Optoma Gt720 Projector User Manual

11English
Installation
Connect to Computer/Notebook
Connecting the Projector
VGA-IN / YPbPr /S-VIDEO VIDEO
AUDIO-OUT
RS-232
HDMIRCA-R
RCA-L
E62405SP
R
1
234
1. ................................................................................................... Power Cord
2. .......................................................................................... *DVI/HDMI Cable
3. .................................................................................................... VGA Cable
4....

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English
Installation
VGA-IN / YPbPr /S-VIDEO VIDEO
AUDIO-OUT
RS-232
HDMIRCA-R
RCA-L
E62405SP
R
Connect to Video Sources
1. ................................................................................................... Power Cord
2. ................................................................................................. *HDMI Cable
3. ............................................... *15-Pin to 3 RCA Component/HDTV Adaptor
4....

13English
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...

14
English
Installation
	 Contact the 
nearest service 
center if the 
projector displays 
these symptoms. 
See pages 
53-54 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...

15English
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 rings clockwise/anticlockwise to  lower or raise the projector. Repeat with the remaining feet 
as needed.
Tilt-Adjustment Feet
Tilt-Adjustment Ring 

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English
Installation
Adjusting the Projector’s Focus
To focus the image, rotate the focus ring until the image is clear.  
 SVGA series: The projector will focus at distances from 1.64 
to 18.05 feet (0.5 to 5.5 meters).
 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
Hd
297.8
(756.3cm)
27.1 
(68.8cm) 54.1
(137.5cm) 135.3
(343.8cm) 189.5
(481.3cm) 243.6
(618.8cm)
1.64 (0.50m)
18.05(5.50m) 14.76(4.50m)...

17English
Installation
 This table is for user’s reference only.
Screen
(Diagonal)27.1” (68.8cm) 54.1” (137.5cm) 135.3” (343.8cm) 189.5” (481.3cm) 243.6” (618.8cm)297.8” (756.3cm)
Screen
Size (WxH)21.7” x 16.3”
55.0 x 41.3cm 43.3” x 32.5”
110.0 x 82.5cm 108.2” x 81.2”
275.0 x 206.3cm 151.6” x 113.7”
385.0 x 288.8cm 194.9” x 146.2”
495.0 x 371.3cm 238.2” x 178.7”
605.0 x 453.8cm
Hd2.44” (6.2cm) 4.87” (12.4cm) 12.18” (30.9cm)17.06” (43.3cm)21.92” (55.7cm) 26.80” (68.1cm)
Distance1.64’ (0.50m)3.28’ (1.00m)...

18
English
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...

19English
User Controls
Remote Control
Using the Remote Control
Power
  Refer to the “Power On/Off the Projector” 
section on pages 13-14.
Contrast Adjust the contrast of the image. (For SVGA 
only)
L ButtonNo function.
R ButtonNo function.
Page +No function.
Page -No function.
Enter  Confirm your item selection.
SourcePress “Source” to select an input signal.
Re-SYNC  Automatically synchronizes the projector to 
the input source.
Four Directional 
Select KeysUse     to select items or make 
adjustments...

20
English
User Controls
Using the Remote Control
HDMIPress “HDMI” to choose HDMI source. (For 
WXGA only)
FreezePress “Freeze” to pause the screen image.  
Press this button again to unlock.
AV muteMomentarily turns off/on the audio and 
video.
S-Video Press “S-Video” to choose S-Video source.
VGAPress “VGA” to choose VGA sources.
VideoPress “Video” to choose Composite video 
source.