3M MP7770 Service Manual
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3M MP7770 Service Manual

3M MP7770 Service Manual

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MP7770 Multimedia Projector

Service Manual

Warranty and Limited Remedy. This product will be free from defects in material and manufacture for a period of
two years from the date of purchase. 3M MAKES NO OTHER WARRANTIES INCLUDING, BUT NOT LIMITED TO, ANY
IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. If this product is defective
within the warranty period stated above, your exclusive remedy shall be, at 3M's option, to replace or repair the 3M product or
refund the purchase price of the 3M product.
Limitation of Liability. Except where prohibited by law, 3M will not be liable for any loss or damage arising from this
3M product, whether direct, indirect, special, incidental or consequential regardless of the legal theory asserted.
3M Visual Systems Division
6801 River Place Boulevard
Austin, Texas 78726-9000
_______________________________________________________________
EPS Service Documentation
Copyright © 2002, 3M IPC. All Rights Reserved.
78-6970-8985-8

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Summary of Contents for 3M MP7770

  • Page 1: Service Manual

    IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. If this product is defective within the warranty period stated above, your exclusive remedy shall be, at 3M’s option, to replace or repair the 3M product or refund the purchase price of the 3M product.

  • Page 2: Table Of Contents

    MP7770 Table of Contents SECTION 1. MACHINE OVERVIEW Overview..............................1-1 Machine Identification..........................1-1 Cleaning ..............................1-1 Safety ..............................1-2 Specifications............................1-3 SECTION 2. DISASSEMBLY/REASSEMBLY Overview..............................2-1 Required Tools............................2-1 Steps for Removing Projector Components....................2-1 2-3-1 Remove Bottom Cover ......................2-2 2-3-2 Remove Top Cover.........................2-4 2-3-3 Remove Interface Board Plate ....................2-5...
  • Page 3 MP7770 Table of Contents SECTION 4. THEORY AND DIAGRAMS Theory of Operation ..........................4-1 Wiring Diagrams ...........................4-2 4-2-1 Wire Routing ..........................4-2 4-2-2 Wire Routing Parts Identification....................4-3 4-2-3 Component Connections ......................4-4 Cabling and Cable Connectors......................4-5 4-3-1 PC and MAC Cabling........................4-5 4-3-2 Cabling...........................4-6...

  • Page 4: Section 1. Machine Overview

    3M™ Multimedia Projector MP7770 Machine Overview 1. Machine Overview 1-1. Overview Make advanced adjustments to this projector in a clean environment with minimal dust and positive pressure. This section provides the advanced adjustment procedures needed to maintain a high quality projection image.

  • Page 5: Safety

    Machine Overview 1-4. Safety Read and understand all safety procedures before making any repairs to the MP7770 Multimedia Projector. Note When any work is being carried out on the device, the mains cable must be disconnected from the mains supply.

  • Page 6: Specifications

    3M™ Multimedia Projector MP7770 Machine Overview 1-5. Specifications 1024 35 C max 100 - 240V AC 3,0 Kg 10 C min 200 - 240V AC 50 - 63 Hz 95 F max 50 F min 36mm tele 28mm wide 1,13...

  • Page 7: Section 2. Disassembly/Reassembly

    2. Disassembly/Reassembly 2-1. Overview Disassembly and reassembly of the MP7770 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 8: Remove Bottom Cover

    3M™ Multimedia Projector MP7770 Disassembly/Reassembly 2-3-1. Remove Bottom Cover WARNING Caution To avoid electrical shocks, unplug projector To avoid burns to fingers, allow projector lamp power cord before performing any maintenance to and internal projector components to cool off prior electrical components.
  • Page 9 3M™ Multimedia Projector MP7770 Disassembly/Reassembly 4. Using steady pressure, pull upward on clip/handle to remove lamp module. 5. Close lamp door. 6. Use a #10 torx driver and remove five (5) screws on bottom of projector. 7. Remove one (1) longer screw by adjustment foot.

  • Page 10: Remove Top Cover

    3M™ Multimedia Projector MP7770 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 to and internal projector components to cool off prior electrical components.

