Optoma EP756 User manual

1-1 EP757 SERVICE MANUAL
Introduction Fundamental Principle Mechanical Construction Procedure of Disassembly Function of Boards Specifications
Troubleshooting Function Test and Alignment Procedure Firmware pgrading Procedure DDC Key-In Procedure Appendix
This manual is applied to 0.7*1 DMD Color Projector with digital imaging
functionality based on Digital Micromirror Device (DMD) technology. Its the
mode of single panel, 250 watt long life HP lamp. The manual gives you a
brief description of basic technical information to help in service and main-
taining the product.
Your customers will appreciate the quick response time when you immedi-
ately identify problems that occur with our products. We expect your cus-
tomers 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.
Introduction
11
11
1

1-2 EP757 SERVICE MANUAL
Introduction Fundamental Principle Mechanical Construction Procedure of Disassembly Function of Boards Specifications
Troubleshooting Function Test and Alignment Procedure Firmware pgrading Procedure DDC Key-In Procedure Appendix
1-1 Product Highlights
- One panel 0.7 DMD XGA projection system with 1615 ANSI lumens, 64% uniformity (Japan)
- 250 Watt Philips HP Lamp 2,000 hrs ( ser replaceable)
- High efficiency cooling system with system acoustic noise level 37 +/- 1dB(A) (Average)
- Light weight less then 6.6 lbs
- Manual focus projection zoom lens 1.2X
- True 1024 x 768 resolution, True colors
- With up, down, left, and right screen reverse
- XGA / SVGA/ VGA / MAC / iMAC / PC98 / FM Towns / VESA compatibility with XGA compression &
120 Hz High Refresh Compatible
- Auto image re-sizing to True XGA 1024 x 768 Addressable Pixels screen
- Auto detection of computer signal input
- Auto Image ( Auto-tracking / Frequency / Position adjustment )
- Powerful enlarge and freeze function
- Automatically saves adjustments for future use
- On-screen menu with 10 languages
- On Screen lamp life timer
- Build-in full screen NTSC / PAL / SECAM video capability with S-video / Composite / Component and
HDTV terminals with 4 : 3 / 16 : 9 format
- One DVI PC-data input ( Including Analog and Digital RGB signal )
- Built-in 2 speakers with 3 Watt amplifier
- Wireless remote controller
- Adaptive voltage control fan speed

1-3 EP757 SERVICE MANUAL
Introduction Fundamental Principle Mechanical Construction Procedure of Disassembly Function of Boards Specifications
Troubleshooting Function Test and Alignment Procedure Firmware pgrading Procedure DDC Key-In Procedure Appendix
1-2.1 Optical Features
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1-2 Technical Speci ication
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"47.87/'45.6/m0.2"312.94/'001.4/m052.1"010.14/'714.3/m240.1
"11.811/'48.9/m0.3"918.37/'051.6/m578.1"615.16/'521.5/m365.1
"84.751/'21.31/m0.4"524.89/'002.8/m5.2"120.28/'338.6/m380.2
"58.691/'04.61/m0.5"30.321/'052.01/m521.3"625.201/'245.8/m406.2
"22.632/'86.91/m0.6"836.741/'003.21/m57.3"130.321/'052.01/m521.3
"95.572/'69.22/m0.7"442.271/'053.41/m573.4"635.341/'859.11/m646.3
"69.413/'42.62/m0.8m58.691/'004.61/m0.5"240.461/'766.31/m761.4
"33.453/'25.92/m0.9"654.122/'54.81/m526.5"745.581/'573.51/m886.4
"07.393/'08.23/m0.01"360.642/'05.02/m52.6"250.502/'380.71/m802.5

1-4 EP757 SERVICE MANUAL
Introduction Fundamental Principle Mechanical Construction Procedure of Disassembly Function of Boards Specifications
Troubleshooting Function Test and Alignment Procedure Firmware pgrading Procedure DDC Key-In Procedure Appendix
1-2.2 Electrical Features
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1-5 EP757 SERVICE MANUAL
Introduction Fundamental Principle Mechanical Construction Procedure of Disassembly Function of Boards Specifications
Troubleshooting Function Test and Alignment Procedure Firmware pgrading Procedure DDC Key-In Procedure Appendix
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1-2.4 Environmental Features
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1-2.3 Mechanical Features

