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Canon LV-7105 Service Manual

Service manual
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English Edition

SERVICE MANUAL

By Portable Document Format
LV-7105U/D78-5132
LV-7105E/D78-5133
DY8-1785-131 500
PREFACE
0
1
General
2
Repair
Adjustment
3
4
Troubleshooting
Parts Catalog
5
Electrical Diagrams
6
To Contents

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Summary of Contents for Canon LV-7105

  • Page 1: Service Manual

    English Edition PREFACE General SERVICE MANUAL Repair By Portable Document Format Adjustment LV-7105U/D78-5132 Troubleshooting LV-7105E/D78-5133 Parts Catalog Electrical Diagrams To Contents DY8-1785-131 500...
  • Page 3 CANON Multimedia Projector LV-7105U D78-5132 LV-7105E D78-5133 SERVICE SMANUAL...
  • Page 4 Technical Documents Application This CD-ROM is issued by Canon Inc. for qualified persons to learn technical theory and product repair. This CD-ROM covers all localities where the products are sold. For this reason, there may be information in this CD-ROM that does not apply to the product sold in your locality.

  • Page 5: Preface

    PREFACE 1. Service Manual Composition This manual contains information on servicing the product. It has the following sections. Part 1 General Information Provides the basic information needed to understand the product. (Operating instructions are not included. Refer to the product's instruction book if necessary.) Part 2 Repair Information Provides information for disassembly, reassembly, and adjustment of the product, about...

  • Page 6: General

    3. Tools & Test Equipment 1) General Purpose Tools Description Tool No. Remarks Ball Driver, 2.0mm hex CY9-5002-000 Optical Parts Removal & Adjustment Hex Key Set (w/2.0mm) CY9-5007-000 Optical Parts Removal & Adjustment Driver, Ceramic Tip (1.8mm) CY9-5003-000 Electrical Adjustments Driver, Slot (4.0mm) CY9-5004-000 Optical Parts Adjustment...

  • Page 7: Table Of Contents

    CONTENTS Page Part 1: General Information 1. FEATURES.......................1-1 1.1 Development objectives................1-1 1.2 Major Features..................1-2 1.3 LV-7105 Features (Details)...............1-3 2. LV-7105 SPECIFICATIONS ................1-5 2.1 Main unit ....................1-5 2.2 Connectors ....................1-6 2.3 Accessories ....................1-6 2.4 Other specifications ..................1-6 3. NOMENCLATURE....................1-7 3.1 Main unit ....................1-7 3.2 Top controls ....................1-8...

  • Page 8: Adjustment

    3.6 Line Filter Board Removal ................2-7 3.7 Lamp Ballast Unit Fan (FN905) Removal ..........2-8 3.8 Power Board Removal ................2-8 3.9 Optical Unit and Fan (FN901) Removal............2-9 3.10 Audio Amp. Board Removal ..............2-9 3.11 Fans (FN902, FN903, FN904) Removal ..........2-10 3.12 AC Inlet Ass’y Removal ................2-10 4.
  • Page 9 4. TEST POINTS AND LOCATIONS ..............3-20 Part 4: Troubleshooting 1. TROUBLESHOOTING..................4-1 1.1 No Power ....................4-1 1.2 No Sound ....................4-6 1.3 No Picture ....................4-7 2. CONTROL PORT FUNCTIONS ...............4-9 2.1 System Control & I/O Port Functions ............4-9 3. WAVEFORMS ....................4-11 4. IC BLOCK DIAGRAMS ..................4-14 Part 5: Parts Catalog Part 6: Electrical Diagrams 1.

  • Page 11: Part 1: General Information

    Part 1 General Information...

  • Page 13: Features

    0.7-inch liquid crystal panel that are targeted at the SOHO-HOME market. The LV-7105 is a microportable* model that is equipped with a 0.7-inch XGA panel. The LV-7105 will be added to the LV-5100 lineup of projectors equipped with SVGA panels as Canon continues to expand its multimedia projector product offerings.

  • Page 14: Major Features

    Part 1: General Information 1.2 Major Features Compact, lightweight 2.8kg/B5 file size micro-portable type Real XGA compatible, class-leading 800 ANSI lumen output Supports HDTV&DVD component input Beautiful image reproduction with minimal burring of color Equiped with Digital Keystone function Smoothly corrects for "keystone" effect caused by projector tilt, giving a square image with up to 15 degrees tilt.

  • Page 15: Lv-7105 Features (Details)

    Part 1: General Information 1.3 LV-7105 Features (Details) Brightest in the SVGA Micro Projector class - 800 ANSI Lumens 1) Large screen presentation even in brightly lit conference rooms 2) 120W UHP short arc lamp for bright images with great color balance 3) Newly developed large apature projection lens (f=28.8-34.5mm/F1.7-1.9)
  • Page 16 1) The replace lamp indicator shows when it is time for a change. 2) Lamp replacement by the user is simple. The design emphasizes the lens, as you would expect from a Canon product. * With digital compression projection, some information is lost.

  • Page 17: Lv-7105 Specifications

    Part 1: General Information 2. LV-7105 SPECIFICATIONS 2.1 Main unit 1. Type: Micro-portable LCD Projector 2. LCD panel: 0.7" polysilicon active matrix TFT x 3 4:3 aspect ratio 3. Number of pixels: 786,432 pixels (1024 H x 768 V) x 3 4.

