Sanyo PLC-SU50S Bedienungsanleitung

Multimedia Projector

SERVICE MANUAL

PRODUCT CODE

1 122 217 00 (MA7A)

1 122 218 00 (PA7A)

1 122 218 02 (PA7C)

Original Version

REFERENCE NO. SM5110511-00

FILE NO.

Model No. PLC-SU50S

U.S.A., Canada,

Europe, Asia, Africa

U.K.

Chassis No. MA7-SU50S00

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

■ Contents________________________________________________________2

■ Safety Instructions ________________________________________________3

■ Specifications ____________________________________________________4

■ Circuit Protections ________________________________________________5

● Fuse ____________________________________________________5

● Thermal switch ____________________________________________5

● Lamp cover switch __________________________________________5

● Warning temperature and power failure protection ________________6

■ Lamp Replacement ______________________________________________7

■ Mechanical Disassemblies__________________________________________8

■ Optical Parts Disassemblies ______________________________________12

■ Adjustments ____________________________________________________17

● Adjustments after Parts Replacement __________________________17

■ Optical Adjustments ______________________________________________18

■ Electrical Adjustments ____________________________________________21

● Service Adjustment Menu Operation____________________________21

● Circuit Adjustments ________________________________________22

● Test Points and Locations ____________________________________26

● Service Adjustment Data Table ________________________________27

■ Chassis Block Diagrams __________________________________________34

Chassis over view ____________________________________________34

Inputs & video signal processing stage ____________________________35

LCD panel driving stage ______________________________________36

Audio signal processing circuit __________________________________37

System controls ______________________________________________38

Power supply & protection circuit ________________________________39

Fan control circuit ____________________________________________40

■ Troubleshooting ________________________________________________41

No Power __________________________________________________41

No Picture __________________________________________________42

No Sound __________________________________________________44

■ Control Port Functions ____________________________________________45

■ Waveform ____________________________________________________49

■ Cleaning ______________________________________________________50

■ IC Block Diagrams ____________________________________________51-57

■Service Parts List ____________________________________________58-87

Electrical Parts List ________________________________________59-82

Mechanical Parts List ______________________________________83-89

Drawings & Diagrams

■Parts description and reading in schematic diagram ____________________ A2

■Schematic diagrams ________________________________________ A3-A10

■Printed wiring board diagrams ________________________________ A11-A14

■Pins description of ICs, transistors, diodes __________________________ A15

-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 control unit is harmful to the eyes.

-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.

0.8" TFT Active Matrix type, 3 panels

Multi-media Projector

6.0 lbs (2.7 kg)

11.73" x 2.8" x 8.43" (298mm x 71mm x 214mm)

(not including raised portions)

800 x 600 dots

1,440,000 (800 x 600 x 3 panels)

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

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

Adjustable from 33” to 300”

1 speaker, ø1.1" (28mm)

41 ˚F ~ 95 ˚F (5 ˚C ~ 35 ˚C)

14 ˚F ~ 140 ˚F (-10 ˚C ~ 60 ˚C)

Projector Type

Net Weight

Dimensions (W x H x D)

Panel Resolution

Number of Pixels

Color System

Scanning Frequency

Projection Image size (Diagonal)

Built-in Speaker

Operating Temperature

Storage Temperature

LCD Panel System

●The specifications are subject to change without notice.

F 1.7 ~ 2.1 lens with f 26.7 mm ~ 32.0 mm with manual zoom and focus

4.3’ ~ 32.8’ (1.3 m ~ 10.0 m)

200 W

RCA Type x 1 (Video) and Mini DIN 4 pin x 1 (S-Video)

Projection Lens

Throw Distance

Projection Lamp

Video Input Jacks

RCA Type x 2

Audio Input Jacks

DVI-I Terminal (Digital/Analog) (HDCP compatible)

Mini Jack (stereo) x 1

Mini DIN 8 pin x 1

Mini Jack (stereo) x 1 (variable with volume)

1.0 W RMS

Computer Input 1 Terminal

Computer / Component Audio Input Jack

Service Port Connector

Audio Output Jack

Internal Audio Amp

0˚ to 11.8˚

Feet Adjustment

Power Source : AA, UM3 or R06 Type x 2

Operating Range : 16.4’ (5m) / ±30˚

Dimensions : 2.0” x 1.0” x 7.1” (50mm x 27mm x 181mm)

Net Weight : 0.34 lbs (154 g) (including batteries)

Laser Pointer : Class II Laser (Max. Output : 1mW / Wave length : 640

660nm)

Remote Control

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

High Definition TV Signal

USB Series B receptacle x 1

USB Connector

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 and The U.K.)

Voltage and

Power Consumption

Computer Input 2 / Component Input /

Monitor Output Terminal

(VGA) HDB 15 Terminal x 1 (switch to use this terminal)

●LCD panels are manufactured to the highest possible standards. Even though 99.99% of the pixels are effective, a tiny

fraction of the pixels (0.01% or less) may be ineffective by the characteristics of the LCD panels.

●Lamp cover switch

The lamp cover switch (SW901) cuts off the drive signal to the

lamp circuit when the lamp cover is removed or not closed 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

detect the internal temperature rising abnormally. When the inter-

nal temperature reaches near 90˚C, it cuts off the AC main power

supply .

