Sanyo M4G-3000 Bedienungsanleitung

Multimedia Projector

SERVICE MANUAL

PRODUCT CODE

(M4GA) 1 122 087 00

(P4GA) 1 122 088 00

(P4GC) 1 122 088 02

Original Version

REFERENCE NO. SM5110166

FILE NO.

Model No. PLV-30

U.S.A., Canada,

Europe, Asia, Africa

U.K

Chassis No. M4G-3000

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.

■Contents

■Safety instructions ________________________________________________3

■Specifications __________________________________________________ 4

■Note on Servicing ______________________________________________ 5

■Adjustments after parts replacement ________________________________ 5

■Circuit protections ______________________________________________ 6-7

Fuse ______________________________________________________ 6

Thermal switch ______________________________________________ 7

Warning temperature and power failure protection ____________________ 7

■Mechanical disassemblies ______________________________________ 8-13

■Optical parts disassemblies ____________________________________ 14-17

■LCD panel/prism ass’y replacement ________________________________ 18

■Lamp replacement ______________________________________________ 19

■Optical adjustments __________________________________________ 20-22

●Contrast adjustment ________________________________________ 20

●Integrator lens adjustment __________________________________ 21

●Relay lens adjustment ______________________________________ 22

■Electric adjustments __________________________________________ 23-31

●Service adjustment menu operation____________________________ 23

●Circuit adjustments ______________________________________ 24-28

●Service adjustment data table______________________________ 29-30

●Test points and locations ____________________________________ 31

■Troubleshooting ______________________________________________ 32-36

●No power ______________________________________________ 32-34

●No picture ________________________________________________ 35

●No sound ________________________________________________ 36

■Control port functions ____________________________________________ 37

■Waveforms __________________________________________________ 38-40

■Cleaning ______________________________________________________ 41

■IC block diagrams ____________________________________________ 42-50

■Pins description of ICs, transistors, diodes____________________________ 51

■Parts description in schematic diagram ______________________________ 52

■Service parts lists ____________________________________________ 53-77

●Electrical parts list ______________________________________ 53-71

●Mechanical parts list ____________________________________ 72-75

●Optical parts list ________________________________________ 76-77

■Circuit block diagram ____________________________________________ A1

■Power supply lines ______________________________________________ A2

■Schematic diagrams __________________________________________ A3-A9

■Printed wiring board diagrams ________________________________ A10-A12

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 Instructions

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.

Projector Type Multi-media Projector

Dimensions (W x H x D) 7.44” x 2.93” x 11.42” (189mm x 74.5mm x 290mm)

Net Weight 5.51 lbs (2.5 kg)

LCD Panel System 0.7” TFT Active Matrix type, 3 panels

Panel Resolution 800 x 600 dots

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

Color System 6 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 ~ 80kHz, V-sync. 50 ~ 100Hz

Projection Image Size (diagonal) Adjustable from 30” to 200”

Horizontal Resolution 500 TV lines

Projection Lens F 2.0 ~ 2.3 lens with f 28mm ~ 33.6mm Manual zoom and focus

Throw Distance 4.6’ ~ 26.3’ (1.4m ~ 8.0m)

Projection Lamp 120watt type

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

AV Audio Input Jack Mini Jack (stereo)

Computer Input Jack (VGA) HDB15 Terminal x 1

Computer Audio Jack Mini Jack (stereo)

Service Port Jack Mini DIN 8 pin x 1

Audio Output Jack Mini Jack (stereo)

Internal Audio Amp. 1W RMS (monaural)

Built-in Speaker 1 speaker, 1.57” x 1.18” (40mm x 30mm)

Feet Adjustment 0˚ to 7.6˚

Voltage and AC 100 ~ 120V (2.2A Max. Ampere), 50/60Hz (The U.S.A and Canada)

Power Consumption AC 200 ~ 240V (1.1A Max. Ampere), 50/60Hz (Continental Europe and The UK.)

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

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

Remote Control Transmitters Wireless Remote Control, batteries AA, UM3 or R06 Type x 2

■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.

