Optoma EP732B User manual

Model Name : EP732B
SERVICE MANUAL
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Prepared by SI :
________________________________________
Prepared by TSE :
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Check by :
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Approved by :
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Copyright February, 2004 . All Rights Reserved
Document #80V-G04-01A . P/N: 36.80V01.001

ThismanualisappliedtoEP732B0.55”DMDSVGA Projector with digital imaging functionality basedon
DigitalMicro-mirrorDevice(DMD)technology. It’s themode ofsingle Panel,200watt lamp and800(H)
x 480(V) resolution. Themanualgivesyouabriefdescriptionofbasictechnicalinformationtohelpin
serviceandmaintainingtheproduct.
Yourcustomerswillappreciatethequickresponsetimewhenyouimmediatelyidentifyproblemsthatoccur
withour products. We expect your customerswill appreciatetheservice that you offerthem.
This manual is for technicians and people who have an electronic background. Send the product back to
thedistributor forrepairingand do not attemptto do anything that is complexor isnot mentionedin the
troubleshooting.
NOTICE:
Theinformationfoundinthismanualissubjecttochangewithoutpriornotice.Anysubsequentchanges
made tothe data hereinwillbeincorporated infurtheredition.
Copyright2004, February
AllRightsReserved
ManualVersion1.0
Document # 80V-G04-01A
Preface
EP732BI

EP732BII
Table of Contents
Chapter 1 Introduction 1-1
Product Highlights 1-1
Machanical Specifications 1-2
Electrical Specifications 1-2
Optical Specifications 1-3
Environmental Specifications 1-4
Chapter 2 Disassembly Procedure 2-1
RemovingTop Cover and I/O Panel 2-1
Removing Lamp Cover and Lamp Module 2-2
Removing Main Board 2-3
Removing LampDriver 2-4
Removing Blower Fan and Front Fan 2-5
Removing LVPS Module 2-6
Removing Engine Module 2-7
Disassembly Engine Module (Part I) 2-9
Disassembly Engine Module (Part II) 2-10
Chapter 3 Troubleshooting 3-1
EquipmentNeeded 3-1
Main Procedure 3-1
Chapter 4 Function Test and Alignment Procedure 4-1
EquipmentNeed 4-1
Test Condition 4-1
TestDisplay Modes & Pattern 4-2
Inspection Procedure 4-5
Chapter 5 Firmware Upgrade Procedure 5-1
EquipmentNeeded 5-1
Setup Procedure 5-1
InstallationProcedure 5-2
Firmware Upgrade Procedure 5-8
Chapter 6 DDC Key-in Procedure 6-1
EquipmentNeeded 6-1
Setup Procedure 6-2
DDC Key-in Procedure 6-3
Appendix A Serial Number System Definition 7-1
Reader’s Response 7-2

EP732B1-1
Chapter 1
Introduction
1-1 Product Highlights
- One panel 0.55"DMDSVGAprojection system with 1150ANSI lumens (Typical), 1030
ANSIlumens(Minimum)(Philips/Phoenix200WLamp)
- Highefficiencycoolingsystemwithlowsystemacousticnoiselevel
- Lightweight5.0lbs.
- True 800 * 600 resolution, 16.7M True colors
- With up,down, left,and right screen reverse
- Build-infull screenNTSC/ PAL/ SECAMvideo capabilitywith S-video/ Composite/
ComponentandHDTVterminals
- SXGA/ XGA/SVGA/VGA/ MACcompatibility withoneD-subinput terminal
- Autoimage re-sizingto 800* 600full screen
- Manualfocus1:1.2zoomlens
- Autodetectionofcomputersignalinput
- AutoImagesynchronization(Auto-tracking/frequency/positionadjustment)
- Powerfulenlargeandfreezefunction
- Automaticallysavesadjustmentsforfutureuse
- On-screenmenuwith 10languages
- Built-inone 2W speaker
- IRremotecontrolwithout USB mouse functionand laserpointer
- Adaptivevoltagecontrolfanspeed
- Autosourceoption forstable displayfromfixed source (whendisabled)
- Monitorloopthrough
- ECO mode supports

