Canon LV-S4 Manuel utilisateur

Multimedia Projector

SERVICE MANUAL

Original Version

FILE NO.

Model No. LV-S4

■Safety Instructions ................................................................................................3

■Specifications ........................................................................................................4

●Fuse ..........................................................................................................5

●Thermal switch ..........................................................................................5

●Lamp cover switch ....................................................................................5

■Circuit Protections ................................................................................................5

■Lamp Replacement ..............................................................................................7

■Mechanical Disassemblies....................................................................................8

●Electrical Parts Location ..........................................................................14

●Connection around the Main Board..........................................................15

■Optical Parts Disassemblies ..............................................................................16

■LCD Panel/Prism Ass’y Replacement ................................................................21

■Adjustments after Parts Replacement ................................................................22

■Optical Adjustments ............................................................................................23

■Electrical Adjustments ........................................................................................26

●Service Adjustment Menu Operation........................................................26

●Circuit Adjustments ..................................................................................27

●Service Adjustment Data Table ................................................................30

●Test Points and Locations ........................................................................34

■Chassis Block Diagrams ....................................................................................35

■Power Supply Lines ............................................................................................38

■Troubleshooting ..................................................................................................39

●No Power ..................................................................................................39

●No Picture ................................................................................................40

●No Sound..................................................................................................41

■Control Port Functions ........................................................................................42

■Waveforms ..........................................................................................................46

■Cleaning ..............................................................................................................47

■IC Block Diagrams ..............................................................................................48

-2-

■Contents

Drawings & Diagrams ................................................................ A1-A10

■Parts description and reading in schematic diagram ........................................ A2

■Schematic diagrams .................................................................................... A3-A6

■Printed wiring board diagrams .................................................................... A7-A8

■Pins description of ICs, transistors, diodes ...................................................... A9

- NOTE -

The different points between the previous model LV-S3 and the new model LV-S4 as follows;

- The electrical circuit (the LCD panels and the IN/OUT terminals)

- The lamp, lamp ballast and fan controls

- The optical parts

S-VIDEO IN

RGB IN

COMPONENT IN

COMPUTER /

COMPONENT

AUDIO IN

VIDEO IN SERVICE PORT

RESET

AUDIO

COMPUTER/ S-VIDEO/

COMPONENT IN

AUDIO IN

VIDEO SERVICE PORT

RESET

AUDIO OUT

(VARIABLE)

MONITOR OUT

LV-S3 LV-S4

-3-

■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 iden-

tified with the line ( ) in the schematic diagram. For continued product safety and protection of personnel

injury, servicing should be made with qualified personnel.

The following precautions must be observed.

SAFETY PRECAUTIONS

1: An isolation transformer should be connected in the

power line between the projector and the AC line

before any service is performed on the projector.

2: Comply with all caution and safety-related notes pro-

vided on the cabinet back, cabinet bottom, inside the

cabinet or on the chassis.

3: When replacing a chassis in the cabinet, always be

certain that all the protective devices are installed

properly, such as, control knobs, adjustment covers

or shields, barriers, etc.

DO NOT OPERATE THIS PROJECTOR WITHOUT

THE PROTECTIVE SHIELD IN POSITION AND

PROPERLY SECURED.

4: Before replacing the cabinet cover, thoroughly

inspect the inside of the cabinet to see that no stray

parts or tools have been left inside.

Before returning any projector to the customer, the

service personnel must be sure it is completely safe to

operate without danger of electric shock.

SERVICE PERSONNEL WARNING

Eye damage may result from directly viewing the light produced by the Lamp used in this equipment. Always turn

off Lamp before opening cover. The Ultraviolet radiation eye protection required during this servicing.

Never turn the power on without the lamp to avoid electric-shock or damage of the devices since the stabilizer

generates high voltages(15kV - 20kV) at its starts.

Since the lamp is very high temperature during units operation replacement of the lamp should be done at least

45 minutes after the power has been turned off, to allow the lamp cool-off.

