Optoma Optoma EP750 User manual

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EP750/755
Preface
This manual is prepared for the maintenance service for EP750/755
Micro-portable SVGA/XGA DLP Projector. Maintenance procedures
described in this manual are intended to isolate faulty parts and replace
them in the field. It also aims to serve as a guide in procuring
replacement parts for this product.
This manual is copyrighted and all rights are reserved. This product
may not, in whole or in part, be copied, photocopied, translated or
reduced to any electronic or machine readable form without prior
written consent except for copies retained by the purchaser for backup
purpose.
This manual includes system overview, major system assembly,
components description, and the Troubleshooting making
explanations on how to detect errors. It also includes a flow chart for
checking or correcting faults.
No warranty or representation, either expressed or implied, is made
with respect to this documentation, its quality, performance,
merchantability or fitness for particular purpose.
No event that the vendor will be liable for direct, indirect, special,
incidental or consequential damages arising out of the user or inability
to use this product or documentation.
NOTICE :
The information found in this manual is subject to change
without prior notice. Any subsequent changes made to the
data herein will be incorporated in further edition.
Copyright 2001, December
All Rights Reserved
Manual Version 1.0
Document # 836-G04-01A
P/N :36.83603.001

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EP750/755
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I. Introduction 1-1
1-1 Product Highlights 1-2
1-2 Technical Specifications 1-3
II. Fundamental Principle 2-1
2-1 Whole System Block Diagram 2-2
2-2 Optics 2-6
III. Mechanical Construction 3-1
3-1 Package Overview 3-2
3-2 Exploded Overview 3-4
3-3 Recommendation Spare Parts List 3-20
IV. Procedure of Disassembly 4-1
4-1 Disassemble Top Cover Module, Keypad Board and Speaker 4-3
4-2 Disassemble AV Module and Connector Board 4-6
4-3 Disassemble Lamp Ballast and Power Supply 4-8
4-4 Disassemble Lamp Module and Thermal Board 4-10
4-5 Disassemble Fan Module and Front End Board 4-12
4-6 Disassemble Formatter Board 4-14
V. Function of Boards 5-1
5-1 Front End Board 5-2
5-2 Formatter Board (Side A) 5-10
5-3 Formatter Board (Side B) 5-11
5-4 Thermal Board 5-15
5-5 Data Connector Board 5-18
] Table of Contents ]

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EP750/755
VI. Specifications 6-1
6-1 DMD Specifications 6-2
6-2 Screen Defect Limits 6-3
6-3 Power Supply Specifications 6-4
6-4 Lamp Specifications 6-7
6-5 Lamp Driver Specifications 6-9
VII. Troubleshooting 7-1
7-1 Equipment Needed 7-2
7-2 Main Procedure 7-2
VIII. Function Test & Alignment Procedure 8-1
8-1 Product 8-2
8-2 Test Equipment 8-2
8-3 Test Condition 8-2
8-4 Test Display Modes and Patterns 8-3
8-5 Inspection Procedure 8-8
IX. Firmware Upgrading Procedure 9-1
9-1 Equipment Needed 9-2
9-2 Setup Procedure 9-3
9-3 Upgrading Procdure 9-3
X. DDC Key-In Procedure 10-1
10-1 Equipment Needed 10-2
10-2 Setup Procdure 10-2
10-3 DDC Key-in Procedure 10-4
XI. Appendix 11-1
11-1 Serial Number System Definition 11-2
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EP750/755
INTRODUCTION
This manual is applied to 0.7*1 DMD Color Projector with digital imaging func-
tionality based on Digital Micromirror Device (DMD) technology. Its the mode of
single panel, 200 watt long life SHP lamp. The manual gives you a brief descrip-
tion of basic technical information to help in service and maintaining the product.
Your customers will appreciate the quick response time when you immediately
identify problems that occur with our products. We expect your customers will
appreciate the service that you offer them.
This manual is for technicians and people who have an electronic background.
Send the product back to the distributor for repairing and do not attempt to do
anything that is complex or is not mentioned in the troubleshooting.
CHAPTER 1

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EP750/755
qOne panel 0.7 DMD projection system with 1350 ANSI lumens (Typical)-For EP750
1440 ANSI lumens (Typical)-For EP755
q270-Watt Compact SHP-DC Lamp (User Replaceable)
qHigh efficiency cooling system with system acoustic noise level 36dBA (Average)
qLight weight less then 6.8 lbs
qManual focus projection zoom lens
qTrue 1024*768 resolution, True colors
qWith up, down, left, and right screen reverse
qBuild-in full screen NTSC/PAL/SECAM video capability with S-video/composite/com-
ponent and HDTV terminals
qSXGA/XGA/SVGA/VGA/MAC/PC98/FM Towns compatibility with XGA compression/
pan
qAuto image re-sizing to 1024*768 full screen
qAuto detection of computer signal input
qAuto image. (Auto-tracking/frequency/position adjustment)
qPowerful enlarge and freeze function
qAutomatically saves adjustments for future use
qOn-screen menu with 9 languages
qOn Screen lamp life timer.
qOne DVI PC-data input (Including Analog and Digital RGB signal)
qBuilt-in one speaker with 3 Watt amplifier
qSelf protect (15 seconds) timer for hot re-strike of compact SHP-DC lamp
qWireless remote controller/mouse/laser
qAdaptive voltage control fan speed.
1-1 Product Highlights