  • Page 18: Connectors

    Part 1: General Information 18. Scanning frequency: 15KHz to 100KHz for horizontal sync. 50Hz to 100Hz for vertical sync. Up to 140MHz for dot clock 19. Audio output: 1W monaural 20. Built-in speaker: 40mm x 30mm (1.57" x 1.18"), x 1 21.

  • Page 19: Nomenclature

    Part 1: General Information 3. NOMENCLATURE 3.1 Main unit Zoom ring Projection Lens Focus Ring Air Intake Vent Speaker Power Cord Connector Lens Cover Infrared Remote Receiver Foot Lock Latch Air Intake Vent Terminals and Connectors Air Intake Vent Exhaust Vent Lamp Cover Adjustable Foot Air Filter...

  • Page 20: Top Controls

    Part 1: General Information 3.2 Top controls POWER ON-OFF BUTTON FOCUS RING WARNING TEMP. INDICATOR Turn this ring to adjust the This indicator flashes red when internal Used to turn on the projector on projected picture focus. projector temperature is too high. or off.

  • Page 21: Rear Panel Terminals

    Part 1: General Information 3.3 Rear panel terminals VIDEO INPUTS S-VIDEO INPUT (Y/VIDEO, Pb/Cb, Pr/Cr) Mini DIN 4-pin type VIDEO S – VIDEO Connect the S-Video output RCA type jacks Y – Pb/Cb – Pr/Cr from the video equipment Connect the composite video to this terminal.

  • Page 22: Computer Input Terminal

    Part 1: General Information 3.4 Computer Input terminal Connect the display output terminal of the computer to this terminal with the VGA Cable (attached). When connecting the Macintosh computer, the MAC Adapter (optional) is required. Red Input No Connect Green Input Ground (Vert.sync.) Blue Input Sense 0...

  • Page 23: Remote Control

    Part 1: General Information 3.6 Remote control ALL-OFF SWITCH When using the Remote Control Unit, turn this switch to "ON". And turn it to "ALL OFF" when it is not used. POWER BUTTON D.ZOOM BUTTON POWER KEYSTONE BUTTON VOLUME BUTTON Used to correct the keystone distortion.

  • Page 24: Operating Range

    Part 1: General Information 3.7 Operating range Point the remote control toward the projector (receiver's window) when pressing the buttons. Maximum operating range for the remote control is approximately 5m (16.4') and 60˚ in front of the projector. Precautions • Prevent the direct sunlight or strong light from lighting apparatus from striking the infrared remote receiver on the projector.

  • Page 25: Commentary

    This product follows the same design concept and coloring as the earlier models, LV- 7325/LV-7320 to establish a unified image for Canon Multimedia Projectors. Some of the major design points, which are basically the same as the other Canon Multimedia Projectors, are outlined below.

  • Page 26: Hybrid Gamma Correction

    Part 1: General Information All lenses are made from lead-free glass All lenses are made from environmentally friendly lead-free glass. 4.3 Hybrid gamma correction Hybrid gamma correction is a new feature. It combines digital gamma correction and analog gamma correction, and takes advantage of the characteristics* of both. Using the on-screen menu, the user can take advantage of this new feature to control image gradation.
  • Page 27 Part 1: General Information Fig. 1-9 1-15...

  • Page 28: Connecting

    Part 1: General Information 5. CONNECTING 5.1 Connection to the computer IBM-compatible computers or Macintosh computers (VGA/SVGA/XGA/SXGA) Desktop type Laptop type Monitor Output Serial Port PS/2 Port ADB Port Audio Output MAC Adapter (Optional) Set the slide switches following Control Cable Control Cable Control Cable the chart bellow.

  • Page 29: Connecting To The Video Equipment

    Part 1: General Information 5.2 Connecting to the video equipment Video Source (example) Component video output equipment Video Cassette Recorder Video Disc Player (DVD Player, HDTV, etc.) Composite Component S-VIDEO Output Audio Output Video Output Video Output Y Pb/Cb Pr/Cr When several display signals are input, the projector assigns priority in this order: (1) Y, Pb/Cb, Pr/Cr, (2) S-Video, (3) Video.

  • Page 30: Setting-Up The Projector

    Part 1: General Information 6. SETTING-UP THE PROJECTOR 6.1 Positioning the projector This projector is designed to project on a flat projection surface. The projector can be focused from 1.6m (5.2') to 8.0m (26.3'). Refer to the figure below to adjust the screen size. 8.0m 200”...
  • Page 31 Part 1: General Information in blurred images. 6) Screen and room brightness Do not install the projector where sunlight or lighting directly strikes on the screen. If sunlight or light from lighting strikes on the screen, image will appear whitish and difficult-to-view.

  • Page 32: Supported Computer System Mode

    Part 1: General Information 7. SUPPORTED COMPUTER SYSTEM MODE The projector judges the incoming signal from the connected personal computer and automatically selects the appropriate system mode. Some models cannot be selected depending on the computer. In this case, the message Go to PC adj. is displayed at the system box on the menu bar.

  • Page 33: Part 2: Repair Information

    Part 2 Repair Information...

  • Page 35: Safety Instructions

    Part 2: Repair Information 1. SAFETY INSTRUCTIONS WARNING: The chassis of this projector is isolated (COLD) from AC line by using the converter transformer. Primary side of the converter and lamp power supply unit circuit is connected to the AC line and it is hot, which hot circuit is identified with the line ( ) in the schematic diagram.