  • Page 11: Remove Interface Board Plate

    3M™ Multimedia Projector MP7770 Disassembly/Reassembly 2-3-3. Remove Interface Board Plate WARNING Caution To avoid electrical shocks, unplug projector power To avoid burns to fingers, allow projector lamp cord before performing any maintenance to and internal projector components to cool off prior electrical components.

  • Page 12: Remove Interface Board

    3M™ Multimedia Projector MP7770 Disassembly/Reassembly 2-3-4. Remove Interface Board WARNING Caution To avoid electrical shocks, unplug projector To avoid burns to fingers, allow projector lamp power cord before performing any maintenance to and internal projector components to cool off prior electrical components.

  • Page 13: Remove Dmd Kit

    3M™ Multimedia Projector MP7770 Disassembly/Reassembly 2-3-5. Remove DMD Kit WARNING Caution To avoid electrical shocks, unplug projector To avoid burns to fingers, allow projector lamp power cord before performing any maintenance to and internal projector components to cool off prior electrical components.

  • Page 14: Remove Main Fan

    3M™ Multimedia Projector MP7770 Disassembly/Reassembly 2-3-6. Remove Main Fan WARNING Caution To avoid electrical shocks, unplug projector To avoid burns to fingers, allow projector lamp power cord before performing any maintenance to and internal projector components to cool off prior electrical components.

  • Page 15: Remove Power Supply And Flyback Converter

    3M™ Multimedia Projector MP7770 Disassembly/Reassembly 2-3-7. Remove Power Supply and Flyback Converter WARNING Caution To avoid electrical shocks, unplug projector To avoid burns to fingers, allow projector lamp power cord before performing any maintenance to and internal projector components to cool off prior electrical components.

  • Page 16: Remove Video Board

    3M™ Multimedia Projector MP7770 Disassembly/Reassembly 2-3-8. Remove Video Board WARNING Caution To avoid electrical shocks, unplug projector To avoid burns to fingers, allow projector lamp power cord before performing any maintenance to and internal projector components to cool off prior electrical components.

  • Page 17: Troubleshooting Flowcharts

    3M Multimedia Projector MP7770 Troubleshooting 3. Troubleshooting This section provides message flowcharts to aid in troubleshooting the 3M MP7770 Multimedia Projector. 3-1. Troubleshooting Flowcharts 3-1-1. Firmware Update Factory Reset Switch on unit in Standby C6/S1 Press Menü and Enter C6/S2;S9...

  • Page 18: Fan Cooling System Check

    3M Multimedia Projector MP7770 Troubleshooting 3-1-2. Fan Cooling System Check Projector switch off after approx. 5sec. Standby blinks red/yellow C6/S10 Main Fan Cartridge Fan Lamp Fan working? working? working? Check Check Check PIN1:+5V PIN1:+3V PIN1:+4V PIN2:-5V PIN2:-5V PIN2:GND C1/J11 C1/J7...

  • Page 19: Sound Check

    3M Multimedia Projector MP7770 Troubleshooting 3-1-3. Sound Check No sound? Change Connectionboard Check Audio Signal 5a/11 C1/J13 Change Interfaceboard Check Audio Signal 5a/260 C1/J6 Change Speaker 3/40  2002, 3M IPC.

  • Page 20: Video Check

    3M Multimedia Projector MP7770 Troubleshooting 3-1-4. Video Check No Video Data mode OK Change Check Video Signal Connectionboard good C1/J4 5a/11 good Change Interfaceboard 5a/260  2002, 3M IPC.

  • Page 21: No Image, Start-Up Screen Ok

    3M Multimedia Projector MP7770 Troubleshooting 3-1-5. No Image, Start-Up Screen OK No Image only Start up screen Clean Check internal Test Bad connection pattern good Interface-Engine C1/J1 good Change Interfaceboard Change DLP-Kit 5a/260 5b/440  2002, 3M IPC.

  • Page 22: No Image, No Start-Up Screen

    3M Multimedia Projector MP7770 Troubleshooting 3-1-6. No Image, No Start-Up Screen Lamp ignites, -but dark image -no start up screen Change Interfaceboard Check CW index PIN3 5a/260 C1/J14 Check Voltage Change Engine CW index 5b/400 PIN5: +1.5V C1/J14 Change Flyback-Converter...