PRODUCT SAFETY NOTICE

Product safety should be considered when a component replacement is made in any area of the projector.

Components indicated by mark in the parts list and the schematic diagram designate components in which

safety can be of special significance. It is, therefore, particularly recommended that the replacement of there parts

must be made by exactly the same parts.

-4-

■Specifications

This symbol on the nameplate means the product is Listed by Underwriters

Laboratories Inc. It is designed and manufactured to meet rigid U.L. safety stan-

dards against risk of fire, casualty and electrical hazards.

The CE Mark is a Directive conformity mark of the European Community (EC).

Mechanical Information

Projector Type Multi-media Projector

Dimensions (W x H x D) 10.63" x 3.27" x 7.76" (270mm x 83.1mm x 197.2mm) (not including Adjustable Feet)

Net Weight 5.1lbs (2.3 kg)

Feet Adjustment 0˚ to 8.0˚

Panel Resolution

LCD Panel System 0.5" TFT Active Matrix type, 3 panels

Panel Resolution 800 x 600 dots

Number of Pixels 1,440,000 (800 x 600 x 3 panels)

Signal Compatibility

Color System

PAL, SECAM, NTSC, NTSC4.43, PAL-M, PAL-N

High Definition TV Signal

480i, 480p, 575i, 575p, 720p, 1035i, and 1080i

Scanning Frequency

H-sync. 15 ~ 80 KHz, V-sync. 50 ~ 100 Hz

Optical Information

Projection Image Size (Diagonal) Adjustable from 34" to 200"

Projection Lens F 1.6 ~ 1.8 lens with f 18.3 mm ~ 21.9 mm with manual zoom and focus

Throw Distance 4.3' ~ 21.3' (1.3m ~ 6.5m)

Projection Lamp 160W UHP Lamp

Interface

Video Input Jack RCA Type x 1

Audio Input Jack Mini Jack (Stereo) x 1

Monitor Out Terminal (VGA) HDB15 Terminal X 1

Computer / S-Video / Component Input Terminal

(VGA) HDB15 Terminal X 1

Service Port Connector Mini DIN 8 pin x 1

Audio Output Jack Mini Jack (stereo) x 1 (Variable)

Audio

Internal Audio Amp 0.8 W RMS

Built-in Speaker 1 speaker, ø1.3" (32mm)

Power

Voltage and Power Consumption AC 100 ~ 120 V (3.6 A Max. Ampere), 50 / 60 Hz (The U.S.A and Canada)

AC 200 ~ 240 V (1.8 A Max. Ampere), 50 / 60 Hz (Continental Europe)

Operating Environment

Operating Temperature 41 ˚F ~ 95 ˚F (5 ˚C ~ 35 ˚C)

Storage Temperature 14 ˚F ~ 140 ˚F (-10˚C ~ 60 ˚C)

Remote Control Unit

Battery AAA, SUM-04 or LR03 type x 2

Operating Range 16.4’ (5m) / ±30˚

Dimensions 2.0”(W) x 0.91”(H) x 4.8”(D) (51.5mm x 23.2mm x 123mm)

Net Weight 2.11 oz (60 g) (including batteries)

* Following information differs from the model LV-S3 ;

- the mechanical and electrical specifications

-5-

■Circuit Protections

●Lamp cover switch

The lamp cover switch (SW8801) cuts off the drive signal to the

lamp circuit when the lamp cover is removed or no close com-

pletely. After opening the lamp cover for replacing the lamp ass’y,

place the lamp cover correctly otherwise the projector can not

turn on.

●Thermal switch

There is the thermal switch (SW902) inside of the projector to

prevent the internal temperature rising abnormally. When the

internal temperature reaches near 100˚C, turn off the AC main

power supply automatically.

The thermal switch is not reset to normal automatically even if the

internal temperature becomes normal. Reset the thermal switch

following procedure.

Check the resistance between terminals of thermal switch by

using the tester. If it has high impedance, thermal switch may be

in operative.