  • Page 36: Circuit Protections

    Part 2: Repair Information 2. CIRCUIT PROTECTIONS This projector is equipped with the following circuit protections to operate in safety. If the abnormality occurs inside the projector, it will automatically turn off by operating one of the following protection circuits. Line Filter Cover 2.1 Fuse Screw...

  • Page 37: Warning Temperature And Power Failure Protection

    Part 2: Repair Information 2.3 Warning Temperature and Power Failure Protection The TEMP WARNING indicator flashes red and the projector will automatically turn off when the internal temperature of the projector exceeds the normal temperature or when stopping cooling fans or when the internal power supply lines are failed. Check the following possible causes and wait until stopping the TEMP WARNING indicator flashing.
  • Page 38 Part 2: Repair Information Do not operate the projector with the air filter removed. The dust is stuck on the LCD panel and the mirror, and it may spoil the fine picture image. Do not put the small parts into the air filter intake vents. It result in the malfunction of the projector.

  • Page 39: Mechanical Disassemblies

    Part 2: Repair Information 3. MECHANICAL DISASSEMBLIES Mechanical disassemble should be made following procedures in numerical order. Following steps show the basic procedures, therefore unnecessary step may be ignored. The parts and screws should be placed exactly the same position as CAUTION the original otherwise it may cause loss of performance and product safety.

  • Page 40: Main Board Removal

    Part 2: Repair Information 3.3 Main Board Removal 1. Remove 9 screws and remove the main board upward. Main Board Fig. 2-6 3.4 Fuse Removal 1. Remove a screw and pull the line filter cover upward and then replace the fuse if required.

  • Page 41: Av And Component Board Removal

    Part 2: Repair Information 3.5 AV and Component Board Removal 1. Remove 3 screws and FPC cables, and then take the component board off upward. 2. Remove a screw and a grounding lead, and then take the AV board ass’y off upward.

  • Page 42: Lamp Ballast Unit Fan (Fn905) Removal

    Part 2: Repair Information 3.7 Lamp Ballast Unit Fan (FN905) Removal 1. Disconnect the thermal switch sockets. 2. Remove a screw and disconnect the lamp socket. 3. Remove 2 screws (bottom side) and a screw , and the remove the lamp ballast unit upward.

  • Page 43: Optical Unit And Fan (Fn901) Removal

    Part 2: Repair Information 3.9 Optical Unit and Fan (FN901) Removal 1. Remove 2 screws A and the thermal switch. 2. Remove a screw B and disconnect the lamp socket. 3. Remove 7 screws and pull Thermal Switch the optical unit upward. 4.

  • Page 44: Fans (Fn902, Fn903, Fn904) Removal

    Part 2: Repair Information 3.11 Fans (FN902, FN903, FN904) Removal 1. Remove 4 screws A and 3 screws B and remove the duct cover and fans (FN902 and FN903). Duct Cover 2. Remove 2 screws C and fan (FN904), and remove 2 screws D and fan holder.

  • Page 45: Optical Parts Disassemblies

    Part 2: Repair Information 4. OPTICAL PARTS DISASSEMBLIES 4.1 Projection Lens Removal 1. Remove the Cabinet top and cabinet front following to “Mechanical Disassemblies”. 2. Remove 4 screws and remove the Projection Lens. Fig. 2-16 4.2 Optical Unit Top Removal 1.

  • Page 46: Integrator Lens Ass'y Disassembly

    Part 2: Repair Information 4.3 Integrator Lens Ass’y Disassembly 1. Remove the cabinet top, front and main board following to “Mechanical Disassemblies”. 2. Remove 2 screws and take the integrator lens ass’y off upward. 3. Release 4 hooks on the holder and remove the integrator lens. Hooks B * Should be place the rugged surface of lens...

  • Page 47: Polarized Glass-In Ass'y Disassembly

    Part 2: Repair Information 4.5 Polarized Glass-in Ass’y Disassembly 1. Remove the cabinet top, front, main and component boards following to “Mechanical Disassemblies”. 2. Remove each screw and take the each polarized glass-in ass’y off upward. 3. Release 2 hooks and remove the polarized glass-in. Note: Each polarized glasses are defferent parts.

  • Page 48: Locations And Directions

    Part 2: Repair Information 4.7 Locations and Directions When the optical parts mounting or assembling, the parts must be mounted in the specified location and direction. Please follow to the figure below. Part name Part name Prism ass’y Relay lens (OUT) Integrator lens (IN) Relay lens (IN) Integrator lens (OUT)

  • Page 49: Lcd Panel/Prism Ass'y Replacement

    Part 2: Repair Information 5. LCD PANEL/PRISM ASS’Y REPLACEMENT LCD panels used for this model can not be replaced separately. Do not disassemble the LCD Panel/Prism Ass’y. These LCD panels are installed with precision at the factory. When replacing the LCD panel, should be replaced whole of the LCD panels and prism ass’y at once.

  • Page 50: Note On Lcd Panel/Prism Ass'y Mounting

    Part 2: Repair Information 5.2 Note on LCD Panel/Prism Ass’y Mounting After replacing or installing the LCD Panel/Prism ass'y, please make sure to obtain the best focus in both TELE and WIDE zoom. If the focus adjustment is required, please adjust the positioning of LCD Panel/Prism Ass’y by following the below procedure.

  • Page 51: Cleaning

    Part 2: Repair Information 6. CLEANING After long periods of use, dust and other particles will accumulate on the LCD panel, prism, mirror, polarized glass, lens, etc., causing the picture to darken or color to blur. If this occurs, clean the inside of WARNING optical unit.