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EP750/755
1-2 Technical Specification
1-2.1 Mechanical Specifications
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EP750/755
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"11.811/'48.9/m0.3"918.37/'251.6/m578.1"550.95/'129.4/m05.1
"84.751/'21.31/m0.4 "524.89/'202.8/m5.2 "047.87/'265.6/m00.2
"58.691/'04.61/m0.5"30.321/'352.01/m521.3"524.89/'202.8/m05.2
"22.632/'96.91/m0.6 "836.741/'303.21/m57.3 "011.811/'348.9/m00.3
"95.572/'79.22/m0.7"442.271/'453.41/m573.4"597.731/'384.11/m05.3
"69.413/'52.62/m0.8 "58.691/'404.61/m0.5 "084.751/'321.31/m0.4
"33.453/'35.92/m0.9"654.122/'54.81/m526.5"561.771/'467.41/m5.4
"07.393/'18.23/m0.01 "360.642/'505.02/m52.6 "58.691/'404.61/m0.5
"70.334/'90.63/m0.11"966.072/'655.22/m578.6"535.612/'540.81/m5.5
"44.274/'73.93/m0.21 "572.592/'606.42/m5.7 "022.632/'586.91/m0.6
"91.884/'86.04/m4.21"811.503/'724.52/m57.7"490.442/'143.02/m2.6
Throw Ratio : 2.0~2.5 (Projection Distance / Image Width)

2-1
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EP750/755
FUNDAMENTAL PRINCIPLE
This section provides the conceptual drawing about optics of projector.
You can realize optical projection system through the following diagram and the
integral part of configuration, too.
CHAPTER 2

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EP750/755
2-1 Whole System Block Diagram
D-Sub
Output
S-Video
Video
Audio
DVI
D-Sub
Mouse
RS232
Input
Speaker
Front-End
Board
Inter Lock
Switch
LVPS
Module
IR Receiver
Fan
Thermal
Board
Thermal
Sensor
Formatter
Board
Module
Lamp
Ballast
Module
Keypad
Photo
Sensor
LAMP
Module
Color Wheel
Thermal
Switch

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EP750/755
2-1.1 Front End Board Block Diagram
D-Sub output
Analog Input
Digital Input
Video Decoder
Memory
Image Process
MIS
Thermal Board
LVPS Module
DMD Module
R.G.B.H.Vsync
Digital R.G.B data H.Vsync SDA SCL GCLK
y (0-7) UV (0-7) GM-VHS GM-VVS GM-VPEN GM-VCLK
Standby out 7 Sec RESET MCLK DCLK
KDS (0-3) KDR (0-2) ERR Standby-1
ECOMODE
LAMP Lit Digital R.G.B Data DCLK0 DENR DVS DHS
LAMP ON / Lamp Lit RESET# / Lamp Lit RESET0 / Lamp Lit
LAMP-IN LAMP-OUT

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EP750/755
2-1.2 Thermal Board Block Diagram
THERMAL BOARD Interface
FAN 1-4
THERMAL
SWITCH
THERMAL
SENSOR
LM75
MAIN
BOARD
KEY PAD
20P Connector to
Formatter Board
16P Connector
3P Connector *4
2P Connector
4P Connector *2
STB
ECON
KEY 7PIN
ERR_OUT
LAMPMISS
POWER 15V, 5VA
STANDBY
ERR_OUT
IR_ON

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EP750/755
2-1.1 Formatter Board Block Diagram
VCC2,VOFFSET,VBIAS VERSET GENERATION
RESET ASIC
DMD
0.7 XGA
DATAPATH
FORMATTER
DPF2A
SDRAM B
SDRAM A
ALLEGRO
MOTOR
CONTROL
MICRO
CONTROLLER
CONTROL
FPGA
CONFIG/
SEQUENCE
PROM
CUSTOMER INTERFACE CONNECTOR
VCC2 (DMD) VCC2 (ASIC)
VOFFSET
VBIAS
VRESET
+5V +12V
CLOCK
OSC
DPF2A CONTROL
VSYNCZ
HSYNCZ
ACTDATA
TFIELD
OLACT
SYNCVAL
LAMP CONTROL&STATUS
COLOR WHEEL INDEX
FPGA CLK
FLASH PROGRAMMING HEADER
IIC BUS
HITACHI DOWNLOAD HEADER
CLKIN
COLOR WHEEL
CONTROL
COLOR WHEEL STATUS
CWRSTZ
VOLTAGE ENABLES
BIAS BIN
BIAS/RESET CONTROL
DMD CONTROL
PBUS2
MENORY CONTROL A
MENORY ADDRESS A(12) MENORY CONTROL B DMD CONTROL
COLOR
WHEEL
DRIVE
DATA (8)
VSYNCZ, RESETZ
ADDRESS (19)
MBIASRST (16)
INPUTCLK
FPGA CLK DMD CLK
SDRAM CLK
DATA(0..63)
DMD DATA(0..63)
MENORY ADDRESS A(12) MENORY ADDRESS B(12)