How to reset the thermal switch

1. Remove the cabinet top following to “Mechanical

Disassemblies”.

2. Press the reset button on the thermal switch with a sharp-

pointed tool.

CAUTION:

Before press the reset button, make sure that the AC cord must

be disconnected from the AC outlet.

This projector provides the following circuit protections to operate in safety. If the abnormality occurs inside the pro-

jector, it will automatically turn off by operating one of the following protection circuits.

●Fuse

A fuse is located inside of the projector. When the POWER indica-

tor is not lightning, the fuse may be opened. Check the fuse as fol-

lowing steps.

The fuse should be used with the following type;

How to replace the fuse

1. Remove the cabinet top following to “Mechanical

Disassemblies”.

2. Remove the cover on the Filter Board.

3. Remove fuse from fuse holder.

To install the fuse, take reversed step in the above.

Fuse Part No.: 423 022 2102

TYPE T4.0AH 250V FUSE

LITTEL FUSE INC. TYPE 215004

Fuse

Filter Board

Lamp Cover

Lamp Cover Switch

Thermal Switch

* Following information differs from the model LV-S3 ;

- the cabinet

-6-

●Warning temperature and power failure protection

The 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 WARNING indicator flashing.

Possible causes

- Air filter is clogged with dust particles. Remove dust from the air filter by following instructions in the “Air filter

care and cleaning” below.

- Ventilation slots of the projector are blocked. In such an event, reposition the projector so that ventilation slots are

not obstructed.

- Check if projector is used at higher temperature place (Normal operating temperature is 5 to 35 ˚C or 41 to 95˚F)

If the WARNING indicator still continues to flash, there may be defects on cooling fans or power supply circuits.

Please check fan operation and power supply lines referring to the “Power Supply Lines Chart”.

Air filter care and cleaning

The removable air filter prevents dust from accumulation on the surface of the projection lens and projection mirror.

Should the air filters become clogged with dust particles, it will reduce the cooling fan’s effectiveness and may

result in internal heat build up and adversely affect the life of the projector.

To clean up the air filters, follow the cleaning procedure

below:

1. Turn off the projector, and disconnect the AC power

cord from the AC outlet.

2. Turn the projector upside down and remove the air fil-

ters by pulling the latches upward.

3. Clean the air filters with a brush or rinse them softly.

4. When cleaning the air filters by rinsing, dry them well.

Replace the air filters properly. Make sure that the air fil-

ters are fully inserted.

CAUTION:

Do not operate the projector with the air filters removed.

Dust may accumulate on the LCD panel and the projection

mirror degrading picture quality.

Do not put the small parts into the air intake vents. It may

result in the malfunction of the projector.

RECOMMENDATION

We recommend avoiding dusty/smoky environments when

operating the projector. Use of the projector in these envi-

ronments may cause poor image quality.

When using the projector under dusty or smoky conditions,

dust may accumulate on a lens, LCD panels, or optical ele-

ments inside the projector. The condition may degrade the

quality of a projected image.

When the symptoms above are noticed, please clean up

the LCD panel and lens following to the “Cleaning

Method”.

Air filters

Circuit Protections * Following information differs from the model LV-S3 ;

- the cabinet, the air filter 3pcs. --> 4 pcs.

NOTE:

When inserting the side air filter,

make sure that the dented part

of the filter is outside.

-7-

WARNING:

- Allow a projector to cool, for at least 45 minutes before you open Lamp

Cover. The inside of a projector can become very hot.

- For continued safety, replace with a lamp assembly of the same type.

- Do not drop a lamp assembly or touch a glass bulb! The glass can

shatter and may cause injury.

Procedure

1Turn off the projector and disconnect the AC plug. Allow the projector to

cool at least for 45 minutes.

2Remove 1 screw and remove the lamp cover.

3Loosen 2 screws and pull out the lamp assembly by grasping the handle.

4Replace the lamp assembly securely and tighten 2 screws.

5Close the lamp cover and tighten 1 screw.

