Canon LV-7105E, LV-7105U, D78-5133, D78-5132 User Manual

SERVICE MANUAL

English Edition

LV-7105U/D78-5132 LV-7105E/D78-5133

By Portable Document Format

General

PREFACE

Repair

Adjustment

Troubleshooting

Parts Catalog

Electrical Diagrams

To Contents

DY8-1785-131 500

CANON Multimedia Projector

LV-7105U D78-5132 LV-7105E D78-5133

SERVICE

SMANUAL

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.

The following paragraph does not apply to any countries where such provisions are inconsistent with local law.

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First published July, 2001

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 the tools required, and their application.

Part 3 Adjustment

Provides information for disassembly, reassembly, and adjustment of the product, about the tools required, and their application.

Part 4 Troubleshooting Part 5 Parts Catalog Part 6 Electrical Diagrams

2. Model Differences

In this series of products, there are models suffixed “J”, “U”, and “E”. The only differences between the models are cosmetic, mainly the designation and rating plates. Internally, they are identical.

Main Marketing Area Japan North America Europe

Model Name

POWER PROJECTOR

MULTIMEDIA PROJECTOR MULTIMEDIA PROJECTOR

LV-7105J LV-7105U LV-7105E

3. Tools & Test Equipment

1) General Purpose Tools

2) Test Equipment (Local Purchase)

3) Other Equipment (Local Purchase)

4) Chart/Software (Attached with this manual)

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 Driver, Cross-point (#2) CY9-5005-000 Assembly & Disassembly

Description Specifications Remarks Digital Multi-meter 1mV – 500V DC Electrical Adjustment Video Signal Generator

Color Bars and Gray Scale

Electrical Adjustment Computer Signal Generator Gray Scale Electrical Adjustment Oscilloscope

100MHz response or over

Waveform checks

Description Specifications Remarks Screen Over 40” All Adjustment Personal Computer Windows 95 OS All Adjustment

Description Specifications Remarks Monitor Tester XGA and SVGA Electrical Adjustment Gray Scale Chart

Bitmap Data

Electrical Adjustment

Color Shading Correction Tool Ver. 2.0.2 White Uniformity Adjustment

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

3.3 Rear panel terminals.................................................................................1-9

3.4 Computer Input terminal ...........................................................................1-10

3.5 Control port connector ..............................................................................1-10

3.6 Remote control .........................................................................................1-11

3.7 Operating range........................................................................................1-12

4. COMMENTARY................................................................................................1-13

4.1 External appearance design.....................................................................1-13

4.2 Projection Lens.........................................................................................1-13

4.3 Hybrid gamma correction..........................................................................1-14

4.4 Fan speed control.....................................................................................1-14

5. CONNECTING..................................................................................................1-16

5.1 Connection to the computer......................................................................1-16

5.2 Connecting to the video equipment ..........................................................1-17

6. SETTING-UP THE PROJECTOR.....................................................................1-18

6.1 Positioning the projector ...........................................................................1-18

6.2 Installation precautions.............................................................................1-18

7. SUPPORTED COMPUTER SYSTEM MODE ..................................................1-20

Part 2: Repair Information

1. SAFETY INSTRUCTIONS................................................................................2-1

2. CIRCUIT PROTECTIONS ................................................................................2-2

2.1 Fuse..........................................................................................................2-2

2.2 Thermal Switch.........................................................................................2-2

2.3 Warning Temperature and Power Failure Protection ...............................2-3

2.4 Air Filter Care and Cleaning .....................................................................2-3

3. MECHANICAL DISASSEMBLIES.....................................................................2-5

3.1 Cabinet Top Removal...............................................................................2-5

3.2 Cabinet Front and Speaker Removal .......................................................2-5

3.3 Main Board Removal ................................................................................2-6

3.4 Fuse Removal...........................................................................................2-6

3.5 AV and Component Board Removal.........................................................2-7

III

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. OPTICAL PARTS DISASSEMBLIES................................................................2-11

