Optoma Gt750 Xl Projector User Manual

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Installation
Connect to Computer/Notebook
Connecting the Projector
VGA / YPbPrS-VIDEOVIDEO 3D SYNC
Out (5V)
AUDIO-OUT
RS-232
HDMI 1
HDMI 2
AUDIO-IN-R
AUDIO-IN-L
E62405SP
R
1
234
1....................................................................................................Power Cord2...........................................................................................*DVI/HDMI...

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Installation
VGA / YPbPrS-VIDEOVIDEO 3D SYNC
Out (5V)
AUDIO-OUT
RS-232
HDMI 1
HDMI 2
AUDIO-IN-R
AUDIO-IN-L
E62405SP
R
Connect to Video Sources
1....................................................................................................Power Cord2..................................................................................................*HDMI Cable3.........................................................................................VGA/RCA...

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Installation
Powering On/Off the Projector
	Turn on the projector first and then select the signal sources.
Powering On the Projector
1. Remove the lens cap. 
2. Securely connect the power cord and signal cable. When 
connected, the ON/STANDBY LED will turn Amber. 
3. Turn on the lamp by pressing “” button either on the top of 
the projector or on the remote. The ON/STANDBY LED will 
now turn Green. 
 The startup screen will display in approximately 10 seconds. 
The first time you use the...

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Installation
	Contact the nearest service center if the projector displays these symptoms. See pages 54-55 for more information.
Warning Indicator
When the warning indicators (see below) come on, 
the projector will automatically shutdown: 
 “LAMP” LED indicator is lit red and if “On/Standby” indicator 
flashes amber.
 “TEMP” LED indicator is lit red and if “On/Standby” 
indicator flashes amber. This indicates the projector has 
overheated. Under normal conditions, the projector can be...

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Installation
Adjusting the Projected Image
Adjusting the Projector’s Height 
The projector is equipped with elevator feet for adjusting 
the image height.
1. Locate the adjustable foot you wish to modify on the 
underside of the projector. 
2. Rotate the adjustable ring clockwise to raise the projector 
or counter clockwise to lower it. Repeat with the remaining 
feet as needed. 
Tilt-Adjustment Feet
Tilt-Adjustment Ring 

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Installation
Adjusting the Projector’s Focus
To focus the image, rotate the focus ring until the image is clear.  
 WXGA series: The projector will focus at distances from 1.64 
to 16.40 feet (0.5 to 5.0 meters).
Focus Ring
Adjusting Projection Image Size
 WXGA series: Projection Image Size from 34.0” to 322.0” 
(0.8 to 8.2 meters).
Width
Height
Diagonal
Top View
Side View Projection Distance (D)
Projection Distance (D) Screen
Screen
Screen (W)
Screen (H)
Offset (Hd)          

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Installation
 This table is for user’s reference only.
WXGA
Diagonal length (inch) size of 16:10 Screen
Screen Size W x HProjection Distance (D)Offset (Hd)(m)(inch)(m)(feet)
WidthHeightWidthHeightwidewide(m)(feet)
36.30 0.78 0.49 30.78 19.24 0.56 -0.06 0.20 
44.00 0.95 0.59 37.31 23.32 0.68 2.24 0.07 0.24 
60.00 1.29 0.81 50.87 31.80 0.93 3.05 0.10 0.33 
70.00 1.51 0.94 59.35 37.10 1.09 3.56 0.12 0.38 
80.00 1.72 1.08 67.83 42.40 1.24 4.07 0.13 0.44 
90.00 1.94 1.21 76.31 47.69 1.40 4.58 0.15...

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User Controls
Using the Control Panel
POWERRefer to the “Power On/Off the Projector” section on 
pages 13-14.
RE-SYNCAutomatically synchronize the projector to the input 
source.
EnterConfirm your item selection.
SOURCEPress “SOURCE” to select an input signal.
MenuPress “Menu” to launch the on-screen display 
(OSD) menu. To exit OSD, Press “Menu” again.
AV MUTEMomentarily turns off/on the audio and video.
Four Directional 
Select KeysUse     to select items or make adjust-
ments to your...

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User Controls
Remote Control
Using the Remote Control
Power OnRefer to the “Power On” section on page 13.
Power OffRefer to the “Power On/Off the Projector” section on page 14.
ModeSelect the display mode from Cinema, 
Bright, Photo, Reference and User.
4:3-IScale the image at a 4:3-I (960x720) aspect 
ratio.
4:3-IIScale the image at a 4:3-II (1066x800) 
aspect ratio.
16:9Scale the image at a 16:9 (1280x720) aspect 
ratio.
16:10Scale the image at a 16:10 (1280x800) 
aspect ratio.
LBX
Enable the...

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User Controls
Using the Remote Control
EnterConfirm your item selection.
SourcePress “Source” to select an input signal.
Re-syncAutomatically synchronizes the projector 
to the input source.
MenuDisplay or exit the on-screen display 
menus for projector.
HDMI 1Press “HDMI 1” to choose source from 
HDMI 1 connector.
HDMI 2Press “HDMI 2” to choose source from 
HDMI 2 connector.
VGAPress “VGA” to choose source from 
VGA/SCART/YPbPr connector.
S-VideoPress “S-Video” to choose S-Video 
source....