Optoma Ep781 Projector User Manual

							
English
Introduction

Control Panel
1. IR Receiver
2.  Power/Standby LED 
3.  Temp Indicator LED
4.  Lamp Indicator LED
5.  Keystone +/-
6.  Re-Sync
7.  Power/Standby
8.  Four Directional Select Keys
9.  Menu (On/Off)
10.  Source Select
11.  Enter
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Introduction

Connection Ports
1. DVI-D Input Connector (PC Digital/HDTV/HDCP Input)
2.  VGA1-In Connector (PC Analog signal/HD/Component 
Video Input)
3.  Audio Input Connector (For DVI-D or VGA1-In)
4.  S-Video Input Connector
5.  Audio Input Connector (For S-Video or Composite)
6.  Composite Video Input Connector
7.  Networking Connector RJ45
8.  Monitor Loop-through Output Connector
9.  VGA2-In SCART Connector (PC Analog signal/SCART 
RGB/HD/Component Video Input)
10.  Audio Input Connector (For VGA2-In SCART)
11.  Audio Output Connector
12.  RS232 Connector
13.  Power Socket
14.  USB Connector (Connect to PC for Remote Mouse function) 
15.  Kensington
TM Lock Port
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Introduction

Remote Control with Mouse Function and 
Laser Pointer
1. Power
2.  Re-Sync
3.  Keystone Correction
4.  Display Format
5.  Mouse
6.  Mouse Right Click
7.  Page Up
8.  Page Down
9.  Four Directional Select 
Keys
10.  Enter
11.  S-Video Source
12.  Composite Video 
Source
13.  DVI Source
14.  Source Lock
15.  Button LED
16.  Laser Button
17.  AV Mute
18.  Freeze
19.  Display Mode
20.  Mouse Left Click
21.  Zoom In
22.  Zoom Out
23.  Clear 
24.  Menu
25.  VGA1 Source
26.  VGA2 Source
27.  Number Buttons
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Installation

Connecting the Projector
	Due to the difference in applications for each country, some regions may have different accessories.
1.........................................................................\
......................................Power Cord2.........................................................................\
........................................USB Cable3.........................................................................\
................................Network Cable 4.........................................................................\
.....................................RS232 Cable5.........................................................................\
..........................Audio Input Cable6.........................................................................\
........................VGA to VGA Cable7.........................................................................\
............................DVI to DVI Cable8.........................................................................\
.......................Audio Output Cable 
Connect the Computer/Notebook
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VGA
Audio Output (For Active Speakers)
RS232
USB
DVI
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Installation

Connect the Video
	Due to the difference in applications for each country, some regions may have different accessories.
1.........................................................................\
......................................Power Cord2.........................................................................\
.................Composite Video Cable3.........................................................................\
..........................Audio Input Cable
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..................................S-Video Cable 5......................................................VGA to 3 RCA Component/HDTV Adapter6........................................................................RCA Component Cable for YPbPr7.........................................................................\
...................HDMI to DVI Adapter8.........................................................................\
.....................................HDMI Cable9.........................................................................\
........................VGA to VGA Cable10.........................................................................\
..SCART VGA/S-Video Adapter 11.........................................................................\
.....................Audio Output Cable
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S-Video Output
Video Output
DVD Player, Set-top Box, HDTV receiver
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Audio Output (For Active Speakers)
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DVD Player, Set-top Box, HDTV receiver
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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 turn red.
3.  Turn on the lamp by pressing “Power/Standby” button on 
the control panel. And the Power LED will turn green.
4.  Turn on your source (computer, notebook, video player, 
etc.).  The projector will detect your source automatically 
within  “Management” menu; check that “Source Lock” has 
been set to “Off”.
	If the screen displays “No Signal”, please make sure the 
signal cables are securely connected.
	To access the built-in test pattern, please press the “AV 
Mute” button, then up arrow.
	If you connect multiple sources at the same time, use the 
“Source” button on the control panel or direct source key on 
remote control to switch.
Powering On/Off the Projector
	Turn on the projector first and then the signal sources.
Lens Cap
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Power/Standby
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Installation

