Optoma Ep781 Projector User Manual

							
English
2
User Controls

Language
 
Language
Choose the multilingual OSD menu. Use the   or  key to select 
your preferred language. 
Press “Enter” to finalize the selection.     
						

							
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User Controls

 Menu Location
Choose the menu location on the display screen. 
 Projection
 Front-Desktop
The factory default setting.
  Rear-Desktop
When you select this function, the projector reverses the 
image so you can project from behind a translucent screen.
  Front-Ceiling
When you select this function, the projector turns the image 
upside down for ceiling-mounted projection.
  Rear-Ceiling
When you select this function, the projector reverses and 
turns the image upside down. You can project from behind 
a translucent screen with ceiling mounted projection.
 Source Lock
 Auto: The projector will search all connection port.
 Lock: The projector will lock connection port. 
  Horizontal Keystone
Press  the   or   to  adjust  image  distortion  horizontally  and  makes 
a squarer image.
 Vertical Keystone
Press  the   or   to  adjust  image  distortion  vertically  and  makes  a 
squarer image.
 Zoom
 Press the  to reduce the size of an image.
 Press the  to magnify an image on the projection screen.
Management     
						

							
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User Controls

 
PIP
Choose “On” to select on the PIP screen, Choose “Off” to sel\
ect off 
the PIP screen.
 PIP Position
Choose the PIP screen position on the display screen.
 PIP Source Switch
Press “Enter” to switch PIP screen source. (see page 32)
Management
 Volume
 Press  to decrease the volume.
 Press  to increase the volume.
 RS232 Port
 RS232: Allows RS232 control of an individual projector. 
 Network: Allows LAN via web browser (Internet Exploer) to 
control of projector.
 Reset
Choose “Enter” to return the adjustments and settings to the facto\
ry 
default values.
Top-Left
Bottom-Left
Top-Right
Bottom-Right    
						

							
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User Controls

PIP RULE TABLE
Sub source
Main source   DVI-DVGAComponet-pS-videoVideo
DVI-D (digital RGB / HDCP)
VGA (analog RGB)
Componet-p (480p/576p/720p/1080i)
S-video
Video
 Logo
Use this function to select your desired startup screen. If you change 
the setting from one to another, when you exit the OSD menu, the 
new setting will take effect on next open. 
 Optoma: The default startup screen of Optoma projector.
 User: Use memorize picture from “Logo Capture” function.
  Logo Capture
Press “Enter” to immediately capture a picture what on the display\
 
screen.
 Security Settings
■ First Time:
1.  Press “Enter” to set password.
2.	 The	Password	is	4	digits,	DEFAULT	VALUE	is	“0000”.	( first	time)
3.   Use 
number buttons on the remote to select your password, and then 
press	“Enter”	key	to	confirm	your	selection.
 Security Timer: Can be select the time (month/day/hour) 
function to set the number of hours the projector can be 
used. Once this time has elapsed you will be requested to 
enter your password again (Use number buttons on remote. 
To change password, follow change password instructions 
above).
 Change Password:
1.  Press “Enter” to input old password.       
						

							
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User Controls

PIP RULE TABLE
Sub source
Main source   DVI-DVGAComponet-pS-videoVideo
DVI-D (digital RGB / HDCP)
VGA (analog RGB)
Componet-p (480p/576p/720p/1080i)
S-video
Video
 Logo
Use this function to select your desired startup screen. If you change 
the setting from one to another, when you exit the OSD menu, the 
new setting will take effect on next open. 
 Optoma: The default startup screen of Optoma projector.
 User: Use memorize picture from “Logo Capture” function.
  Logo Capture
Press “Enter” to immediately capture a picture what on the display\
 
screen.
 Security Settings
■ First Time:
1.  Press “Enter” to set password.
2.	 The	Password	is	4	digits,	DEFAULT	VALUE	is	“0000”.	( first	time)
3.   Use 
number buttons on the remote to select your password, and then 
press	“Enter”	key	to	confirm	your	selection.
 Security Timer: Can be select the time (month/day/hour) 
function to set the number of hours the projector can be 
used. Once this time has elapsed you will be requested to 
enter your password again (Use number buttons on remote. 
To change password, follow change password instructions 
above).
 Change Password:
1.  Press “Enter” to input old password.
2. Use number button to enter current password, and then 
press “Enter” key again to reveal next OSD menu.
3.  Scroll down to highlight Password, and then press “En
-
ter” to activate.
4.  Enter new password (4 digits in length) using the number 
buttons on the remote, then press “Enter” to confirm.
5.   Enter new password again and press “Enter” to confirm.
 Security settings:
Enable: Choose “Enable” to enable security verification when 
turning on the projector.
Disable: Choose “Disable” to be able to switch on the 
projector without password verification.
 LAN
Press “Enter” to apply LAN settings. If the connection is successf\
ul, 
the OSD display will show the following dialogue box.
 Network State: To display network information. 
 DHCP: 
 Enable: Assign an IP address to the projector from the DHCP 
server automatically.
 Disable: Assign an IP address manually. 
 IP Address: Select an IP address.
 Subnet Mask: Select subnet mask number.
 Gateway: Select the default gateway of the network connected to 
the projector.
 DNS: Select DNS number.
 Apply: Press “Enter” to apply the selection.
 Information
To display source information on the screen.        
						

							
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User Controls

1. Fill  in  a  new  IP,  a  subnet  mask,  a  gateway  and  a  DNS  in  the 
dialogue box .
2. Then  choose  apply  and  press  "Enter"  botton  to  effectuate  the 
configuration process.
3.  Open your web browser and type in from the OSD LAN screen 
then the web page will display as below:
4: Open "Control Panel" to control your projector. 
 
