Optoma Ep728i Projector User Manual

							
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)
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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 Cord2................................................................................................................VGA Cable3.........................................................DVI-I to VGA Cable (Optional accessories)4...........................................................Audio Input Cable (Optional accessories)5.......................................................................RS232 Cable (Optional accessories)6.................................................................................................................USB Cable
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Installation

Connect to Video Sources
S-Video Output
DVD Player, Set-top Box, HDTV receiver
1...............................................................................................................Power Cord2......................................SCART RGB/S-Video Adaptor (Optional accessories)3...................................................................S-Video Cable (Optional accessories)4............15-Pin to 3 RCA Component/HDTV Adaptor (Optional accessories)5...................................................Composite Video Cable (Optional accessories)6...........................................................Y-Type of Composite to S-Video Adaptor7................................................3 RCA Component Cable (Optional accessories)8...................................................Audio Cable Jack/RCA (Optional accessories)
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	Due to the  difference in applications for each country, some regions may have different accessories.
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Video Output
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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 
flash green.
  The startup screen will display in approximately 10 seconds. 
The first 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 first and then select the signal sources.
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Lens Cap1
Power LED 
						

							
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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 54-55. 
  When the “TEMP” indicator lights red, it indicates the pro-
jector 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 54-55. 
 When the “TEMP” indicator flashes red, it indicates the fan 
has failed. Please contact your local dealer or our service 
center. See pages 54-55. 
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 confirm,  
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. 
						

							
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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 fine-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 fine-tune the display angle.
Tilt-Adjustment FootElevator FootElevator Button
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 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). 
68.8(174.8cm)
114.7(291.4cm)
160.6(407.9cm)
206.5(524.5cm)
275.3(699.3cm)
30.3(76.9cm)
75.7(192.3cm)
126.2(320.5cm)
176.7(448.7cm)
227.1(576.9cm)
302.9(769.2cm)
3.9(1.2m)
39.4(12.0m)29.5(9.0m)23.0(7.0m)16.4(5.0m)9.8(3.0m)
27.5(69.9cm)
Width
Height
Diagonal
Hd
Screen(Diagonal)
Max.30.3” (76.9cm)75.7” (192.3cm)126.2” (320.5cm)176.7” (448.7cm)227.1” (576.9cm)302.9” (769.2cm)
Min.27.5” (69.9cm)68.8” (174.8cm)114.7” (291.4cm)160.6” (407.9cm)206.5” (524.5cm)275.3” (699.3cm)
ScreenSize
Max.(WxH)24.2” x 18.2”61.5 x 46.2cm60.6” x 45.4”153.8 x 115.4cm101.0” x 75.7”256.4 x 192.3cm141.3” x 106.0”359.0 x 269.2cm181.7” x 136.3”461.5 x 346.2cm242.3” x 181.7”615.4 x 461.5cm
Min.(WxH)22.0” x 16.5”55.9 x 42.0cm55.1” x 41.3”139.9 x 104.9cm91.8” x 68.8”233.1 x 174.8cm128.5” x 96.4”326.3 x 244.8cm165.2” x 123.9”419.6 x 314.7cm220.3” x 165.2”559.4 x 419.6cm
HdMax.2.73” (6.9cm)6.81” (17.3cm)11.36” (28.8cm)15.9” (40.4cm)20.44” (51.9cm)27.26” (69.2cm)
Min.2.48” (6.3cm)6.19” (15.7cm)10.32” (26.2cm)14.45” (36.7cm)18.58” (47.2cm)24.78” (62.9cm)
Distance3.9’ (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. 
						

							
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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
PowerRefer to the “Power On/Off the Projector” section 
on pages 14-15.
MenuPress “Menu” to launch the on-screen display 
(OSD) menu. To exit OSD, Press “Menu” again.
EnterConfirm your item selection.
AV MuteMomentarily turns off/on the audio and video.
SourcePress “Source” to select an input signal.
Re-SyncAutomatically synchronizes the projector to the 
input source.
Four Directional 
Select Keys
Use     to select items or make adjustments 
to your selection.
  Power LEDIndicate the projector’s status.
  Lamp LEDIndicate the projector’s lamp status.
   Temp LEDIndicate the projector’s temperature status.  
						

							
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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 ButtonMouse left click.
R ButtonMouse right click.
Page +Use this button to page up.
Page -Use this button to page down.
Enter Confirm your item selection.
SourcePress “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 +/-Adjusts image distortion caused by tilting 
the projector. (±18 degrees)
Volume +/-Adjusts to increase/decrease the volume.
Brightness Adjust the brightness of the image.
Remote Control 
						

							
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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.
DVIPress “DVI” to choose DVI source.
VGAPress “VGA” to choose source from VGA-
IN connector.
AV MuteMomentarily turns off/on the audio and 
video.
S-VideoPress “S-Video” to choose S-Video source.
FreezePress “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