Epson RS-353 User manual

EPSON LCD PROJECTOR
Multimedia Projector
RS-353
EPSON

INTRODUCTION
This Service Manual describes of the hardware information which is necessary for the
smooth field service of the DATA PROJECTOR 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
chapter 1: GENERAL (PART NAME, SYSTEM FUNCTION, SPECIFICATION, etc...)
chapter 2: THEORY OF OPERATION CONNECTION,
FUNCTION OF UNITS, etc...)
chapter 3: DISASSEMBLE &ASSEMBLE (ASSEMBLY PROCESS for MAIN FRAME
REMOTE CONTROLLER)
chapter 4: TROUBLE SHOOTING (TROUBLE SHOOTING FLOW CHART, etc...)
chapter 5: FUNCTION TEST, ADJUSTMENT (TEST PROGRAM, ADJUSTMENT
FLOW, etc...)
Appendix PARTS LIST, ASSEMBLY DRAWING, etc...
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 rules). If not installed and used properly
manufacturer’s instructions, may cause interference to radio and television reception.
TRADEMARK
NEC and PC-98 SERIES are the trademarks of NEC CORPORATION.
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. 1996 SEIKO EPSON CORPORATION

Record of Revisions
History Issued Date
REV-A
Alternation
Original Issued (RS-353)
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
(adjusting 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 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 adjustment
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 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
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 wrist band and
the electrostatic mat with grounding. When replacing any electric components
(Boards and Light Bulb), 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 light source lamp, fuse, air filter and soon.
* Use only the power cable and the interface cables which come 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 the connectors until it stuck to the connector edge.
*When remove the FPC cable of the light bulb, be 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 RS-353.
* 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 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: VI QUALITY ASSURANCE SEC.

Index
Chapter 1 Product general
1.1
1.2
1.3
1.4
1.5
1.6
Product general...........................................................................................
l-l
Part name.. ................................................................................................
.
1-2
1.2.1 Outside view of main frame ...............................................................
1-2
1.2.2 Inside view of main frame..................................................................
l-4
1.2.3 Outside view of remote controller ......................................................
1-5
1.2.4 Inside of remote controller .................................................................
l-6
Connection .................................................................................................
l-7
1.3.1 IBM DOS/V or compatible .................................................................
l-7
1.3.2 Macintosh ..........................................................................................
1-8
1.3.3 NEC PC-98 or compatible .................................................................
1-9
Main component.. .......................................................................................
l-10
Specifications .............................................................................................
1-13
Interface specification ................................................................................ 1-14
1.6.1 Mouse interface specification ............................................................
1-14
1.6.2 Computer interface board.................................................................. 1-18
1.6.3 Computer audio input........................................................................
l-18
1.6.4 Video interface board ........................................................................
l-19
1.6.5 I/O terminals layout (undefined) ........................................................
l-20
Chapter 2 Theory of operation
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.9
Hardware....................................................................................................
2-l
2.1 Electrical system connections ........................................................... 2-2
Optical system connections
............................................................... 2-3
Power supply unit ......................................................................................
Main board ................................................................................................
.2-6
Driver board...............................................................................................
.2-10
Interface board unit .................................................................................... 2-12
Operation panel.......................................................................................... 2-13
Receptor board .......................................................................................... 2-13
Speaker unit ..............................................................................................
.2-13
Light guide block ........................................................................................ 2-14
2.10 Light bulb R/G/B to prism unit ..................................................................
2.9.1 Light bulb R/G/B ................................................................................ 2-16
2.9.2 Prism unit .......................................................................................... 2-17
2.11 Projection lens........................................................................................... 2-18
2.12 Lamp housing ........................................................................................... 2-19

Chapter 3 Disassembly and assembly
3.1 Disassembly and assembly procedures ....................................................
3.2 Disassembling and assembling the
LCP
main unit.. ..................................
3.2.1
Removing the lamp inner housing.................................................... .3-4
3.2.2 Removing the upper case unit and handle.. .....................................
3.2.3 Removing the air filter flame............................................................. .3-7
3.2.4 Removing the main board block.......................................................
3.2.5 Removing the exhaust fan unit.. .......................................................
3.2.6 Removing the safety switch.. ............................................................
1
3.2.7 Removing the operation panel .........................................................
3.2.8 Removing the
speaker
units.............................................................
3.2.9 Removing the receptor board
assembly..
3.2.10 Removing the driver board assembly .............................................
3.2.11
Removing the power supply unit ....................................................
3.2.12 Removing the interface unit assembly.. .......................................... 7
3.2.13 Removing the lamp outer housing unit...........................................
3.2.14 Removing the foot adjuster
unit..
.................................................... 9
3.2.15 Removing the optical block ............................................................ .3-20
3.2.16 Removing the projection
lens unit
(PLU) ........................................
3.2.17 Removing the cooling fan/optical head unit/light guide 2
3.2.18 Removing the upper light guide from the light guide unit..
.............
3.2.19 Removing light valves and
B.. ................................................ .3-25
3.2.20 Removing the prism unit.................................................................
.3-26
3.2.21
Removing the inlet unit................................................................... .3-27
3.3 Disassembling and assembling the remote control unit
............................
Chapter Troubleshooting
4.1 Before starting
troubleshooting
procedures ..............................................
4.1 Tools and accessories required for troubleshooting..
...................
4.1.2 Field
replacement
parts..
..............................................................
4.2 First action .................................................................................................. 4-2
Chapter Adjustments
5.1 Focus
alignment adjustment .....................................................................
5.1
Preparations.....................................................................................
5.1.2 Focus adjustment.. ...........................................................................
5.1.3 Alignment adjustment.......................................................................
5.2 Image adjustment program.. ......................................................................
5.2.1 Conditions that require the adjustments provided by the
image adjustment program............................................................... 0
5.2.2 Running the program .......................................................................
1

