EPSON EMP-S4 Diagram
Data Projector
Service Manual
EMP-S4
EMP-S4
INTRODUCTION
This Service Manual describes the hardware information necessary for troubleshooting and
field service of the EMP-S4 DATA PROJECTOR.
Before starting service on this unit, always check the EPSON website for additional up-to date
service information provided in Technical Information Bulletins.
HOW TO USE THE SERVICE MANUAL
Before you start the maintenance service, read the SAFETY INSTRUCTIONS carefully.
The contents are as follows:
• Safety Instructions: Operator Safety, Maintaining the projector in good condition
• Chapter 1: PRODUCT SPECIFICATION (Part name, System function,
Specification, etc.)
• Chapter 2: THEORY OF OPERATION (Hardware, Internal connection,
Function of units, etc.)
• Chapter 3: TROUBLE SHOOTING
• Chapter 4: DISASSEMBLY & ASSEMBLY (Procedures to disassemble the
main unit)
• Chapter 5: APPENDIX (AS (After Service) menu)
VCCI RADIO FREQUENCY INTERFERENCE SELF RESTRICTION
This product is Type 1 information equipment and uses radio frequency energy. It fully complies with the rules of the Voluntary Control Council for Interference by Information Technology Equipment (VCCI). Accordingly, if this product is used in a residential area or place
situated close to residential area, it may interfere with reception of televisions or radios in the
neighborhood. Follow the instruction manual to avoid mishandling of this product.
TRADEMARK
EPSON is a trademark of SEIKO EPSON CORPORATION.
NOTICES
• This document should not be reproduced in whole or in part without the written permission
of SEIKO EPSON CORPORATION.
• Any information in this document is subject to change without prior notice.
• The information and specifications 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.
• Any influence by utilizing the document may be out of our responsibility regardless the
item 3 above.
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PRECAUTIONS
Some procedures require specific precautions that must be followed, and those will be noted
throughout this manual. Note the following precaution definitions:
WARNING
W A R N I N G
Procedures which, if not strictly observed, could result in personal injury are
described under the heading WARNING
CAUTION
C A U T I O N
CAUTION signals a precaution which, if ignored, could result in damage to equip-
ment.
REASSEMBLY
If assembly needs special attention or the procedure is different from the reversed
disassembly procedure, the correct procedure is described under the heading
REASSEMBLY.
CHECK POINT
C H E C K
P O I N T
Important tips for procedures are described under the heading CHECK POINT.
2006 SEIKO EPSON CORPORATION
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Manual Revision History
History Date Detail of change
Rev.A 2006.4.10
First Release
Rev.B 2006.5.9 Change in P.4-10.
Service memo
Make a note here of important technical information from Technical Information bulletins.
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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 car-
rying 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 buttons, rings and tie pins which may pose the danger of coming into contact with the projector.
2. PREVENTING INJURY
• Do not touch the lamp assy and the area around it with bare hands immediately after
turning the power off, or even after cool-down period is completed since the lamp and
the area around it may still remain hot.
• When removing the cover in order to carry out adjustments while power is being sup-
plied to the projector, be careful not to touch the fans (intake and exhaust).
• Always wear gloves when disassembling and reassembling the projector 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 projec-
tor, otherwise your eyes may be injured.
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. Furthermore, do not place any tools or projector components on top of or underneath the
projector.
• 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.
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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), bring the static-proof bag containing the new parts into
contact with a metallic section of the projector before taking out the component from the
static-proof bag.
2. USE OF GENUINE PARTS
• When replacing the structural components inside the projector (including the lamp assy),
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.
Note:These are simplified tests that can be carried out at a repair centre that is not
equipped with full safety testing equipment.
Test items
1). Insulation resistance test
2). Ground continuity check
3). Illumination check
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Testing procedure
Carry out testing in the order given below.
EMP-S4
Repair EndInsulation resistance test Ground continuity check
Safety inspections
Testing methods
1). Insulation resistance test
• Testing apparatus: Insulation ohmmeter (Rating: 500 V/100 MΩ)
Check Item Tool Standard
Insulation resistance check Insulation ohmmeter
• Insulation ohmmeter settings
1. Set the range selection switch to 500 V.
Ground terminal Line terminal
Display
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 MΩ 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 resistanc e at (2) a fter 1 minut e
is 10 MΩ or more.
