EMP-8000 _9000 Service Manual

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SXGA/XGA Data Projector

SERVICE MANUAL


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Revision:A SEIKO EPSON


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SEIKO EPSON Revision:A

Contents

Chapter 1 Product general

1.1. PRODUCT GENERAL ............................................................................ 1-21.2. PART NAME ........................................................................................... 1-31.2.1. Outside View of Main Frame ........................................................... 1-31.2.2. Inside view of main frame................................................................ 1-51.2.3. Outside View of Remote Controller ................................................. 1-6

1.3. MAIN COMPORNENT ............................................................................ 1-71.4. SPECIFICATIONS ................................................................................ 1-12

1.4.1. Main unit specifications .................................................................1-121.4.2. Accessory specification .................................................................1-13

1.5. INTERFACE SPECIFICATION ............................................................. 1-151.5.1. Computer 1 (The picture input of analogue RGB from Computer) 1-151.5.2. Audio 1 (The voice input from computer) ...................................... 1-151.5.3. Audio Out ......................................................................................1-161.5.4. Monitor Out.................................................................................... 1-161.5.5. S-Video.......................................................................................... 1-161.5.6. Video In / Audio L/R ......................................................................1-171.5.7. Mouse / Com 1/2 ........................................................................... 1-171.5.8. Remote.......................................................................................... 1-18

Chapter 2 Theory of operation

2.1. Hardware Configulation .......................................................................... 2-22.1.1. Process Outline ............................................................................... 2-32.1.2. Electrical System............................................................................. 2-42.1.3. Optical System Connections (Optical Engine) ................................ 2-4

2.2. Filter unit / Safety switch ......................................................................... 2-72.2.1. Filter unit circuit block...................................................................... 2-7

2.3. Power Supply Unit .................................................................................. 2-82.3.1. Power supply unit circuit block ........................................................2-8

2.4. Ballast unit ............................................................................................ 2-112.5. Main Board Assy Unit ........................................................................... 2-132.6. Driver Board Assy ................................................................................. 2-192.7. AU Board Assembly .............................................................................. 2-22

2.8. IF Units.................................................................................................. 2-232.9. Connector Boarrd U Assembly / Connector Board L Assy ...................2-262.10. RC Receptor Board Assembly ............................................................ 2-282.11. Speaker Unit ....................................................................................... 2-292.12. Light Guide Unit .................................................................................. 2-302.13. Lamp Inner Housing............................................................................ 2-322.14. Sensor / Switch ................................................................................... 2-36

2.14.1. Interlock Switch (A part of filter unit )........................................... 2-372.14.2. Safety Switch............................................................................... 2-382.14.3. Thermistor and temperature sensor operation ............................2-38

2.15. Fan Operation ..................................................................................... 2-40

2.16. LED indicator ......................................................................................2-432.17. Operation Panel (Upper Case Unit) .................................................... 2-44


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Chapter 3 Disassembly and assembly

3.1. DISASSEMBLY AND ASSEMBLY PROCEDURES .............................. 3-23.2. DISASSEMBLING THE MAIN UNIT ....................................................... 3-5

3.2.1. Disassembly flow chart.................................................................... 3-53.2.2. Lamp Cover Unit ............................................................................. 3-6

3.2.3. Lamp Inner Housing ........................................................................ 3-73.2.4. Air Filter ........................................................................................... 3-73.2.5. Front Case....................................................................................... 3-83.2.6. Projection Lens................................................................................ 3-83.2.7. Upper Case Unit .............................................................................. 3-93.2.8. Main Board Assy Unit .................................................................... 3-113.2.9. IF unit ............................................................................................3-113.2.10. IF Panel Unit................................................................................ 3-133.2.11. Optical Engine ............................................................................. 3-133.2.12. Power Supply Unit ....................................................................... 3-163.2.13. Ballast Unit .................................................................................. 3-16

3.2.14. Filter Unit ..................................................................................... 3-173.2.15. Thermistor LAMP ........................................................................3-173.2.16. Safety Switch............................................................................... 3-18

Chapter 4 Troubleshooting

4.1. Before Starting Troubleshooting Procedures.......................................... 4-24.1.1. Tools and Accessories Required for Troubleshooting..................... 4-24.1.2. Field Replacement Parts ................................................................. 4-2

4.2. Entry........................................................................................................ 4-3


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INTRODUCTIONThis Service Manual describes of the hardware information which is necessary for the smoothfield service of the SXGA DATA PROJECTOR EMP-9000 and XGA DATA PROJECTOREMP-8000 and the trouble shooting.As the primary technologies will be supplied with the technical information, you may updatethis manual.

HOW TO USE THE SERVICE MANUALSince the service manual describes the topics which may be required in the field mainte-nance, you may utilize this for repair or diagnosis of failures. The contents are as following.Before you start the maintenance service, read every safety precautions and observe safetyprecautions and observe safety rules.

VCCI RADIO FREQUENCY INTERFERENCE SELF RESTRICTIONThis product is the type 1 information equipment and uses radio frequency energy and fullycomplies with the limits for the specifications in the computer information equipment radiointerference regulation (VCCI rules). If not installed and used properly manufacturer's instruc-tions, may cause interference to radio and television reception.

TRADEMARKIBM and DOS/V are the trademark or the registered trademark of International BusinessMachines Corporation.Macintosh and Power Book are the registered trademarks of Apple Computer Inc.

Windows is the trademark of Microsoft Corporation.EPSON is the trademark of SEIKO EPSON CORPORATION.

NOTICES1.This document should not be reproduced in whole or in part without the written permission

of SEIKO EPSON CORPORATION.2.Any of description in this document is the subject to change without notice in future.3.The information and specification in this document are the most up-to-date at the time of

publication. However, we are unable to guarantee the accuracy of printed material afterthe date of publication. In case of any mistake or lack of description, please kindly notifyus to correct.

4.Any influence by utilizing the document may be out of our responsibility regardless theitem 3 above.