Appendix
Al -A3
Al9
Exploded diagram
Circuit diagram
Chromatcity diagram

Chapter 1
Product general.

1.1 PRODUCT GENERAL
RS-353 DATA PROJECTOR designed as the new model of RS projector series
is the portable, easy to use presentation device with VGA resolution to
project enhanced color images from the personal computers CRT and any video
equipment such as VCRs, video camcorders and video disc players.
FEATURE OF LCP
Figure I- 1
* 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 6.7 kg(lkg lighter than the
conventional projectors). An optional carrying case will be useful in transporting.
Bright and clear image
The high performance zoom lens, the new type of high brightness lamp and the
optical block enable to achieve a wide projection image from to 300” (projection
distance 1.2 to 12.3 m). An optional high brightness screen will supply the high
brightness (400 lx which is 30 percent more than that of the conventional projectors)
even in the right ambient.
* High resolution full color (16770 thousands colors)
3 (R, G, and B) of TN liquid crystal panels of 307,200 pixel will supply VGA resolution
of 640 x 480 dots (approx.920 thousand pixels). The grid between pixels of the liquid
crystal panel is thinner than that of the conventional projectors to provide sharp
contrast.
* Standard attachment of remote controller
The easy to use controller designed for satisfying the presentation tools enables to
handle various functions. The main operations for the functions are controllable with
one hand. If using the controller with an optional cable, you can use it as a computer
mouse.
* Connectivity with various computers
The advanced data signal determination function enables RS-353 to connect with
various computers such as EPSON PC, IBM PC (include DOS/V compatibles),
Macintosh, and NEC PC-98 series. It also determines video signal of NTSC, PAL,
SECAM.
*Projector conforming to DDC
RS-353 conforms to DDC standards. When you connect this device to the
computer conforming to DDC, the output signals of it are automatically converted into
VGA images and projected.
* Simple Maintenance
the maintenance easy. Number of adjustment process is also minimized.

1.2 PART NAME
1.2.1
OUTSIDE VIEW OF MAIN FRAME
Temperature indicator
Foot adjuster lever
Figure 2
button
lamp
button
button
select button
select lamp
status lamp
adjust button
adjust button
1 button
Figure 3
l-2

Speaker
Input/Output
Power inlet
Figure 4
Input/Output interface
Foot
Figure 5
Lamp
interface
Figure I- 6
l-3

1.2.2
INSIDE VIEW OF MAIN FRAME
Safety switch Power supply u
it
\
Figure 7
unit
Operator panel
Figure 8
l-4

12.3 OUTSIDE VIEW OF REMOTE CONTROLLER
Remote controller
LED
EPSON
Figure 9


12.4 INSIDE VIEW OF REMOTE CONTROLLER
Figure 10
Figure 11
l-6

1.3 CONNECTION
IBM DOS/V or compatible
Desktop type
cable
(Black)*
Audio cable*
Figure 12
Note type
Computer cable*
Audio cable*
* Attached accessories
Figure I- 13
l-7

Macintosh
(1) Desktop type
Figure 14
* Attached accessories
Dip switch settings are required according to the machine type.
Refer to the following table for detail. (Default setting is MAC13 mode.)
Switch A
Switch B
Switch A “ON Switch B “ON
MAC1 3” Mode
8
MAC1 6” Mode
8
Multi Res.
Figure 15
(2) Power Book
Audio cable*
*Attached accessories
Figure I- 16
1-8

NEC PC-98 or compatible
(1) Desktop type
Attached accessories
Figure  
Note type
Attached accessories
 


1.4
MAIN COMPORNENT.
Main board
Driver board
Figure 19
Interface unit
Figure 21
l - 1 0

Power supply
Figure 22
Light Guide block
Figure 23
Optical Head unit
Figure 24
l-l 1