The thermal switch cannot be reset itself automatically even if the

internal temperature becomes normal. Reset the thermal switch

following to the below procedure.

How to reset the thermal switch

1. Insert the sharp tool like a screwdriver into a hole on the cabi-

net bottom.

2. Press the reset button on the thermal switch with the screw-

driver.

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;

Fuse replacing steps

1. Remove the cabinet top and cabinet front following to

“Mechanical Disassemblies”.

2. Replace the new one with the specified type.

Fuse Part No.: 423 021 7801

TYPE T6.3AH 250V FUSE

LITTLE FUSE INC. TYPE 21506.3

-5-

Thermal switch (SW902)

Fuse

■Circuit Protections

-6-

Circuit Protections

●Warning temperature and power failure protection

The projector will be automatically turned off when the internal temperature of the projector is abnormally high, or

the cooling fans stop spinning, or the power supplies in the projector are failed.

- If the WARNING indicator is flashing, it may detect the abnormal temperature inside the projector. Check the fol-

lowing possible causes and wait until the WARNING indicator stops flashing, and then try to turn on the projector.

- If the WARNING indicator lights red, it may defect the cooling fans or power supply circuits. Check fans operation

and power supply lines referring to the chapter “Power supply & protection circuit” in the Chassis Block Diagram

section.

Possible causes

- Air filters are clogged with dust particles. Remove dust from the air filters 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 filter prevents 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 it upward.

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

particles.

4. 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 small parts into the air intake vents. It may result

in malfunction of the projector.

RECOMMENDATION

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

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 filter

-7-

■Lamp Replacement

The LAMP REPLACE indicator will light yellow when

the total lamp used time reaches 2000 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+1/3)

Teco:used time in the Eco mode

Tnormal :used time in the Normal mode

You can check the lamp used time following to the

below procedure.

1Press and hold the POWER ON-OFF button on the

projector for more than 20 seconds.

2 The projector used time and lamp used time will be

displayed on the screen briefly as follows.

WARNING:

- 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.

- Do not drop the lamp module or touch the glass bulb! The glass can

shatter and cause injury.

Procedure

1Turn off the projector and disconnect the AC cord. Allow the projector

to cool for at least 45 minutes.

2Loosen 1 screws with a screwdriver and remove the lamp cover.

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

handle.

4Replace the lamp with a new one and tighten the 2 screws back into

position. Make sure that the lamp is set properly. Replace the lamp

cover and tighten the screw.

5Connect the AC cord to the projector and turn on.

6Reset the Lamp Replace Counter, see below explanation.

Note:

- The projector cannot 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 lamp circuit.

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

On-Screen Menu will appear. Press the Point

Left/Right button 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 SELECT button. The message "Lamp replace

counter Reset?" is displayed. Move the pointer to

[Yes] and then press the SELECT button.

3Another confirmation dialog box appears and select

[Yes] to reset the Lamp replace counter.

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”.

Counter

Projector 525H

Lamp

Normal 150H

Eco 375H

Total 575H

Total lamp used time

How to reset Lamp Replace Counter

How to check Lamp used time

ORDER REPLACEMENT LAMP

Type No.Service Parts No.

POA-LMP65 610 307 7925

Lamp

Lamp Cover Screw

Screw

Handle

Screw

Projector used time

Fig.1

Cabinet Top

Screws Expression

(Type Diameter x Length) mm

T type M Type

FN901

-8-

1Remove 5 screws A(M3x8) and pull the Cabinet Top upward off.

2Loosen a hook B, disconnect terminal “K6J” on the Main Board and then

pull the fan duct ass’y upward off.

3Remove 2 screws C(T3x6) and remove fan “FN901”.

zCabinet Top, FN901 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.

-9-

Mechanical Disassemblies

1Remove 2 screws A (M3x8), 3 screw B (M2.5x6) and disconnect terminal

“K8D” on the Main Board.

2Pull the Cabinet Front forward off and remove 1 screw C (T3x6) to take the

R/C Board off.

3Disconnect terminal “K8P” on the Main Board and remove fan “FN902”.

xCabinet Front, R/C Board, FN902 removal

R/C Board

Fig.2

1Remove 7 screws A (M2.5x6) and 2 screws B (M2.5x6).

2Remove a shield cover (black) and disconnect terminals “K8N”, “K6L”,

K8H”, “K8P”, K5B”, “K5G”, “K5R”, K6J”, “K8R” and “K8S” on the Main

Board.

3Remove main board upward off.

cMain Board removal

Main Board

FN902

Fig.3

1Remove 6 screws A(T3x8) and disconnect terminal “K6A” on the lamp bal-

last board.

2Pull the Optical Unit upward off from the cabinet bottom.

-10-

Mechanical Disassemblies

Fig.5

bOptical Unit removal

1Pull the speaker “SP901” upward off from the speaker groove.

2Remove each screw A(M4x6) to release grounding wires.

3 Pull the Rear Panel ass’y upward off.

4Remove 4 screws B(T3x6) and remove the AV Board and remove 3

screws C(T3x6) and remove the DVI Board.

Fig.4

vSpeaker, AV and DVI Board removal

DVI board

AV board

Speaker

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