1999 SEIKO EPSON CORPORATION

precautions : SAFETY,MAINTENANCE,PERSONchapter 1 : GENERAL (PART NAME, CONNECTION, SPECIFICATION, etc...)chapter 2 : THEORY OF OPERATION (HARDWARE CONFIGURATION, FUNCTION OF

UNITS, etc...)chapter 3 : DISASSEMBLE & ASSEMBLE (DISASSEMBLY PROCESS FOR MAIN UNIT)chapter 4 : TROUBLE SHOOTINGPARTS LIST, EXPLODED DIAGRAM


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0-2Revision:A SEIKO EPSON

Record of Revisions

Memo RandomFree area to memorize any important technical information here.

History Issued Date Alternation

REV. 0 1999. August. 20 for Training onlyREV. A 1999.September.8 Original Issued


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PRECAUTIONS

1. MAINTAIN THE SAFETY OF OPERATORS(1). PROTECTION FROM ELECTRIC SHOCK*Whenever doing any repair work on the product, be sure to turn off the power and remove theelectric power cable from the electrical outlet.* Whenever inevitably turning the power on to the product opening the case or cover (repairprocess) be sure to take off any metallic materials such as a watch, cuffs, rings, and tie pinswhich may touch the metallic part of the product and dangerous of electric shock.

(2). PROTECTION FROM ACCIDENTAL INJURYOBSTACLES* Be sure not to touch the lamp inner housing and its circumstances after the power is turnedoff, they may be heated up even after the cooling down process was ended. Also make surenot to touch the fan during the operation of repair as turning the power on.* Make sure to protect your hands by gloves from sharp edges during assembly and disas-sembly.* Do not look into the lens while the lights is on. Protect eyes from being damaged.

(3). PROTECTION FROM ACCIDENTS* Any operation should be done while the device placed on a flat and stable place to preventthe device or parts from being dropped. Be careful not to place tools and parts on the deviceor at your feet.* Whenever doing any repair work on the product, be sure to away from a place for foreignercome across in order to prevent the product from being used in incomplete condition or acci-dental near miss. Be sure not to leave the product during any repair work.* Be sure to use attached power cable when you supply the power to the product.

2. SAFETY MAINTENANCE(1). ELECTROSTATIC DISCHARGE* Whenever doing any repair work on the product, be sure to wear the wrist band and the elec-

trostatic mat with grounding. When replacing any electric components (Boards and Opticalengine), it is recommended to touch the electrostatic plastic bag of the component to themetallic part of the product once before take the component out from the plastic bag.

(2). LIMITATION OF PARTS* Use only authorized or supplied parts from EPSON for the replacement of mechanical partsincluding the lamp inner housing, air filter and so on.* Use only the power cable and the interface cables attached with the product.

(3). Others* Visually check the distortion or dirt at the connectors of the power cable. If dirty, clean off,and if distorted, replace the cable in order to avoid firing by the flush over phenomenon.* When plug the internal connector cables or the interface cables, be sure to fully plug into theconnectors until it stack to the connector edge.* When remove the FPC cable be sure to remove the connector lock in advance. Whenremove the cable on the CN1403/1502 of the Main board assembly unit or CN804~806(XGA)/801~803(SXGA) of the Driver Board Assy, the connector lock should be unlocked by pullingup the both end of connector lock simultaneously with tweezers.* Whenever doing removal of parts or repair work on the product, make sure that the work isdone in a clean room, free of dust and dirt in order to keep the optical element away from dirt.

3. OTHERS*The hardware of the RS-042UG is basically the same as that of the RS-042 except somecomponents. Consequently, this manual basically describes the hardware of the RS-042. Dif-

ferences between these two units are explained in this manual as comments.* Any questions on the EMP-9000/8000LCP maintenance including supply of the service parts


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or contents of the document would like to be contacted to the below address. Any technicalinformation about amendments is occasionally available as the service bulletin.

SEIKO EPSON CORPORATION4897 SHIMAUCHI, MATSUMOTO-SHI,

NAGANO-KEN 390-8640 JAPAN

ATTN: Visual Device Customer Support Group


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Chapter 1 Product general


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1.1. PRODUCT GENE RAL

EMP-9000/8000 MULTIMEDIA PROJECTOR designed as the new model of projector is

the brightly with new optical engine to project enhanced color images from the personal

computers CRT and any one of video equipment such as video tape deck, video cam-

corders or digital camera.

FEATURE OF EMP-9000/8000 Bright and clear Flexible projection image size

The big caliber zoom lens, an d t he n ew type of high br ightn ess lam p (class No.1) an d

th e optical block(220W uH ra high efficiency lamp ) enable t o achieve a wide pr ojection

ima ge from 30" to 300" (projection d ista nce : 1.1 to 15.6 m ).

EMP-9000 : 1700ANSI lm EMP-8000 : 2000ANSI lm High resolution full color (16770 thousands colors)

EMP-9000(SXGA): 3(R,G.and) of TN liguid crystal panels of 1.398.784 pixel supply

app roxima tly 4.2 million (1366x1024x3) dots.

EMP-8000(XGA): 3(R,G.and) of TN liguid crystal panels of 786.432 pixel supply

app roxima tly 2.3 million (1024x768x3) dots.

The signal to VGA~UXGA is able to be projected full screen with the adoption of Epsonoriginal image compression technology DAR (Digital Active Resizing).

Standard attachment of remote controllerThe projector can be controlled using a handheld remote control unit, with menus

being pr ovided for Image source switching an d Ima ge adjustm ent . The remote cont rol

can also be used as a wireless mouse to control mouse operations on the computer

screen du ring presentat ions. The EMP LINK V software t hat combines as a stan -

dar d accessory of pr oduct.

Connectivity with various computers

The advanced data signal determ ination fun ction Stan dard att achments of int erfacecables an d ada pter s ena bles EMP-9000/8000 to connect with var ious compu ters such

as IBM-compatible PCs and laptops, Macintosh. Almost all of the video signals areavailable for this.

