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Data Projector
Service Manual
EMP-S3
EMP-S3
INTRODUCTION
This Service Manual describes the hardware information necessary for troubleshooting and field service of the EMP-S3 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 IN G
Procedures which, if not strictly observed, could result in personal injury are described under the heading WARNING
CAUTION
C A U T IO 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 IN T
Important tips for procedures are described under the heading CHECK POINT.
2005 SEIKO EPSON CORPORATION
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Manual Revision History
History Rev.A Rev.B
Date 2005.3.11 2006.5.9
Detail of change First Release Change in P.4-15.
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 carrying 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 supplied 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 projector, 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.
Repair Insulation resistance test Ground continuity check Illumination check End
Safety inspections
Testing methods 1). Insulation resistance test · Testing apparatus: Insulation ohmmeter (Rating: 500 V/100 M)
Check Item Tool Standard
Insulation resistance check · Insulation ohmmeter settings
Ground terminal Line terminal
Insulation ohmmeter
Insulation resistance should be 10 M or more.
Display
1. 2. 3. 4.
5. 6. 7. 8.
9.
Set the range selection switch to 500 V. Connect the black lead wire to the ground terminal. Connect the red lead wire to the line terminal. 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. Next, insert the probe of the red lead wire into a. Set the measure switch to LOCK, and then measure the insulation resistance after 1 minute. Check that the insulation resistance after 1 minute is 10 M or more. Next, measure the insulation resistance at (2) (between b and c) in the diagram below in the same way as for (1). Check that the insulation resistance at (2) after 1 minute is 10 M or more.
Measure switch
a
Power supply lines
Range selection switch
b
Projector AC inlet
(1) ! Caution
Because high voltage (500 V) is present, do not touch the probe during testing.
(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 )
Check Item Tool Standard
Ground continuity check · Multimeter settings
Display
Multimeter
Should be no resistance (0.5 or less)
1. 2. 3. 4. 5.
Turn on the power switch. Set the range selection switch to . Connect the black lead wire to the COM terminal. Connect the red lead wire to the V//Hz terminal. Check that the resistance at (1) in the diagram below is 0.5 or less.
DC/AC, SW
a
Range selection switch Power supply lines
b
Projector AC inlet
(1)
Terminals
c
COM V, , Hz
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 CN903 of the MA board assembly, release the connector locks. To release the connector lock, push up both ends of the connector simultaneously with tweezers.
CN903
Enlarged view of CN903
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-S3 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, SIMAUCHI, MATSUMOTO-SHI, NAGANO-KEN, 390-8640 JAPAN TEL. 81-263-48-5437 FAX. 81-263-48-5680 SECTION VD.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 Audio Input Interface/CVBS 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 Other ........................................................................................... 3-13
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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 ......................................... 4-4 4.2 Projector Disassembly and Assembly...................................................... 4-6 4.2.1 Removing the Model Name Plate.................................................. 4-8 4.2.2 Removing the Lamp Lid Assy and Lamp Assy.............................. 4-8 4.2.3 Removing the Lens Cap Unit ........................................................ 4-9 4.2.4 Removing the Rear Foot/Foot Rubber .......................................... 4-9 4.2.5 Removing the Front Foot Unit ..................................................... 4-10 4.2.6 Removing the Air Filter Frame and Air Filter, A........................... 4-10 4.2.7 Removing the Upper Case .......................................................... 4-11 4.2.8 Removing the RC Filter, Upper Cushion, PS Cushion, SW1 Light Shade Sheet, SW Board Assy, SW Cable, and Upper Case Sheet 4-13 4.2.9 Removing the MA Board Assy. ................................................... 4-16 4.2.10 Removing the IF Case Set, RC Filter and SW2 Light Shade Sheet4-20 4.2.11 Removing the MA Plate............................................................... 4-21 4.2.12 Removing the Optical Engine...................................................... 4-22 4.2.13 Removing the Focus Ring and Projection Lens Knob................. 4-22 4.2.14 Removing the Projection Lens Unit ............................................. 4-23 4.2.15 Removing the RC Board Assy, Cable RCR, Safety Switch, Intake Duct, Intake Fan (BG0703-B044), and Intake Fan (BG0703-B044-00L-E1)4-24 4.2.16 Removing the Exhaust Fan Assy, Fan 80, and Outer Exhaust Duct4-26 4.2.17 Removing the TH Board Assy, Cable Assy RC, Lamp Cover Detection Switch, and Inner Exhaust Duct4-28 4.2.18 Removing the Power Supply Assy. ............................................. 4-29 4.2.19 Removing the Lamp Shield Plate and Lower Case..................... 4-30
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-S3
1.1 Product Features
The EMP-S3 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: 246 mm x 327 mm x 98 mm (D x W x H) · 2.5kg weight Brilliant, attractive images The Projector employs a high-luminance lamp assembly (UHE-135W) and an optical block that allows the S3 to project images at a brightness of up to 1600 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 28 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 2,000 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.
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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
Front adjustable foot Lens cover Foot adjust lever
Figure 1-1. Main Unit Front
Foot adjust lever Front adjustable foot Lens cover tether attachment point
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
S-Video port Video port
USB port Remote control light-receiving area
Power inlet
Speaker Rear adjustable foot Audio input
Figure 1-3. Input and Output Connectors
[Menu] button Displays and closes the configuration menu. [Power] button Turns the projector power on or off. [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.
