3M 9800 Service Manual

3M 9800 Manual

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  • 3M 9800 | Service Manual - Page 1
    9800 Overhead Projector Service Manual 3M Visual Systems Division 6801 River Place Boulevard Austin, Texas 78726-9000 Printed in U.S.A. E3M 7/96 78-6970-5568-5 Rev. C
  • 3M 9800 | Service Manual - Page 2
    3Mt Overhead Projector 9800 Series Table of Conents 1-1. Overview 1-1 1-1-1. Parts Identification 1-1 1-1-2. Physical Dimensions 1-2 1-1-3. Safety Features 1-2 1-2. Principles of Operation 1-3 1-2-1. Optical Components 1-3 1-2-2. Cooling 1-4 1-2-3. Lamp Changer and High/Low Controls 1-5
  • 3M 9800 | Service Manual - Page 3
    3Mt Overhead Projector 9800 Series Table of Conents 5-3-5. How to Replace the Reflector 5-10 5-4. Electrical Components 5-11 5-4-1. How to Replace the Overvoltage Protector Circuit Board (OPC 5-11 5-4-2. How to Replace the Transformer 5-11 5-4-3. How to Replace the Internal Voltage Switch 5-
  • 3M 9800 | Service Manual - Page 4
    3Mt Overhead Projector 9800 Series Section 1 - Introduction 1-1. Overview This service manual contains projector specifications, servicing instructions, operating instructions, assembly and disassembly of parts instructions, a troubleshooting guide and electrical and wiring diagrams. It is
  • 3M 9800 | Service Manual - Page 5
    power to the lamp if unsafe operating temperature should occur. 422mm (16.6 in.) 353mm (13.9 in.) 429mm (16.9 in.) 589mm (23.2 in.) 432mm (17.0 in.) 287mm (11.3 in.) 9800-77I 744mm (29.3 in.) Maximum 251mm (9.9 in.) Figure 1-2. Physical Dimensions 9800 Service Manual E 3M 1996 9800-78I 1-2
  • 3M 9800 | Service Manual - Page 6
    3Mt Overhead Projector 9800 Series Section 1 - Introduction 1-2. Principles of Operation The 9800 projector is a transmissive projector. The light source (lamp) is located in the base of the projector where and project the images placed on the glass surface. 9800 Service Manual E 3M 1996 1-3
  • 3M 9800 | Service Manual - Page 7
    3Mt Overhead Projector 9800 Series Section 1 - Introduction 1.3X Magnifier Lens The 1.3X magnifier lens is used . Using the magnifier lens and/or LCD panels will alter the projector to screen distances. Refer to Section 1-2-5. B Figure 1-5. Cooling A 9800-52I 9800 Service Manual E 3M 1996 1-4
  • 3M 9800 | Service Manual - Page 8
    . Note Use the "Low" setting to extend lamp life. 1-2-4. Color Tuning Color tuning adjusts the distance between the lamp and the Fresnel lens to remove yellow/orange to brown or blue colors from the corners of projected images. See Section 4-2-5 for instructions. 9800 Service Manual E 3M 1996 1-5
  • 3M 9800 | Service Manual - Page 9
    panel size in the chart and read the corresponding projector to screen throw distance to the right. Note Focusing an overhead projector at extreme distances (near or far) may result in poor overall image quality and require a Color Tuning adjustment. See 1-2-4. 9800 Service Manual E 3M 1996 1-6
  • 3M 9800 | Service Manual - Page 10
    3Mt Overhead Projector 9800 Series Section 1 - Introduction 9800 EVD FL = 342 mm (13.5 in.) 127 cm x 127 cm 152 cm x 152 cm 177 cm x 177 (67 in.) 198 cm (78 in.) 226 cm (89 in.) 266 cm (104 in.) 299 cm (118 in.) Figure 1-6. Projector-To-Screen Distances 9800 Service Manual E 3M 1996 1-7
  • 3M 9800 | Service Manual - Page 11
    3Mt Overhead Projector 9800 Series Section 1 - Introduction This page intentionally left blank 9800 Service Manual E 3M 1996 1-8
  • 3M 9800 | Service Manual - Page 12
    3MtOverhead Projector 9800 Series Section 2 - Operating The 9800 Projector 2-1. Set-Up Procedure 1. Release post cradle latch and lift (3) to position image on screen and rotate focus knob (4) for clearest image. 3 4 9800-81I Figure 2-2. Adjust Mirror and Focus 9800 Service Manual E 3M 1996 2-1
  • 3M 9800 | Service Manual - Page 13
    and lower post until it rests and locks in the post cradle. Figure 2-5. Lower Head To Projector Body 6. To move projector, lift from bottom or use the carrying handle. Figure 2-6. Lift Projector From Bottom Figure 2-4. Raise Head, Lift Post Latch and Fold Post 9800 Service Manual E 3M 1996 2-2
  • 3M 9800 | Service Manual - Page 14
