Sanyo PLC-XT10 Manuel utilisateur

Multimedia Projector

SERVICE MANUAL

PRODUCT CODE

1 122 163 00 (MD3A)

1 122 164 00 (PD3A)

1 122 164 02 (PD3C)

Original Version

REFERENCE NO. SM5110412

FILE NO.

Model No. PLC-XT10

U.S.A., Canada,

Europe, Asia, Africa

Chassis No. MD3-XT1000

NOTE: Match the Chassis No. on the unit’s

back cover with the Chassis No. in the

Service Manual.

If the Original Version Service

Manual Chassis No. does not match

the unit’s, additional Service

Literature is required.You must refer to

“Notices” to the Original Service

Manual prior to servicing the unit.

-2-

■Contents

■Safety Instructions ________________________________________________3

■Specifications____________________________________________________4

■Adjustments after Parts Replacement ________________________________5

■Circuit Protections ________________________________________________6

Fuse ______________________________________________________6

Thermal switch ______________________________________________6

Interlock switch ______________________________________________6

Warning temperature and power failure protection __________________7

■Mechanical Disassemblies ________________________________________8

■Optical Parts Disassemblies ______________________________________13

■LCD Panel/Prism Ass’y Replacement ________________________________18

■Lamp Replacement ______________________________________________19

■Optical Adjustments______________________________________________20

■Electrical Adjustments ____________________________________________24

Service Adjustment Menu Operation______________________________24

Circuit Adjustments __________________________________________25

Test Points and Locations ______________________________________30

Service Adjustment Data Table __________________________________31

Chassis over view ____________________________________________39

■Chassis Block Diagrams __________________________________________39

Inputs & video signal processing stage ____________________________40

LCD panel driving stage ______________________________________41

Audio signal processing circuit __________________________________42

Motor driving circuit __________________________________________43

System controls ______________________________________________44

Power supply & protection circuit ________________________________45

■Troubleshooting ________________________________________________46

No Power __________________________________________________46

No Picture __________________________________________________47

No Sound __________________________________________________48

Lens Motor Problems__________________________________________48

■Control Port Functions ____________________________________________49

■Waveform______________________________________________________54

■Cleaning ______________________________________________________56

■IC Block Diagrams ______________________________________________57

■Service Parts List ____________________________________________67-102

Electrical Parts List ________________________________________67-96

Mechanical Parts List ______________________________________97-102

Drawings & Diagrams

■Parts description and reading in schematic diagram ____________________ A2

■Schematic diagrams ________________________________________ A3-A10

■Printed wiring board diagrams ________________________________ A11-A15

■Pins description of ICs, transistors, diodes __________________________ A16

-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 - 25kV) 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.

DO NOT ATTEMPT TO SERVICING THE

REMOTE CONTROL UNIT.

Laser Beam may be leaked out when in disassemble

the Unit. As the Laser Beam used in this Remote con-

trol unit is harmful to the eyes.

LASER RADIATION

DO NOT STARE INTO BEAM

MAX. OUTPUT: 1mW

WAVE LENGTH: 650 ±20nm

CLASS II LASER PRODUCT

This product is complied with 21 CFR

part 1040.10

CAUTION LASER RADIATION

DO NOT STARE INTO BEAM

CLASS 2 LASER PRODUCT

LASER-STRAHLING

NICHT IN DEN STRAHL BLICKEN

LASER KLASSE 2

IEC60825-1, Am. 1 1997

MAX OUTPUT ( ) : 1 mW

WAVE LENGTH ( ) : 650±20nm

-4-

■Specifications

●The specifications are subject to change without notice.

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.