Keystone collection by digital processing and optical lens shift.Cont ra ct a u pper /lower pa rt of image with smooth ing function. The p rojector for su p-

portin g of mis cellaneous comp ut er (DOS/V, Mac, PC98) out pu t. No mat ter wha t t ype

of out put is used, t he r esult is video ima ge of out sta ndin g clarity.

3D sound to (SRS) functionThe presentation effect becomes big,become it is able to adjust the extent (SRS

SPACE) an d dept h (SRS CEN TER) of soun d.

Simple MaintenanceThe ma inten an ce easy. Number of image adjust men t pr ocess is not r equired. Celing mount (option part)

Table 0-1The projector can be fixed to the celing.


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1.2. PART NAME

1.2.1. Outside View of Main Fr am e

Figure1-1 Front side view

Figure1-2 Operation panel

Remotecontrol

receiver

Foot adjust lever

Front foot

Lens cover

Operation Panel

Menu button

Esc button

Tracking button

Enter button

Keystone button

Video buton

HEMP button

Power button

Computer button

A/V Mute button

Resize button

Shift button

Sync button


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Figure1-3 Interface panel

Figure1-4 Rear side view

BNC

Monitor Out

Audio Out

Remote

S/Video

L-Audio-R

Computer1

L-Audio2-R

Audio1

Mouse/Com1/2

Video

Operation panel

Remote controlreceiver

Exhaust fan

Power inlet


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1.2.2. Inside view of main frame

Figure1-5

Projection panel

FUSE board

Power supply unit

Ballast unit

Lens shift mechanical unit

Main board assy unit

Filter unit

Safety switch

IF unit


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1.2.3. Outside View of Remote Controller

Figure1-6 Remote controller

(Front) (Back)

Inside of cover


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1.3. MAIN COMPORNEN T

Main board Assy unit

Figure1-7 MA board

AU board Assy

Figure1-8 AU Board Assembly

IF Unit

Figure1-9


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Power Supply Unit

Figure1-10

Ballast Unit

Figure1-11

Fiter Unit

Figure1-12


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Speaker L/R

Figure1-13

RC Receptor Board (Back/Front)

Figure1-14

Connector Board U Assembly Connector Board L Assembly

Figure1-15

Ballast Unit Lamp Case Unit

Upper caseConnector board U Connector board L

Speaker LSpeaker R


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Upper Case Unit Lamp Inner HousingLight source lamp:(Model number :EMPLP08)

Figure1-16

Front Case Lamp case unit

Figure1-17

Optical Engine(The unit that in one body of Driver board Assy, FUSE board assembly, Intakefan, Optical head unit and Light guide unit.)

Figure1-18

Safety switch (Optical engine is difference parts)Light guide unit

FUSE boardassembly

Driver board Assy ens shift mechanical unit (Optical engine is difference part)


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Figure1-19

Intake fan

Projection panel


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1.4. SP E CIFICATIONS

1.4.1. Main u nit specificat ions

Table 1-1OPTICAL FEATURES SPECIFICATIONS

Display method Transparency type poly-silicon TFT color liquid crystal dis-play (R/G/B three panels)

Optical method Dichroic mirror separation and prism combine methodProjection image size 30 inch ~ maximum 300 inch (Wide angle),

20 inch ~ 230 inch (Tele angle)Projection distance 1.1m~15.6mLiquid crystal screen /Drive system Poly-cilicon TFT (MLA built in) 1.3inch (Diagonal)

EMP-9000 :Full lines, 24phase block seriesEMP-8000 :Full lines, 12phase block series

Pixels EMP-9000 :1398784x3 (1366x1024x3)EMP-8000 :786432x3 (1024x768x3)

Focal Lens Manual Zoom lens F1.8-2.4 (49~69 mm)Focus adjustment Manual

Zooming adjustment Manual(1:Approx1.4)/E zom by remote control(1:Approx4)Keystone correction ratio 10(Upper) :0(Lower) ~ 5:5 optical axisLight SourceLife(Lamp inner housing)

discharge lampA.C. drive

UHE (Ultra High Efficiency Lamp) lamp 220WLife 2000 hours (Light 50% or the survival rate 50%)

Brightness EMP-9000 :1700lm(Catalog spec)EMP-8000 :2200lm(Catalog spec)

AUDIO FEATURES

Average brightness uniformity Typ.85%Output for internal speaker Dynamic speaker(3W-8) x 2 speaker 3D stereo sound:

50~18000Hz, S/N 85dbAudio out Interface External speaker 3.5mm Stereo mini-jack

Internal speaker output is stopped when mini-jack isplugged.Output signal:0 to 500mvrmsland imperdance:600

Audio interface (L/R) x2(S Video /Video )

Audio signal(stereo) from the video devices. Input interfaceis separated with R(Right) and L(Left).Interface type:RCA jackInput signal:500mvVrms / 47K

Audio 1 interface Computer 1 Audio input (stereo)Interface type:3.5mm Stereo mini-jackInput signal: 500mVrms/47K

Audio 2(L/R) interface

REMOTE CONTROL

Wireless remote controller For controlling EMP-9000/8000 operating mode and control-ling host computer from EMP-9000/8000.Signal is detected with internal receptor board.Control range: Within 10 m and 30 degree (Reft / Right), 15degree (upper /Lower) wide from receptor .

Remote interface For conect to optional remote control receiver (EMPST02)Interface type : 3.5mm Stereo mini-jack(The function of Receptor board is stopped when mini-jack isplugged)

VIDEO INPUT/OUTPUT

Computer 1 interface (input) Host computer RGB output(0.7Vp-p 75 / Mac 0.714Vp-p 75)


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1.4.2. Accessory specificat ion

Remote Control Design Stick type Dimension 165 x 48 x 35 mm Weight 70g (except battery) Number of Button 24 (operating button 22 + mouse button 2) Pointer Malti-polarized switch methode Battery Alkaline LR6 x2 Battery Life Over 3 months (1 hour use per day) Transmission Directivity Right / Left:20 Upper / Lower:20

Power cord 2.7m .