How to use web browser to control your projector
	When you used the projector IP address, you will can not link to your service 
server.         
						

							
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User Controls

For example: Use Microsoft Internet Explorer (IE) web browser to contr\
ol the projector 
, the IP address is http: // 10.0.50.100.
Step 1: Find an IP Address (10.0.50.100) from LAN function of projector.
Step 2: Select apply and press "Enter" button to submit function or pres\
s "menu" key to 
exit.
Step 3: To open Network Connections, click Start, click Control Panel, click Network and Internet Connections, and then click Network Connections. Click the connection you want to configure, and then, under Network Tasks   , click Change settings of this connection.
Step 4: On the General tab, under This 
connection uses the following 
items, click Internet Protocol 
(TCP/IP), and then click 
"Properties."
Step 5: Click Use the following IP 
address, and type in as below:
1)	IP	address:	10.0.50.XXX	
2)	Subnet	mask:	255.255.0.0
3)	Default	gateway:	10.0.50.254
Step 6: To open Internet Options, click IE web browser, click Internet 
Options, click the Connections tab and click "LAN Settings." 
 
Step 7: The Local Area Network (LAN) 
Setting dialog box appears, In the Proxy Server area, cancel the Use a proxy server for your LAN check box., then click "OK" button 
twice.
Step 8: Open your IE and type in the IP 
address of 10.0.50.100 in the URL 
then press "Enter" key. The web 
page will display as below:
Step 9: Open "Control Panel" to control 
your projector.                
						

							
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User Controls
Lamp & Power
 STD Mode
Choose “On” to dim the projector lamp which will lower power 
consumption and extend the lamp life by up to 130%. Choose 
”Off” to return to BRIGHT mode.
 High Altitude
Choose “On” to turn on High Altitude mode. Operates the fans at 
full speed continuously to allow for proper high altitude cooling of 
the projector.
  Auto Power Off (min)
Sets the countdown timer interval. The countdown timer will start, 
when there is no signal being sent to the projector. Then projector 
will automatically power off when the countdown has finished. (In 
minutes)
 Sleep Timer (min)
Sets the countdown timer interval. The timer will begin, with 
or without a signal input. Then the projector will automatically 
power off then the sleep timer countdown has finished. (In 
minutes)
 Projection Hour
Displays the projection time.
 Lamp Hours
Displays the cumulative lamp operating time.
 Lamp Reset 
Resets the lamp life hour counter after replacing the lamp.      
						

							
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Appendices
Problem: No image appears on screen
 Ensure all the cables and power connections are correctly and 
securely connected as described in the “Installation” section.
 Ensure the pins of connectors are not crooked or broken.
 Check if the projection lamp has been securely installed. Please 
refer to the “Replacing the lamp” section.
 Make sure you have removed the lens cap and the projector is 
switched on.
 Ensure that the “AV Mute” feature is not turned on.
Problem: Left of right edge of the image is missing or the im-
age is unstable or noisy
 Press “Re-Sync” on the remote control or on control panel.
 If you are using a PC:
For Windows 3.x:
1.  In the Windows Program Manager, double click the “Windows 
Setup” icon in the Main group.
2.  Verify that your display resolution setting is less than 
or equal 
to 1600 x 1200.
For Windows 95, 98, 2000, XP:
1. From the “My Computer” icon, open the “Control Panel” 
folder, and double click the “Display” icon.
2.  Select the “Settings” tab. 
3.  Click on the “Advanced Properties” button.
If the projector is still not projecting the whole image, you will 
also need to change the monitor display you are using. Refer to 
the following steps.
4. Verify the resolution setting is less than or equal to 1600 x 1200 
resolution.
Troubleshooting
If	you	experience	trouble	with	the	projector,	refer	to	the	follow-
ing	information.		If	the	problem	persists,	please	contact	your	
local	reseller	or	service	center,	see	page	45	for	details.  
						

							
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Appendices

5. Select the “Change” button under the “Monitor” tab.
6.  Click on “Show all devices.” Next, select “Standard monitor 
types” under the SP box; choose the resolution mode you need 
under the “Models” box. 
 If you are using a Notebook:
1.  First, follow the steps above to adjust resolution of the 
computer.
2.  Press the toggle output settings. example: [Fn]+[F4]
Compaq   
[Fn]+[F4]
Dell    [Fn]+[F8]
Gateway   [Fn]+[F4]
IBM     [Fn]+[F7]
Mac Apple: System Preference  Display  Arrangement  Mirror display
Packard  
  [Fn]+[F4]Hewlett 
NEC    [Fn]+[F3]
Toshiba    [Fn]+[F5]
 If you experience difficulty changing resolutions or your monitor 
freezes, restart all equipment including the projector.
Problem: The screen of the Notebook or PowerBook computer 
is not displaying a presentation
 If you are using a Notebook PC:
Some Notebook PCs may deactivate their own screens when a 
second display device is in use. Each has a different way to be 
reactivated.  Refer to your computer’s documentation for detailed 
information.
Problem: Image is unstable or flickering
 Use “Phase” to correct it. (See page 25)
 Change the monitor colour setting on your computer.
Problem: Image has vertical flickering bar
 Use “Frequency” to make an adjustment.  (See page 25)
 Check and reconfigure the display mode of your graphic card to 
make it compatible with the product. 
Problem: Image is out of focus
 Adjust the Focus Ring on the projector lens.