Projector Type Multi-media Projector

Dimensions (W x H x D)

11.9" x 6.4" x 16.6" (302mm x 162mm x 422mm)

(not including Adjustable Feet)

Net Weight 17.2 lbs (7.8 kg)

LCD Panel System 0.99” TFT Active Matrix type, 3 panels

Panel Resolution 1024 x 768 dots

Number of Pixels 2,359,296 (1024 x 768 x 3 panels)

Color System PAL, SECAM, NTSC, NTSC4.43, PAL-M and PAL-N

High Definition TV SIgnals 480i, 480p, 575i, 575p, 720p. 1035i and 1080i

Scanning Frequency H-sync. 15 ~ 100kHz, V-sync. 50 ~ 100Hz

Projection Image Size (diagonal) Adjustable from 31” to 300”

Horizontal Resolution 800 TV lines (HDTV)

Projection Lens F 1.7 ~ 2.1 lens with f 34 mm ~ 44 mm with motor zoom and focus

Throw Distance 4.3’ ~ 32.8’ (1.3 m ~ 10.0 m)

Motorized Lens Shift Up and Down

Projection Lamp 250 W

Computer 1 Input Terminal (VGA) HDB 15-pin Terminal x 1

Computer 2 Input Terminal DVI-I Terminal (Digital/Analog)

Computer Audio input jacks Mini Jack (stereo) x 2 (Computer 1 and Computer 2)

Video Input Jacks RCA Type x 1 (Video), RCA Type x 3 (Y, Pb/Cb, Pr/Cr),Mini DIN 4 pin x 1 (S-Video)

and RCA x 2 (Audio R and L)

Monitor Output Terminals (VGA) HDB 15-pin Terminal x 1

Audio Output Jacks Mini Jack (stereo) x 1

Control Port Connector Mini DIN 8 pin x 1

USB Connector USB Series B receptacle x 1

Built-in Speakers INT. SP. Stereo (R and L), 2 watt RMS (T.H.D. 10%)

Feet Adjustment 0˚ to 10˚

Voltage and AC 100 ~ 120V (4.6A Max. Ampere), 50/60Hz (The U.S.A and Canada)

Power Consumption AC 200 ~ 240V (2.3A Max. Ampere), 50/60Hz (Continental Europe and the U.K)

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

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

Remote Control Transmitters Power Source : AA, UM3 or R06 Type x 2

Operating Range : 16.4’ (5m) / ±30˚

Dimensions : 2.0” x 1.4” x 7.6” (50mm x 36mm x 193mm)

Net Weight : 0.35 lbs (160 g) (including batteries)

Laser Pointer : Class II Laser (Max. Output : 1mW / Wave length : 650±20nm)

-5-

Condenser lens adjustment ❍●

Relay lens adjustment ❍●

Mirror adjustment ●

Contrast Adjustment

R-Contrast adjustment ●

G-Contrast adjustment ●

B-Contrast adjustment ●

Fan voltage adjustment ●

Video center adjustment ●

NRS adjustment ●

Pedestal adjustment [PC] ●

Video gain adjustment [PC] ●

Black level adjustment [PC] ●

Luminance adjustment [PC] ●

A/D ref. voltage adjustment [Video] ●

A/D input adjustment [Video] ●

Pedestal adjustment [Video] ●

Video gain adjustment [Video] ●

A/D input adjustment [Component] ●

Pedestal adjustment [Component] ●

Video gain adjustment [Component] ●

Luminance adjustment [Video] ●

Common center adjustment ● ●

White balance adjustment ❍ ❍

Disassembly / Replaced Parts

LCD/

Prism

Ass’y

Condenser

Lens

Polarized glass

RGB

Optical Adjustments

Electrical Adjustments

● :Adjustment necessary ❍ :Check necessary

Main Board

Relay

Lens

■Adjustments after Parts Replacement

Power DC

Board

Mirror

-6-

●Interlock switch

The interlock switch (SW902) cuts off the AC mains power supply

when the lamp cover is removed. 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 (SW905) inside of the projector to

prevent the internal temperature rising abnormally. When the

internal temperature reaches near 90˚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 cabinet top following to the “Mechanical

Disassemblies”.

2. Press the reset button on the thermal switch.

CAUTION:

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

be disconnected from the AC outlet.

■Circuit Protections

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

The fuse is located inside of the projector. When either the LAMP

indicator or the READY indicator is not illuminated, fuse may be

opened. Check the fuse as following steps.

It should be used the specified fuse as follows;

How to replace the fuse

1. Remove the cabinet top following to “Mechanical

Disassemblies”.