4.1 Projection Lens Removal..........................................................................2-11

4.2 Optical Unit Top Removal.........................................................................2-11

4.3 Integrator Lens Ass’y Disassembly...........................................................2-12

4.4 Relay Lens Ass’y Disassembly.................................................................2-12

4.5 Polarized Glass-in Ass’y Disassembly......................................................2-13

4.6 Polarized Glass-out Ass’y Disassembly....................................................2-13

4.7 Locations and Directions ..........................................................................2-14

5. LCD PANEL/PRISM ASS’Y REPLACEMENT..................................................2-15

5.1 LCD Panel/Prism Ass’y Removal..............................................................2-15

5.2 Note on LCD Panel/Prism Ass’y Mounting ...............................................2-16

6. CLEANING........................................................................................................2-17

7. LAMP REPLACEMENT....................................................................................2-18

Part 3: Adjustment

1. BEFORE ADJUSTMENTS................................................................................3-1

1.1 Adjustments after Parts Replacement ......................................................3-2

1.2 Service Adjustment Menu Operation........................................................3-3

1.3 Service Conditions....................................................................................3-4

1.4 Service Adjustment Date Table ................................................................3-5

2. ELECTRICAL ADJUSTMENTS........................................................................3-7

2.1 Output Voltage Adjustment.......................................................................3-7

2.2 Fan Voltage Adjustment ...........................................................................3-7

2.3 PC-Offset Adjustment...............................................................................3-8

2.4 PC Gain Adjustment .................................................................................3-8

2.5 Component Gain Adjustment....................................................................3-9

2.6 AV Gain Adjustment .................................................................................3-10

2.7 PSIG Adjustment ......................................................................................3-10

2.8 Signal Center Adjustment.........................................................................3-11

2.9 PC/AV Gamma Off Adjustment ................................................................3-11

2.10 PC/AV-Video Adjustment-1 ....................................................................3-12

2.11 PC/AV-Video Adjustment-2 ....................................................................3-13

2.12 S/H Clock Adjustment.............................................................................3-13

2.13 Common Center Adjustment ..................................................................3-14

2.14 White Balance Adjustment......................................................................3-14

2.15 Black Balance Adjustment......................................................................3-15

2.16 Note on White Uniformity Adjustment.....................................................3-15

3. OPTICAL ADJUSTMENTS...............................................................................3-16

3.1 Contrast Adujstment .................................................................................3-16

3.2 Integrator Lens Adujstment.......................................................................3-17

3.3 Relay Lens Adjustment.............................................................................3-19

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. PARTS DESCRIPTION AND READING IN SCHEMATIC DIAGRAM..............6-1

2. PIN DESCRIPTION OF DIODE, TRANSISTOR AND IC..................................6-3

Circuit Block Diagram........................................................................................A1

Power Supply Lines ..........................................................................................A2

Schematic Diagrams.........................................................................................A3

Printed Wiring Board Diagrams.........................................................................A10

Part 1

General

Information

1. FEATURES

1.1 Development objectives

As multimedia capabilities become increasingly more important, the liquid crystal projector market is showing continued growth. In the business world, liquid crystal projectors are becoming an indispensable presentation tool.

Most liquid crystal projectors that are used in event halls or large conference rooms are equipped with a 1.3-inch or 0.9-inch liquid crystal panel; these products are designed with a particular emphasis on brightness and high resolution. The diversity of presentation machines does not stop there, however: every manufacturer of liquid crystal projectors offers compact, portable, inexpensive models equipped with a 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.

Canon is responsible for the external design and projection lens.

*Microportable: Defined by Canon to mean an LCD projector that weighs less than 3kg.

Part 1: General Information

1-1

Fig. 1-1 LV-7105

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.

● Plug and Play: Simply plug in computer or AV components and start - no adjustments

required.

1) Multiscan System automatically detects PC vertical and horizontal scan frequencies

2) Video color system: Automatically detects system (NTSC/PAL; SECAM/NTSC4.43) PAL-M/PAL-N can be selected from menu bar)

3) Tracking: Auto Imaging function automatically tracks and optimally positions image

4) Graphic User Interface (GUI): The graphic user interface simplifies image adjustments in varying environments.

5) Six Language support: English, French, German, Italian, Spanish and Japanese are supported

6) Wireless Remote Control: Remote control has mouse control functions

● Temperature-sensing Real Time Fan Control: Unobtrusive sound level for conferences

● Gamma Correction: Gives high quality reproduction of gradation

Part 1: General Information

1-2

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)

● Real projection XGA (1024 x 768 pixels) Digital compression SXGA high-definition projection *

First to use 0.7" XGA LCD panels

● Supports input from HDTV&DVD components

Color defference signal (Y, Pb/Cb, Pr/Cr) input reproduces the images with minimal burring of color. * Composite (Video) input is common to the Brightness (Y) input.