Indicators The colour of the indicators and whether they are flashing or lit shows the state of this projector.
[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
[Wide] [Tele] button Adjusts the image size. If a configuration menu or help screen is displayed, it selects menu items and setting values. [ ][ ]button Press to correct keystone distortion. If a configuration menu 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
Control Panel
Upper case unit
MA Board
Lamp Assy.
Optical Engine
TH Board Lamp lid detection switch Safety Switch Exhaust Fan
Speaker
IF unit
Power Supply 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.
Remote control light-emitting area Outputs remote control signals. [Power] button Turns the projector power on and off.
[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. [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
[ ] 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.
[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 Projection Method Size Driving Method LCD Pixel Number Native Resolution Aspect Ratio Pixel Arrangement Specifications of main parts Projection lens Type F-number Focal Length Zoom Ratio Offset Type Lamp Optical System Screen Size (Projected Distance) High Brightness Brightness Low Brightness Contrast Brightness Uniformity Color Reproduction Sound Output Color Mode PC Video Life RGB Liquid Crystal Shutter Projection Front/Rear/Ceiling Mount 0.5 inches with MLA Poly-silicon TFT Active Matrix 480000 dots (800 x 600) x 3 SVGA 4:3 Stripe Manual focus 1.4 16.6 mm 1.0 to 1.35 9.6 : 1 135 W UHE 2000 h (High Brightness) 3000 h (Low Brightness) Dichroic Mirror Separation & Prism combine Method 30 to 300 inch (1.19 to 12.12 m) (Zoom: Tele) 30 to 300 inch (0.87 to 8.97 m) (Zoom: Wide) 1600 ANSI lumens (Color Mode: Game, Zoom: Wide) 1400 ANSI lumens Color Mode: Game, Zoom: Wide) 500 : 1 Color Mode: Game, High Brightness) 85 % (Typ.) Full-Color (16.77 million colors) 1W Monaural Photo, Presentation, Theatre, Game, sRGB, Black Board Sports, Presentation, Theatre, Game, sRGB, Black Board 13.5 MHz to 162 MHz 15 MHz to 92 KHz 50 MHz to 85 Hz Keystone/Brightness/Contrast/Tint/Saturation/Sound/ Input signal etc. 0 to 10degrees PC Component Video Vertical: -30 to +30 degrees Vertical: -20 to +20 degrees Assuming the aspect ratio is 16 : 9. Freeze, E-Zoom, A/V Mute, Pointer, User's Logo, Resize, Auto detection of RGB/YCbCr, Operation Lock, Password Protected (Security function), Direct ON
Pixel Clock Effective Scanning Frequency Range Horizontal (Analog) Vertical Projector/Remote Control Adjustment Function Tilt Angle Keystone Correction Other Functions
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Display Performance
Native Signal Type Video Signal
800 x 600 dots Separate signal Analog (0.7 V p-p, 75 / Mac 0.714 Vp-p, 75 ) Separate (positive & negative, bi-polarity 2-5 Vpp) Composite (positive & negative, bi-polarity 2-5 Vpp) Sync-on-green (negative, 0.3 Vpp) 500 mVrms/47 K Mini D-sub 15 pin x 1 (Blue) RCA x 2 (Whie/Red) Not analog-RGB standard level Mini D-sub 15 pin x 1 (Black) NTSC: 550 lines, PAL: 550 lines Depending on observation of the multi-burst pattern) NTSC/NTSC4.43/PAL/M-PAL/N-PAL/PAL60/SECAM Composite Video (1.0 Vpp/Sync.negative 75 ) S-Video (Luminous 0.714 Vpp, Chrominous 0.286 Vpp, 75 ) Component Video (Analog Y level 0.7 V 75 /CrCb level ± 0.35 V 75 /Sync., negative 0.3 V or 3-state ± 0.3 V on Y) Video-RGB (0.7 Vp-p, 75 /Mac 0.714 Vpp, 75 ) 500 mVrms/47 K 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-sub 15 pin (Blue) (in common with Analog RGB connector)
Input Signal Analog RGB I/O
Sync. Signal Audio Signal
Input Terminal Output Signal
Video Audio Signal Type
Video Output Terminal Display Performance Video Standard
Input Signal
Video Signal
Video I/O
Audio Signal
Input Terminal
Video
Audio Control I/O USB I/O I/O Terminal
RCA x 2 (Whie/Red) USB connector series B x 1 (for control of the mouse and keyboard) 5 °C to 35 °C [41 °F to 95 °F] A few seconds (Instant-Off ) About 5 seconds 100-240 VAC ± 10%, 50/60 Hz 195 W 4.0 W 246 (D) x 327 (W) x 86 (H) mm 246 (D) x 327 (W) x 98 (H) mm Approximately 5.6 lb/2.5 Kg 36 dB 28 dB 1.8 m 1.8 m, Mini D-sub 15 pin - Mini D-sub 15 pin attached AAA battery x 2 3.5 mm stereo mini-plug (male)- 2 RCA (female) 15 cm attached attached (new type) Lamp, Air filter, Soft carrying case (for a computer), Screen, Image Presentation Camera, Ceiling mount kit
Operating Temperature Cool-down period Start-up period Power Supply Voltage Power Consumption Dimension Weight Fan Noise High Brightness Low Brightness Power Cable Computer Cable Remote Control Accessories Battery Audio Adaptor Password Protect sticker Soft Carrying Case Options Lamp ON Stand-by Exclude Projection lens & Feet Maximum Dimension
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1.4 Interface Specifications
Figure 1-7.
