Optoma Tx779 Projector User Manual

English1
Troubleshooting
If you experience a problem with your projector, please refer to the follow-
ing information. If a problem persists, please contact your local reseller or 
service center.
Image
No image appears on-screen
4
 Ensure all the cables and power connections are correctly and securely connected as described in the 
Installation section.
4 Ensure all the pins of connectors are not bent or broken.
4 Check if the projection lamp has been securely installed. Please refer to the...

English
4 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]
Acer  �   [Fn]+[F5]
Asus �   [Fn]+[F8]
Dell  �  [Fn]+[F8]
Gateway � 
  [Fn]+[F4]
Mac Apple: 
System Preference � Display � Arrangement � Mirror 
display IBM/Lenovo 
�[Fn]+[F7]
[Fn]+[F4]
HP/Compaq 
NEC � �
   [Fn]+[F3]
Toshiba  �   [Fn]+[F5]
If you experience difficulty changing resolutions or your  
monitor freezes, restart all...

English
The image is stretched when displaying 16:9 DVD title
When  you  play  anamorphic  DVD  or  16:9  DVD,  the  projector  will 
show  the  best  image  in  16:9  format  in  OSD.  If  you  play  4:3  format 
DVD  title,  please  change  the  format  as  4:3  in  projector  OSD.  If  the 
image is still stretched, you will also need to adjust the aspect ratio 
by referring to the following:
4 Please setup the display format as 16:9 (wide) aspect ratio type on your DVD player.
Image is too...

English
Projector LED Status Indicator
Message
Power LED
 
(Green)Temp LED
 
(Red)Lamp LED
 
(Red)
Standby State (Input power cord)
Slow Flashing 
2 sec off  
2  sec on
Power on (Warming)Flashing 
0.5 sec off  
0.5 sec on
Power on & Lamp lighting
Power off (Cooling)
Flashing 
1 sec off   
1 sec on 
< 10 sec to off
Error (Lamp fail)Flashing 
0.5 sec off  
0.5 sec on
Error (Fan fail)Flashing 
0.5 sec off  
0.5 sec on Flashing 0.5 sec off 
0.5 sec on
Error (Over Temp)Flashing 
0.5 sec off  
0.5...

English
Message Reminders4
 Replacing the lamp:
4 Out of range: (see the following for more information)
Remote Control
If the remote control does not work
4 Check the operating angle for the remote control is  approximately ±15°.
4 Make sure there are no obstructions between the remote control and the projector. Move to within 7m (23 ft) of the projector.
4 Make sure the batteries are inserted correctly.
4 Replace weak batteries in the remote control.
Audio
There is no sound
4
 Adjust the...

English
Replacing the Lamp
The projection lamp should be replaced when it burns out. It should 
only  be  replaced  with  a  certified  replacement  part,  which  you  can  
order from your local dealer.
Important:
4 The lamp contains a certain amount of mercury and should be disposed of according to local ordinance regulations.
4 Avoid touching the glass surface of the new lamp, doing so may shorten its operation life.
Warning:
4 Be sure to turn off and unplug the projector at least an hour...

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4
5
1.   Switch off the power to the projector by pressing the Power button.
2.    Allow the projector to cool down at least 30 minutes. 
3.    Disconnect the power cord.
4.    Open the screw cover.  
5.    Remove the single screw on the lamp compartment cover.  
6.  

 
Remove the lamp compartment cover.  
7.     Remove the three screws from the lamp module.  
Lift the module handle up.  
8. 

    Pull firmly on the module handle to remove the lamp module.  
To replace the...

English
Cleaning the Projector
Cleaning  the  projector  to  remove  dust  and  grime  will  help  ensure 
trouble-free operation. 
Warning:
4 Be sure to turn off and unplug the projector at least an hour before cleaning. Failure to do so could result in a severe burn.
4 Use only a dampened cloth when cleaning. Do not allow water to enter the ventilation openings on the projector. 
4  If  a  little  water  gets  into  the  projector  interior  while  cleaning,  leave unplugged in a...

English
Compatibility Modes
Computer Compatibility
SignalResolutionRefresh Rate (Hz)
NTSC - 60
PAL/SECAM - 50
VESA 640 x 350 70.1/ 85.1
640 x 400 70.1 / 85.1
720 x 350 70
720 x 400 70/ 85
720 x 576 50/ 60
VGA 640 x 480 60/ 67/ 72.8/ 75/ 85
SVGA 800 x 600 56.3/ 60.3/ 75/ 72.2/ 80/ 85.1/ 120 832 x 624 72/ 75
1024 x 576 50/ 60
XGA 1024 x 768 60/ 70.1/ 72/ 75/ 85/ 120 1152 x 864 60/ 70/ 75/85
HD720 1280 x 720 50/ 60/ 75/ 85/ 120 WXGA 1280 x 768 60/ 70/ 75/ 85
WXGA-800 1280 x 800 60
SXGA 1280 x 1024...

English0
SignalResolutionRefresh Rate (Hz)
720 x 480 60
720 x 480i 60
720 x 480p 60
Apple Mac Compatibility
ResolutionMacbookMacbook Pro 
(Intel)
Power Mac 
G5
Power Mac 
G4
Hz- Analog Analog Analog Analog
800x600 60 o o--
800x600 72 o oo o
800x600 75 o oo o
800x600 85 o oo o
1024x768 60 o oo o
1024x768 70 o oo o
1024x768 75 o oo o
1024x768 85 o oo o
1280x720 60 o oo o
1280x720 75 o o- o
1280x720 85 o o- o
1280x768 60 o o- o
1280x768 75 o oo o
1280x768 85 o o- o
1280x800 60 o oo o
1280x102460 - oo...