Computer cable

Mini D-Sub15pin type : 1.8m , HDsub-15pin type. 5 BNC type : 1.8m , Conversion from HDsub-15pin to BNC.

Conputer2 RGB/Component video inputinterface (R/R-Y, G/Y, B/B-Y, H/CStnc,VSync)

This terminal is work as RGB Video and compornent Videoinput terminal as well, I can switch on OSD menu. (Default:RGB)Input signa :Analog RGB Standard level (0.7Vp-p,75,Negative synchronous0.3V)Interface Typ :BNC Jack

Monitor OUT interface (output) EMP-9000/8000 RGB outputInterface type: HD-15pin(DDC1/2B correspondence)

S-Video Interface Input signal: Luminous 0.714Vp-p,Chrominous 0.28Vp-p.Interface type: Min-DIN 4pinS-Video is prior to composite video.

Video IN Interface(Composite video interface)

Input signal: 1.0Vp-p,sync.negative 75Interface type: RCA jack (yellow)TV signal type: NTSC carrier frequency :3.58MHz(4.43MHz)

PAL carrier frequency :4.43MHz(3.58MHz)SECAM carrier frequency :4.43MHzAuto identification(Default)

MOUSE/COM

Serial Mouse or RS-232C Mouse/Com1, Mouse/Com2Auto identification (Mouse or RS-232C)Interface type: DIN 13pin

POWER SUPPLY

Input Voltage AC100-120V /220-240V10% (50/60Hz)Power Consumption Approx. 360 W (Standby :6w)

Conform to energy star program.Dimensions 305 mm (W) x 157 mm (H)x 475 mm (D)

(Include lens and foot)Weight Approx. 8.3 kg

Mechanical Function

Foot Adjuster Quick-release and fine adjustment machanism.Tilt Angle 0~+12

Theft-proof Arranges holds to install Kensington Lock on lower case.Nut for celling For of muts are prepaired onthe Bottom case to fix a product

to celling.ENVIRONMENT

Operational/storage temperature +5C~+40C / -10C~ +60C (non condensing)Operational/storage humidity 20%~ 80% / 10%~ 90% (non condensing)Operational/storage Altitude 3048m / 6096m

Table 1-1


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Audio cable 1.8m , 3.5mm stereo mini type.

Video/Audio cable 1.8m , RCA plug type, 3cables.(yellow) 1cable

1.8m , RCA plug type, 3cables.(red,white) 2cableMacintosh adapter set

Macintosh desk top adapter with resolution selector :D-sub 15pin-HD type. Macintosh monitor adaptor :HD15pin-Dsub15pin.

EMP Communication cable set Main cable, DIN 13pin - Multi CN, x1 PS/2 Mouse cable, Mini DIN 8pin - Mini DIN 6pin, x1 Serial Mouse cable, Mini DIN 8pin - D-sub 9pin, x1 Mac Mouse cable, Mini DIN 8pin - Mini DIN 4pin, x1 USB Mouse cable, D-sub 9pin - D-sub 9pin, x1 Mac Serial cable, Mni DIN 8pin - Mini DIN 8pin, x1 Projector Software, CD-ROM.

Battery Simple 3 Alkaline LR6 x2.


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1.5. IN TERFACE SPE CIFICATION

Figure1-20

1.5.1. Compu ter 1 (The pictur e inpu t of ana logue RGB from Comput er)

HD D-SUB 15

1.5.2. Aud io 1 (The voice input from comput er)

3.5mm Stereo mini jack

Pin Terminal Pin Terminal

1 Red video 9(None) (Pin is not exist)2 Green video 10 Synchronous GND3 Blue video 11 Monitor (ID bit 0)4 Monitor (ID bit 2) 12 SDA5 GND 13 Horizontal synchronization6 Red video GND 14 Vertical synchronization7 Green video GND 15 SCL8 Blue video GND

5 1

10 6

15 11

654327891

1 pin: GND2 pin: Computer audio input L3 pin: Computer audio input RThe other pins: NC


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1.5.3. Aud io Ou t

3.5mm Stereo mini jack

1.5.4. Monit or Ou t

1.5.5. S-Video

S-terminal inputMini DIN 4-pin

Pin Signal Function Pin Signal Function

1 R Out Red video 9 Reserved2 G Out Green video 10 GND3 B Out Blue video 11 Reserved4 Reserved 12 Reserved5 GND 13 H sync Horizontal sync.6 GND 14 V sync Vertial sync.7 GND 15 V sync8 GND

1,6~9 pin: GND2 pin: Audio output L3 pin: Audio output R5 pin: Detection of Line-out jack insertionThe other pins: NC

15

610

1115

4

2

3

1

56

1,2,6 pin: GND3 pin: Y signal input4 pin: C signal input5 pin: Input detection terminal


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1.5.6. Video In / Audio L/R

RCA Gold plating (only insertion part), Light angle H=15mm, Color: yellow

1.5.7. Mouse / Com 1/2

Multi-mouse jack13-pin jack

Signal meanings are different according to the operation mode.

Pin PS/2Mousel

98Mouse

Mac.Mouse

SerialMouse

PC serial/Mac.serial

1 XA XA XA Reserved Reserved2 XB XB Reserved Reserved Reserved3 Reserved YA Reserved TXD Reserved4 Reserved YB Reserved READY Reserved5 LEFT LEFT Reserved GND Reserved6 Reserved RIGHT LEFT GND Reserved7 Reserved Reserved Reserved GND Reserved8 Reserved Reserved Reserved Reserved TXD9 Reserved Reserved Reserved Reserved RXD10 Reserved Reserved Reserved Reserved DTR11 Reserved Reserved Reserved Reserved DSR

12 PCV(+5V) PCV(+5V) PCV(+5V) Reserved Reserved13 GND GND GND GND GND

2

1

3

5

4

Video in

6

8

7

Audio R

Audio L

1 pin: GND2 pin: Video input3 pin: GND4 pin: Audio R return5 pin: Audio input L6 pin: GND7 pin: Audio L return8 pin: Audio input R

4

8

14

13

1

5

9


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1.5.8. Remote

3.5mm Stereo mini-jack

6543

27891

1,6 pin: GND2 pin: Repeater detection / Signal5 pin: LED lanp


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Chapter 2 Theory of operation


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2.1. Ha rdwar e Configula tion

The hardware of EMP-9000/8000 is distinguished in the optical system and the electrical sys-tem.The lower level beyond the breaking line in the Figure2-1 show the optical system, and theupper level shows the electrical system. (Dotted line inside is the optical system.)