2-1 EP757 SERVICE MANUAL
Introduction Fundamental Principle Mechanical Construction Procedure of Disassembly Function of Boards Specifications
Troubleshooting Function Test and Alignment Procedure Firmware pgrading Procedure DDC Key-In Procedure Appendix
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.
Fundamental
Principle
22
22
2

2-2 EP757 SERVICE MANUAL
Introduction Fundamental Principle Mechanical Construction Procedure of Disassembly Function of Boards Specifications
Troubleshooting Function Test and Alignment Procedure Firmware pgrading Procedure DDC Key-In Procedure Appendix
2-1 Whole System Block Diagram
D-Sub
Output
S-Video
Video
Audio
DVI
D-Sub
Mouse
RS232
Input
Speaker
Front-End
oard
Inter Lock
Switch
LVPS
Module
IR Receiver
Fan
Thermal
oard
Thermal
Sensor
Formatter
oard
Module
Lamp
allast
Module
Keypad
Photo
Sensor
LAMP
Module
Color Wheel
Thermal
Switch

2-3 EP757 SERVICE MANUAL
Introduction Fundamental Principle Mechanical Construction Procedure of Disassembly Function of Boards Specifications
Troubleshooting Function Test and Alignment Procedure Firmware pgrading Procedure DDC Key-In Procedure Appendix
2-1.1 Front End Board Block Diagram
D-Sub output
Analog Input
Digital Input
Video Decoder
Memory
Image Process
MIS
Thermal oard
LVPS Module
DMD Module
R.G. .H.Vsync
Digital R.G. 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. Data
DCLK0
DENR
DVS
DHS
LAMP ON / Lamp Lit
RESET# / Lamp Lit
RESET0 / Lamp Lit
LAMP-IN
LAMP-OUT

2-4 EP757 SERVICE MANUAL
Introduction Fundamental Principle Mechanical Construction Procedure of Disassembly Function of Boards Specifications
Troubleshooting Function Test and Alignment Procedure Firmware pgrading Procedure DDC Key-In Procedure Appendix
2-1.2 Thermal Board Block Diagram
THERMAL OARD Interface
FAN 1-4
THERMAL
SWITCH
THERMAL
SENSOR
LM75
MAIN
OARD
KEY PAD
20P Connector to
Formatter oard
16P Connector
3P Connector *4
2P Connector
4P Connector *2
ST
ECON
KEY 7PIN
ERR_OUT
LAMPMISS
POWER 15V, 5VA
STAND Y
ERR_OUT
IR_ON

2-5 EP757 SERVICE MANUAL
Introduction Fundamental Principle Mechanical Construction Procedure of Disassembly Function of Boards Specifications
Troubleshooting Function Test and Alignment Procedure Firmware pgrading Procedure DDC Key-In Procedure Appendix
2-1.1 Formatter Board Block Diagram
VCC2,VOFFSET,V IAS
VERSET GENERATION
RESET ASIC
DMD
0.7 XGA
DATAPATH
FORMATTER
DPF2A
SDRAM
SDRAM A
ALLEGRO
MOTOR
CONTROL
MICRO
CONTROLLER
CONTROL
FPGA
CONFIG/
SEQUENCE
PROM
CUSTOMER INTERFACE CONNECTOR
VCC2 (DMD)
VCC2 (ASIC)
VOFFSET
V IAS
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 US
HITACHI
DOWNLOAD
HEADER
CLKIN
COLOR
WHEEL
CONTROL
COLOR WHEEL STATUS
CWRSTZ
VOLTAGE ENA LES
IAS IN
IAS/RESET CONTROL
DMD CONTROL
P US2
MENORY CONTROL A
MENORY ADDRESS A(12)
MENORY CONTROL
DMD CONTROL
COLOR
WHEEL
DRIVE
DATA (8)
VSYNCZ, RESETZ
ADDRESS (19)
M IASRST (16)
INPUTCLK
FPGA CLK
DMD CLK
SDRAM CLK
DATA(0..63)
DMD DATA(0..63)
MENORY ADDRESS A(12)
MENORY ADDRESS (12)