Epson EMP-S3 Service Manual Page 1

Service ManualData ProjectorEMP-S3

0-10EMP-S3SEIKO EPSON Revision:B3. NECESSARY REQUIREMENTS FOR SERVICE TECHNICIANSService technicians who carry out repairs and servicing work on the E

0-11EMP-S3SEIKO EPSON Revision:BChapter 1 Product Specifications1.1 Product Features ...

0-12EMP-S3SEIKO EPSON Revision:BChapter 4 Disassembly/Assembly4.1 Overview...

Chapter 1 Product Specifications

1-2EMP-S3SEIKO EPSON Revision:B1.1 Product FeaturesThe EMP-S3 is a B4-sized portable projector that is the smallest and lightest in its class. It offe

1-3EMP-S3SEIKO EPSON Revision:BAutomatic Incoming Signal Detection FunctionThe Search button on the remote control and the Source Search button on the

1-4EMP-S3SEIKO EPSON Revision:B1.2 Components, Connectors and Switches1.2.1 External ComponentsFigure 1-1. Main Unit FrontFigure 1-2. Main Unit Bottom

1-5EMP-S3SEIKO EPSON Revision:BFigure 1-3. Input and Output ConnectorsFigure 1-4. Control PanelComputer portMonitor Out portRear adjustable footS-Vide

1-6EMP-S3SEIKO EPSON Revision:B1.2.2 Internal ComponentsFigure 1-5. Major Internal ComponentsControl PanelMA BoardLamp Assy.Optical EngineSpeakerIF un

1-7EMP-S3SEIKO EPSON Revision:B1.2.3 Remote ControlFigure 1-6. Remote Control[] buttonWhen a configuration menu or help menu is displayed, the button

0-2EMP-S3SEIKO EPSON Revision:BINTRODUCTIONThis Service Manual describes the hardware information necessary for troubleshooting and field service of t

1-8EMP-S3SEIKO EPSON Revision:B1.3 SpecificationsProjection System RGB Liquid Crystal Shutter ProjectionProjection Method Front/Rear/Ceiling MountSpec

1-9EMP-S3SEIKO EPSON Revision:BAnalog RGB I/ODisplay PerformanceNative 800 x 600 dotsInput SignalSignal Type Separate signalVideo Signal Analog (0.7 V

1-10EMP-S3SEIKO EPSON Revision:B1.4 Interface SpecificationsFigure 1-7. 1.4.1 Computer Port Mini D-sub, 15 pin (input) Mini D-sub, 15 pin (output)CN

1-11EMP-S3SEIKO EPSON Revision:B1.4.2 USB Interface USB-Type B1.4.3 S-Video Interface Mini DIN4 pinCN1600UBB-4R-D14CPin No. Signal Name1VBUS2D-3D+4

1-12EMP-S3SEIKO EPSON Revision:B1.4.4 Audio Input Interface/CVBS Input Interface Stereo mini pin jackJ100YKC21-4098NPin No. Signal Name1CVBS2 GND3L4

1-13EMP-S3SEIKO EPSON Revision:B1.5 External ViewsFigure 1-8. External Dimensions/OO 

1-14EMP-S3SEIKO EPSON Revision:BFigure 1-9. External Dimensions 

Chapter 2 Theory of Operation

2-2EMP-S3SEIKO EPSON Revision:B2.1 Hardware OverviewThe hardware for the EMP-S3 can basically be divided into two sections: the optical engine and the

2-3EMP-S3SEIKO EPSON Revision:B2.1.1 Component Connection DiagramThe connectors for the components and Main (MA) board are shown in the following diag

0-3EMP-S3SEIKO EPSON Revision:BPRECAUTIONSSome procedures require specific precautions that must be followed, and those will be noted throughout this

2-4EMP-S3SEIKO EPSON Revision:B2.1.2 Control CircuitryThe control circuits are illustrated in the following block diagram.Figure 2-3. Control Circuit

2-5EMP-S3SEIKO EPSON Revision:B2.2 Optical EngineThe optical system consists of four components: the Lamp Assys., the Light Guide Unit, the Panel-on-P

2-6EMP-S3SEIKO EPSON Revision:BC H E C KP O I N TThe Lamp Assy., Light Guide Unit, POP Unit, and Projection Lens together make up the Optical Engine.