  • Page 52: Lamp Replacement

    Part 2: Repair Information 7. LAMP REPLACEMENT • For continued safety, replace with a lamp assembly of the same type. • Allow the projector to cool for at least 45 minutes before you open the lamp cover. The inside of the projector can become very hot. WARNING •...

  • Page 53: Lamp Age

    Part 2: Repair Information Recommendation Should the air filter become clogged with dust particles, it will reduce the cooling fan’s effectiveness and may result in internal heat build up and short lamp life. We recommend cleaning the air filter after the projection lamp is replaced. Refer to “Air Filter Cleaning”.

  • Page 55: Part 3 Adjustment

    Part 3 Adjustment...

  • Page 57: Before Adjustments

    Part 3: Adjustment 1. BEFORE ADJUSTMENTS IC302 on the main board stores the data for the service adjustments, and should not be replaced except for the case of defective device. If replaced, it should be performed the re-adjustments following to the “Electrical Adjustments”.

  • Page 58: Adjustments After Parts Replacement

    Part 3: Adjustment 1.1 Adjustments after Parts Replacement : Adjustment necessary : Check necessary Disassembly / Replaced Parts LCD/ Polarized glass Integrator Relay Power Component Prism Main Board lens Lens Board Board Ass’y Integrator Lens Adjustment Relay Lens Adjustment Contrast Adjustment R-Contrast adjustment G-Contrast adjustment B-Contrast adjustment...

  • Page 59: Service Adjustment Menu Operation

    Part 3: Adjustment 1.2 Service Adjustment Menu Operation To enter the service mode To enter to the “Service Mode”, press and hold the MENU and NORMAL button on the projector at the same time for more than 3 seconds. The service mode display appears on the screen as follows.

  • Page 60: Service Conditions

    Part 3: Adjustment 1.3 Service Conditions When you carry out the electrical, optical service adjustment or repairing with cabinet top removal, it should be done under the service conditions listed below. If you can not keep the one of following conditions, the projector turns off automatically by operating the protection circuit.

  • Page 61: Service Adjustment Data Table

    Part 3: Adjustment 1.4 Service Adjustment Data Table These initial values are the reference data written from the CPU ROM to the memory IC when the new memory IC replaced. The adjustment items indicated with “ ” are required to readjust following to the “Electrical adjustments”. Other items should be used with the initial data value.
  • Page 62 Part 3: Adjustment No. Adjustment Item Initial Value Range Description For Fan Control 283 Ter 0 - 31 284 t 2 - 5 Temperature checking period, 0.5/1.0/1.5/2.0/2.5/3.0 sec. 285 TaH 0 - 255 286 TaL 0 - 255 287 TbH 0 - 255 288 TbL 0 - 255...

  • Page 63: Electrical Adjustments

    Part 3: Adjustment 2. ELECTRICAL ADJUSTMENTS The each circuit has been made by the fine adjustment at factory. Do not attempt to adjust the following adjustments except requiring the CAUTION readjustments in servicing otherwise it may cause loss of performance and product safety.

  • Page 64: Pc-Offset Adjustment

    Part 3: Adjustment 2.3 PC-Offset Adjustment 1. Receive the 16-step gray scale computer signal. 2. Set to COMPUTER mode. [R-Offset adjustment] 3. Connect an oscilloscope to test point “TP2211R” (+) and chassis ground (-). 4. Enter to the service mode, select item no. “275” and change data value to adjust the pedestal level and black level to be same level.

  • Page 65: Component Gain Adjustment

    Part 3: Adjustment Pedestal level = Black level Fig. 3-3 2.5 Component Gain Adjustment 1. Receive the 16-step gray scale component video signal. 2. Set to VIDEO (Component) mode. [Component-R gain adjustment] 3. Connect an oscilloscope to test point “TP2211R” (+) and chassis ground (-). 4.

  • Page 66: Av Gain Adjustment

    Part 3: Adjustment 2.6 AV Gain Adjustment 1. Receive the 16-step gray scale video signal. 2. Set to VIDEO mode. 3. Connect an oscilloscope to test point “TP2221G” (+) and chassis ground (-). 4. Enter to the service mode, select item no. “30” and change data value to adjust “a” to be 1.05 ±0.01Vp-p.

  • Page 67: Signal Center Adjustment

    Part 3: Adjustment 2.8 Signal Center Adjustment 1. Receive the 16-step gray scale computer signal. 2. Set to COMPUTER mode. [R-signal cneter adjustment] 3. Connect a digital voltmeter to test point “TP501R” (+) and chassis ground (-). 4. Adjust voltage to be 7.30 ±0.05V by using VR503. [G-signal cneter adjustment] 5.

  • Page 68: Pc/Av-Video Adjustment-1

    Part 3: Adjustment 2.10 PC/AV-Video Adjustment-1 Presetting 1. Input the 16-step gray scale video signal and computer signal. [PC/AV-video adjustment] 2. Connect an oscilloscope to test point “TP503G” (+) and chassis ground (-). 3. Enter to the service mode, select item no. “15” and change data value to adjust “b” to be 1.5 ±0.01Vp-p at each VIDEO and COMPUTER mode.

  • Page 69: Pc/Av-Video Adjustment-2

    Part 3: Adjustment 2.11 PC/AV-Video Adjustment-2 [PC-video adjustment-2] 1. Receive the 16-step gray scale computer signal. 2. Set to COMPUTER mode. 3. Connect an oscilloscope to test point “TP503G” (+) and chassis ground (-). 4. Enter to the service mode, select item no. “15” and change data value to adjust “b” to be 1.70 ±0.01Vp-p.