Illumination check
Insulation resistance
should be 10 MΩ or
more.
! Caution
Because high voltage (500 V) is present,
do not touch the probe during testing.
Measure switch
a
Power supply lines
b
Range selection
switch
Projector AC inlet
(1) (2)
c
Computer IN connector
Exposed metal part of projector
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2). Ground continuity check
• Testing apparatus: Multimeter (with sensitivity down to 0.1 Ω)
Check Item Tool Standard
Ground continuity check Multimeter
• Multimeter settings
Display
1. Turn on the power switch.
2. Set the range selection switch to Ω.
3. Connect the black lead wire to the COM terminal.
4. Connect the red lead wire to the V/Ω/Hz terminal.
5. Check that the resistance at (1) in the diagram below is
0.5 Ω or less.
DC/AC, SW
Should be no resistance
(0.5 Ω or less)
a
Range selec-
tion switch
Power supply
lines
b
(1)
Terminals
Projector AC inlet
c
V, Ω, HzCOM
Computer IN connector
Exposed metal part of projector
3). Illumination check
• Test conditions: Input a PC or video signal to the projector and check the illumination for about 5 minutes.
• Evaluation: Projector should operate normally with no smoke or fire.
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Other
• Check that the connectors at both ends of the power cord are not dirty or bent, and clean
them if they are dirty. Furthermore, if there is any noticeable discoloration on the power
cord, it should be replaced.
• When connecting the connector cables and interface cables inside the projector, make
sure that the cable connectors are pushed on as far as they will go.
• To prevent problems caused by dirt getting into the optical system, always disassemble
and assemble the projector in an area which is free from floating dust.
• When disconnecting the FPC cable from the CN502 of the MA board assembly, release
the connector locks. To release the connector lock, push up both ends of the connector
simultaneously with tweezers.
CN502
Enlarged view of CN502
Locked
Unlocked
• When disconnecting the three FPC cables for the light valves from their connectors,
release the connector locks first.
Locked Unlocked
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3. NECESSARY REQUIREMENTS FOR SERVICE TECHNICIANS
Service technicians who carry out repairs and servicing work on the EMP-S4 must possess the
following knowledge and abilities:
• The service technician must have read and fully understood the contents of the User's
Guide, especially projector operation.
• The service technician must have a fundamental knowledge of working with electricity,
including safety procedures, knowledge regarding electrical circuits, and knowledge
regarding static electricity.
4. Others
• Any questions regarding repairs and service to this projector (such as supply of parts and
the contents of this Service Manual) should be directed to EPSON at the address below.
Furthermore, information regarding matters such as technical changes to the projector
are released when necessary in the form of Technical Information bulletins, and these
should be referred to also.
SEIKO EPSON CORPORATION
ADDRESS 4897 OH-AZA, SHIMAUCHI, MATSUMOTO-SHI,
NAGANO-KEN, 390-8640 JAPAN
TEL. 81-263-48-2946
FAX. 81-263-48-5680
SECTION VI.CS Quality Assurance Department
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Chapter 1 Product Specifications
1.1 Product Features .....................................................................................1-2
1.1.1 Features of the Projector...............................................................1-2
1.2 Components, Connectors and Switches..................................................1-4
1.2.1 External Components....................................................................1-4
1.2.2 Internal Components.....................................................................1-6
1.2.3 Remote Control.............................................................................1-7
1.3 Specifications...........................................................................................1-8
1.4 Interface Specifications..........................................................................1-10
1.4.1 Computer Port.............................................................................1-10
1.4.2 USB Interface..............................................................................1-11
1.4.3 S-Video Interface.........................................................................1-11
1.4.4 CVBS Input Interface/Audio Input Interface ................................1-12
1.5 External Views.......................................................................................1-13
Chapter 2 Theory of Operation
2.1 Hardware Overview .................................................................................2-2
2.1.1 Component Connection Diagram..................................................2-3
2.1.2 Control Circuitry.............................................................................2-4
2.2 Optical Engine..........................................................................................2-5
2.2.1 Lamp Assy.....................................................................................2 -7
2.3 MA Board.................................................................................................2-8
2.3.1 External View of MA Board ...........................................................2-8
2.3.2 Overview of Operation...................................................................2-9
2.4 Interface Connectors..............................................................................2-10
2.5 Power Supply Ballast Unit......................................................................2-11
