Optoma Optoma EP728 User manual

1English
Table of Contents ...................................................................................1
Usage Notice..........................................................................................2
Safety Information .........................................................................................2
Precautions....................................................................................................3
Eye Safety Warnings .....................................................................................5
Introduction.............................................................................................6
Product Features...........................................................................................6
Package Overview.........................................................................................7
Product Overview ..........................................................................................8
Main Unit................................................................................................................ 8
Control Panel ......................................................................................................... 9
Connection Ports ................................................................................................. 10
Remote Control.................................................................................................... 11
Installation ............................................................................................12
Connecting the Projector.............................................................................12
Connect to Computer/Notebook .......................................................................... 12
Connect to Video Sources ................................................................................... 13
Powering On/Off the Projector.....................................................................14
Powering On the Projector................................................................................... 14
Powering Off the projector ................................................................................... 15
Warning Indicator ................................................................................................. 15
Adjusting the Projected Image.....................................................................16
Adjusting the Projector’s Height........................................................................... 16
Adjusting the Projector’s Zoom / Focus ............................................................... 17
Adjusting Projected Image Size ........................................................................... 17
User Controls .......................................................................................18
Control Panel & Remote Control .................................................................18
On-screen Display Menus ...........................................................................21
How to operate .................................................................................................... 21
Menu Tree............................................................................................................ 22
Image ................................................................................................................... 23
Display ................................................................................................................. 29
Setup.................................................................................................................... 33
Options................................................................................................................. 39
Appendices...........................................................................................43
Troubleshooting...........................................................................................43
Image Problems .................................................................................................. 43
Intermission Problems ........................................................................................ 46
Projector Status Indication .................................................................................. 46
Remote Control Problems ................................................................................... 48
Replacing the Lamp.....................................................................................49
Compatibility Modes ....................................................................................51
RS232 Commands ......................................................................................52
Ceiling Mount Installation ............................................................................55
Optoma Global Ofces ................................................................................56
Regulation & Safety notices ........................................................................58
Table of Contents

2
English
Usage Notice
Safety Informations
The lightning ash with arrow head within an equilateral triangle is
intended to alert the user to the presence of uninsulated “dangerous
voltage” within the product’s enclosure that may be of sufcient magni-
tude to constitute a risk of electric shock to persons.
The exclamation point within an equilateral triangle is intended to alert
the user to the presence of import operating and maintenance (servicing)
instructions in the literature accompanying the appliance.
WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT
EXPOSE THE PROJECTOR TO RAIN OR MOISTURE. DANGEROUS HIGH
VOLTAGES ARE PRESENT INSIDE THE ENCLOSURE. DO NOT OPEN THE
CABINET. REFER SERVICING TO QUALIFIED PERSONNEL ONLY.
Class B emissions limits
This Class B digital apparatus meets all requirements of the Canadian Inter-
ference-Causing Equipment Regulations.
Important Safety Instruction
1. Read these instructions –before using this projector.
2. Keep these instructions –for future reference.
3. Follow all instructions.
4. Install in accordance with the manufacturer’s instructions :
A. Do not block any ventilation openings. To ensure reliable
operation of the projector and to protect it from overheating, put the
projector in a position and location that will not interfere with its proper
ventilation. For example, do not place the projector on a bed, sofa,
carpet, or similar surface that may block the ventilation openings. Do not
put it in an enclosure, such as a bookcase or a cabinet that may keep air
from owing through its ventilation openings.
B. Do not use this projector near water or moisture. To reduce
the risk of re or electric shock, do not expose the projector to rain or
moisture.
C. Do not install near any heat sources, such as radiators, heaters,
stoves or other apparatus (including ampliers) that produce heat.
5. Clean only with a dry cloth.
6. Only use attachments/accessories specied by the manufacturer.
7. Refer all servicing to qualied service personnel. Servicing is required
when the projector has been damaged in any way, such as:
Power supply cord or plug is damaged.
Liquids have spilled or objects have fallen into the apparatus.
The projector has been exposed to rain or moisture, does not operate
normally, or has been dropped.
Do not attempt to service this projector yourself. Opening or removing
covers may expose you to dangerous voltages or other hazards. Please
call Optoma to be referred to an authorized service center near you.
8. Do not let objects or liquids enter the projector as they may touch
dangerous voltage points or short-out parts that could result in a re or
electric shock.
9. See projector enclosure for safety related markings.
10. The projector should not be adjusted or repaired by anyone except prop-
erly qualied service personnel.