2-7EMP-S3SEIKO EPSON Revision:B2.2.1 Lamp Assy.The Lamp Assy. is comprised of the Lamp (UHE-135W) and Ballast Power Supply Connector. The Ballast Powe

2-8EMP-S3SEIKO EPSON Revision:B2.3 MA BoardThe MA board processes the core circuit controls for the projector, including interface control, operation

2-9EMP-S3SEIKO EPSON Revision:B2.3.2 Overview of OperationDigitalization control of the picture signalConverts the analog RGB image signals input from

2-10EMP-S3SEIKO EPSON Revision:B2.4 Interface ConnectorsThe MA board includes interface connectors for external devices such as video equipment. The M

2-11EMP-S3SEIKO EPSON Revision:B2.5 Power Supply Ballast UnitThe Power Supply Ballast Unit contains the power supply/ballast section, power supply fil

2-12EMP-S3SEIKO EPSON Revision:B2.5.2 Overview of OperationThe output cable of the power supply unit is connected to CN2000 on the MA board. It allows

2-13EMP-S3SEIKO EPSON Revision:B2.5.3 Connector CN2000 Pin LayoutFigure 2-14. Power Supply Connector (connected to CN2000 on the MA board) Pinout Defi

0-4EMP-S3SEIKO EPSON Revision:BManual Revision HistoryService memoMake a note here of important technical information from Technical Information bulle

2-14EMP-S3SEIKO EPSON Revision:B2.6 RC Board AssemblyThe Remote Control (RC) board is equipped with sensors that detect (receive) infrared signalstran

2-15EMP-S3SEIKO EPSON Revision:B2.7 SpeakerThe projector has a single 1 W built-in speaker that is at the rear of the projector. It can be used for mo

2-16EMP-S3SEIKO EPSON Revision:B2.8 Temperature Control2.8.1 Sensors and SwitchesThis projector is equipped with the devices shown in the table below

2-17EMP-S3SEIKO EPSON Revision:BTH BoardThe TH Board is attached to the Inner Exhaust Duct to detect the temperature of the lamp sec-tion. To prevent

2-18EMP-S3SEIKO EPSON Revision:BThermistor and Temperature Sensor OperationAnalog/Digital converters in IC702 and IC703 (V850) on the MA board detect

2-19EMP-S3SEIKO EPSON Revision:BFigure 2-23. Fan Control Circuit BlockPW164B IC300M62334 IC1001AO1AO2AO3AO4PISCES2IC501Intake Fan 1Intake Fan 2FANDET0

2-20EMP-S3SEIKO EPSON Revision:BOperation ControlThe MA board is connected to the Lamp Thermistor. The driver CPU controls the operation of the four f

2-21EMP-S3SEIKO EPSON Revision:B2.9 LED IndicatorsThe MA board has three LEDs that indicate the operating status of the projector.The status indicator

2-22EMP-S3SEIKO EPSON Revision:B Lamp or Temp indicator flashes orange: Warning On Blink OffLamp timer fail-ure Lamp outTake out the lamp

Chapter 3 Troubleshooting

0-5EMP-S3SEIKO EPSON Revision:BSAFETY INSTRUCTIONS1. MAINTAINING OPERATOR SAFETY1. PREVENTING ELECTRIC SHOCKS• Turn off the power switch and disconnec

3-2EMP-S3SEIKO EPSON Revision:B3.1 Before Carrying Out Troubleshooting• If repairs involving the replacement of parts or components have been carried

3-3EMP-S3SEIKO EPSON Revision:B3.2 OverviewCheck the nature of the problem using the following flow diagram, and then proceed to the corresponding flo

3-4EMP-S3SEIKO EPSON Revision:B3.2.1 Exterior CheckSTARTUpper Case Unit • There should be no damage, deformation or cracking due to external force.• T

3-5EMP-S3SEIKO EPSON Revision:B3.2.2 Internal Cable CheckTurn off the power and disconnect the power cable before you begin the following connector ch

3-6EMP-S3SEIKO EPSON Revision:B3.2.3 Power Supply On/OffSTARTPower cord connectionIs the indicator lit orange?NoReplace the Power Supply Ballast Uni