● Digital Keystone distortion compensation

When the projected image surface and the projector are offset, the image has a trapezoidal shape, but this can be smoothly compensated with offsets up to 15 degrees. A simple operation gives a square image without adjusting the height of the projector.

● Gamma Correction

To avoid washed-out whites and murky blacks the user can control the middle brightness.

● Plug and Play: Simply plug in computer or AV equipments and start - no adjustments required.

● Power Management: improves lamp life

After a predetermined time (5' 30") with no input signal, the lamp is turned off. When a signal is input, it turns back on.

● Simple wireless remote control

1) Supports all remote functions

2) P-Timer button supplies presentation elapsed time

3) Functions as the mouse control for connected PC

● Manual zoom and focus controls included

● Digital zoom enlarges any selected part of the presentation image

● Cues up the next screen without pausing or projecting an unnecessary operation

screen. (Freeze function)

● The image can be turned off without turning the power off and immediately turned back on - Image shut-off function.

Part 1: General Information

1-3

● Noise is cut in the absence of a signal - Blue Back function.

● Impressive image size - up to 200 inches.

● Reverse image function allows the unit to be suspended from the ceiling or used as a

rear-screen projector.

● Reduced lamp problems (Replace Lamp Indication)

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.

Part 1: General Information

1-4

Part 1: General Information

1-5

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. Resolution of display supported: SXGA (compression)/XGA/SVGA/VGA

5. Light source: 132W UHP lamp

6. Brightness: 800 ANSI lumens

7. Illuminance ratio at

edges of image field: 90%

8. Contrast ratio: 300:1

9. Horizontal resolution: 550 TV lines

10. Projection lens: 28.8 to 34.5mm, 1:1.7 to 1.9, x1.2

11. Lens shifting (U/D ratio): 12:1

12. Elevation adjustment: UP by 7.5˚

13. Size of projection image(in.)/ 41" (1.6m), 70" (2.8m), 100" (4.0m), 150" (6.0m),

projection distance(m): 200" (8.0m) in WIDE mode

34" (1.6m), 40" (1.9m), 70" (3.4m), 100" (4.8m), 200" (9.7m) in TELE mode

14. Digital keystone distortion

compensation angle: ±15˚

15. Noise: 39dB (normal temperature)

16. Color system: NTSC, PAL, SECAM, NTSC4.43, PAL-M, PAL-N

17. Computer supported: IBM PC or compatible, Macintosh, PC98, Workstations

Note: Some workstations are not supported.

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. Rated supply voltage: 100V AC, 50 / 60Hz (Japan) 100 to 120V AC / 200 to 240V AC, 50 / 60Hz (overseas)

22. Power consumption: 210W

23. Operating temperature: 5 to 35˚C (41 to 91˚F)

24. Storage temperature: –10 to 60˚C (14 to 140˚F)

25. Dimensions (W x H x D) 189mm x 75.5mm x 310.8mm (7.44" x 2.97" x 12.24") (Not including adjustable feet and lens) 189mm x 90.5mm x 322.7mm (7.44" x 3.56" x 12.70") (Including adjustable feet and lens)

26. Net Weight: 2.8Kg (6.17 lbs)

2.2 Connectors

1. Computer input

Signal input: HDB 15-pin x 1 Audio input: Mini stereo jack x 1 Control port: Mini DIN 8-pin x 1

2. Audio/Video input

Video input: Mini DIN 4-pin x 1 (S-Video)

RCA type x 3 (Video/Y, Pb/Cb, Pr/Cr)

Audio input: Mini stereo jack x 1

3. Audio output: Mini stereo jack x 1

2.3 Accessories

1. Remote Control Transmitter with two AA alkaline batteries

2. VGA Cable

3. Control Cable for PS/2 port

4. Lens Cover

5. Carry Bag

6. AC Power Cord

7. Plug Adapter (Japan model only)

8. Warranty Card

9. Owner's Manual

2.4 Other specifications

Service life of lamp: Approx. 1000 hours

Part 1: General Information

1-6

3. NOMENCLATURE

3.1 Main unit

Part 1: General Information

1-7

Power Cord Connector

Projection Lens

Speaker

Infrared Remote Receiver

Lens Cover

Air Intake Vent

Zoom ring

Focus Ring

Foot Lock Latch

Exhaust Vent

Air Intake Vent

Lamp Cover

Air Filter

Adjustable Foot

Terminals and Connectors

Fig. 1-2

3.2 Top controls

Part 1: General Information

1-8

WIDE

TELE

POWER MENU

MODENORMAL

LAMP

REPLACE

WARNING

TEMP.