3English
Usage Notice
When the lamp
reaches the end
of its life, the
projector will
not turn back on
until the lamp
module has
been replaced.
To replace the
lamp, follow
the procedures
listed under
“Replacing the
Lamp” section
on pages 49-50.
Precautions
Please follow all warnings, precautions and
maintenance as recommended in this user’s
guide.
▀■Warning- Do not look into the projector’s lens when the lamp is
on. The bright light may damage your eyes.
▀■Warning- To reduce the risk of  re or electric shock, do not
expose this projector to rain or moisture.
▀■Warning- Please do not open or disassemble the projector as
this may cause electric shock.
▀■Warning- When replacing the lamp, please allow unit to cool
down, and follow all replacement instructions.
See pages 49-50.
▀■Warning- This projector will detect the life of the lamp itself.
Please be sure to change the lamp when it shows
warning messages.
▀■ Warning- Use the “Lamp Reset” function from the on-screen
display “Options|Lamp Settings” menu after
replacing the lamp module (refer to page 42).
▀■Warning- When switching the projector off, please ensure the
cooling cycle has been completed before
disconnecting the power. Allow 90 seconds for the
projector to cool down.
▀■Warning- Do not use the lens cap when projector is in opera-
tion.
▀■Warning- When the lamp is approaching to the end of its life,
the message “Lamp Warning: Lamp life exceeded.”
will show on the screen. Please contact your local
reseller or service center to change the lamp as soon
as possible.
▀■Warning- To reduce the risk of injury to the eyes, do not look
directly into the laser beam on the remote control
and do not point the laser beam into anyone’s eyes.
This remote control is equipped with a Class II laser
that emits radiation.

4
English
Usage Notice
Do:
Turn off the product before cleaning.
Use a soft cloth moistened with a mild detergent to clean the
display housing.
Disconnect the power plug from the AC outlet if the product
is not being used for a long period of time.
Don’t:
Do not block the ventilation slots and openings on the unit.
Do not use abrasive cleaners, waxes or solvents to clean the
unit.
Do not use under the following conditions:
- In extremely hot, cold or humid environments.
- In areas susceptible to excessive dust and dirt.
- Near any appliance that generates a strong magnetic eld.
- In direct sunlight.

5English
Usage Notice
Eye Safety Warnings
▀■Avoid staring directly into the projector’s beam of light at all
times.
▀■Minimize standing facing into the beam. Keep your back to
the beam as much as possible.
▀■Using a stick or laser pointer is recommended to avoid the
need for the presenter to enter the beam.
▀■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 pro-
jector lamp. The best way to achieve this is by ceiling-mount-
ing the projector rather than placing it on oor or table top.
▀■When projector is used in a classroom, adequately supervise
students when they are asked to point out something on the
screen.
▀■In order to minimize the lamp power needed, use room blinds
to reduce ambient light levels.