3-7EMP-S3SEIKO EPSON Revision:BRemedy For Power Supply Problems1. Determine whether the problem is being caused by components inside the power supply

3-8EMP-S3SEIKO EPSON Revision:B3.2.4 Image Display and QualityC A U T I O N The image quality can also be affected by condensation or by a dirty lens

3-9EMP-S3SEIKO EPSON Revision:B(Continued from previous page) B Connect the host computer to the Computer connec-tors and display an image.Is the im

3-10EMP-S3SEIKO EPSON Revision:B3.2.5 Audio OutputSTARTConnect the audio input connector and host computer. Press the [Source] but-ton to select the c

3-11EMP-S3SEIKO EPSON Revision:B3.2.6 Control PanelSTARTDoes pressing the [Power] button turn the power on and off?NoYesDoes pressing the [Menu] butto

0-6EMP-S3SEIKO EPSON Revision:B2. MAINTAINING THE PROJECTOR IN GOOD CONDITION1. PREVENTING STATIC ELECTRICAL DAMAGE• When disassembling and assembling

3-12EMP-S3SEIKO EPSON Revision:B3.2.7 Remote Control OperationSTARTYesCan the power be turned on and off using the remote control?YesDo all buttons op

3-13EMP-S3SEIKO EPSON Revision:B3.2.8 OtherSTARTYesIs the projector making abnor-mal noise?• Check for any objects around the Exhaust Fan, Intake Fan

Chapter 4 Disassembly/Assembly

4-2EMP-S3SEIKO EPSON Revision:B4.1 OverviewThis chapter describes the procedures for disassembling and assembling the main components of the EMP-S3 pr

4-3EMP-S3SEIKO EPSON Revision:BW A R N I N G No work should be performed on the unit by persons unfamiliar with basic safety measures as dictated for

4-4EMP-S3SEIKO EPSON Revision:B4.1.2 Tools and EquipmentThe tools and equipment in the following table will be needed. All are commercially available,

4-5EMP-S3SEIKO EPSON Revision:BPoints to Note When WorkingDetailed points to note are given in each section, so be sure to read each section thoroughl

4-6EMP-S3SEIKO EPSON Revision:B4.2 Projector Disassembly and AssemblyThe general disassembly procedure for the EMP-S3 projectors is illustrated below.

4-7EMP-S3SEIKO EPSON Revision:BThe table below shows the part names used in this chapter and their official names given in the After Service Part List

4-8EMP-S3SEIKO EPSON Revision:B4.2.1 Removing the Model Name PlateRemove the EMP-S3 Model Name Plate.4.2.2 Removing the Lamp Lid Assy and Lamp Assy.1.

0-7EMP-S3SEIKO EPSON Revision:B Testing procedureCarry out testing in the order given below. Testing methods1). Insulation resistance test• Testing

4-9EMP-S3SEIKO EPSON Revision:B4.2.3 Removing the Lens Cap Unit1. Remove the string that attaches the Lens Cap Unit to the projector body to take off

4-10EMP-S3SEIKO EPSON Revision:B4.2.5 Removing the Front Foot Unit1. Press a screwdriver or similar tool into the small slot beside the Front Foot Uni

4-11EMP-S3SEIKO EPSON Revision:B4.2.7 Removing the Upper Case1. Remove the 7 (C.B.P-TITE, 3x10, F/ZB-3C) screws that secure the Upper Case Unit.Figure

4-12EMP-S3SEIKO EPSON Revision:B3. Unlock connector CN903 on the MA Board and then disconnect the Control Panel Cable.Figure 4-9. CN903LockedUnlocked

4-13EMP-S3SEIKO EPSON Revision:B4.2.8 Removing the RC Filter, Upper Cushion, PS Cushion, SW1 Light Shade Sheet, SW Board Assy, SW Cable, and Upper Cas

4-14EMP-S3SEIKO EPSON Revision:BC A U T I O N When attaching the Upper Case Sheet to the Upper Case, follow the instruction below.1). Attach the two

4-15EMP-S3SEIKO EPSON Revision:BC A U T I O N After connecting the SW Cable, aslant to fold and secure it with a piece of heat resistant tape as show