READY

LAMP

FOCUS RING

Turn this ring to adjust the projected picture focus.

WARNING TEMP. INDICATOR

This indicator flashes red when internal projector temperature is too high.

MENU BUTTON

Use to open or close the Menu operation.

ZOOM RING

Turn this ring to adjust the projected picture size.

READY INDICATOR

This indicator lights green when the projector is ready to be turn on. And it flashes green in Power Management mode.

LAMP INDICATOR

This indicator is dim when the projector is turn on. And bright when the projector is stand-by mode.

LAMP REPLACE INDICATOR

This indicator turns to yellow when the life of the projection lamp draws to an end.

POINT BUTTON

Use to select an item of adjust the value in the menu. It is also used to pan the image in Digital Zoom mode.

MODE BUTTON

Use to select input source either Computer or Video.

SELECT BUTTON

Used to execute the item selected. It is also used to expand the image in Digital Zoom mode.

NORMAL BUTTON

Used to rest to normal picture adjustment preset by factory.

POWER ON-OFF BUTTON

Used to turn on the projector on or off.

Fig. 1-3

3.3 Rear panel terminals

Part 1: General Information

1-9

COMPUTER IN

S – VIDEO

COMPUTER

CONTROL PORT

RESET

AUDIO

Y – Pb/Cb – Pr/Cr

AUDIO OUT

VIDEO

RESET BUTTON

The micro processor may malfunction and need to rest. This can be done by pressing the Reset button with a pen, which will shut down and restart the projector.

AUDUO OUTPUT

Mini stereo Jack Connect the external audio

amplifier to this terminal.

COMPUTER INPUT

HDB 15-pin type Connect the computer output signal to this terminal.

CONTROL PORT

Mini DIN 8-pin type When controlling the computer

with the Remote Control of this projector, connect the mouse port of the computer to this terminal.

COMPUTER AUDIO INPUT

Mini stereo jack Connect the audio output

signal from the computer to this terminal

AUDIO INPUT

Mini stereo jack Connect the audio output

from the video equipment to this terminal.

S-VIDEO INPUT

Mini DIN 4-pin type Connect the S-Video output

from the video equipment to this terminal.

VIDEO INPUTS (Y/VIDEO, Pb/Cb, Pr/Cr)

RCA type jacks Connect the composite video

output signal to the Y/Video jack or connect the component Y output signals to the Y/Video, Pb/Cb and Pr/Cr jacks.

Fig. 1-4

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.

3.5 Control port connector

When controlling the computer with the remote control of this projector, connect the

mouse port of the personal computer to this terminal.

This terminal does not adapt the PC98 type mouse port.

Part 1: General Information

1-10

9 678

14 13

1112

Red Input

Ground (Horiz.sync.)

Green Input

Sense 2

Blue Input

Ground (Red)

Ground (Green)

Ground (Blue)

6 7 8

No Connect

Horiz. sync.

Ground (Vert.sync.)

Sense 1

Sense 0

Vert. sync.

Reserved

14 15

Fig. 1-5

8 7 6

-----

CLK

DATA

GND

-----

GND

-----

RXD

-----

GND

RTS

TXD GND GND

-----

ADB

-----

GND

-----

GND

PS/2 Serial ADB 1 2 3 4 5 6 7 8

Fig. 1-6

3.6 Remote control

Part 1: General Information

1-11

VOLUME

POWER

D.ZOOM

KEYSTONE

VIDEO

MUTE

P-TIMER

NO SHOW

FREEZE

AUTO IMAGE

NORMAL

COMPUTER

ALL OFF

D.ZOOM BUTTON

KEYSTONE BUTTON

Used to correct the keystone distortion.

MUTE BUTTON

MENU BUTTON

POINT BUTTON

Used to move a pointer on the menu, to adjust the item, or to pan the image in Digital Zoom mode.

SELECT BUTTON

Used to execute the item selected or to expand the image in Digital Zoom mode.

NO SHOW BUTTON

Used to turn the picture into black image.

AUTO IMAGE BUTTON

Used to operate Auto Image function.