Warning Indicator
 When the “TEMP” indicator turns red, it indicates the pro-
jector has overheated. The projector will automatically shut 
itself down.   
  When the “LAMP” indicator turns red, it indicates a prob-
lem with the lamp.  Turn off the projector and disconnect the 
power cord from the electrical outlet, then contact your local 
dealer or our service center. See page 45. 
  When the “LAMP” indicator flashes red, it indicates the 
fan has failed.  Stop using the projector and disconnect the 
power cord from the electrical outlet, then contact your local 
dealer or our service center. See page 45. 
Powering Off the Projector
1.   Press the “Power/Standby” button to turn off the projector 
lamp; you will see a message
displayed on the projector’s screen. Press the “Power/
Standby” button again to confirm, otherwise the message 
will disappear after 5 seconds.
2.  The cooling fans continue to operate for about 30 seconds for 
cooling cycle and the Power LED will flash red.  When the 
Power LED stops flashing, the projector has entered standby 
mode.
  Once in standby mode, simply press “Power/Standby” but
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ton to restart the projector.
3.  Disconnect the power cord from the electrical outlet and the 
projector.
4.  Do not turn on the projector immediately following a power 
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Installation

Adjusting the Projected Image
Adjusting the Projector Image Height
Elevator Feet
Elevator Buttons
The projector is equipped with elevator feet for adjusting the 
image height.
 To raise the image:
1.  Press the elevator buttons 
.
2.  Raise the image to the desired height angle 
, then release 
the button to lock the elevator feet into position.
3.  Use screw in feet 
 to fine-tune the display angle. 
 To lower the image:
1.  Press the elevator buttons.
2.  Lower the image, then release the button to lock the eleva
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tor feet into position.
3.  Use screw in foot 
 to fine-tune the display angle.
Tilt Adjusting Foot
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Installation

61.5(156.3cm)
102.5(260.4cm)
143.5(364.6cm)
184.5(468.8cm)
250.2(635.4cm)
24.6(62.5cm)
73.8(187.5cm)
123.0(312.5cm)
172.2(437.5cm)
221.5(562.5cm)
300.2(762.5cm)
3.3(1.0m)
40.0(12.2m)29.5(9.0m)23.0(7.0m)16.4(5.0m)9.8(3.0m)
20.5(52.1cm)
Width
HeightDiagonal
Hd

Focus Ring
Zoom Lever
Adjusting the Projector Zoom / Focus
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  3.3  to  40.0  feet  (1.0  to 
12.2 meters). 
Adjusting Projection Image Size
This graph is for user’s reference only.
Screen(Diagonal)
Max.24.6”(62.5cm)73.8”(187.5cm)123.0”(312.5cm)172.2”(437.5cm)221.5”(562.5cm)300.2”(762.5cm)Min.20.5”(52.1cm)61.5”(156.3cm)102.5”(260.4cm)143.5”(364.6cm)184.5”(468.8cm)250.2”(635.4cm)
Screen 
Size
Max.(WxH)19.68”x 14.76”50.0 x 37.5cm59.04” x 44.28”150.0 x 112.5cm98.4” x 73.8”250.0 x 187.5cm137.76” x 103.32”350.0 x 262.5cm177.20” x 132.90”450.0 x 337.5cm240.16” x 180.12”610.0 x 457.5cmMin.(WxH)16.40” x 12.30”41.7 x 31.3cm49.20” x 36.90”125.0 x 93.8cm82.0” x 61.5”208.3 x 156.2cm114.8” x 86.1”291.7 x 218.8cm147.6” x 110.7”375.0 x 281.3cm200.16” x 150.12”508.3 x 381.2cm
HdMax.2.21” (5.6cm)6.64” (16.9cm)11.07” (28.1cm)15.50” (39.4cm)19.94” (50.6cm)27.02” (68.6cm)Min.1.85” (4.7cm)5.54” (14.1cm)9.23” (23.4cm)12.92” (32.8cm)16.61” (42.2cm)22.52” (57.2cm)
Distance3.3’ (1.0m)9.8’ (3.0m)16.4’ (5.0m)22.3’ (7.0m)29.5’ (9.0m)40.0’ (12.2m)                                
						

							
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User Controls

Control Panel & Remote Control
There are two ways for you to control the functions: Remote 
Control and Control Panel.
Using the Control Panel
 Power/
Standby 
Refer to the “Power On/Off the Projector” section 
on pages 14-15.
 Source Press “Source” to select an input signal.
MenuTurns the menu On or Off.
Four Direc-
tional Select 
Keys
Use     to navigate through the menus.
 Enter Confirm your item selection.
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Keystone
Adjusts image distortion caused by tilting the 
projector (±16 degrees).
 Re-Sync Automatically synchronizes the projector to the 
input source.