6Connect the AC Power Cord to the projector and turn on the projector.

Note:

- Do not reset the Lamp Replace Counter, except after lamp is replaced.

- The projector can not be turned-on with lamp cover removed, because

when the lamp cover is removed, the lamp cover switch is also released

to switch off the mains power for safety.

7Reset the Lamp Replace Counter, see below explanation.

■Lamp Replacement

1Turn the projector on, press the MENU button and the

On-Screen Menu will appear. Press the POINT

LEFT/RIGHT buttons to move the red frame pointer to

the Setting Menu icon.

2Press the POINT DOWN button to move the red

frame pointer to the Lamp counter reset item and then

press the OK button. The message “Lamp replace

counter reset?” is displayed. Move the pointer to [Yes]

and then press the OK button.

3Another confirmation dialog box appears and select

[Yes] to reset Lamp Replace Counter .

Please refer to the owners manual for further informa-

tion.

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”.

The LAMP REPLACE indicator will light yellow when

the total lamp used time reaches 2,500 hours. This is

to indicate that lamp replacement is required.

The total lamp used time is calculated by using the

below expression;

Total lamp used time = Teco + Tnormal(1+1/4)

Teco :used time in the Silent mode

Tnormal :used time in the Normal and Auto mode

You can check the lamp replace counter following to

below procedure.

1Press and hold the POWER button on the projector or

the remote control unit for more than 20 seconds.

2 The projector used time and lamp used time will be

displayed on the screen briefly.

Lamp cover

Counter

Projector

Lamp

Normal

Eco

Total

130H

24H

100H

130H

Total lamp used time

ORDER REPLACEMENT LAMP

Type No.Service Parts No.

LV-LP23 610 317 7038

How to reset Lamp Replace Counter

How to check Lamp used time

Screws

Handle

Lamp Assembly

Screw

Projector used time

* Following information differs from the model LV-S3;

- the replacement lamp number, SET --> OK button.

-8-

1Remove the Air Filter in the side of the set at first.

(If not, the filter would be broken.)

2Remove 2 screws A(M3x6) and 3 screws B(M3x8),

and then take the Cabinet Top upward off.

■Mechanical Disassemblies

Mechanical disassemble should be made following procedures in numerical order.

Following steps show the basic procedures, therefore unnecessary step may be ignored.

Caution:

The parts and screws should be placed exactly the same position as the original otherwise it may cause loss of

performance and product safety.

Fig.1

Cabinet Top removal

Screws Expression

(Type Diameter x Length) mm

T type M Type

Air filter (Panel net_side)

Cabinet Top

AT FIRST, REMOVE THE AIR FILTER.

* Following information differs from the model LV-S3 ;

- the new cabinet and mechanical disassemblies

-9-

Mechanical Disassemblies

1Remove 4 screws (M3x6) to take the Main Board upward.

Fig.3

Main Board removal

Main Board

Fig.2

R/C Board

Cabinet Front

Speaker

(SP901)

1Remove 2 screws A(M3x6) and 2 screws B(M3x6) to

take the Cabinet Front off.

2Remove 1 screw C (T3x6) to the R/C Board on the

Cabinet Front.

3Remove 2 screws D(T3x6) to take the Speaker (SP901)

off.

Cabinet Front, R/C Board and Speaker

removal

NOTE :

About the connection around the Main Board, refer to Page 15.

-10-

Mechanical Disassemblies

1Remove 1 screw (M3x6) to take the Thermal Switch

(SW902) and the Cover Spacer off.

Fig.5

Thermal SW removal

Thermal SW

Lamp Cover Spacer

Fig.4

1Take the Rear Panel ass’y upward off and remove 1

screw A (M4x4) .

2Remove 2 screws B(T3x8) to take the fan (FN903) off.

3Remove 4 screws C(T3x8) and take AV Board from the

Rear Panel ass’y off.

Rear Panel, AV Board and FN903 removal

AV Board

Rear Panel

FN903

Thermal SW Cover-A

Thermal SW Cover-B

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