    9800 Series Section 2 - Operating The 9800 Projector 2-3. Operating Instructions 1. Position projector in front of projection screen. The distance from the screen controls the size of the projected image. 2. Plug power cord into an electric outlet. 3. Push power switch to "On" to illuminate lamp
  • 3M 9800 | Service Manual - Page 15
    2. Rotate the Lamp Changer Dial (3) to position 1 or 2. 3. Close control panel door to restore power and illuminate lamp. Note The red X will light when a lamp is either defective or missing. Important Lamp will not illuminate unless control panel door is closed. 9800 Service Manual E 3M 1996 2-4
  • 3M 9800 | Service Manual - Page 16
    cover and plug power cord into outlet. Important Lamp will not illuminate unless Top Cover is closed and latched. Figure 2-12. Top Cover Latch 3. Allow lamp to cool before replacing. ! Lamp and adjacent metal parts are hot. Allow lamp to cool before replacing. 9800 Service Manual E 3M 1996 2-5
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    3MtOverhead Projector 9800 Series Section 2 - Operating The 9800 Projector This page intentionally left blank 9800 Service Manual E 3M 1996 2-6
  • 3M 9800 | Service Manual - Page 18
    3Mt Overhead Projector 9800 Series Section 3 - Maintenance 3-1. Cleaning For best performance, the optical surfaces of a projector must be free 3Mt Overhead Cleaner 676 Figure 3-2. Removing Surface Dirt 9800-54I 9800-55I Figure 3-3. Removing Smudges or Fingerprints 9800 Service Manual E 3M 1996
  • 3M 9800 | Service Manual - Page 19
    In the 9800 projector, the Fresnel Lens is a doublet lens with a smooth surface on both sides. ! Caution Do not clean the Fresnel Lens by immersing or flushing in water. 1. Remove the Fresnel Lens (see Section 5-2-2 for instructions). 2. Dampen a lint-free cloth with a liberal amount of 3M overhead
  • 3M 9800 | Service Manual - Page 20
    be high enough to provide easy access to all parts of the overhead projector when it is placed on the stand for testing 9800-85I Figure 4-2. Projector to Screen Alignment 4. Mark the position of the stand legs on the floor and the position of the projector base on the stand. 9800 Service Manual E 3M
  • 3M 9800 | Service Manual - Page 21
    Projector 9800 Series 4-3. Required Tools The following tools are required to service 9800 Overhead Projectors: 1. Screwdriver (standard and #2 Phillips) 2. Box projector base on the test stand. Use this mark to properly position the projector each time it is checked. 9800 Service Manual E 3M
  • 3M 9800 | Service Manual - Page 22
    3MtOverhead Projector 9800 Series Section 4 - Adjustments 4-2. Optical Alignment Proper alignment the lamp is fully illuminated. Wait until the lamp image has faded. Sight Through Mirror Not Aligned Not Centered 9800 Service Manual E 3M 1996 Aligned and Centered 9800-58I Figure 4-4. Lamp
  • 3M 9800 | Service Manual - Page 23
    3MtOverhead Projector 9800 Series Section 4 - Adjustments 4-2-2. Post Alignment If the post is loose, it may not be perpendicular to the body of the projector which may cause the lift entire cover (5) upward over mirror . 9800 Service Manual E 3M 1996 5 14 Figure 4-7. Adjusting the Head 5 2 43
  • 3M 9800 | Service Manual - Page 24
    the lamp filament is not centered in the lens, loosen the head fastening screws and rotate the projection head as needed to center the lamp. Figure 4-4. 5. After the projection head is aligned, check for a square image that is focused in all corners. Figure 4-6. 9800 Service Manual E 3M 1996 4-5
  • 3M 9800 | Service Manual - Page 25
    3MtOverhead Projector 9800 Series Section 4 - Adjustments 4-2-5. Color Tuning Adjustment A color tuning adjustment is needed if there are yellow/orange to the right (clockwise). remove blue Figure 4-11. Color Tuning Dial remove yellow/ orange to brown 9800-86I 9800 Service Manual E 3M 1996 4-6
  • 3M 9800 | Service Manual - Page 26
    3Mt Overhead Projector 9800 Series 5-1. Open Projection Head Assembly Retaining Screw Section 5 - Disassembly/Reassembly Triplet Lens Screw Plastic Washer Clip Head Cover Cover Retaining Screw Projection Mirror Upper Lens Bracket Lower Lens Bracket 9800-63I Damping Screw Pad Washer Upper
  • 3M 9800 | Service Manual - Page 27