  • Page 70: Common Center Adjustment

    Part 3: Adjustment 2.13 Common Center Adjustment 1. Receive the 1 dot line computer signal. 2. Set to COMPUTER mode. [R-common center adjustment] 3. Project the red light component on the screen. 4. Adjust VR502 to obtain the minimum flicker on the picture. [G-common center adjustment] 5.

  • Page 71: Black Balance Adjustment

    Part 3: Adjustment 2.15 Black Balance Adjustment [PC black balance adjustment] 1. Receive the 16-step gray scale computer signal. 2. Set to COMPUTER mode. 3. Enter to the service mode, select item no. “9” (Red) or “10” (Blue), and change data values respectively to make a proper white balance at darker portion of the screen.

  • Page 72: Optical Adjustments

    Part 3: Adjustment 3. OPTICAL ADJUSTMENTS 3.1 Contrast Adujstment [Before adjustment] • Adjustment requires a 2.0mm hex wrench and a slot screwdriver. • Remove cabinet top following to “Mechanical Disassemblies”. • Input a 100% of black raster signal. Do not disconnect the Slot B connectors on main and component boards...

  • Page 73: Integrator Lens Adujstment

    Part 3: Adjustment 3.2 Integrator Lens Adujstment [Before adjustment] • Adjustment requires a 2.0mm hex driver and a slot screwdriver. • Remove cabinet top following to “Mechanical Disassemblies”. Do not disconnect the connectors on main and component boards CAUTION otherwise the projector can not be turned on. [Adjustment]] 1.
  • Page 74 Part 3: Adjustment Yellow Yellow Slot D Slot D Slot B Moving of slot B Moving of Slots D Fig. 3-13 Fig. 3-14 3-18...

  • Page 75: Relay Lens Adjustment

    Part 3: Adjustment 3.3 Relay Lens Adjustment [Before adjustment] • Adjustment requires a 2.0mm hex driver and a slot screwdriver. • Remove cabinet top following to “Mechanical Disassemblies”. Do not disconnect the connectors on main and component boards CAUTION otherwise the projector can not be turned on. [Adjustment] 1.

  • Page 76: Test Points And Locations

    Part 3: Adjustment 4. TEST POINTS AND LOCATIONS Main Board TP506B TP505B VR562 IC3301 TP1571 VR531 TP1401 VR563 TP561 VR533 VR501 IC561 TP6602 TP1451 TP571 VR532 TP1531 TP511 TP501 VR503 VR561 TP3322 IC501 IC531 TP3321 TP502R VR502 TP1501 TP501R TP531 TP541 IC811 TP504G...

  • Page 77: Troubleshooting

    Part 4 Troubleshooting...

  • Page 79: No Power

    Part 4: Troubleshooting 1. TROUBLESHOOTING 1.1 No Power 1) Periphery of chassis 1. Is fuse (F601) blown? Fuse may be opened when either the LAMP indicator or the READY indicator isn't Illuminated. Check the fuse. • For continued safety, replace with a fuse of the same type. TYPE T4.0AH 250V FUSE.
  • Page 80 Part 4: Troubleshooting 3) Main board 1. Check that the 15.5V is observed at pins 1-3 of K3C. 2. Check that the 6V is observed at pins 6-8 of K3C. 3. Check that the -5V is observed at pin 9 of K3C. 4.
  • Page 81 Part 4: Troubleshooting <Memo>...
  • Page 82 Part 4: Troubleshooting IIC BUS PSDA PSDA KEY SWITCHES ON/OFF BUTTON 17-18 KEY SW INDICATOR Check that the LAMP POWER LED LAMP indicator and READY IC1803 indicator are lighting. READY LED IC301 If both of indicators READY SYSTEM are not lighting,check the primary side of TEMP LED TEMP...
  • Page 83 Part 4: Troubleshooting IIC BUS PSDA PSDA TEMP. BOARD TEMP. TEMP. SENSOR SENSOR IC2831 IC2832 Abnormal temperature detection on the Main board. Abnormal temperature detection inside of the projector. Is projection of lamp cover inside broken or not fitting correctry ? Check the interlock switch (SW904) SW904 and lamp cover.

  • Page 84: No Sound

    Part 4: Troubleshooting 1.2 No Sound 1) Main board 1. Check that the PC/AV switching signal is correct. Pins 10 and 11 of IC5001 ....AV : L, PC : H 2. Check that audio signal is observed at following points. Pins 11-12(PC)/13-14(AV) of K10B/K50B 3.

  • Page 85: No Picture

    Part 4: Troubleshooting 1.3 No Picture board 1. Check that the Vcc-voltages(+5V, -5V) are applied to AV circuits. Pins 47-50 of K10A, Pins 47-54 of K10B ....5V Pins 39-42 of K10B ..........-5V Check IC1001, IC1002 and IC1021. 2. Check that the following input signals are observed correctly. SIGNAL K10A-pin No.
  • Page 86 Part 4: Troubleshooting PC/AV Q5112 TP211 IC5251 TP221R PC_R R/Cr/Pr PC/AV DIGITAL TP212 TP221G PC_G IC5252 IC202 MATRIX IC5201 TP213 TP221B PC_B IC5253 B/Cb/Pb IC6101 IC1001 TP7223 H-SYNC H-SYNC SYNC G-SYNC IC5282 SEP. SEP. TP7224 V-SYNC V-SYNC IC6901 IC1021 IC1002 TP218 TP5112 VIDEO...