2.5.1 Power Supply Circuit Block Diagram...........................................2-11
2.5.2 Overview of Operation.................................................................2-12
2.5.3 Connector CN2000 Pin Layout....................................................2-13
2.6 RC Board Assembly...............................................................................2-14
2.7 Speaker..................................................................................................2-15
2.8 Temperature Control..............................................................................2-16
2.8.1 Sensors and Switches .................................................................2-16
2.8.2 Fan Operation .............................................................................2-18
2.9 LED Indicators .......................................................................................2-21
Chapter 3 Troubleshooting
3.1 Before Carrying Out Troubleshooting......................................................3-2
3.1.1 Troubleshooting Tools and Equipment..........................................3-2
3.1.2 Field Replacement Parts...............................................................3-2
3.2 Overview..................................................................................................3-3
3.2.1 Exterior Check...............................................................................3-4
3.2.2 Internal Cable Check.....................................................................3-5
3.2.3 Power Supply On/Off.....................................................................3-6
3.2.4 Image Display and Quality ............................................................3-8
3.2.5 Audio Output ...............................................................................3-10
3.2.6 Control Panel...............................................................................3-11
3.2.7 Remote Control Operation ..........................................................3-12
3.2.8 A/V mute slide.............................................................................3-13
3.2.9 Other ...........................................................................................3-14
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Chapter 4 Disassembly/Assembly
4.1 Overview..................................................................................................4-2
4.1.1 Precautions ...................................................................................4-2
4.1.2 Tools and Equipment ....................................................................4-4
4.1.3 Projector-Specific Service Precautions.........................................4-5
4.2 Projector Disassembly and Assembly......................................................4-6
4.2.1 Removing the Model Name Plate..................................................4-9
4.2.2 Removing the Lamp Lid Assy and ELPLP36 Spare Lamp............4-9
4.2.3 Removing the Rear Foot/Rubber Foot..........................................4-9
4.2.4 Removing the Front Foot Unit.....................................................4-10
4.2.5 Removing the Air Filter Frame and Air Filter A............................4-10
4.2.6 Removing the Upper Case..........................................................4-11
4.2.7 Removing the RC filter, SW Light Shade Sheet B,
SW Board Assy,SW Cable Au, SW Button, and LED Lens ........4-13
4.2.8 Removing the Cover Lens Holder, Cover Lens Unit,
Cover Lens Sheet, Cover Lens Frame, Photo Interrupter,
Cover Lens Guide, Lamp Lid Latch Springand and SW Cable....4-16
4.2.9 Removing the MA Board Assy. ...................................................4-19
4.2.10 Removing the IF Case Set, RC Filter,
and SW Light Shade Sheet B ......................................................4-23
4.2.11 Removing the MA Plate...............................................................4-24
4.2.12 Removing the Optical Engine......................................................4-25
4.2.13 Removing the Focus Ring...........................................................4-25
4.2.14 Projection Lens ............................................................................4-26
4.2.15 Removing the RC Board Assy, RC Cable B, Safety Switch,
Intake Duct, Intake Fan, and Intake Fan Sheet............................4-27
4.2.16 Removing the Lamp Duct and Lamp Fan B ................................4-29
4.2.17 Removing the Exhaust Fan Set, Outer Exhaust Duct, and
Exhaust Fan B..............................................................................4-30
4.2.18 Removing the TH Board Assy, Cable RCR FIF,
Lamp Lid Detection Switch, and Inner Exhaust Duct..................4-32
4.2.19 Removing the Power Supply Fan B and Power Supply Assy .....4-33
4.2.20 Removing the Lamp Shield Plate, Power Supply Filter, and
Lower Case..................................................................................4-34
Chapter 5 Appendix
5.1 AS (After Service) Menu..........................................................................5-2
5.1.1 How To Display the AS (After Service) Menu ...............................5-2
5.1.2 Initializing (Resetting) the AS Menu Values..................................5-3
5.1.3 Software DIP Switches..................................................................5-4
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Chapter 1 Product Specifications
EMP-S4
1.1 Product Features
The EMP-S4 is a B4-sized portable projector that is the smallest and lightest in its class. It
offers high-quality color images allowing you to enlarge and project from personal computers,
video equipment (VCRs, video cameras, video disc players, etc.).