    3Mt Overhead Projector 9800 Series Section 5 - Disassembly/Reassembly 5-1-1. How to Replace the Mirror Assembly ! Caution Do not remove the protective film until the Mirror is lbs. of torque to mirror retaining screws. 7. Remove protective film from the Mirror. 9800 Service Manual E 3M 1996 5-2
  • 3M 9800 | Service Manual - Page 28
    3Mt Overhead Projector 9800 Series 5-2. Stage Assembly 5-2-1. How to Remove the Top Cover 1. Open top cover. 2. Remove the front hinge screw. See Figure 5-3. Section 5 - Disassembly/Reassembly 5-2-2. How to Replace the Fresnel Lens 1. Remove the top cover. Figure 5-3. ! Caution Both sides of the
  • 3M 9800 | Service Manual - Page 29
    3Mt Overhead Projector 9800 Series Section 5 - Disassembly/Reassembly 5-2-3. How to Replace the Top Cover Latch 1. Replacing Stage Glass 5. Stand the top cover on edge and attach the metal retainer. 6. Clean the underside glass surface before reinstalling the Fresnel Lens. 9800 Service Manual E 3M
  • 3M 9800 | Service Manual - Page 30
    3Mt Overhead Projector 9800 Series 5-2-5. How to Replace the Power Switch Button 1. Open the top cover. 2. Remove the power switch button by spreading apart the hinge holders. See Figure 5-8. Hinge Holders Section 5 - Disassembly/Reassembly 5-2-6. How to Replace the On/Off Switch Actuator 1. Open
  • 3M 9800 | Service Manual - Page 31
    3Mt Overhead Projector 9800 Series Section 5 - Disassembly/Reassembly 5-2-7. How to Replace the Power Switch Interlock ! Unplug projector power cord before performing any . Interlock Wire Connectors Screws Figure 5-11. Power Switch Interlock 9800-92I 9800 Service Manual E 3M 1996 5-6
  • 3M 9800 | Service Manual - Page 32
    the lamp/optical assembly straight up to remove it from the projector body. 9. Reassemble in reverse order. Note When reassembling, remember to insert the thermal insulator then the heat shield. Mounting Bracket Retaining Screw Figure 5-13. Lamp Control Module 9800-93 9800 Service Manual E 3M
  • 3M 9800 | Service Manual - Page 33
    3Mt Overhead Projector 9800 Series 5-3-2. How to Replace the Hot Mirror ! Unplug projector power cord before performing any maintenance to electrical components. Section 5 - Disassembly/ from the condenser lens bracket. This will free the hot mirror. Figure 5-16. 9800 Service Manual E 3M 1996 5-8
  • 3M 9800 | Service Manual - Page 34
    3Mt Overhead Projector 9800 Series Section 5 - Disassembly/Reassembly 5-3-3. How to Replace the Condenser Lens 5-3-4. How to Replace the Lamp Socket Caution Handle the lens carefully to prevent chipping or scratching the surface during installation. ! Unplug projector power cord before
  • 3M 9800 | Service Manual - Page 35
    Overhead Projector 9800 Series 5-3-5. How to Replace the Reflector ! Unplug projector power cord before performing any maintenance to electrical components. 1. Unplug power cord from electrical outlet. 2. Remove optical/lamp assembly from projector 9800-91I 9800 Service Manual E 3M 1996 5-10
  • 3M 9800 | Service Manual - Page 36
    3Mt Overhead Projector 9800 Series Section 5 - Disassembly/Reassembly 5-4. Electrical Components 5-4-1. How to Replace the Overvoltage Protector Circuit Board (OPC) ! Unplug projector power cord 120v 124v -4 220v 227.3v -7.3 230v 237.7v -7.7 240v 248v -8 9800 Service Manual E 3M 1996 5-11
  • 3M 9800 | Service Manual - Page 37
    3Mt Overhead Projector 9800 Series Section 5 - Disassembly/Reassembly 5-4-3. How to Replace the Internal Voltage Switch ! Unplug projector power cord before performing any maintenance to electrical components. Set the switch to high for areas with normal input voltage or low for areas with
  • 3M 9800 | Service Manual - Page 38
    3Mt Overhead Projector 9800 Series Section 5 - Disassembly/Reassembly 5-4-5. How to Replace the Thermostat 5-4-6. How to Replace the Circuit Breaker ! Unplug projector power cord before performing any maintenance to electrical components. ! Unplug projector power cord before performing any
  • 3M 9800 | Service Manual - Page 39
    3Mt Overhead Projector 9800 Series 5-4-7. How to Replace the Accessory Outlets ! Unplug projector power cord before performing any maintenance to electrical components. 1. Unplug power cord from outlet. 2. From the outside of the projector, use a torx screwdriver to unscrew two retaining screws