Figure2-1 Hardware block diagram

CableAssembly,PC-IN

Ca

bleAssembly,PC-OUT

Pluggedwithconnector

CableAssembly,PC-SEL

CableAssembly,AU-IN

Speaker

PowerSupply

Unit

BallastUnit

FilterUnit

OperationPanel

Connector

Board LAssy

Connector

BoardUAssy

Thermistor,

RC ReceptorBoard

Assembly,(Front)

Intake Fan

Exhaust Fan

RC ReceptorBoard Assembly,

(Rear)

Thermistor, LAMP

ThermistorPB

UHE LAMP

Light GuideUnit

Adjust OpticalAxis

Focus/ ZoomComposite

R/G/B

FC BoardAssembly

!

"#

Main board Assembly Unit

IF Unit

PP K nob Mechanical Unit

$

!

$

!

!

!

$

CableAssembly,RCR

Coaxial

%

Cable Assembly, Lamp Fuse

FFC C onnector Cable (Mouse)

Coaxial

!

Driver Board AssemblyPrismLight valve Projection Lens Unit

%

*1 UHE lamp andFUSE board assemblyare combined as oneparts Lamp innerhousing.

!

&

'()*+

:

,

!

!

Optical System


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2.1.1. Process Out line

1. The video signal is provided to the main board Assy uniy from the IF unit. (Analog signalshould be once changed into digital signal by the Main board Assy uint.)

2. Video signal (digital) is once stored in the video memory (SRAM) on the Main board Assyunit, then the Driver board Assy generates signals to drive the light valves R/G/B.

3. The light valves R/G/B are individual panels each others. They work to shut or transmit thelights from the light guide unit.4. The lights transmitted through the light valves will be combined the prism and projected

through the projection lens unit.5. The audio signal is provided from AU board Assembly via Main board Assy unit from the IF

unit and be output to speaker R/L.

Circut process block

Figure2-2

Optical Process block

Figure2-3

Main board Assy unit

Digital

Analog

A/D

Display

Memory

Display controlAUboardAssembly

IF unit

signal

signal

Speaker R

Speaker L

Driver board Assembly

Display

LCDConverter

Driver

R

G

B

Light ValvesR/G/B

Correction

Display

Audio

Projection LensLight Valves R

Light Valves G

Light Valves B

Lamp innerHousing

(Light Source)

Balast Unit

Driver board Assy

Prism (R/G/B sinthesize)


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2.1.2. Elect rical Syst em

Electrical units of EMP-9000/8000 are physically connected mainly to the Main board Assyunit as shown figure 2-1. The function outline of each circuit system unit is shown below table.

2.1.3. Optical Syst em Connect ions (Opt ical Engine)

The optical systems consists of 5 blocks (Intake fan, Light guide unit, Optical head (Light valveR/G/B)/Prism unit, and Projection lens unit) as shown next page. These units and Driverboard Assy are specified as Optical engine and it is one replaceable part.In addition to the five items, FC board is attached at the rear of light guide unit. It relay theswitch signal on the lamp inner housing (FUSE board Assembly) to the Driver board Assy. 1. Itis therefore independent of the optical functions.

Unit name function outline

1. Main board Assy unit Power (DC voltage generation) ON/OFF, The ballast powersupply (for light source lamp) On/Off, Circuit reset, Air cool-ing fan control, The temperature detection (protect overheatcondition), Store the display data, The display control (resiz-ing etc.), Display data and timing signals generation, condi-tion lamp (LED indicator) display, Audio signal control,Remote controller /operation panel control, Mouse control,Relay the DC power supply hook up, BNC interface connec-tor,

2. Driver-board Assy(optical engine)

Display compensation data preservation, Read out the dis-play data, Digital to analog coversion (D/A), Light valve (liq-uid crystal panel) drive signal generation, Bias generation forthe light valve

3. IF unit Display data input/output, Interface connector, Audio input/ output interface connector, interface connector, Mouse/Cominterface connector.

4. AU board Assembly Audio control, Amplifier5. RC receptor board Assembly

(The front/the back)Infrared ray signal receiving of the remote controller, Serialdata transmission

6. Operation panel Switch (the matrix) signal generation7. Connector board L Assy Hook up of the exhaust fan power and the RC receptor board

assembly (the rear) signal8. Connector board U Assy Pin point of contact connector for the joint with the connector

board L Assy unit, Cable connector with the AU board

assembly.9. FC board assembly Signal relay to the FUSE board assembly10. FUSE board assembly Fuse on the lamp inner housing (Fuse for the new article

detection)


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Figure2-4 Optical block

Inside view of light guide unit

Figure2-5 Inside of light guide unit

Lamp inner housing Optical head / Prism unit

Figure2-6

FC board

Optical Head/Prism unit

Lamp inner Housinginstalling location

Projection LensUnit

Lens shift mechanical unit


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Projection lens unit Lens shift mechanical unit

Figure2-7

Caution:

Take care not to cause any shock or mechanical stress to the optical engine and also not to

disassemble it. Otherwise, the pixel divergence may occur.The alignment adjustment for each other is applied in the factory, and also electrical correctionis applied with Driver board Assy according to the each optical engine. Therefor do not sepa-rate or exchange the each unit to the others.