  • Page 87: Control Port Functions

    Part 4: Troubleshooting 2. CONTROL PORT FUNCTIONS 2.1 System Control & I/O Port Functions IC Ref. No Pin/Name I/O Signal Name Function Note IC301 PortA0 ROMWEL For ICE PortA1 ROMWEH For ICE PortA2 BOOTWE For ICE PortA3 Not used Fixed High PortA4 5V_SW Power ON/OFF...
  • Page 88 Part 4: Troubleshooting IC Ref. No Pin/Name I/O Signal Name Function Note IC1806 SCLK 3-Line Serial Clock SDATA 3-Line Serial Data DAC_STLOBE Data Effective: Low S&H_STLOBE S&H Data Effective: High IRM_STLOBE White Uniformity Data Effective: Low FAN_CONT2 Fan Speed Control 2 Fan Control ON: High FAN_CONT1 Fan Speed Control 1...

  • Page 89: Waveforms

    Part 4: Troubleshooting 3. WAVEFORMS TP207 TP218 TP7223 TP208 AV VIDEO H-SYNC TP221R TP7224 TP221G TP221B V-SYNC VIDEO TPDHS TPDVS TP1401 TP1451 TP2211R PSIG for R/B R-OUTPUT and G 4-11...
  • Page 90 Part 4: Troubleshooting TP2221G TP2231B G-OUTPUT B-OUTPUT TP501 TP531 S&H S&H R-INPUT G-INPUT TP511 TP541 TP1501 TP1531 S&H S&H R-OUTPUT G-OUTPUT TP501R TP503G TP502R TP504G S&H S&H R-OUTPUT G-OUTPUT 4-12...
  • Page 91 Part 4: Troubleshooting TP561 S&H B-INTPUT TP571 TP1571 S&H B-OUTPUT TP505B TP506B S&H B-OUTPUT 4-13...

  • Page 92: Ic Block Diagrams

    Part 4: Troubleshooting 4. IC BLOCK DIAGRAMS AN5265 <AUDIO OUTPUT, IC001> FA5332M <Power Factor Control, IC01> 4-14...
  • Page 93 Part 4: Troubleshooting PW164-10RK <System Control/Scan Converter, IC301> CXA2111R <LCD Driver, IC401> 4-15...
  • Page 94 Part 4: Troubleshooting M62358FP <DAC, IC431> CXD3503R <White Uniformity Compensation, IC471> 4-16...
  • Page 95 Part 4: Troubleshooting CXA2112R <Sample & Hold, IC501, IC531, IC561, IC1501, IC1531, IC1561> STR-Z2156 <Power Switching Control, IC631> 4-17...
  • Page 96 Part 4: Troubleshooting IDT71V016S <RAM, IC811> CXA2016S <Sync Separator, IC1021> 4-18...
  • Page 97 Part 4: Troubleshooting MC10H351ML <IC1501> LM76CHMX <Thermal Sensor, IC1831, IC1832> 4-19...
  • Page 98 Part 4: Troubleshooting AV9155C <PLL, IC1961> 2XCPU OUTPUT SCLK20-22 BUFFERS CLOCK 14.318MHz crystal REFERENCE CLOCK 14.318MHz KBCLK 14.318MHz OUTPUT PERIPHERAL BUSCLK BUFFERS CLOCK FDCLK COMMCLK POWER-DOWN AGND MB40988PFQ<D/A COnverter, IC2200> 4-20...
  • Page 99 Part 4: Troubleshooting TC4053BF <Switching, IC5001> SAA7114H <Digital Video Processor, IC5101> 4-21...
  • Page 100 Part 4: Troubleshooting 4-22...

  • Page 101: Part 5 Parts Catalog

    Part 5 Parts Catalog...

