Epson EMP-7300 SERVICE Manual

EPSON EMP-7300	EPSON®
Service Manual	Revision: 3 Jun 1998

	Front Cover	Chapter 1
	Introduction	Product Description
	Precautions	Chapter 2
		Theory of Operation
	Index Pages	Chapter 3
	Specifications Section	Disassembly & Assembly
	Back Cover	Appendix

Notes:-

∙Detailed circuit board component diagrams may be found in the Appendix section of this manual.

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ãEpson (UK) Ltd. 1998

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EPSON DATA PROJECTOR

XGA Data Projector

SERVICE MANUAL

EMP-7300

EPSON

INTRODUCTION

This Service Manual describes of the hardware information which is necessary for the smooth field service of the XGA DATA PROJECTOR EMP-7300 and the trouble shooting.

As the primary technologies will be supplied with the service bulletin, you may update this manual.

HOW TO USE THE SERVICE MANUAL

Since the service manual describes the topics, which may be required in the field maintenance, 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 safety precautions and observe safety rules.

Precautions : SAFETY, MAINTENANCE, and PERSON

Chapter 1: GENERAL (PART NAME, SYSTEM FUNCTION, SPECIFICATION, etc.) Chapter 2: THEORY OF OPERATION (HARDWARE, INTERNAL CONNECTION,

and FUNCTION OF UNITS, etc.)

Chapter 3: DISASSEMBLE & ASSEMBLE (ASSEMBLY PROCESS FOR MAIN FRAME)

Chapter 4: TROUBLE SHOOTING

Appendix: PARTS LIST, EXPLODED DIAGRAM, CIRCUIT DIAGRAM, HARDWARE COMPARISON TABLE, etc.

VCCI RADIO FREQUENCY INTERFERENCE SELF RESTRICTION

This product is the type 1 information equipment and uses radio frequency energy and fully complies with the limits for the specifications in the computer information equipment radio interference regulation (VCCI rules). If not installed and used properly manufacturer's instructions, may cause interference to radio and television reception.

TRADEMARK

IBM and DOS/V are the trademark or the registered trademark of International Business Machines 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.

NOTICES

1.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 after the date of publication. In case of any mistake or lack of description, please kindly notify us to correct.

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

©1998 SEIKO EPSON CORPORATION

Record of Revisions

History	Issued Date	Alternation
REVA	1998,February.13	Preliminary Issued

Memo Random

Free area to memorize any important technical information here.

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 switch and remove the electric power cable from the electrical outlet.

*Whenever inevitably turning the power on to the product opening the case or cover (repair process) be sure to take off any metallic materials such as a watch, cuffs, rings, and tie pins which may touch the metallic part of the product and dangerous of electric shock.

(2) PROTECTION FROM ACCIDENTAL INJURY

*Be sure not to touch the lamp inner housing and its circumstances after the power is turned off, they may be heated up even after the cooling down process was ended. Also make sure not to touch the light source and its circumstances during the operation of repair as turning the power on.

*Make sure to protect your hands by gloves from sharp edges during assembly and disassembly.

*Do not look into the light source or lens while the light 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 prevent the device or parts from being dropped. Be careful not to place tools and parts on the device or at your feet.

*Whenever doing any repair work on the product, be sure to away from a place for foreigner come across in order to prevent the product from being used in incomplete condition or accidental 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 wristband and the electrostatic mat with grounding. When replacing any electric components (Boards and Optical engine), it is recommended to touch the electrostatic plastic bag of the component to the metallic 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 parts including the lamp inner housing, fuse, air filter and so on.

* Use only the power cable and the interface cables attached with the product.

(3) Others

*Visually checks 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 the connectors until it stack to the connector edge.

*When remove the FPC cable of the light valve are sure to remove the connector lock in advance. The connector lock should be unlocked by pulling up 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 is done in a clean room, free of dust and dirt in order to keep the optical element away from dirt.

3. REQUIREMENT FOR THE MAINTENANCE PERSON

Authorized person should have the following knowledge and skill for the maintenance of EMP-7300.

*Need to be trained by EPSON authorized maintenance training program and to be authorized as a service engineer.

*Need to sufficiently understand the operation and the descriptions of this service manual.

*Need to have the basic knowledge of electricity (safety operation, circuit diagram, electrostatic, and else...)

4. OTHERS

* Any questions on the RS-361/RS-376 maintenance including supply of the service parts or contents of the document would like to be contacted to the below address. Any technical information about amendments is occasionally available as the service bulletin.

