Optoma EP770 Instruction manual

Prepared by SI :
________________________________________
Prepared by TSE :
________________________________________
Checked by :
________________________________________
Approved by :
________________________________________
Model Name : EP770
Date Version Description
2006/12/28 V1.0 Initial Issue
Copyright Dec., 2006 . All Rights Reserved
P/N#36.86S03G001
SERVICE MANUAL

Preface
This manual is applied to EP770 0.7” 0.7" XGA / 12º DDR DMD projection system.
The manual gives you a brief description of basic technical information to help in service
and maintain 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.
Please 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.
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 future edition.
EP770 Service Manual
Copyright Dec., 2006
All Rights Reserved
Manual Version 1.0
P/N#36.86S03G001
EP770
I
Condential

Table of Contents
Chapter 1 Introduction 1-1
Product Highlight 1-1
Computer CVompatible 1-4
Chapter 2 Disassembly Procedure 2-1
Equipment Needed 2-1
Remove Lamp Module 2-2
Remove Front Cover / Back Cover / Top Cover 2-3
Remove IR Receiver / Keypad BD / Main Button 2-5
Remove Main Board 2-6
Remove Elevator and Shielding Cover 2-7
Remove Lamp Driver and Fan Module 2-8
Remove LVPS 2-9
Remove Engine Module 2-10
Remove Bottom Cover 2-12
Chapter 3 Troubleshooting 3-1
Equipment Needed 3-1
LED Lighting Messsage 3-1
LED Procedure 3-2
Chapter 4 Function Test and Alignment Procedure 4-1
Test Equipment Needed 4-1
Service Mode 4-1
Reset(OSD) 4-2
Test Condition 4-2
Inspection Procedure 4-3
Chapter 5 Firmware Upgrade Procedure 5-1
Equipment Needed 5-1
Firmware Upgrade Mode 5-1
Installation Procedure 5-2
Firmware Upgrade Procedure 5-6
EP770
II
Condential

EP770
III
Chapter 6 EDID Upgrade Procedure 6-1
EDID Introduction 6-1
Equipment Needed 6-1
Setup Procedure 6-2
EDID Key-In Procedure 6-2
Appendix Appendix A 7-1
Exploded Overview 7-1
Appendix B 7-21
I . Serial Number System Denition 7-21
II. PCBA Code Denition 7-22
Reader’s Response 7-23
Condential

EP770Condential 1-1
Chapter 1
Introduction
1-1 Highlight
No Item Description
1Weight Appro x 6 lbs.
2Dimension (W x H x D) 265mm x 236mm x 104mm
3 Cooling system Advanced air ow
Three fans with low system acoustic noise level
Temperature control circuits with adaptive voltage con-
trol fan speed
Maximum touch temperature follows UL 60950-1 regula-
tion
4 Connect I/O port - DVI-I x 1
- VGA D-sub 15 pin x 2(VGA-in, VGA-out)
- RCA (yellow) x 1
- S-Video Mini DIN 4pin x 1
- USB Type B x 1
- RS232 Mini DIN 3 pin x 1
- Audio-in stereo mini jack x 1
- Kensington slot x 1
- Inlet vent x 1
5 Lamp housing - Removable lamp module with replaceable lamp. Lamp
should be provided by Coretronic or its authorized
agencies, and changed by following the instruction on
user’s manual.
6 Tilt angle: - 6 degree with elevator mechanism
7Lamp Door Protection - Lamp power supply shut off automatically when door
open
8Power supply - 100-240VAC, 3A, 50/60Hz with PFC(Power Factor
Correction)
9 Power Consumption - Operating: 275W+/-10%@typ.110VAC
- Standby: <13W, 110VAC
10 Input signal spec. - Computer signal:
- H sync frequency: 31.35~80 kHz
- V sync frequency: 56 ~ 85 Hz
- Sync type: separate, composite, SOG(sync on green)
- RGB level:
0.7Vp-p, 75 ohm(separate sync/composite sync/R,B
in SOG)