  • Page 103: Parts Catalog

    Multimedia Projector LV-7105U REF.NO.D71-5132 LV-7105E D71-5133 Power Projector LV-7105J D71-5131 PARTS CATALOG...
  • Page 105 Page 1 CANON LV-7105J REF. No. D78-5131 LV-7105U D78-5132 LV-7105E D78-5133...
  • Page 106 Page 1 P A R T S L I S T REF.NO. D78-5131 D78-5132 D78-5133 SYMBOL PARTS NO. CLASS DESCRIPTION REMARKS DY4-6096-000 COVER, TOP DY4-6098-000 COVER, BOTTOM DY4-6017-000 LEG, ASS'Y DY4-6099-000 RING, NAME DY4-6019-000 COVER, FRONT DY4-6100-000 CAP, LENS DY4-6021-000 PLATE, AV DY4-6022-000 WINDOW, R/C SENSOR...
  • Page 107 Page 2 CANON LV-7105J REF. No. D78-5131 LV-7105U D78-5132 LV-7105E D78-5133...
  • Page 108 Page 2 P A R T S L I S T REF.NO. D78-5131 D78-5132 D78-5133 SYMBOL PARTS NO. CLASS DESCRIPTION REMARKS DY4-6029-000 HOLDER, INTEGRATOR IN DY4-6030-000 HOLDER, RELAY OUT DY4-6047-000 SCREW DY4-6048-000 SCREW DY4-6049-000 SCREW CY2-8232-000 SCREW DY4-6103-000 PRISM/LCD ASS'Y DY4-6052-000 LENS, INTEGRATOR IN DY4-6058-000...
  • Page 109 Page 3 CANON LV-7105J REF. No. D78-5131 LV-7105U D78-5132 LV-7105E D78-5133 (80) (78) (77) (75) (76) (79) (69) (63)
  • Page 110 Page 3 P A R T S L I S T REF.NO. D78-5131 D78-5132 D78-5133 SYMBOL PARTS NO. CLASS DESCRIPTION REMARKS DY4-6050-000 PRISM, PBS (63) DY4-6052-000 LENS, INTEGRATOR IN DY4-6053-000 LENS, INTEGRATOR OUT DY4-6054-000 LENS, CONDENSER OUT DY4-6055-000 LENS, CONDENSER, G DY4-6056-000 LENS, CONDENSER, B DY4-6057-000...
  • Page 111 Page 4 CANON LV-7105J REF. No. D78-5131 LV-7105U D78-5132 LV-7105E D78-5133 A100 A200 POWER P.C.B. A001 FN905 A901 SW902 L903 SW904 A1000 A2800 IL901 A1800 F601 A600 L901 L902 SP901 FN903 FN901 FN902 FN904 LP900...
  • Page 112 Page 4 P A R T S L I S T REF.NO. D78-5131 D78-5132 D78-5133 SYMBOL PARTS NO. CLASS DESCRIPTION REMARKS A001 DY4-6114-000 PCB ASS'Y, AUDIO A100 DY4-6109-000 PCB ASS'Y, MAIN A200 DY4-6112-000 PCB ASS'Y, COMPONENT A600 DY4-6115-000 PCB ASS'Y, LINE FILTER A901 DY4-6106-000 LAMP BALLAST ASS'Y...
  • Page 113 Page 5 CANON LV-7105J REF. No. D78-5131 LV-7105U D78-5132 LV-7105E D78-5133...
  • Page 114 Page 5 P A R T S L I S T REF.NO. D78-5131 D78-5132 D78-5133 SYMBOL PARTS NO. CLASS DESCRIPTION REMARKS DY4-6072-000 REMOTE CONTROLLER, LV-5100 DY4-5859-000 COVER, REMO-CON BATTERY CY2-8293-000 POWER CORD, AC120V FOR LV-7105U CY2-8295-000 POWER CORD, AC240V FOR LV-7105E CY2-8299-000 POWER CORD, AC100V FOR LV-7105J...
  • Page 115 Page 6 P A R T S L I S T REF.NO. D78-5131 D78-5132 D78-5133 PAGE SYMBOL PARTS NO. PAGE SYMBOL PARTS NO. CY2-8231-000 DY4-6036-000 CY2-8232-000 DY4-6037-000 SP901 CY2-8274-000 DY4-6038-000 SW904 CY2-8277-000 DY4-6039-000 CY2-8288-000 DY4-6041-000 CY2-8293-000 DY4-6042-000 CY2-8295-000 DY4-6043-000 CY2-8298-000 DY4-6044-000 CY2-8299-000 42, f...
  • Page 116 Page 7 P A R T S L I S T REF.NO. D78-5121 D78-5122 D78-5123 PAGE SYMBOL PARTS NO. DY4-6097-000 DY4-6098-000 DY4-6099-000 DY4-6100-000 DY4-6101-000 DY4-6102-000 DY4-6103-000 DY4-6104-000 DY4-6105-000 A901 DY4-6106-000 FN904 DY4-6107-000 LP900 DY4-6108-000 A100 DY4-6109-000 A1800 DY4-6110-000 A1000 DY4-6111-000 A200 DY4-6112-000 A2800...

  • Page 118: Part 6: Electrical Diagrams

    Part 6 Electrical Diagrams...

  • Page 120: Parts Description And Reading In Schematic Diagram

    Part 6: Electrical Diagrams 1. PARTS DESCRIPTION AND READING IN SCHEMATIC DIAGRAM 1. The parts specification of resistors, capacitors and coils are expressed in designated code. Please check the parts description by the following code table. 2. Some of transistors and diodes are indicated in mark for the substitution of parts name.
  • Page 121 Part 6: Electrical Diagrams Resistor Reading Example 1/2 D J 10K B Material table Tolerance table Mark Material Mark Tolerance Characteristic ±0.05 Carbon ±0.1 Example W K 8.2 Metal film Z (Carbon fuse) ±0.25 Oxide metal film B (Non-burnable) ±0.5 Solid ±1 Metal glaze...
  • Page 122 Part 6: Electrical Diagrams 2. PIN DESCRIPTION OF DIODE, TRANSISTOR AND IC Diode Diode K: Cathode A: Anode Transistor/FET Transistor/FET C: Collector D: Drain B: Base G: Gate Index E: Emitter S: Source C1 C2 C1 C2 (GND) RESET (IN) (OUT) Index Index...
  • Page 123 Circuit Block Diagram (LV-7105U/LV-7105E) DIGITAL CONVERTER IC5201 DRIVER R-SAMPLE & HOLD PC/AV-SW CONVERTER MATRIX IC2211 IC501 IC5251 DRE0-7 IC2221 R-LCD DGE0-7 IC2200 IC1001 H-SYNC IC5252 DBE0-7 IC401 PANEL H-SYNC DRA0-7/B0-7 GRO0-7/GRE0-7 IC1021 IC202 IC2231 DGA0-7/B0-7 GGO0-7/GGE0-7 Cr/Pr G-SYNC IC1002 V-SYNC IC5253 VR502 VR503...
  • Page 124 Power Supply Lines (LV-7105U/LV-7105E) IC631 T651 SWITCHING ASSY PWB, LINE FILTER CONVERTER SW904 SW902 15.5V1 15.5V1 POWER SUPPLY TRANSFORMER INTER LOCK THERMAL F601 AC CORD L601 L602 VA601 D635 FUSE D651 Q671 D612 DB611 L611 D632 15.5V D665 S-5V Q611 D652 C618 R1973, R1974...