1.4.1 Computer Port
Mini D-sub, 15 pin (input)
Pin No. 1 CN101 7513S-15G2-08
11 6 1 15 10 5
Signal Name R G B GND GND GND GND GND
Pin No. 9 10 11 12 13 14 15
Signal Name (No pin) GND GND SDA H Sync V Sync SCL
2 3 4 5 6 7 8
Mini D-sub, 15 pin (output)
Pin No. 1 CN102 7513S-15G2-08
11 6 1 15 10 5
Signal Name OUT A OUT B OUT C T.P GND GND GND GND
Pin No. 9 10 11 12 13 14 15
Signal Name T.P GND T.P T.P H Sync V Sync T.P
2 3 4 5 6 7 8
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1.4.2 USB Interface
USB-Type B
CN1600 UBB-4R-D14C Pin No.
2 1
Signal Name VBUS DD+ GND GND GND
1 2
3
4
3 4
5
6
5 6
GND
1.4.3 S-Video Interface
Mini DIN4 pin
CN100 TCS7708-012021 Pin No. 1 2
4 2 6 5 3 1
Signal Name GND GND Y signal input C signal input DET GND
3 4 5 6
GND
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1.4.4 Audio Input Interface/CVBS Input Interface
Stereo mini pin jack
J100 YKC21-4098N
Pin No. 1 2 3 4 5 6
Signal Name CVBS GND L GND R GND
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1.5 External Views
Unit: mm
Figure 1-8. External Dimensions
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Unit: Inch
Figure 1-9. External Dimensions
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Chapter 2 Theory of Operation
EMP-S3
2.1 Hardware Overview
The hardware for the EMP-S3 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). *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.
Figure 2-1.
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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2.1.1 Component Connection Diagram
The connectors for the components and Main (MA) board are shown in the following diagram.
Figure 2-2. MA Board Connectors
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Monitor Out
DDC
Newly added part
MONITOR OUT TEST CONNECTOR
RGB YUV Sync
BideoAMP IC180 EL8302 Buffer DDC EEPROM
DSUB15
CVBS RCA Y/C DIN4 IC300 IC105
AMP
NRS
DD 5
SEIKO EPSON
PC
DDC RGB YUV Sync IC100
PANEL DRIVER BLOCK
Image Processor
IC1100 GAUGE5
Driver ASIC
DD5
DSUB15
A/D Converter + Chroma
Main CPU Frame Memory Resizing Frame Rate Conversion Color Space Conversion OSD
2.1.2 Control Circuitry
VIDEO
DD5
Serial DAC IC1001
Thermister
Audio
1W
RCAL IC1700 RCAR
EMP-S3
The control circuits are illustrated in the following block diagram.
Figure 2-3. Control Circuit Block Diagram
2-4
Vol Control,Mute
V850/SA1-26 PISCES2 FLASH ROM
16Mbit IC302
FAN Driver IC1002 IC1003 IC1005 BA00ASFP
SRAM
1Mbit
USB-B
Power Supply Circuit
IR
KEY MATRIX
LED
Buzzer
HUMAN I/F PC/VIDEO I/F
Revision:B
AC
POWER SUPPLY
LAMP Ballast
EMP-S3
2.2 Optical Engine
The optical system consists of four components: the Lamp Assys., the Light Guide Unit, the Panel-on-Prism (POP) Unit, and the projection lens. These four components together are called the Optical Engine.
Light Valve (B)
Projection lens (focus) POP Unit
Light Valve (R)
Light Valve (G)
Light Guide Unit
Figure 2-4. Optical Engine
Optical Engine
Figure 2-5. Optical Engine Functional Diagram
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C H E C K P O IN T
The Lamp Assy., Light Guide Unit, POP Unit, and Projection Lens together make up the Optical Engine. These components are assembled and adjusted together at the factory, and are not available as separate service parts.
C A U T IO N
Do not subject the optical system components to physical shocks or strong vibration. Do not disassemble the Light Guide Unit. Disassembly will cause color distortion, even if reassembled very carefully. The Optical Engine and MA Board are figured and adjusted together at the factory. They are only available as a matched pair, and must always be replaced together when either the Optical Engine or MA Board has a failure. Table 2-1.
Component Name
Function/Other
Lamp Assy.
Light Guide Unit
POP Unit and Projection lens
An UHE-135W discharge lamp is the light source. The Light Guide Unit disperses the light from the light source via lens arrays A and B in order to provide uniform illumination. In addition, a UV filter protects the LCDs from harmful ultraviolet light. After this light is polarized, it is then split into 3 spectrums (R, G and B). The Panel-on-Prism (POP) Unit, which incorporates the Light Valves, controls the intensity of the distributed components of the RGB light. The prism unit then integrates the RGB light and sends it through the projection lens.
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2.2.1 Lamp Assy.
The Lamp Assy. is comprised of the Lamp (UHE-135W) and Ballast Power Supply Connector. The Ballast Power Supply Connector is used to supply the AC voltage from the ballast unit for driving the lamp. The lead wires are connected to the lamp. The lamp is fastened to the bottom of the projector body with 2 screws. The lamp is a consumable part, and is to be replaced as the luminance of the Lamp Assy. declines over time as the lamp is used. Maximum luminance is obtained when a new lamp is first installed. After approximately 1,900 hours at high brightness or 2,900 hours at low brightness, the luminance will drop by approximately 50%.