6
English
Introduction
Product Features
This product is a single chip 0.65” WXGA 1280 x 800 DLP®
projector.
Outstanding features include:
Texas Instruments Single chip DLP® Technology
 Computer Compatibility:
Apple Macintosh, iMac, and VESA Standards:
UXGA, SXGA+, SXGA, WXGA, XGA, SVGA, VGA
 Video Compatibility:
■NTSC, NTSC4.43
■PAL/PAL-M/PAL-N/SECAM
■SDTV compatible (480i/p, 576i/p)
■HDTV compatible (720p, 1080i/p)
Auto source detection with user denable settings
Full function IR remote control with laser pointer and
mouse control
User friendly multilingual On Screen Menu
Advanced digital keystone correction and high quality
full screen image re-scaling
User friendly control panel
One built-in speaker with 1 watt amplier
Macintosh and PC compatible
DVI-I support (HDCP compliant)

7English
Introduction
Power Cord 1.8m
IR Remote Control
Package Overview
This projector comes with all the items shown
below. Check to make sure your unit is complete.
Contact your dealer immediately if anything is
missing.
Due to the
difference in
applications for
each country,
some regions may
have different
accessories.
Projector with lens cap VGA Cable 1.8m
Y-type Cable 100mm
(Available in EMEA and
ASIA version only)
USB Cable 1.8m
(Available in EMEA only)
15-Pin to 3 RCA Component/
HDTV Adaptor
(Available in USA only)
DVI-D Male to
HDMI Female Adapter
(Available in USA only)
Documentation :

User’s Manual

Warranty Card

Quick Start Card

WEEE Card
2 x AAA Batteries
Carrying Case

8
English
Introduction
1. Control Panel
2. Zoom
3. Focus
4. Zoom Lens
5. Elevator Button
Main Unit
Product Overview
6. Elevator foot
7. IR Receivers
8. Connection Ports
9. Power Socket
10. Tilt-Adjustment Foot
8
9
10
7
6
5
1
2
3
4
7

9English
Introduction
Control Panel
1. Enter
2. Menu
3. Power
4. AV Mute
5. Source
6. Re-Sync
7. Four Directional Select Keys
8. Temp LED
9 Lamp LED
10. Power LED
2
7
4
3
10 9
56
1
8

10
English
Introduction
Connection Ports
1. USB Connector (Connect to PC for Remote Mouse function)
2. RS-232 Connector
3. Audio Input Connector
4. S-Video Input Connector
5. DVI-I Input Connector
(PC Digital (HDCP)/PC Analog/Component Video Input)
6. VGA In/SCART Connector (PC Analog Signal/Component
Video Input, HDTV/SCART Input)
7. VGA Output Connector (Monitor Loop-through Output)
8. Power Socket
9. KensingtonTM Lock Port
1
234567
8 9

11 English
Introduction
Remote Control
1. Button LED
2. Power On/Off
3. Laser Button
4. Page Up
5. Mouse Right Click
6. Four Directional
Select Keys
7. Re-Sync
8. Page Down
9. Volume +/-
10. Zoom
11. AV mute
12. Video Source
13. VGA Source
14. Freeze
15. S-Video Source
16. DVI Source
17. Brightness
18. Menu
19. Keystone +/-
20. Source
21. Enter
22. Mouse Left Click
23. PC/Mouse control
24. Number Buttons
(for password input)
1
10
11
1314
3
2
23
15
16
17
19
20
8
21
22
4
7
18 9
12
5
6
24

12
English
Installation
Connecting the Projector
Due to the
difference in
applications for
each country,
some regions may
have different
accessories.
Connect to Computer/Notebook
1...............................................................................................................Power Cord
2................................................................................................................VGA Cable
3.........................................................DVI-I to VGA Cable (Optional accessories)
4........................................................... Audio Input Cable (Optional accessories)
5.......................................................................RS232 Cable (Optional accessories)
6..........................................................................USB Cable (Optional accessories)
1
3
24
6
5

13 English
Installation
Connect to Video Sources
S-Video Output
DVD Player, Set-top Box,
HDTV receiver
1...............................................................................................................Power Cord
2......................................SCART RGB/S-Video Adaptor (Optional accessories)
3................................................................... S-Video Cable (Optional accessories)
4....................................................15-Pin to 3 RCA Component/HDTV Adaptor
5...................................................Composite Video Cable (Optional accessories)
6...........................................................Y-Type of Composite to S-Video Adaptor
7................................................3 RCA Component Cable (Optional accessories)
8...................................................Audio Cable Jack/RCA (Optional accessories)
6
2
3
5
Due to the
difference in
applications for
each country,
some regions may
have different
accessories.
4
Video Output
1
7
8
8