  • Page 125: Schematic Diagrams

    Schematic Diagrams LV-7105U/E LINE FILTER MP6A HOT SIDE COLD SIDE ASSY,PWB, TERMOSTAT 1AA0B10C3110B INTER LOCK (SET TO OPEN AT 100+/-5˚C) SW904 SW902 K903S C601 C602 C603 C604 K901S S10B3370N VA601 R601 L601 L602 J11B S10B3590N J11EA321G F601 275GM 275GM 275GM 275GM J11B 2450N...
  • Page 126 Y/G-SYNC SWITCH RESET_M C5213 KZ0.01 (IC1807 19P) IC5282 480I_SW GQFY TC7W53FU-(TE12L) R303 Q303 R7281 R5298 S-5V RESET SW 1/16GJ 100C 1/16GJ 1/16GJ Q7281 5.1V 0.8V L5282 R1011 R305 L2A9 1/16GJ100C R5280 R47MG SW1001 SW10_1 1/16GJ R7283 L5281 R7288 0.6V 1/16GJ R5288 R5281 10KC...
  • Page 127 ADCDE1 R6987 S3.3V2 1/16GJ S3.3V1 R6949 1/16GZ0C C6912 C6911 C6909 C1902 25KZ0.1 25KZ0.1 25KZ0.1 GQFY GQFY 6.3EM GQFY R6951 C6901 C6913 1/16GJ 16EM 25KZ0.1 10KC 100D R1905 GQFY C1901 IC6901_121 IC6901_117 IC6901_111 1/16GZ 25KZ0.1 GQFY IC1901 TC7WH125FU J11EA120G R1908 1/16GZ R1902 R6902 K5C2...
  • Page 128 J11B2940G S3.3V1 TP802 TP801 S3.3V1 IC861 J30A S3.3V1 J30A 00102 (IC301) 00102 TC74LCX244FT C861 25KZ0.1 R820 GQFY R809 1/16GZ C807 R802 1/16GZ (IC301 3P) 3L_EN 25KZ0.1 1/16GJ GQFY 10KC (IC1806 12P) SCLK R865 (IC1803) 1/16GJ100C On-Off SW6801 IC861_3 S_CLK R861 R866 Normal SW6802...
  • Page 129 TP511 VR503 R528 7.3V R1500 R1510 1/16 C509 GZ0C 16EM L506 1/16GJ 1/16GJ 220D L2A9R47MG 100C 560C 15.5V R_IROMURA R523 R519 C523 C522 1/16GJ 1/16GJ C508 TP501 CJ390 KK1000 TP511 12KC J30A C507 CGQY GQBY 0.01 00102 C511 GQFY VR503 KZ0.01 GQFY VR502...
  • Page 130 POWER TP6601 POWER R6612 R6617 TP6601 R6611 1/16GJ 1/16GJ J30A 00102 1/16GJ 10KC 10KC BOARD J10EG 10KC BOARD 10.2V 030G K3J1 12V1 "K6K" FN901 K3J2 COMPONENT "K6J" POWER POWER K3J3 BOARD "K3A" C6611 10 11 12 16EM TP6602 TP6602 K8A6 100D J30A 00102...
  • Page 131 AFTER SW R2501 R2504 R2505 L2501 D2502 1/8GZ 1/10 1/10 1/8GJ5.6 1SS355 GJ560 GJ150 15.5V POWER_FAIL C2501 R2502 C2502 1/8GZ 16EM100D 25KZ0.1 ;16EM100F1 D2503 GQFY 1SS355 L2502 1/8GJ5.6 C2503 C2504 16EM100D 25KZ0.1 ;16EM100F1 GQFY R-PANEL C2505 25EM 22WR J11EA321G C2506 25KZ0.1 TEST C2507...

  • Page 132: Printed Wiring Board Diagrams

    Printed Wiring Board Diagrams CAUTION (LV-7105U/E) This projector is isolated from AC line by using the internal converter transformer. Please pay attention to the following notes in servicing 1. Do not touch the part on hot side (primary circuit) or both parts on hot and cold sides (secondary circuit) at the same time.
  • Page 133 AV Board (SIDE:A) R/C Board (SIDE:A) AV Board (SIDE:B) R/C Board (SIDE:B) Main Board “K8D” Component Board (SIDE:A) Component Board (SIDE:B) Main Board “K33B” R-LCD B-LCD G-LCD Panel Main Board “K33R” FN902 FN904 “K33G” “K8A” Main Board (PCB_MP6PA/PP6PA)
  • Page 134 Main Board (SIDE:A) Main Board (SIDE:B) Audio Amp Speaker Board “K6T” Component Board “K3B” FN905 Board Component “K28D” Board Temp “K3R” Board FN903 “K8H” Lamp Ballast Unit Audio Amp Board Component “K6P” Board “K3G” Component Board “K3A” Power Board “K6J” FN901 Power Board...

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