1.1.1 Features of the Projector
Compact and lightweight
• B4-sized dimensions: 247 mm x 327 mm x 99 mm (D x W x H)
• 2.6kg weight
Brilliant, attractive images
The Projector employs a high-luminance lamp assembly (170W) and an optical block that
allows the S4 to project images at a brightness of up to 1800 lm.
Full-color, high-resolution capabilities
The projector has three transparent LCD panels (R, G and B), each with 480,000 pixels which
can project images at resolution of up to 800 x 600 dots (approximately 1.677 billion pixels).
Quiet operation
Operating noise at low brightness is only 30 dB.
Brief cool-down period (Instant-Off function)
Cool-down is completed in just a few seconds when turning the projector power off.
Easy to Operate
The accessory remote control can be used for operations such as Freeze, E-Zoom, Effect,
A/V Mute, User's Logo Capturing and Resize functions.
Direct Power-ON
The projector is automatically turned on when an AC connector is plugged in.
Password Protect function
Activating the Password Protection Function prevents unauthorized persons from using the
projector.
Vertical keystone correction
This function allows users to correct vertical image distortion easily.
Color mode function
The images can be projected at the optimum image quality for the projecting environment by
selecting the image source and environment mode from one of seven preset settings.
• Photo
• Presentation
• Theatre
• Game
• sRGB
• Black Board
• Sports
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Automatic Incoming Signal Detection Function
The Search button on the remote control and the Source Search button on the control panel allow
the user to switch between images from different pieces of equipment connected to the projector each time either one of the two buttons is pressed. While the projector is detecting a source,
it displays the Search in Progress screen to show the user which source being detected.
Instant-Off Function
This lets the user to turn the projector off quickly by reducing the cool-down period. When the
Power button on the remote control or the control panel is pressed, the lamp is turned off and
then the end of power-off process is indicated by two beeps. The fans stops soon after the beep
regardless of the internal temperature.
Fan Speed Switch Function
When using the projector at high altitude (higher than 1,500 meters above sea-level), the fan
speed should be increased to cool the projector efficiently and extend the lamp life since air
density is low at high altitude. Select High for the Fan Speed in the Extended Menu to increase the
fan speed.
Image Shift Function
This allows the user to adjust the image position without moving the projector. The image
retains its original aspect ratio after it is moved. This function is useful when it is difficult to
set the projector straight in front of the screen.
After correcting keystone distortion and adjusting the zoom, a screen to select the image position is displayed. The user can select one of nine image position settings on the screen.
Lens-Shutter Function
Users can interrupt or restart the projection by opening and closing the A/V mute slide of the
main unit front. Closing the slide when the projector is not in use protects the lens from dirt
and scratches. During projection, closing the A/V mute slide turns off both the audio and
image while keeping the power and the lamp on.
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1.2 Components, Connectors and Switches
1.2.1 External Components
Lamp cover
Security lock ( )
Control panel
Focus ring
Remote control
light-receiving area
Air exhaust vent
Air intake vent
Foot adjust lever
A/V mute slide
Front adjustable foot
Figure 1-1. Main Unit Front
Foot adjust lever Front adjustable foot
Air filter
(air intake vent)
Ceiling mount
attachment points
(3 points)
Figure 1-2. Main Unit Bottom
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Computer port
Monitor Out port
Power inlet
Rear adjustable foot
[Menu] button
Displays and closes the configuration menu.
[Power] button
Turns the projector power on or of f.
Indicators
The colour of the
indicators and
whether they are
flashing or lit shows
the state of this
projector.
S-Video port
Video port
USB port
Remote control light-receiving area
Speaker
Audio input
Figure 1-3. Input and Output Connectors
[Enter] button
Automatically adjusts analogue RGB images from
computers and RGB video images to the optimum
images.
If a configuration menu or help screen is displayed, it
accepts and enters the current selection.
[Esc] button
Stops the current function.
Displays the previous screen or menu
while viewing a configuration menu.
[Help] button
Displays and closes the help, which
shows solutions if a problem occurs.