14
English
Installation
Powering On the Projector
1. Remove the lens cap. 
2. Ensure that the power cord and signal cable are securely
connected.  The Power LED will be Amber.
3. Turn on the lamp by pressing “Power” button either on the
top of the projector or on the remote. The Power LED will
ash green.
The startup screen will display in approximately 10 seconds.
The rst time you use the projector, you can select your
preferred language from quick menu after the startup screen
display.
4. Turn on your source (computer, notebook, video player,
etc.). The projector will detect your source automatically.
If you connect multiple sources at the same time, press
the “Source” button on the control panel or direct source
key on the remote control to switch between inputs.
Powering On/Off the Projector
Turn on the
projector rst and
then select the
signal sources.
2Power
Lens Cap
1
Power LED

15 English
Installation
Warning Indicator
 When the “LAMP” indicator lights red, the projector will
automatically shut itself down. Please contact your local
reseller or service center. See pages 56-57.
 When the “TEMP” indicator lights red, it indicates the
projector has overheated. The projector will automatically
shut itself down.
Under normal conditions, the projector can be switched on
again after it has cooled down. If the problem persists, you
should contact your local dealer or our service center.
See pages 56-57.
 When the “TEMP” indicator ashes red, it indicates the fan
has failed. Please contact your local dealer or our service
center. See pages 56-57.
Powering Off the Projector
1. Press the “Power” button to turn off the projector lamp,
you will see a message displayed on the projector’s screen.
2. Press the “Power” button again to conrm,
otherwise the message will disappear after 15 seconds.
When you press “Power” button second, the system will
show the timing countdown on the screen.
3. The cooling fans continue to operate for about 10 seconds
for cooling cycle. When the Power LED turn Amber, the
projector has entered standby mode.
If you wish to turn the projector back on, you must wait
until the projector has completed the cooling cycle and
has entered standby mode. Once in standby mode, simply
press “Power” button to restart the projector.
4. Disconnect the power cord from the electrical outlet and
the projector.
5. Do not turn on the projector immediately following a
power off procedure.

16
English
Installation
Adjusting the Projected Image
Adjusting the Projector’s Height
The projector is equipped with elevator foot for
adjusting the image height.
To raise the image:
1. Press the elevator button .
2. Raise the image to the desired height angle , then release
the button to lock the elevator foot into position.
3. Use screw in foot  to ne-tune the display angle.
To lower the image:
1. Press the elevator button.
2. Lower the image, then release the button to lock the
elevator feet into position.
3. Use screw in foot  to ne-tune the display angle.
Tilt-Adjustment Foot Elevator Foot Elevator Button
31
2

