Optoma EX785 User manual

Delta Elec. Inc. EX785_ EW775
Company Confidential Optoma___________________ Delta________________
1 2010/01/05
DATA PROJECTOR
EX785 (DP-3638)
EW775 (DP-7606)
SERVICE MANUAL

Delta Elec. Inc. EX785_ EW775
Company Confidential Optoma___________________ Delta________________
2 2010/01/05
CONTENTS
1.COMPLIANCE OF SAFE REPAIR.........................................................................................4
1-1.Caution During Disassembling And Assembling..............................................................4
1-2.Lamp............................................................................................................................... 4
1-3.Lens.................................................................................................................................4
1-4.Eye Safety Warnings.......................................................................................................5
2.SPECIFICATIONS..................................................................................................................6
2-1.Summary Specifications................................................................................................. 6
2-2.DMD Specifications........................................................................................................ 7
2-3.Color Wheel.................................................................................................................... 7
2-4.Lamp............................................................................................................................... 7
2-5.Terminal connectors………………………………..……………….……………………….…7
2-6.Main Unit View……………………………………………………….………………………....8
2-7.I/O Ports Illustration about projector…………..................................................................9
2-8.Control panel……………………………………………………….……………………….…10
2-9.Remote Control Parts....................................................................................................11
2-10.Adjusting Projected Image Position Using PureShift………….…………....………….. 13
2-11.PureShift Range Diagram………………………………………….………………….…....16
2-12.Adjusting Projection Image Size…………………………….….………………………….17
2-13.BLOCK DIAGRAM...................................................................................................... 20
2-14. Explanation of Block Diagram……...……………………….……………………………..23
3.TROUBLE SHOOTING....................................................................................................... 25
4.DISASSEMBLYAND ASSEMBLY…………........................................................................ 34
5.Flash Upgrade Flow............................................................................................................ 58
5-1. Projector USB Drivers Installation Guide……………………………………….…..……..58
Appendix-A: How to clear the USB enumeration registry?...........................................65
Appendix-B: Projector USB status on Windows Device Manager………….…………..66
5-2. DLP Projector Flash-Tool (Firmware) User Guide ………………......……………....…..67
5-3. DLP Projector Flash-Tool (splash logo) User Guide………………..……………………73
5-4.Powering On/Off the Projector………………………………………………………..…......79
5-5. SETUP / Security………..…………………..…………..…………….…..…….…………..81
6.Calibration……………………………..………………………………………….………………..85
7.Installing or Removing the Optional Lens………………..…….…………………………….……...89

Delta Elec. Inc. EX785_ EW775
Company Confidential Optoma___________________ Delta________________
3 2010/01/05
8.Projection Lamp………………………….…………………………………….…………………..91
9.Cleaning………………………………….…………………………………….…………………...95
10.SERVICE NOTE................................................................................................................ 96
10-1.Service Note Description............................................................................................ 96
10-2.Power & READY LED Blink Code Message................................................................97
10-3.Factory Preset Display Modes.....................................................................................98
11.RS-232 Command……………………………….………….…………………………………..100
12.EDID…………………………………………………………..……………………………….....108
13.RJ45………………………………………………….….……………………………….………126
14.Spare Part List .................................................................................................................130

Delta Elec. Inc. EX785_ EW775
Company Confidential Optoma___________________ Delta________________
4 2010/01/05
1. COMPLIANCE OF SAFE REPAIR
Be sure to read this Service Manual before providing services. In the projector, full
consideration is taken to ensure safety for fire, electric shock, injury, harmful radiation, and
substance. Therefore, observe the notice described in this Service Manual so that safety is
kept when providing services. Moreover, be sure to observe the notice described in the
Instruction Manual.
Pay attention to the following items during service inspection.
1-1 Cautions during disassembling and assembling
1. This equipment contains parts under high voltage. When making repairs, etc.
Be sure to pull out the power plug beforehand to insure safety.
2. Parts may be very hot immediately after use.
Make sure the equipment has cooled off sufficiently before carrying out repairs.
3. Make sure that parts and screws and wiring, etc. are returned to their original positions.
Tube, tape and other insulation materials have been used for safety reasons.
The internal wiring has been designed to avoid direct contact with hot parts or parts under
high voltage when using clamps or other tools.
4. The parts used in this device have special safety features such as flame-resistance and
anti-voltage properties. When replacing parts, always use parts supplied from the factory.
5. After finishing operations make sure that all parts and wires have been returned to their
original position and that there has been no deterioration of the area around the location that
was worked on.
6. Be sure to use a grounding strap (wrist band) during repair and inspection.
1-2 Lamp
During current conduction, the lamp is in the high-temperature state. In this case, pay
careful attention because a high voltage is used. When replacing a lamp, replace it after
confirming that the lamp has gotten cold sufficiently.
1-3 Lens
Do not look into a lens during projection. This damages your eyes.