  • 3M 9800 | Service Manual - Page 40
    plastic strain relief. 4. Open top cover. 5. Remove three wire connectors, slide strain relief off end of power cord and remove cord from projector body. Outlet Shield Strain Relief Power Cord Figure 5-31. Replacing Power Cord Strain Relief Screw 9800-96I 9800 Service Manual E 3M 1996 5-15
  • 3M 9800 | Service Manual - Page 41
    3Mt Overhead Projector 9800 Series Section 5 - Disassembly/Reassembly 5-5. Fan Blade/Fan Motor 5-5-1. How to Replace Fan Blade and Motor ! Unplug projector power cord before performing any maintenance to electrical components. Heat Tape Fan Blade Motor Ground Wire 1. Unplug power cord from
  • 3M 9800 | Service Manual - Page 42
    3Mt Overhead Projector 9800 Series Section 5 - Disassembly/Reassembly 5-6. Post/Lock Assembly 5-6-1. How to Disassemble the . Post Lock Assembly Post Nut 9800-62I Post-Mount Pivot Washers Stop Screw 9800-72I Figure 5-35. Exploded View of Post Lock Assembly 9800 Service Manual E 3M 1996 5-17
  • 3M 9800 | Service Manual - Page 43
    3Mt Overhead Projector 9800 Series 5-7. Focus Assembly 5-7-1. How to Disassemble the Focus Assembly 1. Pull focus knob straight off to remove. Figure 5-36. 2. To replace focus assembly parts, unscrew retaining screws and remove cover. 3. See the Illustrated Parts Breakdown manual for parts detail.
  • 3M 9800 | Service Manual - Page 44
    9800 Overhead Projector Section 6 - Troubleshooting 6-1. Troubleshooting Matrix The Troubleshooting Matrix below is organized in the manner: • Symptom: Describes typical projector malfunctions. • Things To Check: Describes things to check to isolate the cause of the problem. • Solution:
  • 3M 9800 | Service Manual - Page 45
    9800 Overhead Projector Section 6 - Troubleshooting Symptom Lamp does not illuminate but fan motor runs. Lamp does not come on when lamp changer dial is rotated from burned out lamp to good lamp. Both lamps illuminate at the same time. Corners of projected image appear yellow/orange to brown or
  • 3M 9800 | Service Manual - Page 46
    ? side toward the hot mirror. a. Is fan blade or motor hit- a. Remove foreign objects ting obstruction? from inside projector. b. Is fan motor burned out? b. Replace defective motor. Section 2-3 4-2 3-1 2-6 5-4-3 5-2-2 5-5 5-5 1-2-2 4-2-1 2-4 5-2-2 5-3-3 5-5 5-5 3M 9800 Service Manual 6-3
  • 3M 9800 | Service Manual - Page 47
    9800 Overhead Projector Section 6 - Troubleshooting 6-2. How To Check the Overvoltage Protector Circuit Board (OPC) The OPC is a voltage sensing circuit that monitors line voltage and automatically switches transformer taps to prevent damaging voltage to the lamp. The OPC is working properly if at
  • 3M 9800 | Service Manual - Page 48
    9800 Overhead Projector 6-3. Technical Assistance For technical assistance call: U.S. and Canada: (7:30 am to 5:30 pm central time) 800-328-1371 In other locations: Contact your local 3M Sales Office. Technical Assistance Center: For information or technical support on any 3M Visual Systems Division
  • 3M 9800 | Service Manual - Page 49
    9800 Overhead Projector Section 6 - Troubleshooting This page intentionally left blank 3M 9800 Service Manual 6-6
  • 3M 9800 | Service Manual - Page 50
    9800 Overhead Projector 7-1. Electrical Section 7 - Electrical Diagrams 9800 - Electrical LEGEND 7-2. Wiring Wire jumpers are identified by numbered callouts. Refer to the 9800 Illustrated Parts Breakdown manual for the corresponding part number. 27 28 1 2 3 4 29 6 7 8 5 15 31 30 23 22
  • 3M 9800 | Service Manual - Page 51
    9800 Overhead Projector Section 7 - Electrical Diagrams This page intentionally left blank 3M 9800 Service Manual 7-2
  • 3M 9800 | Service Manual - Page 52
    3M Visual Systems Division 6801 River Place Boulevard Austin, Texas 78726-9000 Printed on recycled paper. Printed in U.S.A. E 3M 7/96 78-6970-5568-5 Rev. C
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3M Visual Systems Division
6801 River Place Boulevard
Austin, Texas 78726-9000
Printed in U.S.A.
E
3M 7/96
78-6970-5568-5 Rev. C
9800
Overhead Projector
Service Manual