SEIKO EPSON CORPORATION 4897 OH-AZA SHIMAUCHI,

MATSUMOTO-SHI, NAGANO-KEN 390 JAPAN TEL: [phone]

FAX: [phone]

ATTN: Visual Device Customer Support Group

Contents

Chapter 1

Product general

1.1 PRODUCT GENERAL ................................................................................	1-1
1.2 PART NAME...............................................................................................	1-2
1.2.1 Outside View of Main Frame .............................................................	1-2
1.2.2 Inside View of Main Frame................................................................	1-3
1.2.3 Outside View of Remote Controller ...................................................	1-7
1.3 CONNECTION............................................................................................	1-8
1.3.1 Connecting to a PC ...........................................................................	1-8
1.3.2 Connecting to a Macintosh................................................................	1-9
1.3.3 Connecting to a Video source .........................................................	1-10
1.3.4 Connecting to an Audio source .......................................................	1-10
1.4 MAIN COMPORNENT ..............................................................................	1-11
1.5 SPECIFICATIONS ....................................................................................	1-15
1.6 INTERFACE SPECIFICATION .................................................................	1-17
1.6.1 Computer 1/2 ..................................................................................	1-17
1.6.2 Audio 1/2.........................................................................................	1-18
1.6.3 Audio Out ........................................................................................	1-18
1.6.4 S-Video ...........................................................................................	1-18
1.6.5 Video...............................................................................................	1-19
1.6.6 Audio L/R ........................................................................................	1-19
1.6.7 Mouse / Com 1/2.............................................................................	1-19
1.6.8 Receptor .........................................................................................	1-20
1.6.9 RGB Video Input (EHQ option I/F)...................................................	1-20

Chapter 2

Theory of operation

2.1 HARDWARE...............................................................................................	2-1
2.1.1 Electrical System Connections ..........................................................	2-2
2.1.2 Optical System Connections (Optical Engine) ...................................	2-3
2.2 POWER SUPPLY UNIT ..............................................................................	2-5
2.3 CD10MA BOARD .......................................................................................	2-8
2.4 CD10DR BOARD......................................................................................	2-11
2.5 SWITCH PANEL.......................................................................................	2-14
2.6 CD10AU BOARD......................................................................................	2-15
2.7 CD10MJ BOARD ......................................................................................	2-17
2.8 CD10AJ BOARD.......................................................................................	2-19
2.9 CD10VJ BOARD.......................................................................................	2-20
2.10 CD10PJ BOARD.....................................................................................	2-21
2.11 CD10RC BOARD (RECEPTOR BOARD) ...............................................	2-22
2.12 SPEAKER UNIT......................................................................................	2-24
2.13 LIGHT GUIDE UNIT................................................................................	2-25
2.14 LAMP INNER HOUSING ........................................................................	2-27
2.15 SENSOR / SWITCH................................................................................	2-30

2.15.1 Interlock Switch .............................................................................	2-31
2.15.2 Safety Switch ................................................................................	2-32
2.15.3 Lamp House Thermistor................................................................	2-33
2.15.4 LV Thermistor ...............................................................................	2-34
2.15.5 Front Temperature Thermistor ......................................................	2-35

Chapter 3

Disassembly and assembly

3.1 DISASSEMBLY AND ASSEMBLY PROCEDURES ....................................	3-1
3.2 DISASSEMBLING THE MAIN UNIT............................................................	3-5
3.2.1 Removing the Lamp Inner Housing ...................................................	3-6
3.2.2 Removing the Air Filter Frame Unit ...................................................	3-7
3.2.3 Removing the Upper Case Unit And Handle .....................................	3-8
3.2.4 Removing the Switch Panel ............................................................	3-10
3.2.5 Removing the Speaker Units Right / Left.........................................	3-11
3.2.6 Removing the CD10AU Board.........................................................	3-12
3.2.7 Removing the Receptor Board Assembly (FI Board / RI Board) ......	3-13
3.2.8 Removing the CD10MA Board ........................................................	3-14
3.2.9 Removing the Rear Case Unit Assembly ........................................	3-16
3.2.10 Removing the CD10AJ/CD10MJ/CD10PJ/CD10VJ Board ............	3-17
3.2.11. Removing the Lamp Thermistor ...................................................	3-19
3.2.12. Removing the Prism Duct / LV Thermistor....................................	3-20
3.2.13. Removing the Safety Switch.........................................................	3-21
3.2.14. Removing the Optical Engine .......................................................	3-22
3.2.15. Removing the Power Supply Unit / PBS Thermistor .....................	3-23
3.2.16. Removing the Foot Adjuster A/B ..................................................	3-25
3.2.17. Removing the CD10DR Board Assembly .....................................	3-26
3.2.18. Removing the FC Board...............................................................	3-27
3.2.19. Removing the Projection Lens Unit (PLU) ....................................	3-28
3.2.20. Removing the Cooling Fan / Optical Head Unit / Light Guide
Unit/Exhaust fan.......................................................................................	3-29

