Optoma Txr774 Projector User Manual

English
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 Problems
No image appears on-screen4
 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...

English
4 If you are using a Notebook:1. First, follow the steps above to adjust resolution of the com- puter.
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 moni -
tor 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 on projector side. 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...

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Projector Status Indication
MessagePower LED Lamp LED
T1 temperature over temperature 3 0
Thermal Break 40
G794 fail 44
T1 fail 45
Lamp error 50
Ballast Over Temperature 51
Ballast shot circuit in output  
detected 5
2
End of lamp lift detected 53
Ballast lamp did not ignite 54
Lamp extinguished during  
normal operation 5
5
Lamp extinguished during  
run-up phase 5
6
Fan1 error (Lamp Fan) 61
Fan2 error (Ballast Fan) 61
Fan3 error (Burner Fan) 63
Fan4 error (Power Fan) 64
Lamp door open...

English
Message Reminders4
 Replacing the lamp:
4 Out of range: (see the following for more information)
Remote Control Problems
If the remote control does not work
4  Check  the  operating  angle  for  the  remote  control  is  approxi-mately ±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 Problems
There is...

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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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...

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Compatibility Modes
Computer Compatibility
Signal Resolution Refresh 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/ 88
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/ 85.1 832 x 624 72/ 75
1024 x 576 50/ 60
XGA 1024 x 768 60/ 70.1/ 72/ 75/ 85/ 87 1152 x 864 60/ 70/ 75/85/ 75
HD720 1280 x 720 50/ 60/ 75/ 85
WXGA 1280 x 768 60/ 70/ 75/ 85
WXGA-800 1280 x 800 60
SXGA 1280 x 1024...

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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 

English0
RS232 Commands
RS232 VGA-In Connector
Pin No Name I/O (From Projector Side)1 NC
_
2 RXD IN
3 TXD OUT
4 NC
_
5NC_
6NC_
7 RS232 RTS
8 RS232 CTS
9 NC
_
Appendices