2. Remove the fuse from fuse holder.

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

FUSE PART NO. : 645 058 8181

TYPE 8A 250V FUSE

SKYGATE CO. LTD. TYPE SG-5013 008

Fuse Line Filter Board

Interlock switch

Thermal switch

Lamp cover

-7-

Circuit Protections

●Warning temperature and power failure protection

The projector will be automatically turned off when the internal temperature of the projector exceeds the normal oper-

ating temperature, or the cooling fans stops, or the power supplies in the projector are failed.

- If the TEMP WARNING indicator (red) is flashing, it may detect the abnormal temperature inside the projector.

Check the following possible causes and wait until the WARNING TEMP indicator flashing stops, and then try to

turn on the projector.

- If both of the TEMP WARNING (red) and READY (green) indicators are flashing at the same time, It may defect the

cooling fans and power supply circuits. Check fan operation and power supply lines referring to the chapter “Power

supply & protection circuit” in the Chassis Block Diagram section.

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)

Air filter care and cleaning

The removable air filters prevent dust from accumulation on the surface of the projection lens and projection mirror.

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 reduce the life of the projector.

To clean up the air filters, follow the cleaning procedure

below:

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

from the AC outlet.

2. Turn the projector up side down and remove air filters

by pulling the latches of them upward.

3. Clean the air filters with brush or wash out the dust and

particles.

4. Replace each air filter properly. Make sure that the air

filters are fully inserted.

CAUTION:

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 intake vents. It may

result in the malfunction of the projector. The air filters are

small parts. Take care that children don’t eat or swallow it.

RECOMMENDATION

We recommend not to use the projector in dusty, smoky places. Using it in dusty place may cause the poor picture

quiality.

When using under the dusty or smoky conditions, dust may accumulate on the LCD panel and lens inside it, and

may resultantly be projected on the screen together with the picture.

When the above symptoms are noticed, please clean up the LCD panel and lens following to the “Cleaning

Method”.

Air filters

-8-

■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.1-2

Fig.1-1

Cabinet Front-Top

Lens

Front

Cover

1Turn the Lens Front Cover counter-clockwise and take it

off by pulling forward as shown in Fig.1-1.

2Remove 2 screws A(M4x10) to take the Cabinet Front-

Top off.

3Remove 5 screws B(M4x10) and then take the Cabinet

Top upward off.

Cabinet Top removal

1Screws Expression

(Type Diameter x Length) mm

T type M Type

1Remove 1 screw C (M4x10) and take the Rear Panel

ass’y upward off.

2Remove 4 screws D(T3x6) to take the AV Board from

the Rear Panel ass’y off.

3Remove 5 screws E(T3x6) to take the COM Board from

the Rear Panel ass’y off.

-9-

Mechanical Disassemblies

1Remove 1 screw A(M3x6) to take the thermal

switch(SW905).

2Remove 5 screws B(M3x6) to take the Main Board

upward.

Fig.2

Fig.3

1Remove the Lens Cover upward off.

2Remove 2 screws A(M4x10) and take the Cabinet Front off.

3Remove 1 screw B(T3x10) and take the R/C Board off.

4Remove 3 screws C(T3x8) and take the Filter Holder off.

Main Board & Thermal-SW removal

Cabinet Front removal

Main Board

Rear Panel Ass’y COM Board

AV Board

AV, COM Board & Rear Panel removal

1Remove 3 screws D(T3x10) and pull the Holder ass’y

upward off.

2Remove 4 screws E(T3x8) to take the Audio Board

from the Holder.

Audio Board removal

SW905

Lens Cover

Cabinet Front

Filter Holder

R/C Board

Audio Board

-10-

Mechanical Disassemblies

1Loosen 1 screw Aon the lamp cover and 2 screws Bon

the lamp house and the take the Lamp House off from

the cabinet bottom.

2Remove 2 screws C(M3x8) and disconnect the lamp

socket.

3Remove 5 screws D(T4x10) on the optical unit, 1 screw

E(T3x10) on the duct ass’y and then pull the Optical

Unit upward off.

Fig.5

Optical Unit removal

Lamp House

1Remove 4 screws A(T3x10) and then remove the

Speaker Base.

Speaker base removal

Fig.4

Speaker Base

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