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 
Replacing the lamp section.
4  Make  sure  you  have  removed  the  lens  cap  and  the  projector is switched on.
Partial, scrolling or incorrectly displayed image
4
 Press “Re-Sync” on the remote.
4 If you are using a PC:For Windows 95, 98, 2000, XP:
1.  Open  the 
My  Computer  icon,  the Control  Panel  folder,  and 
then double click on the 
Display icon.
2. Select the 
Settings tab.
3.  Verify  that  your  display  resolution  setting  is  lower  than  or  equal to UXGA (1600 x 1200).
4. 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.
5. Verify the resolution setting is lower than or equal to UXGA   (1600 x 1200).
6. Select the 
Change button under the Monitor tab.
7.  Click  on 
Show  all  devices.  Next,  select Standard  monitor 
types  under  the  SP  box;  choose  the  resolution  mode  you 
need under the “Models” box.
8.  Verify  that  the  resolution  setting  of  the  monitor  display  is  lower than or equal to UXGA (1600 x 1200). (*)
Appendices 
						

							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 equipment including the projector.
The screen of the Notebook or PowerBook computer is 
not displaying your presentation
4
 If you are using a Notebook:Some Notebooks may deactivate their own screens when a 
second display device is in use. Each has a different way to 
be reactivated. Refer to your computer’s manual for detailed 
information.
Image is unstable or flickering
4
 Use Phase to correct it. See page 35 for more information.
4 Change the monitor color setting on your computer.
Image has vertical flickering bar4
 Use Frequency to make an adjustment. See page 35 for more 
information.
4 Check and reconfigure the display mode of your graphic card  to make it compatible with the projector.
Image is out of focus
4
 Make sure the lens cap is removed.
4 Adjusts the Focus Ring on the projector lens.
4 Make sure the projection screen is between the required  distances from the projector. See page 19 for more  
information.
Appendices 
						

							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 small or too large
4
 Adjust the Zoom Ring on the top of the projector.
4 Move the projector closer to or further from the screen.
4 Press [Menu] button on the remote control or projector  panel, go to 
Display | Format and try the different settings.
Image has slanted sides
4
 If possible, reposition the projector so that it is centered on the screen and below the bottom of the screen.
4  Press  [Keystone  +/-]  on  the  remote  control  until  the  sides  are vertical.
Image is reversed
4
 Select Setup | Projection from the OSD and adjust the  
projection direction.
Other
The projector stops responding to all controls
4
  If  possible,  turn  off  the  projector,  then  unplug  the  power  cord and wait at least 60 seconds before reconnecting power.
Lamp burns out or makes a popping sound
4
 When the lamp reaches its end of life, it will burn out and may make a loud popping sound. If this happens, the  
projector will not turn on until the lamp module has been 
replaced. To replace the lamp, follow the procedures in 
Replacing the Lamp on page 56.
Appendices 
						

							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 sec on
Steady light  �No light �
Appendices 
						

							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 volume on the remote control. 
4 Adjust the volume of the audio source.
4 Check the audio cable connection.
4 Test the source audio output with other speakers.
4 Have the projector serviced.
The sound is distorted4
 Check the audio cable connection.
4 Test the source audio output with other speakers.
4 Have the projector serviced.
Appendices 
						

							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 before replacing the lamp. Failure to do so could result in a severe burn.
1
2
3
Appendices  
						

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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 lamp module, reverse the previous steps. While 
installing, align the lamp module with the connector and ensure it is 
level to avoid damage.
9.    Turn on the projector and do "Lamp Reset" after the lamp  
module is replaced. 
Lamp Reset: See page 47 for more information.
Appendices 
						

							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 well-ventilated room for several hours before using.
4 If a lot of water gets into the projector interior when cleaning, have the projector serviced.
Cleaning the Lens
You can purchase optic lens cleaner from most camera stores. Refer 
to the following to clean the pro-jector lens.
1. Apply a little optic lens cleaner to a clean soft cloth.  (Do not apply the cleaner directly to the lens.)
2. Lightly wipe the lens in a circular motion.
Caution:
4 Do not use abrasive cleaners or solvents.
4 To prevent discoloration or fading, avoid getting cleaner on the   projector case.
Cleaning the Case
Refer to the following to clean the projector case.
1. Wipe off dust with a clean dampened cloth.
2.  Moisten  the  cloth  with  warm  water  and  mild  detergent  (such  as  used to wash dishes), and then wipe the case.
3. Rinse all detergent from the cloth and wipe the projector again.
Caution:
To  prevent  discoloration  or  fading  of  the  case,  do  not  use  abrasive 
alcohol-based cleaners.
Appendices 
						

							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 60/ 75/85
SXGA+ 1400 x 1050 60
UXGA 1600 x 1200 60
1600 x 1050 60
HDTV 1920 x 1080 25/30
1920 x  1080i 50/ 60
1920 x  1080p 24/25/30/50/ 60
1280 x 720 60
1280 x 720p 50/ 60
SDTV 720 x 576 50
720 x 576i 50
720 x 576p 50
Appendices
v For wide 
screen  
resolution 
(WXGA), the  
compatibility  
support is 
dependent on 
Notebook/PC 
models.
v 120Hz input  signals may be 
dependent on 
graphic cards 
support. 
						

							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 o
1280x102475 - oo -
1680x105060 o o--
1920x120060 o o--
Appendices