Ballast Power Supply Connector
Figure 2-6.
The Lamp may be replaced at any time. Replace the Lamp Assy. before the full 1900-hour period (at high brightness) or 2900-hour period (at low brightness) has been reached if it seems that the luminance of the lamp is unacceptable during actual use. The cumulative operating time for the Lamp Assy. is stored in IC300 (I/F Controller) on the MA board. When the lamp is replaced, the lamp timer should be reset using the Reset Lamp Timer function in the Reset menu. Check the Lamp Time in the About menu to confirm that the timer has been correctly reset.
Figure 2-7. Lamp Assy. Control Circuit
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2.3 MA Board
The MA board processes the core circuit controls for the projector, including interface control, operation panel control, temperature sensor circuit and fan control, ballast power supply control and the Infrared RC board interface. The MA board also contains an imaging processor (PW465), EEPROM, digitizers (ADC and video decoder), and SRAM memory.
2.3.1 External View of MA Board
Figure 2-8. MA Board Top
Figure 2-9. MA Board Bottom
* The MA Board and the Optical Engine must always be replaced together.
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2.3.2 Overview of Operation
Digitalization control of the picture signal Converts the analog RGB image signals input from Computer/Component Video port from analog to digital form. Frequency transformation control Transforms the picture signal into the appropriate signals to drive the R, G and B LCD panels. On screen display Displays the menu and other information overlaid onto the input picture signal. Remote control Receives and decodes IR signals from the remote control and supplies control signals to various MA board circuits. Mouse control Converts pointer information contained within the remote control signals into mouse signals in PS/2 and USB serial format to send them to the computer. Lamp control Controls the ballast and lamp illumination. LED control Controls the display characteristics of the LEDs that indicate the power, temperature and operational status of the projector. Cooling control Measures temperature and controls the speed of the fan. Power supply control Controls low-power consumption, sleep and stand-by modes.
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2-9
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2.4 Interface Connectors
The MA board includes interface connectors for external devices such as video equipment. The MA board is equipped with the following connectors.
Computer port S-Video port USB port
Monitor Out port
Remote control light-receiving area
Video port
Audio input
Figure 2-10. IF Board External Connectors
Computer/ Component Video (Output) Computer/ Component Video (Intput) S-Video
CN102 CN101 CN100 CN1600 J100 IC501 IC1700 IC1701
Speaker
IC105 PW2200 A/D Converter + Chroma
IC300 PW164B Image Processor
USB TypeB Audio input/CVBS input
Figure 2-11. MA Board Block Diagram
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2-10
Revision:B
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2.5 Power Supply Ballast Unit
The Power Supply Ballast Unit contains the power supply/ballast section, power supply filter and the AC cord socket. The power supply/ballast section re-regulates the DC power supply that comes from the AC inlet and power supply filter in order to generate the AC power supply 135W for the UHE lamps.
AC Inlet
Figure 2-12. Power Supply Ballast Unit
2.5.1 Power Supply Circuit Block Diagram
AC Input AC100-240V
EMI Filter
EMI Filter
Ballast output 195W The First Power Supply Smoothing/Control circuits
DC output to CN2000 on MA board
Secondary Power Supply
Figure 2-13. Power Supply Circuit Block Diagram
Fuse: EMI filter circuit:
Protects the power supply and internal circuitry from overcurrent on the AC supply line. Eliminates interference from the AC power supply input.
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2.5.2 Overview of Operation
The output cable of the power supply unit is connected to CN2000 on the MA board. It allows the following voltages and signals to be transmitted. · DC output · The power supply On/Off signal (PWON)
C A U T IO N
Background power is still supplied to the MA board through CN2000 connector as long as the power cord is connected to the projector, even if the [Power] switch is turned off. The EMI filter/regulator circuit eliminates interference (noise) from the AC line and generates the DC voltage for the regulators. The DC voltages shown in the tables below are generated by a Switching Regulator. No fluctuations in output potential occur as a result of load fluctuations, and the individual output voltages cannot be adjusted. Table 2-2.
Output voltage Signal name
Output voltage Voltage accuracy
Ripple (mVpp)
Ripple/ Spike (mVpp)
Output current Standby mode Min Typ
Protection circuit Load capacOverOver- ity (Refervoltage current ence) (ÉþF)
+5 +7 +13 +18
+5 V +7.2 V +13.8 +1.8
±5 % +0.8 V/-0.4 V +15 V ~ +13.5 V
100 100 200 400 25 Vpp
200 200 300 400 25 Vpp
20 mA to 220 mA 20 mA 3.5 A 0A 0A 0A (0.1) 0A 0.5 A
-
Shutoff Shutoff Shutoff Shutoff Shutoff
100 200 100+470 47
0.2 A 1.5 A 0.2 A 0.45 A
+16 V ~ +23 V Ballast 380 VDC 360-400 Output VDC
(0.1) 195 W 410 V
The power supply fan reduces the internal heat in the power supply unit. The heated air discharged from the power supply unit is then exhausted with the exhaust fan connected to CN1004 on the MA board.
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2.5.3 Connector CN2000 Pin Layout
1 12
13
24
Figure 2-14.
