3M MP8610 Service Manual
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3M MP8610 Service Manual

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MP8610 Multimedia Projector

Service Manual

3M Visual Systems Division
6801 River Place Boulevard
Austin, Texas 78726-9000
Printed in U.S.A.
©3M 5/99 78-6970-8987-4 Rev. A

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Summary of Contents for 3M MP8610

  • Page 1: Service Manual

    MP8610 Multimedia Projector Service Manual 3M Visual Systems Division Printed in U.S.A. 6801 River Place Boulevard ©3M 5/99 78-6970-8987-4 Rev. A Austin, Texas 78726-9000...

  • Page 2: Table Of Contents

    Multimedia Projector MP8610 MP8610 Table of Contents 8610 Table of Contents SECTION 1. ADJUSTMENTS Overview............................... 1-1 Static Control ............................1-1 Machine Identification ........................... 1-1 Technician Tools ........................... 1-2 Return to Default Settings........................1-3 Keep the LCD Panel Clean ........................1-4 Interface/Audio Board Synchronization ....................
  • Page 3 Multimedia Projector MP8610 MP8610 Table of Contents SECTION 3. TROUBLESHOOTING Overview............................... 3-1 Direct Failure Troubleshooting Flow Charts ..................3-1 3.2.1 Projector Does Not Power Up ....................... 3-2 3.2.2 Lamp Does Not Light ........................3-3 3.2.3 Projector Image Problem....................... 3-4 3-2.4 LCD Not Functioning........................

  • Page 4: Section 1. Adjustments

    Static Control The circuit boards in the MP8610 are very sensitive to static energy. A simple static charge can ruin a circuit board instantly. Because of this, it is essential that you complete all repairs in a static-safe work environment.

  • Page 5: Technician Tools

    Backlight Light Source: Used to check the disassembled LCD unit without the original machine lamp source. Voltmeter: Used to measure the voltage at particular test points. 3M recommends the Fluke™ model 87 Oscilloscope (100 MHz): Used to check the video signals horizontal and vertical synchronization and the video board clock.

  • Page 6: Return To Default Settings

    Multimedia Projector MP8610 Adjustments 1-5. Return to Default Settings 1. Power down the projector and turn the main power switch to off. Press and hold both the Enter button and the Down Arrow button on the control panel 2. Turn the main power switch to on. The default settings are restored and the following message appears: Parameter Factory Settings Restored.

  • Page 7: Keep The Lcd Panel Clean

    3. Use a dust blower or compressed air to blow air on the LCD panel. Do not exceed 40 PSI. 4. If dust is still visible wipe the LCD panel with a chamois swab or a lint-free cloth from the 3M LCD cleaning kit.
  • Page 8 Multimedia Projector MP8610 Adjustments 1-6-3. Install LCD Ribbon Cable Installing a new LCD ribbon cable is done using the following steps: 1. Gently pull out the white plastic clamp on the LCD and interface board connectors to release the LCD ribbon cable.

  • Page 9: Interface/Audio Board Synchronization

    Multimedia Projector MP8610 Adjustments 1-7. Interface/Audio Board Synchronization The interface board or the audio board must be in sync. If either one or both are changed, complete the synchronization procedure. 1. Remove the power supply board using the procedure listed in the Disassembly/Reassembly section.

  • Page 10: Lamp Alignment

    Multimedia Projector MP8610 Adjustments 1-8. Lamp Alignment A poorly aligned lamp can reduce the brightness or the uniformity of the projection image. To ensure that the projector is producing the best possible image lamp alignment should be checked regularly. 1-8-1. Check the Lamp Alignment 1.
  • Page 11 Multimedia Projector MP8610 Adjustments Align the Lamp 1-8-2. 1. With the projector off, adjust the lamp up or down by turning the two adjustment screws mounted on springs under the lamp socket. If the arcs are too close, the lumen output will be reduced. If the arcs are to far apart the image uniformity will be affected.

  • Page 12: Lamp Timer Information

    Multimedia Projector MP8610 Adjustments 1-9. Lamp Timer Information A lamp life indicator is located under the Option sub-menu. If the indicator bar for the sub-menu item Lamp is Green the lamp is good. When the bar turns red or the projection image appears dark, the lamp and air filter should be replaced.

  • Page 13: Image Adustments

    Multimedia Projector MP8610 Adjustments 1-10. Image Adjustments 1-10-1. Adjusting the display resolution and brightness and contrast. 1. Display the PC (RGB) input device projection image. 6. Boot up Microsoft Windows. Go to Control Panel and adjust the desktop background to an even black-and- white raster.
  • Page 14 Multimedia Projector MP8610 Adjustments 1-10-2. Adjusting the tracking to remove vertical bands in the projection image. 1. Test the tracking using a MS Excel spreadsheet projection image or equivalent. If vertical interference can be seen, then the tracking needs adjustment.
  • Page 15 Multimedia Projector MP8610 Adjustments 1-10-3. Adjusting the Sync pixel frequency and scanning frequency. This adjustment removes any “ fuzziness or flicker” in the projection image. 1. Press the Menu button on the projector to display the main menu. 2. Press the up/down Arrow buttons on the projector or move the Control Stick on the remote control up/down to highlight the Setup sub-menu.