17 English
Installation
Focus Ring
Zoom Ring
Adjusting the Projector’s Zoom / Focus
Adjusting Projection Image Size
You may turn the zoom lever to zoom in or out. To focus the
image, rotate the focus ring until the image is clear. The projector
will focus at distances from 3.9 to 39.4 feet (1.2 to 12.0 meters).
Hd
81.9"
(208.1cm)
136.6"
(346.8cm)
191.2"
(485.6cm)
245.8"
(624.3cm)
327.7"
(832.4cm)
35.9"
(91.3cm)
89.9"
(228.2cm)
149.8"
(380.4cm)
209.7"
(532.6cm)
269.6"
(684.7cm)
359.4"
(913.0cm)
32.8"
(83.2cm)
3.9'(1.2m)
39.4'(12.0m)
29.5'(9.0m)
23.0'(7.0m)
16.4'(5.0m)
9.8'(3.0m)
Width
Height
Diagonal
Screen
(Diagonal)
Max. 35.9” (91.3cm) 89.9” (228.2cm) 149.8” (380.4cm) 209.7” (532.6cm) 269.6” (684.7cm) 359.4” (913.0cm)
Min. 32.8” (83.2cm) 81.9” (208.1cm) 136.6” (346.8cm) 191.2” (485.6cm) 245.8” (624.3cm) 327.7” (832.4cm)
Screen
Size
Max.
(WxH)
30.5” x 19.1”
77.4 x 48.4cm
76.2” x 47.6”
193.5 x 121.0cm
127.0” x 79.4”
322.6 x 201.6cm
177.8” x 111.1”
451.6 x 282.3cm
228.6” x 142.6”
580.6 x 362.9cm
304.8” x 190.5”
774.2 x 483.9cm
Min.
(WxH)
27.8” x 17.4”
70.6 x 44.1cm
69.5” x 43.4”
176.5 x 110.3cm
115.8” x 72.4”
294.1 x 183.8cm
162.1” x 101.3”
411.8 x 257.4cm
208.4” x 130.3”
529.4 x 330.9cm
277.9” x 173.7”
705.9 x 441.2cm
Hd Max. 2.4” (6.0cm) 5.9” (15.0cm) 9.8” (25.0cm) 13.8” (35.0cm) 17.7” (45.0cm) 23.6” (60.0cm)
Min. 2.2” (5.5cm) 5.4” (13.7cm) 9.0” (22.8cm) 12.6” (31.9cm) 16.2” (41.0cm) 21.5” (54.7cm)
Distance 3.9’ (1.2m) 9.8’ (3.0m) 16.4’ (5.0m) 23.0’ (7.0m) 29.5’ (9.0m) 39.4’ (12.0m)
This graph is for user’s reference only.

18
English
User Controls
Control Panel
Control Panel & Remote Control
There are two ways for you to control the functions:
Control Panel and Remote Control.
Using the Control Panel
Power Refer to the “Power On/Off the Projector” section
on pages 14-15.
Menu Press “Menu” to launch the on-screen display
(OSD) menu. To exit OSD, Press “Menu” again.
Enter Conrm your item selection.
AV Mute Momentarily turns off/on the audio and video.
Source Press “Source” to select an input signal.
Re-Sync Automatically synchronizes the projector to the
input source.
Four Directional
Select Keys
Use to select items or make adjustments
to your selection.
Power LED Indicate the projector’s status.
Lamp LED Indicate the projector’s lamp status.
Temp LED Indicate the projector’s temperature status.

19 English
User Controls
Using the Remote Control
Power
Refer to the “Power On/Off the Projector”
section on pages 14-15.
Laser
Aim the remote at the viewing screen, press
and hold this button to activate the laser
pointer.
PC/Mouse
control
The PC/Mouse control can be used to con-
trol mouse movement. The mouse function
is enabled using the USB cable to connect
your computer and the projector.
L Button Mouse left click.
R Button Mouse right click.
Page + Use this button to page up.
Page - Use this button to page down.
Enter Conrm your item selection.
Source Press “Source” to select an input signal.
Re-Sync Automatically synchronizes the projector to
the input source.
Four
Directional
Select Keys
Use to select items or make ad-
justments to your selection.
Keystone +/- Adjust image distortion caused by tilting
the projector. (±18 degrees)
Volume +/- Adjust to increase/decrease the volume.
Brightness Adjust the brightness of the image.
Remote Control

20
English
User Controls
Using the Remote Control
Menu
Press “Menu” to launch the on-screen
display (OSD) menu. To exit OSD, Press
“Menu” again.
Zoom Press “+/-” button to zoom in of an image.
DVI Press “DVI” to choose DVI source.
VGA Press “VGA” to choose source from VGA-
IN connector.
AV Mute Momentarily turns off/on the audio and
video.
S-Video Press “S-Video” to choose S-Video source.
Freeze Press “Freeze” to pause the screen image.
Video
Press “Video” to choose Composite video
source. This function is only available when
the projector is connected to a video via a
Y-type cable.
Remote Control