Power Supply Connector (connected to CN2000 on the MA board) Pinout Definition
Pin No. Signal name Pin No. Signal name
1 2 3 4 5 6 7 8 9 10 11 12
PFCON +5 V_T GND +5 V_T +5 V_T +7 V GND +12 V GND +18 V GND NC
13 14 15 16 17 18 19 20 21 22 23 24
GND +5 V_T GND +5 V_T +5 V_T +7 V GND +12 V GND +18 V FANCON1 (reserved) FANCON2 (reserved)
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2-13
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2.6 RC Board Assembly
The Remote Control (RC) board is equipped with sensors that detect (receive) infrared signals transmitted from the remote control. The two RC IR sensors are mounted on the front and rear of the projector.
Front IR Receiver Sensor Rear IR Receiver Sensor
RC Board
Figure 2-15. RC Receiver Sensor
The output signals (serial data) received by the sensors are sent to IC501 (PISCES2) on the MA board. The MA board uses the serial data received from the remote control button switches to control the power ON/OFF status, menu start, and control the display (temporary stop, blank, etc.). The remote control function is illustrated in Figure 2-16.
Figure 2-16. Remote Control Circuit Block Diagram
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2-14
Revision:B
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2.7 Speaker
The projector has a single 1 W built-in speaker that is at the rear of the projector. It can be used for monaural output of the sound that is input to the projector from a host computer or video source. The signal from the computer or video source is amplified by the audio control circuits on the AV board and then output to the built-in speaker through connector CN1701.
Speaker
Figure 2-17. Speaker
The following diagram illustrates the circuits that control the speaker.
Audio input port
J100
IC1700 Audio Amp Volum up/down Mute IC501
CN1701
Speaker
Figure 2-18. Speaker Control Circuit Block Diagram
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2-15
Revision:B
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2.8 Temperature Control
2.8.1 Sensors and Switches
This projector is equipped with the devices shown in the table below in order to protect the safety of the operator and maintain general safety with regard to the projector itself by preventing abnormalities in operation. Table 2-3.
Sensor/Switch Location Function
Lamp lid detection switch On the Exhaust Duct Inner
TH board
On the Exhaust Duct Inner
Safety Switch
On the side of the Exhaust Duct Inner
Interrupts AC power when the lamp lid is opened. Power cannot be turned on until the lid is closed. Prevents overheating around the Lamp Assy. Turns the lamp off when a temperature rises above a certain level. Prevents overheating around the Lamp Assy. Interrupts the AC power when a temperature rises above a certain level.
Lamp Lid Detection Switch This switch is located on the Inner Exhaust Duct and connected to the lamp lid latch on the inside base of the projector, and prevents current from going to the lamp if the lamp lid is open. This lid is opened only when the operator is replacing the Lamp Assy. The switch is provided in order to prevent the danger of burns that could occur if the lamp turned on accidentally. The lamp lid detection switch is connected to CN900 on the MA board. When the lamp lid opens, IC501 (IFCPU) detects the lamp lid open signal and sends the Lamp OFF signal to turn off the lamp.
Lamp Lid Detection Switch
Figure 2-19. Lamp Lid Detection Switch
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TH Board The TH Board is attached to the Inner Exhaust Duct to detect the temperature of the lamp section. To prevent damage to the surrounding components from overheating, the power save controller on the MA board first provides a warning indication through the temperature indicator LED, and stops the output of the ballast when the temperature rises above a given level.
TH Board
Figure 2-20. TH Board
Safety Switch This is a backup overheating prevention switch mounted on the side of the Inner Exhaust Duct. If overheating occurs around the Lamp Assy. due to problems with the exhaust fan, the lamp is normally turned off by the TH Board to prevent overheating. The Safety Switch is provided as a backup in case the TH Board and temperature detection circuit fail simultaneously. When the temperature rises above a given level, the safety switch interrupts AC power to stop all regular operations. Once the safety switch is activated, power cannot be switched on again until the temperature falls below the given level.
Safety Switch
Figure 2-21. Safety Switch
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2-17
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Thermistor and Temperature Sensor Operation Analog/Digital converters in IC702 and IC703 (V850) on the MA board detect the temperatures of the Optical Engine and Power Supply sections by means of the two Lamp Thermistors at intervals of 1 second. Based on the measurement results, the CPU controls fan operations and power supply shutdown operations as necessary. Table 2-4. Temperature Sensors
Condition Warning Indicator Meaning
Normal temperature Warning temperature Abnormal temperature Internal error
Off Flashes orange Steady red Flashes red
Normal operation in progress If temperature rises any higher, projection stops. Overheating (no projection) Problem with fans, thermistors or temperature detection circuit
See Section 2.8.2 for more information on fan operation, and Section 2.9 for more information on the LED status indicators.
2.8.2 Fan Operation
There are four cooling fans inside the projector. These fans discharge heated air produced by the Lamp Assy., power supply unit, and ballast unit.