Chapter 4

Troubleshooting

4.1. Before Starting Troubleshooting Procedures..............................................	4-1
4.1.1. Tools and Accessories Required for Troubleshooting ......................	4-1
4.1.2. Field Replacement Parts ..................................................................	4-1
4.2. Entry ..........................................................................................................	4-2

Appendix

Parts table

Circuit diagram

Exploded diagram

Hardware comparison table

Chapter 1

Product general

1.1 PRODUCT GENERAL

EMP-7300 XGA DATA PROJECTOR designed as the full compatible XGA projector is the maximum luminance device be used the new UHE lamp and the micro lens array with XGA resolution to project enhanced color images from the two personal computers CRT and any one of video equipment such as video tape deck, video camcorders or digital camera.

FEATURE OF EMP-7300

* Portable light weight, compact size

The new type of power unit and circuit board and the simple structure enables to minimize the body in A4 file size with the weight of 6.7kg. An optional carrying case will be useful in transporting.

* Bright and clear image

The micro lens array, the new type of UHE-120W lamp (950lm.ANSI) and the optical block enable to achieve a wide projection image from 30" to 300" (projection distance : 1.2 to 12 m). An optional high brightness screen will supply the high brightness even in the light ambient.

* High resolution full color (16770 thousands colors)

3 (R, G, and B) of TN liquid crystal panels of 786,432 pixel will supply XGA resolution of 1024 x768 dots.

* Standard attachment of remote controller

The projector can be controlled using a handheld remote control unit, with menus being provided for Image source switching and Image adjustment. The remote control can also be used as a wireless mouse to control mouse operations on the computer screen during presentations. The ELP LINK IITM software that comes with the projector provides a number of add-on features that are designed to make presentations more effective.

* Connectivity with various computers

The advanced data signal determination function enables EMP-7300 to connect with various computers such as IBM-compatible PCs and laptops, Macintosh. It also determines video signal of NTSC, PAL or SECAM in composite video, S-Video format.

* Advanced Image Real-time Resizer

The projector also features a new patented AIrRTM (Advanced Image Real-time Resizer) chip for supporting of miscellaneous computer output, as well as full XGA output. No matter what type of output is used, the result is full-size video image of outstanding clarity.

* Simple Maintenance

The maintenance easy. Number of image adjustment process is not required.

* Theft - proof

Kensington lock is available with hole on the lower case.

REV.A

1-1

1.2 PART NAME

1.2.1 Outside View of Main Frame

Speaker	Temperature indicator
	Lamp indicator
	Remote controller
	signal receptor
	Theft-proof
	Zoom ring
Handle	Focus ring
Foot lever
	Front foot
	Operator panel

Operator panel

Resize button	Operation indicator
		Power button
Source button		Blank button
		Tracking button
Menu button
		Enter button
Sync button
	Menu button	Volume button

Figure1- 1

REV.A

1-2

Lamp cover

Front foot

Rear foot

Air filter cover

Figure1- 2 Bottom side view

1.2.2 Inside View of Main Frame

Main board

Power supply unit

Figure1- 3 Inside view of main frame

REV.A

1-3

Driver board

Light guide unit

Figure1- 4 side view

LV Thermister

Prism duct

Driver board

Exhaust fan

Inlet unit

Figure1- 5 Under the main board view

REV.A

1-4

CD10AJ board

CD10MJ board

CD10RJ board

CD10VJ board

Figure1- 6 Inside of rear case unit

Foot adjuster A

Lamp Thermister Lamp power cable Safety switch

Light guide unit

Figure1- 7 Under the driver board view

REV.A

1-5

Filter board

Air filter frame

Filter cover switch

CN board

Inlet unit

Figure1- 8 Lower case view (Under the light guide block)

REV.A

1-6

1.2.3 Outside View of Remote Controller

Remote controller

Source button	Menu button
Effect button
Pointer button	Effect button
	Right click button
Blank button
	Custom button
Resize button	Mute button
Freeze button
Power button	Volume button
Front view	Rear view
	Left click button
Remote infrared Ray
	Battery cover

Figure111 Remote controller

REV.A

1-7

1.3 CONNECTION

1.3.1 Connecting to a PC

Computer 1

Computer cable (Attached Accessory )

Figure113

REV.A

1-8

1.3.2 Connecting to a Macintosh

Computer 1

Mac. Desk top adapter (Attached accessory)

Computer cable (Standard accessory)

Figure114

* Attached accessories

• ¦Dip switch settings are required according to the machine type.