  • Page 16: Section 2. Disassembly/Reassembly

    2. Disassembly/Reassembly 2-1. Overview Disassembly and reassembly of the MP8610 is done using the reference photographs and the step-by-step procedures that follow. Many component disassembly steps build upon previous disassembly steps. Refer to the previous disassembly steps as needed. For general machine operation instructions including air filter or lamp replacement, refer to the Operator’s Guide.

  • Page 17: Remove Lens Cover

    Multimedia Projector MP8610 Disassembly/Reassembly 2-3-1. Remove Lens Cover WARNING Caution To avoid electrical shocks, unplug projector To avoid burns to fingers, allow projector lamp power cord before performing any maintenance and internal projector components to cool off prior to electrical components.

  • Page 18: Remove Top Cover

    Multimedia Projector MP8610 Disassembly/Reassembly 2-3-2. Remove Top Cover WARNING Caution To avoid electrical shocks, unplug projector To avoid burns to fingers, allow projector lamp power cord before performing any maintenance and internal projector components to cool off prior to electrical components.

  • Page 19: Remove Fan & Plenum

    Multimedia Projector MP8610 Disassembly/Reassembly 2-3-3. Remove Fan and Plenum WARNING Caution To avoid electrical shocks, unplug projector To avoid burns to fingers, allow projector lamp power cord before performing any maintenance and internal projector components to cool off prior to electrical components.

  • Page 20: Remove Lamp Assembly

    Multimedia Projector MP8610 Disassembly/Reassembly 2-3-4. Remove Lamp Assembly WARNING Caution To avoid electrical shocks, unplug projector To avoid burns to fingers, allow projector lamp power cord before performing any maintenance and internal projector components to cool off prior to electrical components.

  • Page 21: Remove Power Supply

    Multimedia Projector MP8610 Disassembly/Reassembly 2-3-5. Remove Power Supply WARNING Caution To avoid electrical shocks, unplug projector To avoid burns to fingers, allow projector lamp power cord before performing any maintenance and internal projector components to cool off prior to electrical components.

  • Page 22: Remove Interface Housing Assembly

    Multimedia Projector MP8610 Disassembly/Reassembly 2-3-6. Remove Interface Housing Assembly WARNING Caution To avoid electrical shocks, unplug projector To avoid burns to fingers, allow projector lamp power cord before performing any maintenance and internal projector components to cool off prior to electrical components.
  • Page 23 Multimedia Projector MP8610 Disassembly/Reassembly 7. Disconnect the ribbon cable from the control panel. 8. Remove one (1) screw from the upper left corner of the interface housing assembly. 9. Remove the interface housing assembly. 10. Reassemble in reverse order. 3M 1999...

  • Page 24: Remove Lcd Assembly

    Multimedia Projector MP8610 Disassembly/Reassembly 2-3-7. Remove LCD Assembly WARNING Caution To avoid electrical shocks, unplug projector To avoid burns to fingers, allow projector lamp power cord before performing any maintenance and internal projector components to cool off prior to electrical components.
  • Page 25 Multimedia Projector MP8610 Disassembly/Reassembly 16. Remove two (2) screws from the LCD assembly on the fan assembly side. 17. Remove two (2) screws from the other end of the LCD assembly. 18. Lift up the LCD assembly and thread the ribbon cable through the ferrit.

  • Page 26: Remove Fresnel Lens & Polarization Filter

    Multimedia Projector MP8610 Disassembly/Reassembly 2-3-8. Remove Fresnel Lens and Polarization Filter WARNING Caution To avoid electrical shocks, unplug projector To avoid burns to fingers, allow projector lamp power cord before performing any maintenance and internal projector components to cool off prior to electrical components.

  • Page 27: Remove Ir Receiver Board

    Multimedia Projector MP8610 Disassembly/Reassembly 2-3-9. Remove IR Receiver Board WARNING Caution To avoid electrical shocks, unplug projector To avoid burns to fingers, allow projector lamp power cord before performing any maintenance and internal projector components to cool off prior to electrical components.

  • Page 28: Section 3. Troubleshooting

    Troubleshooting 3. Troubleshooting 3-1. Overview Troubleshooting is necessary to isolate problems with the MP8610. This section contains troubleshooting flow charts and a general problems section. 3-2. Direct Failure Troubleshooting Flow Charts The troubleshooting flow charts listed in this section start with the basics and move forward. They are designed to be used for solving direct failure problems.

  • Page 29: Projector Does Not Power Up

    Multimedia Projector MP8610 Troubleshooting 3-2-1. Projector Does Not Power Up Projector Does Not Power Up Is the lamp access door closed completely? Close the lamp access door. Is the LCD in the projection position? Close top cover, reopen completely. Is the LCD...

  • Page 30: Lamp Does Not Light

    Multimedia Projector MP8610 Troubleshooting 3-2-2. Lamp Does Not Light 3M 1999...

  • Page 31: Projector Image Problem

    Multimedia Projector MP8610 Troubleshooting 3-2-3. Projector Image Problem 3M 1999...