Caution:

Intake fan, Light guide unit ,Optical head /Prism unit, Projection lens unit and Driver boardAssy are handle as one parts named Optical engine.

Table 2-1Unit functionUNIT NAME FUNCTION & REMARKS

LAMP INNER HOUSING(Type :EMPLP08)

Include one Discharge Lamp (UHE 220W)as a light source.FUSE board is mounted for new lamp UNIT detection.

LIGHT GUIDE UNIT Disperse the light from the light source and uniform by the multi lens. (Ultraviolet rayalso eliminated by UV filter.)Disperse the light in three (R/G/B) factors, with CDM filter, condensor lens and mirror.

OPTICAL HEAD/

PRISM UNIT

Consist of three light valves, polarization plate and prism unit.

Each light valve controls shutter of pixels with 256 levels.Prism unit composes R/G/B optical signals and transfers to the projection lens unit.PROJECTIONLENS UNIT

Manual zooming and focus adjustment, the image is projected.

LENS SHIFT MECHANI-CAL UNIT

Rate up and down the projection lens unit (Adjust the keystone corection ration).


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2.2. Filter unit / Sa fety switch

The filter unit is the AC (alternating current) inlet and filter circuit Assy and also AC interlockwere incorporated. The safety switch is the thermal switch for the power supply cutoff of casethat became overheat condition.

Figure2-8

2.2.1. Filter un it circuit block

Figure2-9

AC interlock switch cut off the AC power when the lamp cover unit of the main frame back is

removed. The safety switch (the thermostat) is being established on the output of the interlockswitch and be attached in the lamp inner housing area (the lamp unit installation department).The safety switch shutdown the AC power supply when it becomes over heat condition.Fuse F101 : malfunction of Overcurrent condition with power supply unit or etc. it

blows the fuse.EMI filter circuit : Noise removal of the alternating current input.AC interlock : When remove the lamp cover unit the AC power soutput is shutdown.

(To secure the safety operation at the lamp housing replacement.)Safety switch(The N/C type)

: Overheat condition is presented around the lamp inner housing area,it shutdown the AC power.

AC Inlet

AC Interlock

Safety SwitchFilter Circuit

CN

101

CN

102

EMI

FilterCircuit

Filter Circuit AssyInlet unitAC

interlock Switch

Connect to Power Supply unit CN103

AC PowerSupply

(Connect ACpower cable)t

SafetySwitch250V-6.3A

F101


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2.3. Power Supply Unit

The power supply unit function is divided by 2, one is from the EMI filter circuit to the subpower supply (Primary) and another is the main power supply (Secondary). The sub powersupply is actuated always, nonexistent the relation to the power ON/OFF. The main powersupply department actuation is contorolled by the power supply control signal (PWON) that isoutput from the main board Assy unit.

Figure2-10

2.3.1. Power su pply un it circuit block

The Power supply unit includes the EMI filter circuit, safety circuit (the thermostat), coolingfan, sub power supply circuit and regulator circuit. (RC receptor board is not composed of thepower supply unit.)

Figure2-11

Power Supply Fan

DC Output/Input cable(connected to Main board

Assy unit)

Power Supply connectorfor Ballast

AC input Connector

EMI Filter

Primaryregulator

circuit

ThermostatInterlockSwitch

CN103AC INLET

AC input

Ballastoutput

DCoutput

CN2

03

Cooling fanPower Supply

Fan

CN201

Sub Power Supply Circuit(+3.3R)

Resident Power Supply

Main power Supply(DC regurator)

PW ON

FAN CL

Ballast PowerSupply


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(1). Outline of function AC input circuit department: Include AC input connector, thermostat and EMI filter circuit.

The AC voltage is supplied via the filter unit and safety switch, when the power cable isconnected.

Safety circuit department: Include the thermostat on the AC input circuit. The thermostatcut off the AC power when it becomes overheat condition.

Ballast power supply circuit department: It is the circuit that generates the power supply(DC240~390V) for the lamp inner housing according to the power ON/OFF control signalof the main board Assy unit. The output cable is connected to the ballast unit.

The primary regulator circuit: The DC voltage is generated by rectifying and stabilizing theAC power supply. This DC voltage are supplied to the sub power supply circuit and ballastpower supply circuit.

Regulate the DC voltage that is generated with primary regulator circuit with DC-DCswitching regulator then produce the various bios as shown in the next table. This DC-DCswitching circuit has feedback function with +7V output and reducing the fluctuation ofoutput. (Adjustment of individual output voltage is not possible.)

Cooling fan: The heat that occurred with the power supply unit is radiated. The fan bios

(+12V) is supplied from CN201 of the power supply unit. The sub power supply circuit (+3.3R): Always+3.3V be output irrespective of the ON/OFFof the power supply if the AC voltage is supplied. (It is used to the power ON control circuiton the main board Assy unit.)

The circuit power supply output is as next it showed it.

(2). Input / output specification

Output voltage +3.3R +12R +7 +18 -11 +13 Ballast outputOutput voltage precision % or V 0.2V V5% 6-7.5V 17-20V 10-13V 12-15V 240-390vdcRipple mVp-p 100 100 200 200 200 400 20000Ripple+Spike mVp-p 100 100 200 200 200 400 20000Output current Min A 0.2 0 0 0 0 0 0

Typ A 1.6 0.2 1.6 0.7 0.3 1.7 0.8(360V)Max A 2.5 0.3 2.5 1.2 0.5 2.5 1Peak A 10

Over voltage protection +4.6V 410Over current protection Exist Exist Exist Exist Exist Exist

Table 2-2 AC input (CN103 N/L)AC Input Rating Tolerance

Input voltage AC100~240V AC85~276Vfrequency 50 / 60Hz 48~62Hz

Table 2-3 Ballast output

Pin No. Signal name2 HGNT(-) Ballast out put (-)1 BAHV(+) Ballast out put (+)


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Figure2-12

Voltage/Signal arrange of DC output (CN202/203) connector department is shown below.