POWER BUTTON

VOLUME BUTTON

COMPUTER BUTTON

Use to select Computer input source.

VIDEO BUTTON

Use to select Video source.

RIGHT CLICK BUTTON

Use to compress the image in Digital Zoom mode. It is also used as a PC mouse in Wireless Mouse operation.

P-TIMER BUTTON

Used to operate P-timer function.

FREEZE BUTTON

NORMAL BUTTON

Used to reset to normal picture position preset by factory.

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.

Fig. 1-7

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.

• Do not look into the laser pointer exit or point it at others.

• Do not dismantle the remote control.

Part 1: General Information

1-12

30˚

Fig. 1-8

4. COMMENTARY

4.1 External appearance design

This product follows the same design concept and coloring as the earlier models, LV7325/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.

● External Styling

The body is designed with subtle curves and the coloring and semi-transparent body panels follow the lead of the LV-7300 series. Indications of the excellent lens performance are printed around the lens to convey an impression of high picture quality.

● Operating Keys

The operation and cursor key layout is a simple, intuitive layout with grouping to insure ease of use.

● Coloring

The body of the projector is colored glacial blue. The front of the unit, with an appearance fittimg a product from an optical equipment manufacturer, has an aluminum lens ring and is colored arctic silver. The overall effect is to emphasize the lens and evoke a sophisticated image. The operating keys are a special "mercury silver" color that is easy to see in dim light and also serves as a design accent point.

4.2 Projection lens

The newly developed zoom optics system, which has XGA-compatible/F1.7 specs. The major features are follows.

● Lens construction: f=28.8 - 34.5mm/F1.7-1.9 (11 groups 12 elements)

The projection lenses are grouped into six sets, and each set plays an important role in improving the optical performance, while also helping to keep the system compact and yet sophisticated. Specifically, there is a large aperture lens group that contributes to the brightness of the system; a lens group that improves the efficiency of the illumination so that the brightness of the image is maintained all of the way to the edges of the projection screen; a lens group that contributes to color difference compensation by using lowdiffusion glass; and others. With a multi-lens optical configuration that consists of 12 lenses in 11 groups, the optical system functions as a large aperture projection lens that offers excellent resolution and low distortion.

● All lens surfaces are multi-coated

All lens surfaces are multi-coated to suppress surface reflections and to provide excellent resolution.

Part 1: General Information

1-13

● 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.

* Analog gamma correction: analogue correction is applied to the non-linear analog

circuit. In analog correction transitions between gradations are smooth.

* Digital gamma correction: Correction is applied through digital processing of the X/Y

gamma curve. Using a digital signal, varying the characteristics curve, for example, is simple. Because digital processing is involved, however, transitions between gradations can be abrupt.

4.4 Fan speed control

A new feature of this projector is Real Time Fan Control. Temperature sensors control the fan to reduce the fan noise level to an unobtrusive level (39dB) during normal operation.

There are two temperature sensors, sensor 1 measuring ambient room temperature and sensor 2 measuring the temperature in the area of the LCD panels. The outputs of the sensors are sent to the CPU, which then controls the voltage applied to the fan as outlined below.

1.If the internal temperature rises, the fan voltage is changed as shown in the figure

below. But, if the internal temperature falls, the fan voltage remains unchanged for five minutes, then is changed The fan voltage is determined by the higher of the two sensor temperatures.

2.If the temperature sensed by sensor 1 exceeds 51˚C, or the temperature sensed by

sensor 2 exceeds 57˚C, the lamp is extinguished. In this case, the main power switch must be turned off and then back on to resume operation.

3.The fan will continue to run for a maximum of 90 seconds after the power switch is

turned off.

4.If the CPU receives no response from a sensor, it determines that the sensor is

missing or broken and immediately shuts down the projector.

5.In Service Mode (when operating at high altitude) the fan operates at maximum

voltage regardless of room temperature.