Delta Elec. Inc. EX785_ EW775
Company Confidential Optoma___________________ Delta________________
5 2010/01/05
1-4 Eye Safety Warnings
1. Avoid staring directly into the projector’s beam of light at all times.
2. Minimize standing facing into the beam.
Keep your back to the beam as much as possible.
3. Ensure that projectors are located out of the line of sight from the screen to the audience;
this ensures that, when presenters look at the audience,
they do not also have to stare at the projector lamp.
5. When projector is used in a classroom, adequately supervise students when
they are asked to point out something on the screen.
6. In order to minimize the lamp power needed,
use room blinds to reduce ambient light levels.

Delta Elec. Inc. EX785_ EW775
Company Confidential Optoma___________________ Delta________________
6 2010/01/05
2. SPECIFICATIONS
2-1. Summary Specifications
Model EX785 (DP-3638) EW775 (DP-7606)
Display type TI DLP DMD 0.7”, 12deg, Type-A, XGA TI DLP DMD 0.65”, 12deg, Type-A, WXGA
Resolution 1024X768 Native (4:3) Native 1280X800 Native (16:10) Native
Brightness Bright: 4400lm(Avg.), 3800lm(Min)
Normal: 3500lm(Avg.), 3000lm(Min)
Bright: 3900lm(Avg.), 3300lm(Min)
Normal: 3200lm(Avg.), 2700lm(Min)
Projection distance 1.5 meters ~ 7 meters
Projection screen size 37” to 215” 34.3” to 200”
Throw ratio (D/W) 1.6 ~ 2 1.62 ~ 2.03
Vertical keystone
correction +/- 30 degrees (depend on input signal)
Projection methods Front / Rear-Desktop & Front / Rear-Ceiling
Data compatibility VGA, S-VGA, XGA, SXGA,WXGA
SDTV/EDTV/ HDTV 480i/576i, 480p/576p, 720p, 1080i, 1080p
Video compatibility NTSC, PAL , SECAM
H-Sync 15, 30 – 91.4 KHz
V-Sync 43 - 87 Hz
Operation temperature 5° ~ 40°C
Dimensions 431 mm (W) x 169 mm (H) x 354 mm (D)
Weight 15 lb (Typical)
AC Input AC Universal 110 ~ 240 @50~60Hz , Typical @110 VAC (100~240)/±10%
Power consumption Typical 390W (normal mode)
Stand By < 1 watts @ 110Vac / 60Hz
Lamp E20.9 / 330W
PC VGA IN x 2 / VGA OUT x 1
Composite video (RCA X 1), S-Video (DIN)
Video Component, RCAx3 (G/B/R)
Digital HDMI x 1, DVI-D
Trigger 12V A / 12V B

Delta Elec. Inc. DP-3638/DP-7606
Company Confidential Optoma ______________________ Delta____________
7 2010/01/04
2-2.DMD Specifications
Unit Min. Ma. Typical Notes
DMD type (EX785) TI DLP DMD 0.7”, 12deg, Type-A, XGA
Number of Columns Pixel 1024
Number of Rows Pixel 768
DMD type (EW775) TI DLP DMD 0.65”, 12deg, Type-A,
WXGA
Number of Columns Pixel 1280
Number of Rows Pixel 800
Panel Operating Temp. ℃10 65
Ambient Temp ℃25
2-3.Color Wheel
Spec. Unit Min. Max. Typical Notes
Color Segment RYGWB 55mm
2-4. Lamp
Description
Vendor OSRAM
Type E20.9 330W
Standard Mode , 1500 Hours Standard, 50% Survival Rate
Lamp Life
ECO Mode , 2000 Hours Typical, 50% Survival Rate
2-5. Terminal connectors
Input
Digital HDMI x 1 / DVI-D
Analog (VGA IN) RGB HD-15 x 2
Analog (VGA OUT) RGB HD-15 x 1
Video Composite video
S-Video Mini dim x 1
Component 1 YPbPr RCA x 3 (G/B/R)
Component 2 BNC x 5 (R/G/B/H/V)
Audio in 3.5mm min jack x 3
Audio in L/R RCA x 2
Audio out 3.5mm min jack x 1
Control
RS-232 DSUB-9 x 1
DC out (screen trigger) DC Jack x 2 (12V±10％; 200mA)
Internet RJ-45
USB USB connector type B

Delta Elec. Inc. DP-3638/DP-7606
Company Confidential Optoma ______________________ Delta____________
8 2010/01/04
2-6. Main Unit View
1. FrontIRreceive 11. LensCap
2. TopCover 12. PowerButton
3. Lens Release Button 13. LED Indicators
4. VerticaI and HorizontaI Lens 14. Input/Output connections
ShiftAdjustmentControI. 15. BackIRReceive
5. Control Panel 16. Power Switch
6. LampCover 17. PowerSocket
7. Tilt-Adjustment foot 18. Security Chain Lock
8. Zoom 19. KensingtonLock
9. Lens
10. Focus