Figure2-13

DC output (CN202/203)

Pin No.Signal

nameDirection Remarks Pin No.

Signal

nameDirection Remarks

12 +3.3R Out Sub power supply 24 FANCL In Fan control11 +3.3R Out Sub power supply 23 PWON - Main power supply ON/OFF10 +3.3R Out Sub power supply 22 GND -9 +7 Out 21 GND -8 +7 Out 20 GND -7 +7 Out 19 GND -6 +12R Out Power down signal 18 GND -

5 +18 Out Fan control 17 GND -4 +18 Out 16 GND -3 -11 Out 22 GND -2 +13 Out 15 GND -1 +13 Out 14 GND -

13 GND -

Ballast OutputAC Input

BLKWHT

12 11 10 9 8 7 6 5 4 3 2 1

24 23 22 21 20 19 18 17 16 15 14 13

Red

Red


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2.4. Ballast un it

it is the unit that regulates again the DC power supply (DC240-390V/0.8A) for the ballast thatis supplied from the power supply unit to generates the AC power supply (AC45-200V) for theUHE lamp.

Figure2-14

Circuit Block

Figure2-15

(1). Process outline The sub power supply : The voltage for control circuit (+15V/+20V) inside the ballast unit

is generated. Switching circuit : Doing the switch actuation for the regulation again according to

the output signal (BACT) of the main board Assy unit. (TheBACT signal is doing the ON/OFF of the ballast output.) Doingthe modification (the adjustment of the output voltage) of theswitching duty according to the feedback signal from the detec-tion circuit.

Regulator circuit : The voltage for the lamp of AC45~200V is generated. Detection circuit : Monitoring the regulator circuit and genarates the feedback sig-

nal of the output voltage stabilization and detects of output cur-rent. When the lamp inner housing becomes consume, theLPST signal is transmitted to the main board Assy unit.

Regurator circuit

HVBallast output

LVAC45~200V

Detection circuit

Feedback

Sub power supply+15/+20V

Switching circuit

CP501 (connected to Mainboard Assy unit)

CP1 (connected to PowerSupply Unit)

DC input240~390v

BACT

LPSTC


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(2) Input/output specificationVoltage Rating power

Input 300~400VDC 260W (max)3W (At the time of the standby)

output AC45~200V 220W4%


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2.5. Main Boar d Assy Un it

The Main board Assy unit controls the center of the product. It consists of CPU, ROM, (FlashROM / EE-PROM) video memory, display controller, resizing, and circuits for operation panelcontrol, temperature sensor circuit, ballast power supply control receptor board interface con-trol and etc...The Main board Assy unit controls everything except to generate the display signal and audiooutput. The Main board Assy unit is available as a unit for the service parts.,

Outside View and connection of the Main board Assy unit for EMP-9000 are shown below.

Caution:

There are no compatibility with the Main board Assy unit for EMP-9000 and it for EMP-8000,though the outside view of each boards are similarly.

Figure2-16


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(1). Main board Assy unit circuit block

Figure2-17 Main board circuit block(EMP-9000/8000)


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(2). Function outline Projector control

The function that controls the driver board, video boards, audio boards, etc. Digitalization control of the input picture signal

The function that transforms the picture signal that is input from PC/Video digital from theanalogue.

Definition transformation control by the digital filter of the input picture signalThe function that transforms the picture signal that is input from PC/Video definition withthe digital filter.

Frequency transformation control of the input picture signalThe function that transforms the picture signal that is input from PC/Video into the LCDdrives picture signal frequency.

Y/C separation control of the video pictureThe function that separates a various composite video picture signal with digital Y/C.

On screen display functionThe function that displays the menu, EMP link function etc. overlay into the input picturesignal.

Remote controlThe function that receives the remote control signal and do decodes and control theperipheral circuit by the result.

Mouse controlThe function that transforms the pointer information in the remote control signal into eachmouse signals of PS/2, ADB, 98 buses, serial and transmit to PC.

Lamp controlThe function that controls ballast and do the illumination control of the lamp.

LED controlThe function that controls various kinds of Indicator of the operation, temperature, lamps.

Cooling controlThe function that measures temperature and control the turn of the fan by the temperaturecondition.

Power supply controlThe power supply control function corresponding to low consumption electric power-iza-tion.

PC serial interface functionThe function that does the projector control, download, upload from PC by ESC/VP, byhaving the interface with RS-232 C.

(Digitization department) 3D-Y/C separation department (Main device 3D Y/C Comb Filter :TC90A28F9)

It is the Y signals and C signal separation function by 3 dimension the composite signal of

the NTSC picture signal. Digital chroma decoder department (Main device Digital Video Decoder :SAA7114)The function that transforms the composite/YC analogue picture signal of NTSC/PAL/SECAM picture signal, into the digital brightness signal (Y, U, V) then do brightness andcontrast adjustment.

Analogue color difference-RGB transformation department(Main device Analog Video Decoder :TA1270)The function that transforms analogue Y/Cr/Cb picture signal, into the analogue RGB pic-ture signal.

Analog-to-digital conversion department (Main device Video ADC :AD9483)The function that converts the analogue RGB picture signal from PC, analogue Y/Cr/Cbpicture signal to the digital signal (RGB8:8:8).


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Synchronous signal separation department (Main device Sync Separator :CXA2016S)The function that separates the composite materials synchronous signal and sync ongreen synchronous signal inside the PC picture signal to H, V synchronous signal.

Picture signal level control unit (Main device Video AMP :LM2202M)The function that adjusts brightness, contrast of PC, analogue Y/Cr/Cb picture signal anddo the impedance matching to ADC.

Phase/frequency adjustment department (Main device PLL :ICS1523M)The function that adjusts the digitization phase between the H synchronous signal andintensity signal RGB from the PC and generates of the digitization base frequency, tomaterialize tracking and SYNC adjustment .

