EMP820ASME_c.pdf

Multi Media Projector

Service Manual

EMP-600(SVGA)

EMP-800(XGA)

EMP-810(XGA)

EMP-811(XGA)

EMP-820(XGA)

EMP-600,EMP-800,EMP-810,EMP-811,EMP-820

INTRODUCTION

This Service Manual describes of the hardware information which is necessary for the smooth

field service of the Multi Media PROJECTOR EMP-600/EMP-800/EMP-810/EMP-811/EMP-

820 and the trouble shooting.

As the primary technologies modification will be supplied with the Technical Information bulle-

tins, 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 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 safety

precautions and observe safety rules.

precautions : SAFETY,MAINTENANCE,PERSON

chapter 1 : GENERAL (PART NAME, SYSTEM FUNCTION, SPECIFICATION, etc...)

chapter 2 : THEORY OF OPERATION (HARDWARE,INTERNAL CONNECTION, FUNC-

TION OF UNITS, etc...)

chapter 3 : TROUBLE SHOOTING

chapter 4 : DISASSEMBLE & ASSEMBLE (ASSEMBLY PROCESS FOR MAIN FRAME)

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 instruc-

tions, may cause interference to radio and television reception.

TRADEMARK

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.

2002 SEIKO EPSON CORPORATION

SEIKO EPSON

0-2

Revision:C

EMP-600,EMP-800,EMP-810,EMP-811,EMP-820

Manual Revision History

History

Date

Detail of change

REV. A

June 21, 2001

Initial draft

REV. B

Aug. 10, 2001

Addition of EMP-600, MA board screw tightening abol-

ished in 4-10

Descriptions deleted from 2-8

REV. C

April.08.2002

Addition of EMP-811 and EMP-820.

Service memo

Make a note here of important technical information from Technical Information bulletins.

SEIKO EPSON

0-3

Revision:C

EMP-600,EMP-800,EMP-810,EMP-811,EMP-820

SAFETY INSTRUCTIONS

1. MAINTAINING OPERATOR SAFETY

(1). PREVENTING ELECTRIC SHOCKS

• Turn off the power switch and disconnect the power cord from the AC outlet before carry-

ing out any disassembly and assembly work on this projector.

• If power needs to be supplied to the projector while the cover is removed (such as when

making adjustments), take off any metallic objects such as wristwatches, shirt cuff but-

tons, rings and tie pins which may pose the danger of coming into contact with the projec-

tor.

(2). PREVENTING INJURY

• Projector components such as the lamp inner housing and the area around it may still

remain hot after the power has been turned off, even when the cool-down period is com-

pete. Furthermore, if removing the cover in order to carry out adjustments while power is

being supplied to the projector, be careful not to touch the fans (intake and exhaust).

• Always wear gloves when disassembling and reassembling the scanner in order to avoid

injury from metallic parts with sharp edges.

• Do not look directly into the projector's lens while power is being supplied to the projector,

otherwise injury to the eyes may occur.

(3). PREVENTING ACCIDENTS

• Place the projector on a stable, level surface when carrying out any repair or adjustment

work, to prevent the projector and its components from slipping and falling down. Further-

more, do not place any tools or projector components on top of or underneath the projec-

tor.

• Avoid working on the projector in places where other people might receive injuries from

touching the projector while it is in a state of disassembly. Furthermore, do not leave the

projector unattended in the workplace at such times.

• When turning on the projector's power, always use the accessory power cord to connect

the projector to the power supply, and always make sure that the power supply is properly

grounded.

2. MAINTAINING THE PROJECTOR IN GOOD CONDITION

(1). PREVENTING STATIC ELECTRICAL DAMAGE

• When disassembling and assembling the projector, always use a grounding strap and a

grounding mat. Furthermore, when replacing electrical circuit components (such as circuit

boards and optical engine), touch the static-proof bag containing the new parts against a

metallic section of the projector before removing the component from the static-proof bag.

(2). USE OF GENUINE PARTS

• When replacing the structural components inside the projector (including the lamp inner

housing), use only replacement parts supplied by EPSON and listed in the projector's

Parts List.

• Use the accessory power cord and interface cable provided with the projector.

(3). SAFETY TESTING

• The following tests should be carried out on repair parts used in the LCP.

(3-1).Test items

• Insulation resistance test

• Ground continuity check

• Illumination check

SEIKO EPSON

0-4

Revision:C

EMP-600,EMP-800,EMP-810,EMP-811,EMP-820

(3-2).Testing procedure

Carry out testing in the order given below.

Repair

Insulation resistance test Ground continuity check

Illumination check

End

Safety inspections

(3-3).Testing methods

1). Insulation resistance test

Testing apparatus: Insulation ohmmeter (Rating: 500 V/100 M

Ω

)

Check item

Inspection method

Standard/Judgment level

<Insulation resistance check> Insulation ohmmeter

Insulation resistance

should be 10 M

Ω

or more

Insulation ohmmeter settings

Line terminal

1. Set the range selection switch to 500 V.

2. Connect the black lead wire to the ground terminal.

3. Connect the red lead wire to the line terminal.

4. Connect the black lead wire (crocodile clip) to c in order

to measure the insulation resistance (1) (between a and

c) in the diagram below.

5. Next, insert the probe of the red lead wire into a.

6. Set the measure switch to LOCK, and then measure the

insulation resistance after 1 minute.

7. Check that the insulation resistance after 1 minute is 10

M Ω or more.

8. Next, measure the insulation resistance at (2) (between

b and c) in the diagram below in the same way as for (1).

9. Check that the insulation resistance at (2) after 1 minute

is 10 M Ω or more.

Ground terminal

Display

Power supply lines

Measure switch

Range selection switch

(1)

Projector AC inlet

(2)

! Caution:

Because high voltages (500

V) are present, do not touch

the probe during testing.

Exposed metal part of projector

Computer IN connector

SEIKO EPSON

0-5

Revision:C

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