■Adjustments after Parts Replacement

Integrator Lens Adjustment ❍●

Relay Lens Adjustment ❍●

Contrast Adjustment

R-Contrast adjustment ●

G-Contrast adjustment ●

B-Contrast adjustment ●

Output voltage adjustment ●

FAN voltage adjustment ●●

PC offset adjustment ●

PC gain adjustment ●

Component gain adjustment ●

AV gain adjustment ●

NRS Adjustment ●

Signal center adjustment ●

PC Gamma off video adjustment ●

PC/AV signal adjustment-1 ●

PC/AV signal adjustment-2 ●

S/H clock adjustment ●

Common center adjustment ● ●

White balance adjustment ❍ ❍

Black balance adjustment ❍ ❍

Disassembly / Replaced Parts

LCD/

Prism

Ass’y

Integrator

lens

Polarized glass

RGB

Component

Board

Optical

Adjustments

Electrical Adjustments

● :Adjustment necessary ❍ :Check necessary

Power

Board Main Board

Relay

Lens

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.

To set the Fan Control to maximum, follow the Fan Control Setting Procedure below;

Fan Control Setting Procedure

1. Enter to the service mode.

2. Select adjustment item no.<29> and change data value to <0> to <1>. Now the cooling fans operate in maxi-

mum.

3. Exit from the service mode.

After finishing the works, restore the service data to <0> following to the steps 1 to 3.

* Please refer to the “Service Adjustment Menu Operation” described on page 23 for how to entering the service

mode and changing the service data.

Service Conditions:

Operating Temperature : 41˚F ~ 81˚F (5˚C ~ 30˚C)

Fans Control : Maximum

AC Power Supply : 100 ~ 120V or 200V ~ 240V

■Note on Servicing

Thermal switch

There is the thermal switch (SW902) inside of the projector to prevent the internal temperature from rising abnor-

mally. 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.

CAUTION:

Before press the reset button, disconnect the AC cord from

the projector.

-6-

■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.

Fuse

The fuse is located inside of the projector. When either the LAMP indicator or the READY indicator is not illuminat-

ed, 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 and main board following to

“Mechanical Disassemblies”.

2. Remove a screw and the line filter cover upward.

3. Remove the 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

LITTLE FUSE INC. TYPE 215004

Line Filter Cover

Fuse

Thermal switch (SW902)

Reset Button

Line Filter Board

Screw

-7-

Circuit Protections

Warning temperature and power failure protection

The TEMP WARNING indicator flashes red and the projector will automatically turn off when the internal tempera-

ture 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.

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 TEMP WARNING indicator still continues to flash, there may be defects on cooling fans or power supply cir-

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

Air filter care and cleaning

The removable air filters prevents dust from accumulation on the surface of the projection lens and projection mir-

ror. 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 2 air filters

(Large and Small) 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 filter intake vents. It

result in the malfunction of the projector. The air filter is

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

RECOMMENDATION

We recommend to avoid dusty, smoky place for operating the projector. Using in dusty place may cause the picture

of poor quality.

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

(Small)

Air filters

(Large)

-8-

Remove 5 screws and pull cabinet top upward.

1. CABINET TOP REMOVAL

■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

1) Remove 4 screws (2 top and 2 bottom) Aand take the cabinet front off

forward.

2) Remove 2 screws Band then remove RC

board and temp board.

3) Remove 4 screws Cand the speaker.

2. CABINET FRONT AND SPEAKER REMOVAL

Fig.2

RC Board

Temp Board

Remove a screw and pull the line filter cover upward and then replace the

fuse if required.

FUSE REMOVAL

-9-

Mechanical Disassemblies

Remove 9 screws and remove the main board upward.

3. MAIN BOARD REMOVAL

Fig.3

Fig.4

Line Filter Cover

Main Board

Fuse

-10-

Mechanical Disassemblies

1) Remove 3 screws Aand FPC cables,

and then take the component board off

upward.

2) Remove a screw Band a grounding

lead, and then take the AV board ass’y

off upward.

4. AV AND COMPONENT BOARD REMOVAL

Fig.5

Grounding Lead

Component Board

AV Board Ass’y

1) Remove a screw Aand remove a grounding lead.

2) Remove 2 screws Band take the line filter ass’y off upward.

3) Remove the line filter board from line filter holder.

5. LINE FILTER BOARD REMOVAL

Line Filter Board

Line Filter Holder

Fig.6

Line Filter Ass’y

Grounding Lead

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