(Video overlay display department) (Main device Overlay processor :PW364)Analyze the PC digital video signals which consist from miscellaneous frequency by usingCPU and frame memory or etc.. then convert it to obtain the proper position, size and res-olution for LCD driver circuit. It also activate the overlay display with operation menu.For example) Miscellaneous video signals (NTSC, PAL, SECAM, VGA, SVGA, XGA,SXGA, UXGA etc.) are resized and sunchronous signals are converted to the LCD (1366

(H)1024 (V)) display signal.(Frequency transformation FIFO department )(Main device FIFO memory :IDT72215LB15TF)

The digital picture signal that was output from the video overlay display department istransformed into the back porch period and frequency that fit LCD driver specification.

(PC picture signal output department) (Main device Video Amp :HFA1405IB)The analogue RGB signal that was input from PC is amplified and output to the PC OUTterminal.

(Control unit ) (Main device Main CPU :MB91101PFV-G-BND-R Decode IC :EV9805AA)Do the projector control, remote control, mouse control, cooling control, lamp control, LED

control, PC serial interface control.

(3). Process Outline After the power on, the reset signal for I/O controller (IC1108) of the main board Assy unit

is released then start up circuit initialization in accordance with the program in the flashROM and become standby condition (Illumination (Projection) waiting of the lamp unit).

Computer In input signal (Digital) are converted into analog signal in video amplifier circuitat first, then converted to digital signal again with ADC.

Output signal from Monitor Out is provide from Computer 1 via video amplifier circuit. Storing the receiving data to the frame buffer of the resizing department, to display it resiz-

ing. The resized data is output to driver board Assy with the synchronous signal. The video input (S-Video/Video) signal is converted to the digital with the digital croma

processor and be stored to the frame buffer. I/O controller (IC1108) output four scan signal to the operation panel. When pushing any

switch scan signal run into return line via switch. I/O controller controls operation of eachfunction with return signal. (ex: When Power switch is on, I/O controller output BACTAsignal to Ballast power.

It supplies +5V to the RC receptor board assembly, in the case that the RC receptor boardassembly detects remote control signal the IR decoder (IC1507) receives the data ofserial form, and I/O controller controls the action of each part. (Even Repeater I/F signal(Serial form) that is supplied from the IF panel unit is similar. )


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The EEPROM and timer circuit provided the operating time control of the lamp inner hous-ing. Its operation is described below.

If the above condition is observed, it is necessary to replace the lamp inner housing. Afterthe lamp inner housing replacement, turn on the power and lamp on, the fuse for detectnew lamp involved in the lamp inner housing will melt and short out so that lamp timer willbe reset automatically.

Three of thermistors (LV / PBS / LAMP) detect the temperature of each area. The CPUwatches thermistor signal every 100ms, then controls the fan and lamp based on thesetemperature condition.

Five of temperature sensor circuits is equipped in order to prevent overheat on the main

board Assy. If the section is more than certain degrees, the circuit interrupt to the CPU,then indicate warning message on the temperature indicator, change the fan rotation, bal-last to light source and shut the power supply regulation etc..

Mouse / Com interface is multi interface (Mouse / RS-232C) used at link set operations. Itis used following (1-3) operations are given.1) When the remote controller use as the wireless remote controller of the computer con-nected.2) When option remote control receiver to the Remote interface, and use as the wirelessremote controller of the computer connected.3) When link set (DOS/V, Mac, 98) are used to adjust display and draw fixed form figure orline etc..

The Main Cable of link set accessary is connected to Mouse / Com interface.EMP-9000/8000 side of main cable is jack connector(13 pin), another side (the side con-nected to the computer) is equipped three correctors.These three connector are equipped in order to cope with type of each computer (Dos/V,MAC, 98) and type of each mouse (Serial, PS/2).

Table 2-4 Lamp inner housing timer controlLamp inner housing Lamp indicator state

when the operating time of the light source lamp

exceeds 1900 hours.

The projection screen continues to flash the mes-

sage(Exchange Lamp) in red for 30 seconds after it isturned or and the lamp indicator blink in orange.When the lamp inner housing run out before its life. The lamp indicator blink in red.


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EMP-9000/8000


Mouse / Com

Figure2-18

Figure2-19

13pin

13pinJ1

J1

DOS/V,PC98

Serial mouse cable

It is necessary for link set function

PC serial cable Serial port(RS-232C)

Mouse port(for PC mouse)

PC(98/PS2)mouse cable

J3

J3

J2

J2

J4

J4

Main cable

Main cable

(EMP-9000/8000)

(EMP-9000/8000)

Macintosh

MAC serial cable

Printer ormodem port

ADB portIt is necessary for link set function

Select one of them accordingto the mouse type

Both serialinterface hassame function

COM port(RS-232C)(for serial mouse)

MAC mouse cable

(male)5

9 1

J1 13

4128

PINOUT CONFIGURATIONJ1 J2 J3 J412 11 22 33 44 55 67 76 8 4

13 9 5 69 2 58 3 3

10 4 111 6 2SHELL OVERALL SHELL

3 1

3 1

1

5

6

6

6

5

2

2

7

9

9

8

female J3J2

J4


45/103

2-19

EMP-9000/8000


2.6. Driver Board Assy

The Driver board Assy has two functions, one is for converting the R/G/B display signal fromthe Main board Assy unit into analog signals (12 states(EMP-8000) or 24 states(EMP-9000))(light valve driver signals) and another is for controlling the display image by electrical correc-tion data.The Driver board Assy is a parts of a optical engine, and it is not the object of service parts.

Outside View of the Driver board Assy are shown below.

Caution:

There are no compatibility with the Driver board Assy for EMP-9000 and it for EMP-8000,though the outside view of each boards are similarly.

Figure2-20 Driver board Assy

Driver Board


46/103

EMP-9000/8000


Circuit block diagram of Driver board Assy

Figure2-21

Regulator

Regulator

Regulator

Regulator

Regulator

Regulator

Regulator

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Documents

EMP-8000 _9000 Service Manual