4-16EMP-S3SEIKO EPSON Revision:B4.2.9 Removing the MA Board Assy.1. Unlock the connectors of the Light Valve R/G/B connection cables.Figure 4-14. 2. D

4-17EMP-S3SEIKO EPSON Revision:B3. Remove the (C.C., 3x6, F/ZN-3C) screw to remove the MA Board Assy.Figure 4-16. C A U T I O N When installing the M

4-18EMP-S3SEIKO EPSON Revision:BC A U T I O N2). Route the Power Supply Fan Cable as shown in Figure 4-18, and press into the cable under the MA Board

0-8EMP-S3SEIKO EPSON Revision:B2). Ground continuity check• Testing apparatus: Multimeter (with sensitivity down to 0.1 Ω)• Multimeter settings3). Ill

4-19EMP-S3SEIKO EPSON Revision:BC A U T I O N4). Route the power cord as shown in Figure 4-20, and secure the cable with a heat-resistant tape. Gently

4-20EMP-S3SEIKO EPSON Revision:B4.2.10 Removing the IF Case Set, RC Filter and SW2 Light Shade Sheet1. Remove the SW2 Light Shade Sheet from the IF Ca

4-21EMP-S3SEIKO EPSON Revision:B4.2.11 Removing the MA Plate1. Remove the 2 (C.B.P-TITE, 3x10, F/ZB-3C) screws that secure the RCA connector, the (C.B

4-22EMP-S3SEIKO EPSON Revision:B4.2.12 Removing the Optical Engine1. Remove the 4 (C.B.P-TITE, 3x10, F/ZB-3C) screws that secure the Optical Engine, a

4-23EMP-S3SEIKO EPSON Revision:B4.2.14 Removing the Projection Lens Unit1. Remove the 4 (C.P.(S-P1), 3x10, F/ZN-3C) screws that secure the Projection

4-24EMP-S3SEIKO EPSON Revision:B4.2.15 Removing the RC Board Assy, Cable RCR, Safety Switch, Intake Duct, Intake Fan (BG0703-B044), and Intake Fan (BG

4-25EMP-S3SEIKO EPSON Revision:BC A U T I O N Route the AC Inlet Cable as shown in the figure below, and secure the ferrite core on the tab of the Lo

4-26EMP-S3SEIKO EPSON Revision:B4.2.16 Removing the Exhaust Fan Assy, Fan 80, and Outer Exhaust Duct1. Remove the (C.B.P-TITE, 3x10, F/ZB-3C) screw th

4-27EMP-S3SEIKO EPSON Revision:B2. Remove the 2 (C.B.P-TITE, 3x30, F/ZN-3C) screws that secure Fan 80, and remove the Outer Exhaust Duct from the Exha

4-28EMP-S3SEIKO EPSON Revision:B4.2.17 Removing the TH Board Assy, Cable Assy RC, Lamp Cover Detection Switch, and Inner Exhaust Duct1. Remove the (C.

0-9EMP-S3SEIKO EPSON Revision:B Other• Check that the connectors at both ends of the power cord are not dirty or bent, and clean them if they are dir

4-29EMP-S3SEIKO EPSON Revision:B4.2.18 Removing the Power Supply Assy.1. Remove the heat-resistant tape that secures the Power Supply Cable.2. Remove

4-30EMP-S3SEIKO EPSON Revision:B4.2.19 Removing the Lamp Shield Plate and Lower Case1. Remove the Lamp Shield Plate from the Lower Case.Figure 4-34. L

Chapter 5 Appendix

5-2EMP-S3SEIKO EPSON Revision:B5.1 AS (After Service) MenuThe AS (After Service) menu provides information and settings that are not displayed on the

5-3EMP-S3SEIKO EPSON Revision:B When the video source is S-Video or Video, the following screen is displayed.5.1.2 Initializing (Resetting) the AS Me

5-4EMP-S3SEIKO EPSON Revision:B5.1.3 Software DIP SwitchesSome software DIP-switch settings are only accessible from the AS menu. To display the DIP-S

5-5EMP-S3SEIKO EPSON Revision:BIn order to affect a DIP-SW setting change, turn off the Power button and cool down. Thenew settings are in effect as s