EP770
Condential 1-2
No Name Description
10 Input signal spec. 1Vp-p, 75 ohm (G in SOG)
- Video signal:
- Composite video 1Vp-p, 75 ohm
S-Video :
Luminance 75 ohm
Chrominance 75 ohm
11 System Controller - TI DDP2000
12 Video compatibility - NTSC-M/NTSC-4.43/PAL-M/PAL-B, D, G, H, I/PAL-N/
SECAM
- Component: SDTV(480i/576i), EDTV(480p, 576p),
HDTV(720p, 1080i)
13 Compression - Compress SXGA image into XGA by DDP2000
14 keypad Left/Right/Up/Down/Menu/Enter/Power
15 Keystone correction - Vertical +/- 16 degree
16 Brightness - 2500 (Typ.), 2150 (Min.) ANSI Lumens @ full on mode
- 1800 (Typ.), 1550 (Min) ANSI Lumens @ ECO mode
17 Contrast - Full on/off : 1500:1 (Typ.), 1000:1 (Min.)
18 Uniformity - JBMA : 75 % (Typ.) 60% (Min.)
- ANSI : max.|+/-50%|
19 Projection lens - 1.2x manual zoom
- F-number : 2.4 – 2.65 @2.36m
- Focal length : 28.04 ~ 35.59 mm @2.36m
20 Throw ratio - 2.0 ~ 2.41:1(distance/width)
21 LED indicator - Power/Lamp/Temperature
22 Lamp life - 1800 hours with 50% survival rate, 50% maintenance
to initial lumens at full power mode
23 Lamp type - Pilips E19.5 220W UHP, normal mode: 220W, Eco
mode: 172W (by GPIO)
24 Optional accessories - Mini DIN 4pin, S-Video cable, 1.8 m
- RCA (yellow), Composite cable, 1.8 m
- Remote controller,
- Battery for remote controller x 2
- Soft carrying bag
25 Full Printed manual - EMEA & USA : English, French, German, Spanish and
Portuguese
- ASIA : English, Traditional Chinese, Japanese, Korean
and Simplied Chinese,

EP770Condential 1-3
NO Name Description
26 QSC - With 17 languages : English, German, French, Dutch,
Greek, Swedish, Italian, Spanish, Portuguese,
Polish, Norwegian,(No/DK), Russian, Finnish,
Traditonal Chinese, Simplied Chinese, Japanese,
Korean
27 Color Wheel - R90Y30G80W86B74
28 Acoustic Noise Level - Full power: Max: 38dB(A) ,typical :36 dB(A) at 23+/-2
29 Quick shut down - 30 seconds
30 Input Terminals - DVI-I : Digial YPbPr w/ HDCP
- D-sub 15pin x 1 : Analog RGB, Component video,
SCART-RGB
- RCA(yellow) x 1 : Composite Video, SCART-RGB
- Mini DIN 4pin x 1 : S-Video
- Stereo Mini Jack : Audio input

EP770
Condential 1-4
1-2 Computer Compatible
Compatibility Resolution V-Sync (Hz)
VGA 640 x 350 70
640 x 350 85
640 x 400 85
640 x 480 60
640 x 480 72
640 x 480 75
640 x 480 85
720 x 400 70
720 x 400 85
SVGA 800 x 600 56
800 x 600 60
800 x 600 72
800 x 600 75
800 x 600 85
XGA 1024 x 768 60
1024 x 768 70
1024 x 768 75
1024 x 768 85
SXGA 1152 x 864 60
1152 x 864 75
1152 x 864 85
1280 x 960 60
1280 x 960 75
1280 x 1024 60

EP770Condential 1-5
Compatibility Resolution V-Sync (Hz)
1280 x 1024 75
MAC 16” 832x624 74.55
MAC 19” 1024x768 75
MAC 1152x870 75.06
MAC G4 640x480 60
i Mac DV 1024x768 75
i Mac DV 1152x870 75
i Mac DV 1280x960 75