EP732B1-2
1-2 Mechanical Specifications
Dimensions(LxWxH) - External 10.7*8.3*3.4 +/-0.04 inches (272*210*86 +/-1mm)
Weight - Approximate5.0 lbs.
CoolingSystem - Advancedairflow
- Fourfanswithlowsystemacousticnoiselevel
- Temperaturecontrolcircuitswithadaptivevoltagecontrol
fan speed
- MaxtouchtemperaturefollowsUL60950regulation
TiltAngle - 7degreewithelevatormechanism
Keystonecorrection - +/- 16 degrees (32 degrees)
Color - Silver Top and Silver Bottom / Front
LampDoorProtection - Lamppowersupplyshutoffautomaticallywhendooropen
1-3 Electrical Specifications
PowerSupply
- UniversalAC 100—240V, 50/60 Hz with PFC input
- 200WLamp
- Variance FANspeed control (Depend on temperature variant)
Terminals
- Computer Input (D-Sub FemaleTerminal *1) to take s SCART RGB signal, via an
adapter.
- Composite Video Input (RCAjack *1)
- S-Video Input (MiniDIN 4-pin *1) to take a SCART RGB signal, via an adaptor.
- 15 pin Monitor Output (D-Sub 15-pin Female terminal * 1)
- USB Remote mouse output (USB, type B connector * 1)
- Audiolineinput(3.5mmMiniJackstereo)

EP732B1-3
InputSignalSpec
- Hsync Frequency 31.5-70 kHz
- Vsync Frequency 43-85 Hz
- Video SignalRGB(PC)
Analog RGB 0.7 Vp-p, 75 ohm
Analog RGB 1 Vp-p, 75 ohm, Sync. signal
Separate TTL H, V Sync.
CompositeTTLSync.
- Video
Composite video 1 Vp-p, 75 ohm
S-Video Luminance 0.714 Vp-p, 75 ohm
Chrominance 0.286 Vp-p, 75 ohm
VideoCompatibility
- Standards :
NTSC M(3.58 MHz), 4.43 MHz
PAL B,D, G, H, I, M, N
SECAM B,D, G, K, K1, L
Component/HDTV 480i; 480P; 576P; 720P; 1080i
1-4 Optical Specifications
ProjectionLens - F/2.4~2.7, f=19.7~23.6mm. 1.2 x Manual Zoom Lens.
- ThrowRatio=1.75~2.12
ProjectionImageSize - Adjustable from 32.5”to337.5”(Diagonal)
ThrowDistance - 1.4m~12m
Brightness(200W) - 1150ANSILumens(Typical)
- 1030ANSILumens(Minimum)
Contrast - 1600: 1Typical(Full on/ Fulloff)
- 1000: 1Minimum(Fullon/Fulloff)
Uniformity - 65%Minimum(JapanStandard)

EP732B1-4
1-5 Environmental Specifications
Temperature:
- Operating : 5° to 35°C
- Storage : -20° to 60°C
MaximumHumidity
- Operating : 5° to 35°C, 80%RH (max), non-condensing
- Storage : -20° to 60°C, 80%RH (max), non-condensing
AcousticNoiseLevel:
- 200W : 37 dB(A) (Typical, Under 23 +/- 2oC)
- 160W : 34 dB(A) (Typical, Under 23 +/- 2oC)
LampLife:
- 2,000hours marketing spec
- 1,500hoursto 50%survivaltypical full onmode
Altitude:
- Operating : 0 ~ 2,500 ft 5~35° C
2,500 ~ 5,000 ft 5~30° C
5,000 ~ 10,000 ft 5~25° C
- Storage : 40,000 ft
MTBF : Operating more than 10,000 hours (80% Confidence Level)

EP732B2-1
Chapter 2
Disassembly Procedure
2-1 Removing Top Cover and I/O Panel
1. Unscrew 4 screws from left and right side of Top Cover.
2. Unplug one FPC cable and removeTop Cover.
3. Unscrew 4 hex screws to remove I/O Panel.
I/OPanel
1 1
2 3

EP732B2-2
1. Unscrew one screw to remove Lamp Cover.
2. Loosen 3 screws to remove Lamp Module.
2-2 Removing Lamp Cover and Lamp Module

EP732B2-3
1. Unplugall wires(bluecircle show)and unscrew5screws(red circleshow)to removeMain
Board.
Note : The green connector is connect to the
BlowerFan
2-3 Removing Main Board

EP732B2-4
1. Unscrew 5 screws (red circle show) and unplug one cable (blue circle show) to remove Lamp
Driver.
2-4 Removing Lamp Driver
MainBDBracket

EP732B2-5
1. Unscrew 2 screws to remove bracket.
bracket
2. Unscrew 2 screws to remove Blower Fan.
2-5 Removing Blower Fan and Front Fan
3. Unscrew 3 screws to remove Front Cover Module,
then unscrew 2 screws to remove Front Fan.
Front Cover Module
Front Fan

EP732B2-6
1. Unscrew 2 screws to remove bracket.
2. Unscrew 2 screws and unplug one cable.
3. Unscrew 4 screws to remove LVPS Module.
2-6 Removing LVPS Module