2-6 |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
EP750/755
1. Lamp Module 7. Relay Lens 2
2. Lamp Cover Glass 8. Condenser
3. Color Wheel 9. DMD
4. Hollow Rod 10. Mirror
5. Relay Lens 4 11. Projection Lens
6. Relay Lens 3
2
3
1
5
4
98
6
7
10
11
2-2 Optics
2-2.1 Conceptual Drawing

2-7
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EP750/755
Lamp Module The light source.
Lamp Cover Glass Protecting system components if the lamp explodes
Color Wheel Separating the light beam into and produce R.G.B colors.
Hollow Rod Making the light beam uniform.
Relay Lens Relay the object
Condenser Condensing the light beam.
DMD Module Displaying component.
Mirror Folding optical path.
Projection Lens Projecting image on the screen
2-2.2 Basic Functions

3-1
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EP750/755
This section provides the package and exploded overview, replaceable
parts list and recommendatiom parts list for the portable projector. You can
place an order for correct parts in the recommendation parts list.
MECHANICAL CONSTRUCTION
CHAPTER 3

3-2 |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
EP750/755
3-1 Package Overview

3-3
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EP750/755
Replacement Parts List
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A00.10638.PDA557orPzE.P.D
1190.20325.53A KALB29*801OTRACLEBAL
2100.60638.53A 557PEOBMOCOCVALEBAL
3200.21000.63B SEIRESPPLROFSU,DRACTARRAW
41000.63 8100.A PPLROFASU,MROFOITARTSIGER;YTARRAWDEDETXE
SEIRES
1-5100.10638.63B 557orPzELAUGILITLUMEDIUGS'RESU
2-5100.10738.63B 057orPzELAUGILITLUMEDIUGS'RESU
6100.20638.63B 557orPzELAUGILITLUMDRACTRATSKCIUQ
1-7100.51105.24B 41SI+03PSmm0381DROCREWOPELBAC
2-7100.21105.24B .RUE41SI+320-PSmm0381DROCREWOPELBAC
3-7100.40018.24B )AIHC(V022M2DROCREWOPELBAC
4-7100.61105.24B )PJ(mm0051DROCREWOPELBAC
5-7100.71105.24B )AILARTSUA(mm0081DROCREWOPELBAC
8110.90205.24B 006orPzEM2SHV-SELBAC
9110.51708.24B M5ACROTKCAJIIMELBAC
01300.01105.24A OEDIVM5ACROTACREBLBAC
11100.51708.24B mm0081ACROTKCAJIIMELBAC
21100.01918.24B OSURACM8.1BUS-D/EPYT"A"BSUOTP8IDIIMELBACY
31150.10035.24B KCALB5+C3M8.1P51AGVELBAC
41200.10438.54A 537orPzELEBALADFHTIWRELLORTOCETOMER
51100.10308.64BV5.14#YRETTAB
61200.21108.15A t70.0*055*024EPDLgaBDSE
71100.23638.15A 557orPzEA12-TCCPREVOCEDIS
81100.10638.35A 557orPzEGABYRRACTFOS
91100.20338.55A 037orPzEXOBYROSSECCAOTRAC
0200.10638.55 2A557PE223*483*424BAOTRAC
12100.20338.65A 537orPzEEPEXOBYROSSECCAROFOITITRAP
22100.10638.65A 557orPzEEPEOIHSUC
32100.20638.65A 557orPzEEPEESACTFOSEDISIOIHSUC
42100.10000.75A g02REIRD2OISKCAP
52100.70638.57A 557orPzEELUDOMPACSELYSSAYUB
Note : Mark --- and in red color mean the added or updated item, and item in
blue color is deleted.

3-4 |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
EP750/755
3-2 Explo e Overview

3-5
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EP750/755
Replacement Parts List
metI N/P .veR noitpircseD krameR
-100.10638.CD
100.20738.CD A557orPzE.C.D 057orPzE.C.D
1100.70708.53A 006orPzEPMAL-GIRRAWLEBAL
1-2100.10638.53A 557orPzELAETALPEMALEBAL
2-2100.10738.53A 057orPzELAETALPEMALEBAL
3100.70638.15A 557orPzEA12-TCLYROREVOCPMALMTB
4100.63638.15A 557orPzEREVOCPMALROFROTALUSI
5100.11508.16A KCALB4-8*3MHCEMAPWERCS
1-6100.31638.07A 557orPzEELUDOMGISUOHMOTTOBYSSA
2-6200.30738.07A SPILIHP,057PEELUDOMGISUOHMOTTOBYSSA
700.61638.07 3ASPILIHPROF557PEGISUOHPOTYSSA
8050.323A0.58A 557orPzEKCALB5*3MHCEMF/PWERCS
9003.323A1.58kcalB03*3MhceMnaPwercS
0100.83000.16 2A=LXEHWERCS 68*3Mmm0
Note : Mark --- and in red color mean the added or updated item, and item in
blue color is deleted.

3-6 |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
EP750/755
3-2.1 Top Housing Module
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