EP770
Condential 2-1
Disassembly Process
This section provides disassembly procedure for EP770 Mid-level Micro Portable Business
Projector. Before you begin any of these procedures, be sure to turn off the power, computer
system, and other attached devices; then disconnect the power cable from the electrical
outlet. Moreover, when you disassemble the projector, be sure to put the screws in a safe
place and separate them according to their category.
Equipment Needed
Chapter 2
General Information
Before You Begin
Before proceeding with the disassembly procedure, make sure that you do the following
procedures:
1. Turn off the power of the system and all the peripherals.
2. Unplug the AC adapter and all power and signal cables from the system.
3. Anti-static wrist strap.
Item Photo Item Photo
Philips (+) : 107 Philips (+) : 102
Screw Bit Hex Screw :
5mm
Tweezers Screw Bit

EP770Condential 2-2
No Procedure Photo
1Unscrew 2 screws to remove
the Lamp Cover.
2Unscrew 2 screws to remove
the Lamp Module.
1. Remove Lamp Module
Mechanical Disassembly Procedure

EP770
Condential 2-3
No Procedure Photo
1
Unscrew 3 screws to remove
the Front Cover.
Note: Please pay attention
to the two tenons on both
side when pull upward the
front cover.
Note for Assembly: Please
follow step a -->b to
assembly the front cover.
Note:
Note for Assembly:
a.
b.
2. Remove Front Cover / Back Cover / Top Cover

EP770Condential 2-4
No Procedure Photo
2
Unscrew 6 hex screws and 2
screws to remove the Back
Cover.
3
Unscrew 3 screw in the Bottom
Cover and 1 FPC connector,
unplug IR Receivers to
remove Top Cover Module.

EP770
Condential 2-5
3. Remove IR Sensor Board/Keypad BD/Main Button
No Procedure Photo
1Remove mylar and IR Sensor
Board.
2
Disassemble Top Cover /
Keypad BD / Main Button:
a. Unscrew 3 hex spacers
b. Unscrew 4 screws to
remove Top Shelding.
Note for assembly: add 3M
sticker in C2 position to avoid
to damage FPC wire.

EP770Condential 2-6
4. Remove Main Board
No Procedure Photo
1
Unplug 9 connects, unscrew 5
screws in the Top and then un
plug 1 connector in the Bottom
to remove the Main Board.

EP770
Condential 2-7
5. Remove Elevator and Shielding Cover
No Procedure Photo
2
a. Take off the Elevator Foot
Rubber and unscrew 1 screw
to remove the elevator.
b. Unscrew 2 screw to remove
the elevator.

EP770Condential 2-8
6. Remove Lamp Driver and Fan Module
No Procedure Photo
1
a. Unscrew 2 hex screws
& 2 screws and unplug 2
connectors to remove the
Lamp Driver.
b. Unscrew 3 screws to
remove Axial Fan Module.

EP770
Condential 2-9
7. Remove LVPS
No Procedure Photo
1
a. Unscrew 2 hex screws & 4
screws and unplug 1 grouding
wire (with 1 screw) to remove
the LVPS.
b. Unplug 2 connectors to
separate the LVPS.
Note:
When assemble LVPS and
MB, LVPS Cable has to follow
direction as Map showed.

EP770Condential 2-10
8. Remove Engine Module
No Procedure Photo
1Unscrew 2 screws to remove
Fan module.
2
a. Unscrew 4 screws to
remove the Engine Module.
b. Unscrew 3 screws to
remove Blower and Interlock
switch.

EP770
Condential 2-11
No Procedure Photo
3Unscrew 4 screws to remove
the Heatsink Module.
4
Unscrew 4 hex screws to
disassemble the other Engine
Module.
5Unscrew 1 screw to remove
the Color Wheel.
6Unscrew 1 screw to remove
the Photo Sensor Board.
7Take the Zoom Ring off
directly.