code FNT and rated at 75 hours.

  • Page 7: Section 2 - Operation And Maintenance

    MODEL 2100 OVERHEAD PROJECTOR SECTION 2 - OPERATION AND MAINTENANCE SET UP PROCEDURE 1 . Connect the power cord to a properly grounded electrical outlet. (Electrical requirements are listed on the serial plate located under the base of the projector.) 2.
  • Page 8 MODEL 2100 OVERHEAD PROJECTOR Correct any horizontal keystoning by A. Pull the mirror down as the FOCUS moving the projector until it is perpen- CORRECTION LEVER is pushed to dicular with the screen. the rear of the head assembly. B. Raise the mirror back to the original position and refocus using the FO- CUS KNOB.

  • Page 9: Lamp Management System

    MODEL 2100 OVERHEAD PROJECTOR LAMP MANAGEMENT SYSTEM (Lamp Indicator) Pertains only to models equipped with lamp indicators. (2130/4130 - No holes, opaque) NOTE When the projector is turned on, the red X will momentarily light. This is a characteristic of the projector.

  • Page 10: Cleaning

    Mirrors The mirror in the Open Lens Projection Head of all Model 2100 (4100) projectors are front surface mirrors and must NOT be cleaned with a cloth and lens cleaner. Remove any surface dirt on this mirror with a Camel Hair Brush only.

  • Page 11: Lubrication

    MODEL 2100 OVERHEAD PROJECTOR LUBRICATION As needed and upon new parts installation, lubricate lightly the following area with Anderol No. 757 Grease (3M Part No. 78- 8000-8079-4). For reference on the lubricating points, see the three blow-up parts lists. Lamp Changer Assembly...

  • Page 12: Section 3 - Troubleshooting

    MODEL 2100 OVERHEAD PROJECTOR SECTION 3 - TROUBLESHOOTING SYMPTOM CHECK CAUSE/SOLUTIONS Projected image is: - Is lamp of proper type? (See - Damaged or misadjusted optics a. Corners of projected image label on underside of top cover) components (requires appear red (brown) or blue.
  • Page 13 MODEL 2100 OVERHEAD PROJECTOR TROUBLESHOOTING (continued) SYMPTOM CHECK CAUSE/SOLUTIONS Fan motor does not rotate, but - Is anything blocking rotation of - Loose or broken wire lamp does energize. fan motor? connection to motor. - Defective fan motor. Both lamps of units with lamp - Wires crossed and touching? - Defective lamp sensing switch.

  • Page 14: Section 4 Adjustments

    MODEL 2100 OVERHEAD PROJECTOR SECTION 4 ADJUSTMENTS GENERAL The following section describes the adjustments that will be necessary to service the Model 2100 (4100) Overhead Projectors. TOOLS REQUIRED Screwdriver (standard & phillips) Wrench, open end Pliers, standard Pliers, grip ring...
  • Page 15 MODEL 2100 OVERHEAD PROJECTOR 1. Select a 60 by 60 inch, smooth area on one wall. Place a sturdy bench or test 4. Using the mark on the wall as a base stand about 8 feet from this wall area.

  • Page 16: Optical Alignment

    MODEL 2100 OVERHEAD PROJECTOR OPTICAL ALIGNMENT To square the image on the Triplet Head, Proper alignment of the optical system is remove the two Top Shroud screws and lift essential for good resolution and uniform off the Top Shroud. Follow the same illumination.

  • Page 17: Focus Mechanism

    MODEL 2100 OVERHEAD PROJECTOR FOCUS MECHANISM ALIGNING THE FRESNEL LENS When replacing the Fresnel Lens, use the following procedure: If the projection head does not hold its focus position, you must adjust focus knob tension or Remove the Top Cover Assembly. (See...

  • Page 18: Color Tuning Cable

    MODEL 2100 OVERHEAD PROJECTOR COLOR TUNING CABLE COLOR TUNING CABLE (Before Serial Number 422868) (After Serial Number 422868) No adjustment. NOTE Tension in cable should be 3/16" maximum. Raise the Top Cover Assembly by pulling the Release Latch and lift up. (See...

  • Page 19: Post (Folding)

    MODEL 2100 OVERHEAD PROJECTOR POST (FOLDING) LAMPCHANGER CABLE If POST is not perpendicular to the body of the NOTE projector, proceed with the following steps Tension on cable should be a maximum using Figures below as reference: of 3/16". 1. Loosen SET SCREW.
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  • Page 28: Section 6 Disassembly/Re-Assembly

    MODEL 2100 OVERHEAD PROJECTOR SECTION 6 DISASSEMBLY/RE-ASSEMBLY PROJECTION HEAD ASSEMBLY (DOUBLET) TOP COVER ASSEMBLY 1. To disassemble Head Assembly from Head 1. Raise the Top Cover Assembly by pulling the Support Bracket: Release Lever and lifting up. A. Remove Screw Cap from Top Shroud.

  • Page 29: Stage Glass

    5. To reassemble, make certain the beveled 5. After re-assembly is completed, readjust the edges on the Stage Glass are facing down focus tension. and the 3M logo is in the lower left front corner. (2140/2150 only, 2130 does not have logo) NOTE This drawing of Stage is up side down.

  • Page 30: Condenser Lens

    MODEL 2100 OVERHEAD PROJECTOR How to remove and install the condenser lens (when equipped) Caution! Wear safety glasses when removing lens. .020 Feeler Gage .020 to .030 Gap after installation Illustration A Illustration B 1. Insert a Pin Punch or Drill Rod into the hole in the Tab (see illustration A) 2.

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