Intake fan 1 Intake fan 2
Power Supply Fan
Exhaust Fan
Figure 2-22. Fan Locations
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2-18
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PW164B IC300
M62334 IC1001 AO1 AO2 AO3 AO4
I2C bus
PW bus
Intake Fan 1 FANDET0
PISCES2 IC501
FVALV FANON1 Intake Fan 2 FANDET1
V850 IC702, 703 P32 P33 P35 P36 P37
Exhaust Fan FVAEXT FANON2 FANDET2
V850 bus
BGPA0 BGPB6 BGPB7 BGPB4
Power Supply Fan FVAPWR FANON3 FANDET3 FANCTL2 FANCTL1
BGPD1 BGPD0
Figure 2-23. Fan Control Circuit Block
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2-19
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Operation Control The MA board is connected to the Lamp Thermistor. The driver CPU controls the operation of the four fans, Intake fan 1, Intake fan 2, Exhaust fan and Power Supply fan, based on the temperatures detected by the thermistor. The signals output by IC1100, the driver CPU on the MA board, are used to change the output from the fan drive regulator circuit on the MA board in order to control Intake and Exhaust fans. The feedback signals from the fans are used by the CPU to monitor the fan operation (stopped or running) for any abnormalities. If the feedback signal indicates a condition that the CPU does not expect, the CPU determines that there is an abnormality in the operation of the fan and immediately turns off the lamp and causes the warning indicator to light red. Fan Operation Standby Mode Intake Fan (LV/G FAN): Intake Fan (LV/R FAN): Exhaust Fan: Operates at a constant speed from power-on. The rotating speed is adjusted according to preset temperatures detected by the thermistor. Turns on the power supply fan and starts to operate at low speed when the thermistor detects temperatures higher than a given level, and stops when the temperature becomes lower than the level.
When the Lamp is ON The intake and exhaust fans start to operate at low speed 0.5 seconds before turning the lamp on. After the lamp turns on, the fan operates at high speed or low speed based on the temperatures detected by the thermistor. During Cool-down When the lamp is turned off, the fans operate for a few seconds to cool the projector.
SEIKO EPSON
2-20
Revision:B
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2.9 LED Indicators
The MA board has three LEDs that indicate the operating status of the projector. The status indicators are located on the upper case unit.
Temp indicator
Lamp indicator
Power indicator
Figure 2-24. Status Indicator LEDs Location
The following tables show what the indicators mean and how to remedy any problem indicated. Power indicator lights red: Abnormal On Blink Off
Indicator Status
Power Red Red Red
Projector Status
Problem and Remedy
Internal error
Stop using the projector, disconnect the power cable from the electrical outlet, and contact your dealer or the nearest address provided in the "International Warranty Conditions" section of the Safety Instructions/ World-Wide Warranty Terms booklet.
Power
Red
Red
Power
Red
Red
Fan related error Stop using the projector, disconnect the power cable Sensor error from the electrical outlet, and contact your dealer or the nearest address provided in the "International Warranty Conditions" section of the Safety Instructions/WorldWide Warranty Terms booklet. Internal temper- The lamp will turn off automatically and projection will ature error stop. Wait for about 5 minutes. After about 5 minutes (overheating) the projector will switch to standby mode, so check the following two points. · Check that the air filter and air exhaust vent are clear, and that the projector is not positioned against a wall. · If the air filters are blocked, clean or replace them. If this does not solve the problem and the projector continues to overheat or the indicators continue to show a problem when the power is turned on, stop using the projector, disconnect the power cable from the wall outlet, and contact your dealer or the nearest address provided in the "International Warranty Conditions" section of the Safety Instructions/World-Wide Warranty Terms booklet. After checking, press the [Power] button to turn the power back on.
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2-21
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Indicator Status
Power Red Red
Projector Status
Problem and Remedy
Take out the lamp and check if it is broken. If the lamp is not broken, put it back in and then turn the power on. If the lamp still does not turn on, replace it with a new lamp. If this does not solve the problem, stop using the projector and disconnect the power cable from the electrical outlet. Then contact your dealer or the nearest address provided in the "International Warranty CondiLamp timer fail- tions" section of the Safety Instructions/World-Wide ure Lamp out Warranty Terms booklet If the lamp is broken replace it with a new lamp, or contact your local dealer for further advice to. If replacing the lamp yourself, be careful to avoid pieces of broken glass. (Projection cannot be carried out until the lamp is replaced.) Check that the lamp and the lamp cover are securely installed. If the lamp or lamp cover is not securely installed, the lamp will not switch on.
Lamp or Temp indicator flashes orange: Warning On
Indicator Status
Power Red
Blink
Off
Projector Status
Problem and Remedy
High-speed cooling in progress
Orange
Power Orange
Lamp replacement notification
This is not an abnormality, but if the temperature rises too high again, projection will stop automatically. · Check that the air filters and air exhaust vent are clear and that they are not up against a surface such as a wall. · If the air filters are clogged, clean or replace them. Replace the lamp with a new one. If you continue to use the lamp after it has passed the replacement period, the possibility that the lamp may break will increase. Replace the lamp with a new one as soon as possible. The Power indicator status will vary depending on the projector status at the time.
SEIKO EPSON
2-22
Revision:B
Chapter 3 Troubleshooting
EMP-S3
3.1 Before Carrying Out Troubleshooting
· If repairs involving the replacement of parts or components have been carried out, always be sure to re-check whether the replacement parts themselves are operating correctly or not in order to determine whether the problem is the result of something such as a loose connector. · All instructions and procedures listed in troubleshooting flowcharts should be carried out as given. · Follow the procedures given in Chapter 4 Disassembly and Assembly when replacing any of the projector components. · When checking the operation of the projector, always check that the connectors are connected securely before proceeding to other checks. · In order to confirm proper operation, use AC power from a normal source and use the correct cable type.
3.1.1 Troubleshooting Tools and Equipment
The following tools and equipment will be required in order to carry out troubleshooting, and so you should check that they are on hand. Table 3-1.