[Wide] [Tele] button
Adjusts the image size. If a configuration menu
[Source Search] button
The input source is automatically searched for in the
following order, and the input image from the connected
equipment is projected.
Computer port
S-Video port
Video port
[] []button
Press to correct keystone distortion.
If a configuration menu or help screen is displayed, it
selects menu items and setting values.
or help screen is displayed, it selects menu
items and setting values.
Figure 1-4. Control Panel
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1.2.2 Internal Components
EMP-S4
Control Panel
Cover Lens Frame Assy.
Lamp Assy.
TH Board
Lamp lid detection switch
Speaker
Upper case unit
MA Board
Optical Engine
IF unit
Safety Switch
Exhaust Fan
Power Supply Fan
Lamp Fan
Power Supply Unit
Intake Fan 1
Intake Fan 2
Figure 1-5. Major Internal Components
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1.2.3 Remote Control
[E-Zoom] button( ) ( )
() Enlarges parts of images without changing
the size of the projection area.
() Reduces the part of images that have been
enlarged using the ( ) button.
[Page down][Page up] buttons
When using the remote control as a wireless
mouse, press these buttons to scroll back and
forth through pages in a PowerPoint file.
[Enter] button
Accepts a menu or help item or displays the
next screen or menu when viewing a configuration menu or help menu.
Acts as a mouse left-click when using the
wireless mouse function.
[A/V Mute] button
The audio and video are turned on or off
each time the button is pressed.
[Pointer] button
Press to indicate part of an image being projected as part of a presentation.
[Computer] button
[S-Video] button
[Video] button
Switches to images from the corresponding
port.
[Auto] button
Automatically adjusts and optimises analogue
RGB computer video signals.
Numeric buttons
Use these buttons to enter a password when
using Password Protect.
EMP-S4
Remote control light-emitting area
Outputs remote control signals.
[Power] button
Turns the projector power on and off .
[] button
When a configuration menu or help menu
is displayed, the button selects menu items
and setting values.
When the wireless mouse function is activated, tilting this button moves the pointer
in the direction of tilt.
[Esc] button
Stops the current function.
Displays the previous screen or menu
while viewing a configuration menu.
Acts as a mouse right-click when using the
wireless mouse function.
[Freeze] button
Images are paused or unpaused each time
the button is pressed.
[Num] button
This is used when entering and changing
passwords.
[Menu] button
Displays and closes the configuration menu.
[Help] button
Each time this button is pressed, it displays
and hides the online help menu that can
assist you if you have a problem.
[Volume] buttons
Adjusts the sound volume.
[Search] button
The next input source is searched for automatically in the following order and the image input from the connected equipment is projected each time this button is pressed.
Computer port
S-Video port
Video port
[Color Mode] button
Changes the colour mode. When you press the button, the
colour modes change in the following order.
[Resize] button
When Component videog, Composite videog or S-Videog signals are being projected, the Aspect ratio changes each time
this button is pressed.
Figure 1-6. Remote Control
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1.3 Specifications
Projection System RGB Liquid Crystal Shutter Projection
Projection Method Front/Rear/Ceiling Mount
Size 0.5 inches with MLA
Driving Method Poly-silicon TFT Active Matrix
LCD
Specifications of
main parts
Projection lens
Lamp
Optical System Dichroic Mirror Separation & Prism combine Method
Screen Size (Projected Distance)
High Brightness
Brightness
Low Brightness
Contrast
Brightness Uniformity 85 % (Typ.)
Color Reproduction Full-Color (16.77 million colors)
Sound Output 1W Monaural
Color Mode
Effective Scanning
Frequency Range
(Analog)
Adjustment
Function
PC Photo, Presentation, Theatre, Game, sRGB, Black Board
Video Sports, Presentation, Theatre, Game, sRGB, Black Board
Pixel Clock 13.5 MHz to 162 MHz
Horizontal 15 MHz to 92 KHz
Vertical 50 MHz to 85 Hz
Projector/Remote Control
Tilt Angle 0 to 10degrees
Keystone
Correction
Pixel Number 480000 dots (800 x 600) x 3
Native Resolution SVGA
Aspect Ratio 4 : 3
Pixel Arrangement Stripe
Type
F-number 1.4
Focal Length 16.6 mm
Zoom Ratio 1.0 to 1.35
Offset 9.6 : 1
Type 170W
Life
PC
Component Video
Power zoom/Manual focus
2000 h (High Brightness)
3000 h (Low Brightness)
30 to 300 inch (1.19 to 12.12 m) (Zoom: Tele)
30 to 300 inch (0.87 to 8.97 m) (Zoom: Wide)
1800 ANSI lumens
(Color Mode: Game, Zoom: Wide)
1500 ANSI lumens
Color Mode: Game, Zoom: Wide)
500 : 1
Color Mode: Game, High Brightness)
Keystone/Brightness/Contrast/Tint/Saturation/Sound/
Input signal etc.