Refer to the following table for detail. (Default setting is MAC13 mode.)

Table1- 1 MAC Adapter Dip Switch settings

	Switch A	Mode	Switch A	switch B
			“ON”	“ON”
	Switch B	VGA 640x480	3,4,5	8
		13” 640x480	1,2,5	8
		16” 832x624	2,4,5	8
	MAC Adapter	19” 1024x768	2,3,5	8
		21” 1152x870	1,2,3,4,5	8
		13” Multi Res.	1,2,5	8
		14” Multi Res.	1,2,5	3,4,8
		17” Multi Res.	1,2,5	3,8/4,8
		21” Multi Res.	1,2,5	3,8

Figure115 Monitor adapter

REV.A

1-9

1.3.3 Connecting to a Video source

Video

Audio L

Audio R

A/V cable (Attached accessory)

Figure117 Connection for video source

1.3.4 Connecting to an Audio source

Audio out

External audio devices

Audio cable (Consumable)

Figure118 Connection for audio source

REV.A

1-10

1.4 MAIN COMPORNENT

CD10MA board

Figure120 CD10MA board

CD10DR board

Figure122 CD10DR board

CD10AU board

Figure123 CD10AU board

REV.A

1-11

CD10MJ board

Figure126 CD10MJ board

CD10AJ board

Figure127 CD10AJ board

CD10PJ board

Figure128 CD10PJ board

CD10VJ board

Figure129 CD10VJ board

REV.A

1-12

Power supply unit

Figure130 Switch panel

Switch panel

Figure131 Switch panel

(15) Optical engine

Figure132 Optical engine

REV.A

1-13

Receptor board

Receptor board

Receptor board

Figure133 Receptor board

REV.A

1-14

1.5 SPECIFICATIONS

Table1- 2 specifications

OPTICAL FEATURES

Display method	Poly-silicon TFT (MLA built) color liquid crystal display
	(R/G/B three panels)
	Full lines, twelve phase block series
Optical method	Dichroic mirror separation and prism combine method
Projection image size	Minimum 30 inch to maximum 300 inch
Projection distance	1.2 m to 12 m
Resolution	1024 x768 dots, 2,359,296 pixels (786,432 x 3)
Projection Lens	Zoom lens F2.0 - 2.3 (55-72 mm)
Focus adjustment	Manual
Zooming adjustment	Manual(1:1.3)
Light Source	120 W (AC drive)
Life(Lamp inner housing)	UHE lamp,(type ELPLP05)
	2000 hours at 50% brightness
Average iluminance	Typical:950Lm(ANSI), Average:85% of typical
AUDIO FEATURES
Output for internal speaker	Dynamic speaker(3W-8Ω) x 2 (stereo)
Audio out Interface	External speaker 3.5mm Stereo mini-jack
	Internal speaker output is stopped when mini-jack is
	plugged.
	Output signal:0 to 500mVrms
	load imperdance:600Ω
Audio L/R interface	Audio signal(stereo) from the video devices. Input interface
(For Video device )	is separated with R(Right) and L(Left).
	Interface type:RCA jack
	Input signal:500mVrms
Audio 1 interface	Host computer 1 Audio input (stereo)
(For Computer 1)	Interface type:3.5mm Stereo mini-jack
	Input signal: 500mVrms/47KΩ
Audio 2 interface	Host computer 2 Audio input (stereo)
(For Computer 2)	Interface type:3.5mm Stereo mini-jack
	Input signal: 500mVrms/47KΩ
REMOTE CONTROL
Wireless remote controller	For controlling EMP-7300 operating mode and controlling
	host computer from EMP-7300.
	Signal is detected with internal receptor board.
	Control range: Within 10 m and 30 degree wide (right/left),
	15 degree wide (upper/lower) from receptor of LCP.
VIDEO INPUT/OUTPUT

Computer 1 interface Computer 2 interface S-Video Interface

Host computer RGB output

Interface type: HD-15pin(DDC1/2B compatible)

Input signal: Luminous 0.714Vp-p,Chrominous 0.284Vp-p. Interface type: Min-DIN 4pin

S-Video is prior to composite video.