Name Quantity Application/Other
Projection screen Tape measure (3 m) Host computer USB mouse Video equipment Multi meter Double-sided tape General tools
1 1 1 1 1
Projecting images Measuring projection distances Transmitting audio and image data Checking the operation of the mouse Transmitting audio and image data
Measuring resistance values and voltages (AC/DC) 1 Short length Attaching parts 1 set Tools and equipment listed in Section 4.1.2
3.1.2 Field Replacement Parts
Many of the components that comprise a service unit have each been adjusted in relation to each other. Therefore, when replacing parts during troubleshooting or repair, do not disassemble service units in order to harvest and use constituent components. This is especially critical for the components in the optical engine (Light Guide Unit, Prism Unit and Light Valves) and the MA Board. Carry out the safety tests after parts replacement is completed.
SEIKO EPSON
3-2
Revision:B
EMP-S3
3.2 Overview
Check the nature of the problem using the following flow diagram, and then proceed to the corresponding flow chart (on the following pages).
START
Exterior Check
· Check for any external abnormalities, such as a damaged case.
Internal Cable Check
· Remove the Upper Case unit and check the cable connectors on the MA Board. Reconnect any loose cables as required.
Power Supply On/Off
· Connect the power cord and turn on the power. Check the initial operations until the NO SIGNAL message appears, and then check the power off operation. 1). After power is turned on, the Power indicator flashes green and projection starts. 2). After about 40 seconds, the operation indicator lights green, and projection starts at maximum brightness.
Image Display and Quality
· Carry out the following three steps. 1). Check and adjust the projector's Front Feet as appropriate for the projection position and distance. 2). Adjust the image using the Focus Ring. 3). Press the [Auto] button to optimize the display. · Display input/output and image quality. Use the [Source] and [Enter] buttons to change input. Check the quality of input and output signals from Computer/Component Video, SVideo and CVBS sources. · Check that there are audio inputs from Computer/Component Video, S-Video and CVBS. Also check the operation of the [AV Mute] button.
Audio Output
Control Panel
· Test the operation of each button on the control panel.
Remote Control
· Test the operation of each button on the remote control.
USB Mouse
· USB mouse operations using USB interface.
Other
· Examine the unit for abnormal noise, image problems, unusual odors, and smoke.
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3-3
Revision:B
EMP-S3
3.2.1 Exterior Check
START
Upper Case Unit
· There should be no damage, deformation or cracking due to external force. · The Lower Case should be installed correctly. · The remote signal receiver should be clean and free from foreign materials.
Control Panel
· The Upper Case should be correctly installed. · No buttons should be stuck down.
Projection Lens Unit
· The Focus Ring should turn smoothly. · The Lens should be clean and free from damage.
Lower Case
· There should be no damage, deformation or cracking due to external forces. · The vent hole should be clean and free from any foreign materials.
Air Filter
· The Air Filter should be installed correctly. · Remove the Air Filter from the Lower Case to check that it is clean · The Intake Fan inside the Air Filter frame should be clean and free from foreign materials.
Lamp Lid Unit
· The Lamp Lid should be securely attached to the Lower Case. · The Lamp Lid Detection Switch latch should be free from damage.
Lamp Assy
· The plastic frame should be free from any deformation, damage or discoloration from heat. Remove the lamp inner unit to check. · The power supply connector should be free from discoloration. · The white glass surface of the lamp should be clean.
Adjustable Front Foot Unit
· Can the projection height be adjusted with the Foot Unit?
Interface Connectors
· The connectors and terminals should not be bent or discolored. · The connectors and terminals should be free from foreign materials.
AC Inlet
· The AC connectors should not be discolored. · The AC source socket should be free from damage.
Air Filter/Lamp Assy Installation
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3.2.2 Internal Cable Check
Turn off the power and disconnect the power cable before you begin the following connector checks. See Figure 2-2 on page 2-3 for the location of the MA Board connectors.
START
Upper Case Unit Removal
Control Panel
· MA Board CN903 (Lock-type connector) · MA Board CN1004 · MA Board CN1001 · MA Board CN620 · MA Board CN1002, CN1003 · MA Board CN1300/CN1400/CN1500 (Lock-type connector) · MA Board CN1000 · MA Board CN2000, CN901 · MA Board CN1005 · MA Board CN900
Exhaust Fan
LAMP Themistor
RC Board
Intake Fan 1, 2
Light Valve R/G/B
L/V Thermistor
Power Supply Ballast Unit
Power Supply Fan
Lamp Lid Detection Switch
Lamp Fan
· MA Board CN1006
MA Board Removal
Speaker
· MA Board CN1701
MA Board Installation
Upper Case Unit Installation
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EMP-S3
3.2.3 Power Supply On/Off
START
Power cord connection
Is the orange?
indicator lit
Yes
No
Replace the Power Supply Ballast Unit
No
Press the [Power] button on the control panel. Does the indicator flash green?
Yes
Press the [Power] button on the remote control.
Does the indicator flash green?
Yes
No
Replace tha Optical Engine and the MA Board.
Reconnect or replace the control panel.
To START
To START
Does the indicator flash green?
Yes
No
Refer to "2.9 LED Indicators" on page 2-21.
A
(To next page)
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(Continued from previous page) A
No
Is the lamp turned on?
Yes
Replace the Optical Engine and MA Board.