  • Page 23: Lamp Does Not Work

    3M Multimedia Projector MP7770 Troubleshooting 3-1-7. Lamp Does Not Work Lamp doesn´t ignite Check Lamp visually Is H-Level at Change Lamp Ballast LAMPEN 6/70 PIN4 C1/J19 Change Interfaceboard Colorwheel working 5a/260 Change Engine 5b/400  2002, 3M IPC.

  • Page 24: No Function

    3M Multimedia Projector MP7770 Troubleshooting 3-1-8. No Function Projector doesn`t switch Check Mains input 8a/10 Check Lamp Door 4/20 Change Lamp Ballast Check 390V DC 6/70 C2/J3 Change Flyback- Converter Check DC-Voltage 6/10 C1/J19 Change Interfaceboard 5a/260  2002, 3M IPC.

  • Page 25: Switch Off In Hot Condition

    3M Multimedia Projector MP7770 Troubleshooting 3-1-9. Switch OFF In Hot Condition Projector switch off in hot condition Projector goes off completes -Fan run continuously -switch in Standby again after cooling down -Overtemperatur-Main Thermo switch Projector goes into Standby -Fan run continuously...

  • Page 26: Section 4. Theory And Diagrams

    3M Multimedia Projector MP7770 Theory and Diagrams 4. Theory and Diagrams This section provides the following theory and diagram information for this product: •= Theory of Operation •= Wiring Diagrams •= Cabling and Cable Connectors •= Functional Diagrams 4-1. Theory of Operation...

  • Page 27: Wiring Diagrams

    3M Multimedia Projector MP7770 Theory and Diagrams 4-2. Wiring Diagrams 4-2-1. Wire Routing NOTE: Part numbers and white descriptions are on the black following page. blue green/yellow yellow F3,15A  2002, 3M IPC.

  • Page 28: Wire Routing Parts Identification

    3M Multimedia Projector MP7770 Theory and Diagrams 4-2-2. Wire Routing Parts Identification Item Liesegang Serial Number Description Part Number Part Number Number Cable 270 green/yellow EF 0246099230 78-8118-3676-2 10001- PWB Panel BG 0245066019 78-8118-8518-1 10001- Speaker BG 0245011508 78-8118-8515-7 10001-...

  • Page 29: Component Connections

    3M Multimedia Projector MP7770 Theory and Diagrams 4-2-3. Component Connections Lamp Ignitor Temp Temp Switch Sensor Board Power Supply Receiver Key- 1 2 3 4 5 6 Board Power Fail Cartridge +12 Volt +5 Volt +3V3 Volt +3V3 Volt +2V5 Volt...

  • Page 30: Cabling And Cable Connectors

    3M Multimedia Projector MP7770 Theory and Diagrams 4-3. Cabling and Cable Connectors 4-3-1. PC and MAC Cabling NOTE: Part numbers and descriptions are on the page following the two diagrams. SVHS VIDEO RS 232 S-VHS / Composite Video 21 22 23...

  • Page 31: Pc Cabling

    3M Multimedia Projector MP7770 Theory and Diagrams 4-3-2. PC Cabling RS 232 Computer Monitor Monitor Compensation on/off Projektor Power Boosterbox 81 82 83 84 10  2002, 3M IPC.

  • Page 32: Cabling Parts Identification

    3M Multimedia Projector MP7770 Theory and Diagrams 4-3-3. Cabling Parts Identification Item Liesegang Serial Number Description Part Number Part Number Number Power cord, EU EK 0242100012 DY-0205-1354-4 10001- Power cord, UK EK 0242410012 DY-0205-1355-1 10001- Power cord, USA BG 0244100038...