Vertical: -30 to +30 degrees
Vertical: -20 to +20 degrees Assuming the aspect ratio is 16 : 9.
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Display
Performance
Input Signal
Analog RGB I/O
Input T erminal
Output Signal Signal Type Not analog-RGB standard level
Video Output Terminal Mini D-sub 15 pin x 1 (Black)
Display Performance
Input Signal
Video I/O
Input T erminal
Control I/O USB I/O I/O Terminal
Operating Temperature 5 °C to 35 °C [41 °F to 95 °F]
Operating altitude 0 to 2286 m (0 to 7500 ft)
Cool-down period A few seconds (Instant-Off)
Start-up period About 4 seconds
Power Supply Voltage 100-240 VAC ± 10%, 50/60 Hz
Power
Consumption
Dimension
W eight Approximately 5.7 lb/2.6 Kg
Fan Noise
Accessories
Lamp ON 250W
Stand-by 5.0 W
Exclude Projection lens & Feet 247(D) x 327 (W) x 87 (H) mm
Maximum Dimension 247 (D) x 327 (W) x 99 (H) mm
High Brightness 36 dB
Low Brightness 30 dB
Power Cable 1.8 m
Computer Cable 1.8 m, Mini D-sub 15 pin - Mini D-sub 15 pin
Remote Control attached
Battery AAA battery x 2
Password Protect sticker attached
Soft Carrying Case attached
Native 800 x 600 dots
Signal Type Separ ate signal
Video Signal Analog (0.7 V p-p, 75 Ω/ Mac 0.714 Vp-p, 75 Ω)
Sync. Signal
Audio Signal 500 mVrms/47 KΩ
Video Mini D-sub 15 pin x 1 (Blue)
Audio RCA x 2 (Whie/Red)
Video Standard NTSC/NTSC4.43/PAL/M-PAL/N-PAL/PAL60/SECAM
Video Signal
Audio Signal 500 mVrms/47 KΩ
Video
Audio RCA x 2 (Whie/Red)
Separate (positive & negative, bi-polarity 2-5 Vpp)
Composite (positive & negative, bi-polarity 2-5 Vpp)
Sync-on-green (negative, 0.3 Vpp)
NTSC: 560 lines, PAL: 560 lines
Depending on observation of the multi-burst pattern)
Composite Video (1.0 Vpp/Sync.negative 75 Ω)
S-Video (Luminous 0.714 Vpp, Chrominous 0.286 Vpp, 75 Ω)
Component Video (Analog Y level 0.7 V 75 Ω/CrCb level ±
0.35 V 75 Ω/Sync., negative 0.3 V or 3-state ± 0.3 V on Y)
Video-RGB (0.7 Vp-p, 75 Ω/Mac 0.714 Vpp, 75 Ω)
Composite Video: RCA (Yellow) x 1
S-Video: Mini DIN
Component Video: Mini D-sub 15 pin (Blue)
(in common with Analog RGB connector)
Video-RGB: Mini D-su b 15 pin (Blue)
(in common with Analog RGB connector)
USB connector series B x 1
(for control of the mouse and keyboard)
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1.4 Interface Specifications
1.4.1 Computer Port
Mini D-sub, 15 pin (input)
CN102
7513S-15G2-08
11
6
1
15
10
5
EMP-S4
Figure 1-7.
