Optoma Ep747 Projector User Manual

							
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User Controls

 Display Mode
There are many factory presets optimized for various types of im-
ages.
 PC: For computer or notebook. (brightest image)
 Photo: For optimum colour at high brightness.
 Video 
 Cinema: For home theater.
 sRGB: For standard PC colour. (best colour reproduction)
 User: Memorize user’s settings.
 Brightness
Adjust the brightness of the image.
 Press the  to darken image.
 Press the  to lighten the image.
 Contrast
The contrast controls the degree of difference between the lightest 
and darkest parts of the picture. Adjusting the contrast changes the 
amount of black and white in the image.
 Press the  to decrease the contrast.
 Press the  to increase the contrast.
 White Peaking
Use the white peaking control to set the white peaking level of 
DMD chip. 0 stands for minimal peaking, and 10 stands for maxi-
mum peaking.  If you prefer a brighter image, adjust towards the 
maximum setting.  For a smooth and more natural image, adjust 
towards the minimum setting.
Image-I 
						

							
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User Controls

 Colour Temp.
Adjusts the colour temperature. At higher temperature, the screen 
looks colder; at lower temperature, the screen looks warmer. 
 Saturation
Adjusts a video image from black and white to fully saturated 
colour.
 Press the  to decrease the amount of saturation in the image.
 Press the  to increase the amount of saturation in the image.
 Sharpness 
Adjusts the sharpness of the image.
 Press the  to decrease the sharpness.
 Press the  to increase the sharpness. 
						

							
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User Controls

 Frequency
“Frequency” changes the display data frequency to match the fre-
quency of your computer’s graphic card. If you experience a vertical 
flickering bar, use this function to make an adjustment.
 Phase
“Phase” synchronizes the signal timing of the display with the 
graphic card. If you experience an unstable or flickering image, use 
this function to correct it.
 Hor. Position (Horizontal Position)
 Press the  to move the image left.
 Press the  to move the image right. 
 Ver. Position (Vertical Position)
 Press the  to move the image down.
 Press the  to move the image up.
 Degamma
This allows you to choose a degamma table that has been fine-tuned 
to bring out the best image quality for the input.
 Aspect Ratio
Use this function to choose your desired aspect ratio.
 4:3 : The input source will be scaled to fit the projection screen. 
 16:9 : The input source will be scaled to fit the width of the 
screen.
 LBX: This format is for non-16x9, letterbox source and for users 
who use external 16x9 lens to display 2.35:1 aspect ratio using 
full resolution. 
 Window: When a 4:3 image is bigger than a 16:9 screen, select 
the “Window” mode to fit the image onto the screen without 
changing the projection distance.
Image-II 
						

							
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User Controls

 Ver. Shift (16:9)
Adjust the image position up or down, when you select the aspect 
ratio of 16:9.
 Press the  to move the image down.
 Press the  to move the image up.
Input Signal
Display area
Picture area
Display on Screen
 Ver. Shift (16:9): Image Position at window mode will also be moved ac-cordingly. 
						

							
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User Controls

 Colour Adjustment
Adjust the Red, Green, Blue, Yellow, Cyan and Magenta colors for 
advanced adjustment of the individual colors.
Colour 
Adjustment
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 translu-
cent screen with ceiling mounted projection.
 Keystone (Keystone Correction)
Adjusts image distortion caused by tilting projector. (±15 degrees)
 Source Lock
 Auto: The projector will search for other signals if the current 
input signal is lost. 
 Lock: The projector will search specified connection port. 
 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

Management
 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.  
 Translucence
Choose the menu transparency on the display screen.
 Volume
 Press  to decrease the volume.
 Press  to increase the volume.
 Treble
The treble setting controls the higher frequencies of your audio 
source. 
 Press  to decrease the treble.
 Press  to increase the treble.
 Bass
The bass setting controls the lower frequencies of your audio
source. 
 Press  to decrease the bass.
 Press  to increase the bass.
 Reset
Return the adjustments and settings to the factory default values.
 Execute: Returns the settings for all menus to factory default 
values. 
 Cancel: Cancel the revised settings.  
						

							
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User Controls

 Projector ID
Allows RS232 control of an individual projector. Range 01-99.
 Security 
 Security Timer: Can be select the time (month/day/hour) func-
tion to set the number of hours the projector can be used. Once 
the time has elapsed you will be requested to enter your pass-
word again. 
 Change Password
Use number buttons to select your password, and then press 
“Enter” key to confirm your selection.
1. Scroll down to highlight Change Password, and press “Enter” 
to input old password.
2.  The Password is 4 digits, DEFAULT VALUE is “0000” (first 
time).
3.  Enter new Password (4 digits) and press “Enter”.
4.  Enter new Password again to confirm and press “Enter”.
 Security
■ Enable: Choose “Enable” to use security verification when the 
turning on the projector.
■ Disable: Choose “Disable“ to be able to switch on the projector 
without password verification. 
						

							
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User Controls

Lamp Setting
 Projection Hours
Displays the projection time.
 Lamp Hours
Displays the cumulative lamp operating time.
  Reset Lamp Hours
Resets the lamp life hour counter after replacing the lamp. 
 Lamp Reminding
Choose this function to show or to hide the warning message 
when the changing lamp message is displayed. The message will 
appear 30 hours before end of life.
 ECO 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 normal mode.
 Auto Power Off
Sets the countdown timer interval. The countdown timer will start 
to count when no signal is being input to the projector. Then pro-
jector will auto power off when countdown is finished.
 Sleep Timer
Sets the countdown timer interval. No matter if there is signal or 
none, projector will auto power off when sleep timer countdown 
is finished. 
						

							
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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 “Sync” on the remote control or press “Re-Sync” 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 1400 x 1050.
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 1400 x 1050 
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 38 for details.