EP732B2-7
1. Unscrew 3 acrews to remove the Light Cut and Fan Vent.
2-7 Removing Engine Module
EngineModule
2. Unscrew5 acrews to removeEngine Module.
FanVent
LightCut

EP732B2-8
FanModule
3. Unscrew 3 screw to remove Fan Module and Silicon Rubber from Bottom Cover.
SiliconRubber
4. Unscrew 2 screw to remove Limit Switch from BottomCover.
ElevatorModule
LimitSwitch

EP732B2-9
Unscrew4 screws to remove allparts fromEngine Module.
DMDChip
DMDBD
DMDMylar
DMDHeatsink
DMDHeatsink
DMDSpringHolder
2-8 Disassembly Engine Module (Part I)

EP732B2-10
Unscrew 3 screws to remove Push Button, then unscrew 3 screws to remove Zoom Ring.
PushButton ZoomRing
2-9 Disassembly Engine Module (Part II)

EP732B3-1
Chapter 3
Troubleshooting
3-1 Equipment Needed
EP732B Projector
EP732B Remote Control
VGA to VGA Cable
PC (Personal Computer)
DVD Player for Video Signal and Audio Signal
HDTV Tuner or Player (480i, 480p, 720p, 1080i)
3-2 Main Procedure
3-2.1 Power Troubleshooting
A. Is LED Indicator OK?
- Check the Power cord and AC power outlet.
- Check the Keypad cable has broken or not.
- Check the Connect cable inside the Unit.
- Check the LVPS.
- Check the Main board.
- Check the Keypad board.
B. Is Fan Working After Press Power/Standby Button?
- Check the Keypad cable has broken or not.
- Check the Connectin wire of Fan.
- Check the Main board.
- Check the Fan.
C. Is Lamp Lit?
- Check the Lamp cover assembly OK or not.
- Check thay have the sound of Lamp ignitor output from Unit or not.
- Check the Cable of Limit switch.
- Check the Main board.
- Check the Lamp module.
- Check the Ballast.

EP732B3-2
3-2.2 Performance Troubleshooting (PC Signal)
A. Have Image?
- Ensure the Signal cable and Source work as well.
- Check that can OSD Menu show on the screen.
- Check the Main board.
B. Have Garbage Pattern?
- Ensure the Signal cable and Source work as well.
- Check the Main board.
C. Uniformity OK?
- Ensure the Projection screen without dirty.
- Ensure the Projection lens is clean.
- Ensure the Brightness is within spec.
(Replace the Lamp if the Brightness is less than spec.)
- Check the Optical engine.
D. Is Color OK?
- Ensure the Signal cable works as well.
- Check the “Color wheel index” in the service mode of OSD Menu. (*Note)
- Check the Photo sensor.
- Check the Main board.
E. Dot Defect isn’t Compliant with the Spec.
- Ensure the Projection lens is clean.
- Use the Air gun for the Optical engine clean.
- Check the DMD chip.
F. Have Noise?
- Ensure the Signal cable and Source is work as well.
- Adjust the Tracking selection in OSD Menu.
- Press the Menu button to check that have the noise issue appear on OSD Menu.
(Check the Main board if the noise also appear on the OSD Menu.)

EP732B3-3
G. Have Line Bar?
- Adjust the frequency selection in OSD Menu.
- Press the Menu button to check that have Line bar show on the OSD Menu.
(Check the DMD chip and DMD board. If the Line bar also show on the OSD Menu)
- Ensure that there is no dust on the DMD Contact housing module.
- Re-assembly for DMD module.
- Check the Main board.
H. Have Noise?
- Ensure the Signal cable and Source is work as well.
- Adjust the Tracking selection in OSD Menu.
- Press the Menu button to check that have the noise issue appear on OSD Menu.
(Check the Main board if the noise also appear on the OSD Menu.)
* Note : The procedure to enter service mode is..
Press “UP”, “DOWN” button at the same time, and then press “UP”, “UP”
“LEFT” button when the unit display “No Signal” image.
3-2.3 Performance Troubleshooting (Video Signal)
A. Have Image?
- Ensure the signal cable and source work as well.
- Check that can OSD menu show on the screen.
(Check the main board if OSD menu cannot show on the screen)
- Check the I/O connect board.
(Use the new I/O connect board for the test)
B. Have Garbage Pattern?
- Ensure the signal cable and source work as well.
- Check that can OSD menu show on the screen.
(Check the main board if OSD cannot show on the screen)
- Check the I/O connect board.
(Use the new I/O connect board for the test)