  • Page 33: Cable Connectors

    3M Multimedia Projector MP7770 Theory and Diagrams 4-3-4. Cable Connectors Cinch - Cinch Video DIN 4pol mini - DIN 4pol mini Video Chinch - 3,5 Audio weiß Audio Panel - VGA GND-R GND-G GND-B HSync GND-Sync VSync Mid 0 Mid 1...
  • Page 34 3M Multimedia Projector MP7770 Theory and Diagrams Scart - Cinch Audio out - L weiß Audio out - R Video out gelb Adapter Mouse seriell Gehäuse D-Sub 9pol (male) D-Sub 9pol (female) Gehäuse D-Sub 9pol (male) Gehäuse USB Mouse Cable...
  • Page 35 3M Multimedia Projector MP7770 Theory and Diagrams Panel - MAC GND-R GND-G GND-B CSync GND-Sync HSync VSync Sense 0 D-Sub 15pol (male) HD-D-Sub 15pol (male) Sense 1 Sense 2 Diode 1N4148 Gehäuse Gehäuse Booster-Empfänger HSync VSync HD-D-Sub 15pol (female) HD-D-Sub 15pol (male) Gehäuse...

  • Page 36: Functional Diagrams

    3M Multimedia Projector MP7770 Theory and Diagrams 4-4. Functional Diagrams 4-4-1. Component Layout 7/2-C6 Key- board Tempsensor 7/25-C4 black Connection- 7/7-C1 board Interfaceboard 7/18-C3 Interfaceboard J7 J11 J19 J1 J14 J8 J9 DLP-Kit black yellow yellow black blue white IR-Receiver...

  • Page 37: Component Pin Connections

    3M Multimedia Projector MP7770 Theory and Diagrams 4-4-2. Component Pin Connections Interface board J9 J10 TI-PALMTOP 59 57 55 53 51 49 47 45 43 41 39 37 35 33 31 29 27 25 23 21 19 17 15 13 11 9...
  • Page 38 3M Multimedia Projector MP7770 Theory and Diagrams SERIAL Belegung PIN Belegung DCDIN 1 2 3 4 5 RXDI RTSO TXDO CTSI_PD DTROUT 6 7 8 9 USB-ADAPTER Belegung PCVCC 1 2 3 4 DATEN1 Belegung PIN Belegung PIN Belegung RIN11...
  • Page 39 3M Multimedia Projector MP7770 Theory and Diagrams FAN_1 Belegung +3V - +5V FANGOOD 12 3 TEMPERATURSENSOR Belegung 12 3 4 424D_CON Belegung PIN Belegung PIN Belegung PIN Belegung AUDCAM_R V+12G CAM_BAS AUDCAM_L VIDEO AUDIO_L CAM_CHR CAM_SDA BASV AUDIO_R CAM_SCL COLORWHEEL...
  • Page 40 3M Multimedia Projector MP7770 Theory and Diagrams Flyback-Converter CONTROL Belegung PIN Belegung LAMPON LAMPLIT 3A +3V3 123456 Belegung PIN Belegung PIN Belegung 2 4 6 8 101214 V+2V5 LAMPLIT0 V+3V3 PFAIL PFCON V+3V3 1 3 5 7 9 11 13...
  • Page 41 3M Multimedia Projector MP7770 Theory and Diagrams Connection board J6 J3 S_VIDEO Belegung PIN Belegung AUDIO Belegung D_AUDIO_R D_AUDIO_L 424D_CON Belegung PIN Belegung PIN Belegung PIN Belegung AUDIO_R 4 6 810 CAM_CHR AUDIO_L VIDEO AUD_L3 CAM_BAS VCAM_12 13 5 7 9...
  • Page 42 3M Multimedia Projector MP7770 Theory and Diagrams Temp-Sensor PCB_CON Belegung 1 2 3 4  2002, 3M IPC. 4-17...
  • Page 43 3M Multimedia Projector MP7770 Theory and Diagrams IR-Receiver Belegung IROUT IRVCC 12 3  2002, 3M IPC. 4-18...
  • Page 44 3M Multimedia Projector MP7770 Theory and Diagrams Keyboard 424RXX Belegung PIN Belegung SCAN0 TAST2 SCAN1 SCAN2 TASPW TAST0 LED_ROT TAST1 LED_GRUEN  2002, 3M IPC. 4-19...

  • Page 45: Power Supply

    3M Multimedia Projector MP7770 Theory and Diagrams Power Supply F3,15A DCOUT Belegung 390V CONTROL Belegung PIN Belegung LAMPON LAMPLIT PFCON 123456 ACIN Belegung  2002, 3M IPC. 4-20...

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