Press the [Power] button to turn the power off.
Does the indicator flash orange?
Yes
No
Replace the Optical Engine and MA Board.
Does the indicator light orange after it flashes for approx. 2 seconds?
Yes
No
Replace the Optical Engine and MA Board.
Image Display and Quality
Remedy For Power Supply Problems 1. Determine whether the problem is being caused by components inside the power supply unit, or whether it is being caused by some external factor. To determine this, check factors such as output voltage, internal temperature, appearance of components, odors and smoke. 2. If the cause is judged to be an internal problem, replace the power supply unit. If the newlyreplaced power supply unit also has a problem and the symptoms are the same as before, then the cause of the problem is probably some external factor. Eliminate the external factor that is causing the problem. 3. If the power supply unit is recoverable but is not working properly, for example if high temperatures are causing the thermostat to shut down the power supply, or if the overcurrent protection circuit has tripped, then there is no need to replace the power supply unit. 4. If the power supply unit is not recoverable and is not working properly, for example if an overcurrent has repeatedly blown the fuse, replace the power supply unit.
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3.2.4 Image Display and Quality
C A U T IO N
The image quality can also be affected by condensation or by a dirty lens. If condensation forms, the problem will correct itself naturally if the projector is left to stand for a while.
START
Press the [Power] button to turn the power on.
Does "NO SIGNAL" appear in the bottom-left of the screen?
No Yes
Yes
Does an image appear on the screen?
No Yes
1. Adjust the height using the front adjustable foot. 2. Press the [ ] or [ ] button to correct distortion. 3. Adjust the focus with the Focus Ring.
Yes
Is the lamp turned on?
No
Replace the Optical Engine and MA Board
Does the image appear clearer?
No
Replace the Lamp Assy. Clean the Projection Lens.
Yes
Is the lamp turned on?
No Yes
Replace the Optical Engine and MA Board
Does the image appear clearer?
No
Clean the areas around the Light Valves.
Yes
Does the image appear clearer?
No
Replace the Optical Engine and MA Board
B (To next page)
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3-8
Revision:B
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(Continued from previous page) B C
Connect the host computer to the Computer connectors and display an image.
Yes
Is the image quality good?
No
Connect external devices to all the interfaces.
No
Yes
Does an image appear on the screen?
No
Yes
1. Press the [Menu] button. 2. Select the "Image" menu. 3. Adjust the brightness and contrast.
Connect a source to the interface to be checked.
Press the [Source] button to change the display to Computer.
Yes
Is the image quality good?
No
C
Does an image appear on the screen?
No
Yes
Replace the Optical Engine and MA Board Audio Output
Replace the computer cable.
Does an image appear on the screen?
No
Yes
Replace the Optical Engine and MA Board
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3.2.5 Audio Output
START
Connect the audio input connector and host computer. Press the [Source] button to select the corresponding input source, and output sound from the internal speaker.
Can the volume be adjusted?
No
Yes
Replace the Optical Engine and MA Board
Is sound output from the built-in speaker?
No
Yes
Can the audio output be started and stopped using the [AV Mute] button?
No
Yes
Reconnect CN1701 on the MA board
Replace the Optical Engine and MA Board
Is sound output from the built-in speaker?
No
Yes
Control Panel
Replace the audio cable.
Is sound output from the built-in speaker?
No
Yes
Replace the speaker unit.
Is sound output from the built-in speaker?
No
Yes
Replace the Optical Engine and MA Board
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3-10
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EMP-S3
3.2.6 Control Panel
START
Does pressing the [Power] button turn the power on and off?
Yes
No
Does pressing the [Menu] button display the menu?
Yes
No
Does pressing the [Source] button switch the input source?
Yes
No
Does pressing the [Help] button show the explanation display?
Yes
No
Does pressing the [Enter] button change the menu item?
Yes
No
Does pressing the [ ] or [ correct keystone distortion?
Yes
] buttons
No
Does pressing the [TELE] or [WIDE] buttons change the image size?
Yes
No
Reconnect CN903 on the MA board
Yes
Do all switches function normally?
No
Replace the control panel.
Yes
Do all switches function normally?
No
Replace the Optical Engine and MA Board
Remote Control Operation
SEIKO EPSON
3-11
Revision:B
EMP-S3
3.2.7 Remote Control Operation
START
Yes
Can the power be turned on and off using the remote control?
No
Yes
Do all buttons operate normally?
No
Does the remote control work 20 ft. (6 m) away from the front or rear of the projector?
No
Yes
Replace the remote control battery.
Replace the remote control.
Replace the remote control battery.
Yes
Do all buttons operate normally? Can the power be turned on and off using the remote control?
No Yes No
Does the remote control work 20 ft. (6 m) away from the front or rear of the projector?
No
Yes
Replace the Optical Engine and MA Board
Replace the remote control.
Replace the remote control.
Can the power be turned on and off using the remote control?
No
Yes
Does the remote control work 20 ft. (6 m) away from the front or rear of the projector?
No
Yes
Replace the Optical Engine and MA Board
Replace the Optical Engine and MA Board
Other
SEIKO EPSON
3-12
Revision:B
EMP-S3
3.2.8 Other
START
Yes
Is the projector making abnormal noise?
No
· Check for any objects around the Exhaust Fan, Intake Fan and Power Supply Fan. · The cause might be a malfunction of the power supply unit (pulse transformer vibration, etc.).
Yes