  • Page 32: 3-2.4 Lcd Not Functioning

    Multimedia Projector MP8610 Troubleshooting 3-2-4. LCD Not Functioning LCD Not Functioning? Does the menu screen appear when the projector is powered on? Refer to "Projector Does Not Power Up". Does the input device send the video signal properly? Check input device and cabling.

  • Page 33: No Sound

    Multimedia Projector MP8610 Troubleshooting 3-2-5. No Sound No Sound? Is the audio input device connected properly? Check input device cabling and input device. Is the speaker in good physical condition? Replace speaker. Are the speaker wires connected and functioning? Reconnect, repair, or replace wires as needed.

  • Page 34: General/Projection Image Troubleshooting

    Multimedia Projector MP8610 Troubleshooting 3-3. General/Projection Image Troubleshooting Past experience has shown the following problems are most common: 3-3-1. Image is Disturbed or Unstable Probable causes are: Wrong sync setting Wrong tracking value Possible solutions are: Set to factory default setting (refer to Appendix C-2).

  • Page 35: Mouse Does Not Work

    Multimedia Projector MP8610 Troubleshooting 3-3-4. Mouse Does Not Work Probable causes are: Loose cable. Wrong connection. Wrong power up sequence. Possible solutions are: The mouse emulation operates correctly only if the correct power up sequence has been used. 3-3-5. Image Off Center...

  • Page 36: Humming Noise. Slowly Passing Horizontal Bars

    Probable causes are: Power switch OFF. Projector overheated. Possible solutions are: Turn on Power switch to projector. Remove any objects blocking ventilation and allow projector to cool down. Power will return and projector will be in Standby mode.MP8610 Message Table 3M 1999...

  • Page 37: Section 4. Theory And Diagrams

    AC voltage changes rest of the projector. to DC voltage and is split. High voltage DC current 4-3-2. MP8610 Video Input and AD Conversion There are two sets of video inputs. Switching (Y) information passes through the gate array and between them is done using the input button on the timing generator.
  • Page 38 Refer to driver board information for video. RGB Out RGB out simply takes the information in its analog state and passes it through an amplifier to the terminal out. Additional electronic image smoothing occurs in the gate array of the MP8610. 3M 1999...

  • Page 39: Color Theory

    Multimedia Projector MP8610 Theory and Diagrams 4-4. Color Theory An understanding of color theory provides a background for making the convergence and white balance adjustments discussed in Section 6. 4-4-1. Color Color is a visual sensation that involves three elements— a light source, an object, and a viewer.

  • Page 40: Lcd Structure Theory

    6. LCD is the acronym for Liquid Crystal Display. The three LCD panels (Red, Green, Blue) in the MP8610 are a 1.3” square, poly-silicon design. Each LCD panel is composed of a layer of liquid crystal cells, electrodes, and glass.

  • Page 41: Lamp Theory

    4-6. Lamp Theory The MP8610 with a DC 260 watt metal halide bulb is capable of producing 550+ lumens of uniform brightness across the entire projection image. The metal halide bulbs should never be touched. When oil from your skin touches the bulb, it provides a focal point for the lamp energy.

  • Page 42: Keystone Correction

    The MP8610 is keystone corrected at a ratio of 3.9 to 1 to provide a square focused image as shown. Restated, for every 3.9 feet of projection distance the image is raised 1 foot.

  • Page 43: Optical System Layout

    Multimedia Projector MP8610 Theory and Diagrams 4-8. Optical System Layout Notice that the optics module is composed of a lamp, a fresnel lens, and an LCD panel. Lamp Side Condenser Lens Side Cold Lens Fresnel Lens Fresnel Mirror IR and...

  • Page 44: Connection Diagrams

    Multimedia Projector MP8610 Theory and Diagrams 4-9. Connection Diagrams Electrical diagrams provide a visual representation of how the projector circuitry is connected. 3M 1999...

  • Page 45: Wiring Diagrams

    Multimedia Projector MP8610 Theory and Diagrams 4-10. Wiring Diagrams Wiring diagrams provide a visual representation of how the projector is wired. 3M 1999...

  • Page 46: Internal Cabling Pinout Tables

    Multimedia Projector MP8610 Theory and Diagrams 4-11. Internal Cabling Pinout Tables The pinout tables listed in this section are designed to assists in solving internal cable failure problems. 4-11-1. Interface Board Connector Locations Power Supply Connector (J10) Pin 1 of the connector is the black cable and pin 10 of the connector is the red cable.
  • Page 47 Multimedia Projector MP8610 Theory and Diagrams 4-11-2. Audio Board Connector Locations Video Out (J1) This connector joins the audio and interface boards. Video In (J2) Allows for video input from the interface board to the audio board. 3M 1999 4-11...

  • Page 48: Computer/Video/Audio Connections

    Multimedia Projector MP8610 Theory and Diagrams 4-12. Computer/Video/Audio Connections The information provided in this section is for reference purposes. Each type of cable is shown with a pinout diagram 3M 1999 4-12...
  • Page 49 Multimedia Projector MP8610 Theory and Diagrams 3M 1999 4-13...

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