Video Interface

(Composite video interface)

Input signal: 0.7Vp-p, 75Ω sync: negative 0.3Vp-p Interface type: RCA jack

TV signal type: NTSC 3.58MHz AL 4.43MHz SECAM 4.43MHz

Auto identification(Default)

REV.A

1-15

MOUSE/COM 1/2	Auto identification (Mouse or RS-232C)
Serial Mouse or RS-232C	Interface type: DIN 13pin
COMPONENT VIDEO INPUT

(For EHQ option interface)

This interface is as RGB video terminal as well,then distinguish signal classification automatically.

Input signal: 0.7Vp-p, 75Ω input sync: negative 0.3Vp-p

the Interface type: BNC jack

Y :Commonjack as Video In G R-Y:Commonjack as Video In B B-Y:Commonjack as Video In R

POWER SUPPLY

Input Voltage	AC100-120V /200-240V ±10% (50/60Hz)
Power Consumption	Approx. 260 W (Standby mode:30W)
Dimensions	300 mm (W) x 120 mm (H) x 363 mm (D)
	300 mm (W) x 129 mm (H) x 400 mm (D)
	include foot adjuster and lens.
Weight	Approx. 6.7 kg
ENVIRONMENT
Operational temperature	+5 to +40 degrees centigrrate
Storage temperature	-10 to +60 degrees centigrrate (non condensing)
Operational humidity/ Storage humidity	20% to 80% / 10% to 90% (non condensing)
Operational/storage Altitude	3048m / 6096m

REV.A

1-16

1.6 INTERFACE SPECIFICATION

Figure135

1.6.1 Computer 1/2

Computer video input D-SUB 15 (HD)

5	1
10	6
15	11
Pin	Terminal	Pin	Terminal
1	Red video	9	+5V
2	Green video	10	Synchronous GND
3	Blue video	11	Monitor (ID bit 0)
4	Monitor (ID bit 2)	12	SDA
5	GND	13	Horizontal synchronization
6	Red video GND	14	Vertical synchronization
7	Green video GND	15	SCL
8	Blue video GND

REV.A

1-17

1.6.2 Audio 1/2

Stereo mini jack with 2 circuits for detection pin

(The detection pin which is not required for audio input, is equipped for audio out terminal.)

•	H
•	H
•	H
•	H
•	H
•	H
•	H
•	H
•	H

1 pin: GND

2 pin: Computer audio input L

3 pin: Computer audio input R The other pins: NC

1.6.3 Audio Out

Stereo mini jack with 2 circuits for detection pin

•	H
•	H
•	H
•	H
•	H
•	H
•	H
•	H
•	H

1,4 pin: GND

2 pin: Audio output L 3 pin: Audio output R 5 pin: Detection of Line-out jack insertion

The other pins: NC

1.6.4 S-Video

Mini DIN 4-pin with a detection pin

		1,2,6 pin: GND
4	3	3 pin: Y signal input
		4 pin: C signal input
		5 pin: Input detection terminal
2	1
6		5

REV.A

1-18

1.6.5 Video

RCA Gold plating (only insertion part),			Light angle H=15mm
Color: yellow
			2		1 pin: GND
					2 pin: Video input
				1
1.6.6 Audio L/R
RCA Gold plating(only insertion part),			Light angle H=15mm
Color: L white R red

3,6PIN	3,6 pin: GND
	4 pin: Audio R return	5 pin: Audio input L
	7 pin: Audio L return	8 pin: Audio input R
4,7PIN
5,8PIN

1.6.7 Mouse / Com 1/2

Multi-mouse jack 13-pin jack

Signal meanings are different according to the operation mode.

4 1

8

5

12 9

13

REV.A

1-19

Pin	PS/2	98	Mac.	Serial	PC serial/
	Mousel	Mouse	Mouse	Mouse	Mac.serial
1	XA	XA	XA	Reserved	Reserved
2	XB	XB	Reserved	Reserved	Reserved
3	Reserved	YA	Reserved	TXD	Reserved
4	Reserved	YB	Reserved	READY	Reserved
5	LEFT	LEFT	Reserved	GND	Reserved
6	Reserved	RIGHT	LEFT	GND	Reserved
7	Reserved	Reserved	Reserved	GND	Reserved
8	Reserved	Reserved	Reserved	Reserved	TXD
9	Reserved	Reserved	Reserved	Reserved	RXD
10	Reserved	Reserved	Reserved	Reserved	DTR
11	Reserved	Reserved	Reserved	Reserved	DSR
12	PCV(+5V)	PCV(+5V)	PCV(+5V)	Reserved	Reserved
13	GND	GND	GND	GND	GND

1.6.8 Receptor

2

1

PIN: GND

PIN1: GND PIN2: Serial Data

1.6.9 RGB Video Input (EHQ option I/F)

REV.A

1-20

Chapter 2

Theory of operation