Delta Elec. Inc. DP-3638/DP-7606
Company Confidential Optoma ______________________ Delta____________
9 2010/01/04
2-7. I/O Ports Illustration about Projector
1. Temp LED 14. 12V OUT A/B Connector
2. LampLED 15. AUDIOINL/RRCAYPbPr
3. DVI-D Connector 16. AUDIO IN L/R RCA Video
4. VGA 2 / YPbPr Connector 17. Video Connector
5. HDMI Connector 18. S-Video Connector
6. USB Connector 19. YPbPr Connectors
7. RJ-45 Connector 20. BNC Connectors
8. AUDIOINVGA2 21. PowerSocket
9. VGA Connector 22. Power Switch
10. AUDIOOUT3.5mmJack 23. AUDIOINVGA1
11. BackIRReceiver 24. VGA1/SCART/YPbPrConnector
12. AUDIOINBNC 25. PowerButton
13. RS-232 Connector 26. Power LED

Delta Elec. Inc. DP-3638/DP-7606
Company Confidential Optoma ______________________ Delta____________
10 2010/01/04
2-8. Control panel
1. Source / Left
2. Keystone + / Up
3. Re-Sync / Right
4. Menu
5. Enter/Help
6. Keystone - / Down

Delta Elec. Inc. DP-3638/DP-7606
Company Confidential Optoma ______________________ Delta____________
11 2010/01/04
2-9. Remote Control Parts
Remote Control
1. AV Mute
2. Power On/Off
3. Re-Sync
4. Freeze
5. Keystone
6. Page Up
7. Volume + / -
8. Page Down
9. PC / Mouse Control
10. Mouse Right Click
11. Enter/Help
12. Four Directional Select Keys
13.Format/1
(Number Button for password input)
14. Source / 4
15. Component / 3
16. VGA-1 / 7
17. VGA-2 / 0
18. S-Video / 9
19. BNC / 6
20. Video / 8
21. DVI / 5
22. HDMI / 2
23. Brightness
24. Menu
25. Mouse Left Click
26. Zoom Out
27. Zoom Out
28. Display
29. Laser Pointer

Delta Elec. Inc. DP-3638/DP-7606
Company Confidential Optoma ______________________ Delta____________
12 2010/01/04
Important:
1. Avoid using the projector with bright fluorescent lighting turned on. Certain high-frequency
fluorescent lights can disrupt remote control operation.
2. Be sure nothing obstructs the path between the remote control and the projector. If the path
between the remote control and the projector is obstructed, you can bounce the signal off
certain reflective surfaces such as projector screens.
3. The buttons and keys on the projector have the same functions as the corresponding
buttons on the remote control. This user’s manual describes the functions based on the remote
control.
Remote Control Operating Range
The remote control uses infrared transmission to control the projector. It is not necessary to
point the remote directly at the projector. Provided you are not holding the remote
perpendicular to the sides or the rear of the projector, the remote will function well within a
radius of about 7 meters (23 feet) and 15 degrees above or below the projector level.

Delta Elec. Inc. DP-3638/DP-7606
Company Confidential Optoma ______________________ Delta____________
13 2010/01/04
2-10. Adjusting Projected Image Position Using PureShift

Delta Elec. Inc. DP-3638/DP-7606
Company Confidential Optoma ______________________ Delta____________
14 2010/01/04
Adjusting the vertical image position
The vertical image height can be adjusted between 110% and -10% for XGA, 105% and -15%
for WXGA of image height. Note that the maximum vertical image height adjustment can be
limited by the horizontal image position.
For example it is not possible to achieve the maximum vertical image position height detailed
above if the horizontal image position is at maximum.
Please consult the PureShift Range diagram below for further clarification
EW775 (WXGA)
EX785 (XGA)

Delta Elec. Inc. DP-3638/DP-7606
Company Confidential Optoma ______________________ Delta____________
15 2010/01/04
Adjusting the horizontal image position
With the lens in the center position the horizontal image position can be adjusted to the left
or right by up to a maximum of 10% of the half image width.
Note that the maximum horizontal image height adjustment can be limited by the vertical
image position.
For example it is not possible to achieve the maximum horizontal image position if the vertical
image position is at maximum.
Please consult the PureShift Range diagram below for further clarification.

Delta Elec. Inc. DP-3638/DP-7606
Company Confidential Optoma ______________________ Delta____________
16 2010/01/04
2-11. Pure Shift Range Diagram
EW775 (WXGA)
EX785 (XGA)

Delta Elec. Inc. DP-3638/DP-7606
Company Confidential Optoma ______________________ Delta____________
17 2010/01/04
2-12.
Adjusting Projection Image Size
EX785 (XGA)
STD lens: offset=100%
Long lens: offset=100%

Delta Elec. Inc. DP-3638/DP-7606
Company Confidential Optoma ______________________ Delta____________
18 2010/01/04
Short lens: offset=100%
Adjusting Projection Image Size
EW775 (WXGA)
STD lens: offset=100%

Delta Elec. Inc. DP-3638/DP-7606
Company Confidential Optoma ______________________ Delta____________
19 2010/01/04
Long lens: offset=100%
Short lens: offset=100%

Delta Elec. Inc. DP-3638/DP-7606
Company Confidential Optoma ______________________ Delta____________
20 2010/01/04
2-13. Block Diagram (Main Block)