Pin No. Signal Name Pin No. Signal Name
1R9(No pin)
2 G 10 GND
3B11GND
4 GND 12 SDA
5 GND 13 H Sync
6 GND 14 V Sync
7 GND 15 SCL
8 GND
Mini D-sub, 15 pin (output)
CN103
7513S-15G2
11
6
1
15
10
5
Pin No. Signal Name Pin No. Signal Name
1 OUT A 9 T.P
2 OUT B 10 GND
3 OUT C 11 T.P
4 T.P 12 T.P
5 GND 13 H Sync
6 GND 14 V Sync
7 GND 15 T.P
8 GND
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1.4.2 USB Interface
USB-Type B
CN503
UBB-4R-D14C
21
34
65
GND
1.4.3 S-Video Interface
EMP-S4
Pin No. Signal Name
1VBUS
2D3D+
4 GND
5 GND
6 GND
Mini DIN4 pin
CN100
TCS7708-012020
6
Pin No. Signal Name
1 GND
4
3
12
5
GND
2 GND
3 Y signal input
4 C signal input
5DET
6 GND
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EMP-S4
1.4.4 CVBS Input Interface/Audio Input Interface
RCA pin jack x 3
J101
YKC21-4098N
Pin No. Signal Name
1CVBS
2 GND
3L
4 GND
5R
6 GND
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1.5 External Views
EMP-S4
Unit: mm
Figure 1-8. External Dimens io ns
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EMP-S4
Figure 1-9. External Dimens io ns
Unit: Inch
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Chapter 2 Theory of Operation
EMP-S4
2.1 Hardware Overview
The hardware for the EMP-S4 can basically be divided into two sections: the optical engine
and the circuit system. This section of the manual describes functions of the major hardware
components.
The components and unit in the dotted frame shown in the diagram below make up an optical
engine and MA Board Kit, which is provided as one part.
*1: The Intake Fan cools the R, G and B light
valves (LCD panels).
170
Figure 2-1.
*2: The Exhaust Fan and the Lamp Fan mainly
exhaust heat from the Lamp Assy.
*3: During repair work, the section enclosed by the
dotted lines should be handled as a single unit.
Overview of Display Operation
1. The MA Board receives RGB/Component signals from the Computer port. Video signals or
S-Video signals are provided to the MA Board from the CVBS input or S-Video port. Analog signals are converted to digital signals at the MA board.
2. The digital display signals are temporarily stored in video memory on the MA board.
3. The R, G and B light valves control the amount of light that passes through the valves.
4. The light that passes through the light valves is combined by the prism and projected as an
image through the projection lens unit.
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EMP-S4
2.1.1 Component Connection Diagram
The connectors for the components and Main (MA) board are shown in the following diagram.
Photo
Interrupter
Lamp Fan
CN708
CN704 CN705 CN300 CN502
CN1500
CN1300
CN1400
CN102CN103
CN504 CN500
CN100 CN101
CN2000
CN706 CN501 CN707 CN701
CN503CN1800
Figure 2-2. MA Board Connectors
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EMP-S4
MONI TOR O UT TE ST
CONE CTOR
USB
TP
15
(TI )
RCA-
RCA-
VI
Audio
Bu
ffe
Buzze r
Video AMP
EL830 2
2.1.2 Control Circuitry
The control circuits are illustrated in the following block diagram.
CONECTOR
MONITOR OUT TEST
Newly added part
DD5
GAUGE5S
Driver ASIC
DD5
DD5
NRS
AMP
Thermister
Thermister
FAN Driver
Circuit
Power Supply
POWER SUPPLY LAMP Ballast
AC
PANEL DRIVER B LOCK
(SST)
16Mbit
SST36VF 1602E
FLASH ROM
ADC
Main CPU
Frame Memory
Image Processor
Resizing
Frame Rate Conversion
OSD
Video Decoder
Color Space Conversion
PW190
( Pixelworks )
LED
KEY
MATRIX
4W
( ROHM)
BR24C21F
EL8302
DDC EEPROM
Video AMP
r
ffe
Monitor Out
Bu
DDC
RGB
YUV
Sync
DDC
RGB
YUV
DSUB15
Sync
DSUB15
PC
Y/C
RCA
CVBS
DEO
VI
DIN4
Vol Control,Mute
-B
USB
Audio
2
A015
(TI)
TP
Buzzer
2.8W
L
R
RCA-
RCA-
IR
HU MA N I/F
PC/VIDEO I/F
Figure 2-3. Control Circuit Block Diagram
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