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...

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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....

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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...

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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...

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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...

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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...

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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...