Part 1: General Information

1-14

Part 1: General Information

1-15

Fan Drive Voltage

13V

12V

11V

10V

ûC

41ûC 47ûC

Room Temperature:

Sensor 1: Sensor 2:

ûC 37ûC

49ûC 51ûC 55ûC 57ûC

Unit shutdown Temperature

Fan Noise: 39dB Fan Noise: 43dB

Intake Fan

Exhaust Fan

Fig. 1-9

5. CONNECTING

5.1 Connection to the computer

Part 1: General Information

1-16

COMPUTER IN

S – VIDEO

COMPUTER

CONTROL PORT

RESET

AUDIO

Y – Pb/Cb – Pr/Cr

AUDIO OUT

VIDEO

13" MODE (640 x 480) 16" MODE (832 x 624) 19" MODE (1024 x 768)

OFFON ON

ON ON ON ON

OFF OFF OFF

OFFOFF OFF OFF

OFF OFF OFF OFF

1 2 3 4 5 6

OFF OFFON ONON ON21" MODE (1152 x 870)

DIP

2 3 4 5 6

OFF

IBM-compatible computers or Macintosh computers (VGA/SVGA/XGA/SXGA)

VGA Cable

(Attached)

Monitor Output

Desktop type Laptop type

Speaker (Stereo)

Audio Amplifier

Control Cable for Serial Port (Optional)

Serial Port PS/2 Port Audio Output

Audio Input

CONTROL PORT

AUDIO OUT

COMPUTER AUDIO IN

COMPUTER IN

ADB Port

Control Cable for PS/2 Port (Attached)

Control Cable for ADB Port (Optional)

Terminal Terminal

Audio Cable

Mini Stereo type (Not supplied)

Audio Cable

Mini Stereo type (Not supplied)

Use one of these Control Cables corresponding with the terminal of your computer.

Set the switches as shown in the table below depending on the Display Resolution that you want to use before you turn-on the projector and computer.

MAC Adapter

(Optional) Set the slide

switches following the chart bellow.

Terminal

Fig. 1-10

5.2 Connecting to the video equipment

Part 1: General Information

1-17

COMPUTER IN

S — VIDEO

COMPUTER

CONTROL PORT

RESET

AUDIO

Y — Pb/Cb — Pr/Cr

AUDIO OUT

VIDEO

Video Cable

(Not supplied)

S-VIDEO Output

Audio Input

Audio Output

Y Pb/Cb Pr/Cr R L

AV AUDIO IN

S-VIDEO

Y-Pb/Cb-Pr/Cr

VIDEO

AUDIO OUT

Composite

Video Output

Component

Video Output

Video Cassette Recorder Video Disc Player

Video Source (example)

Component video output equipment

(DVD Player, HDTV, etc.)

S-Vdeo Cable

(Not supplied)

Audio Cable

RCA-Mini Stereo Type (Not supplied)

Audio Cable

Mini Stereo type (Not supplied)

Speaker (Stereo)

Audio Amplifier

When several display signals are input, the projector assigns priority in this order: (1) Y, Pb/Cb, Pr/Cr, (2) S-Video, (3) Video.

If the desired input is not selected automatically, use the video input menu to select it.

Fig. 1-11

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.

6.2 Installation precautions

1) Temperature of air discharged from exhaust vent

Hot air is discharged from the exhaust vent. Do not put the object in the way of this hot air.

2) Installation site

Do not install the projector in humid or duty locations, or locations subject to a lot of oil mist or cigarette smoke. Doing so may cause dirt to adhere to the lenses, mirrors and other optical parts, resulting in impaired image quality. Also, do not install the projector in high- or low-temperature locations.

3) Operating temperature range: 5˚C to 35˚C

4) Storage temperature range: –10˚C to 60˚C

5) Condensation

Do not move the projector suddenly from a low-temperature location to a hightemperature location, or suddenly raise the room temperature. Doing so can cause moisture in the air to condense on the lenses and mirrors of the projector, resulting

Part 1: General Information

1-18

200”

167”

150”

125”

100”

83”

60” 50”

41”

8.0m

6.0m

4.0m

2.4m

1.6m

34”

WIDE END

TELE END

Screen Size (W x H)mm

Height(H1)

34”

Height(H2)

690 x 518

478mm

40mm

60”

1219 x 914

844mm

70mm

100”

2032 x 1524

1407mm

117mm

150”

3048 x 2286

2110mm

176mm

200”

4064 x 3048

2814mm

234mm

Fig. 1-12

+ 104 hidden pages

Canon LV-7105E, LV-7105U, D78-5133, D78-5132 User Manual

PREFACE

CONTENTS

Part 1

1. FEATURES

2. LV-7105 SPECIFICATIONS

3. NOMENCLATURE

4. COMMENTARY

5. CONNECTING

6. SETTING-UP THE PROJECTOR