Optoma Txr774 Projector User Manual

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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 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). (*)
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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 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 36 for more information.
4 Change the monitor color setting on your computer.
Image has vertical flickering bar
4
  Use  Frequency  to  make  an  adjustment.  See  page  36  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 pages 18-20 for more infor-
mation.
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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 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  +/-]  button  until  the  sides  are  vertical  on  the remote control.
Image is reversed
4
 Select  Setup | Projection from the OSD and adjust the projec-
tion direction.
Intermission Problems
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  re-
place  the  lamp,  follow  the  procedures  in
  Replacing the LampReplacing  the  Lamp 
on page 56.
v Use of 
Keystone is not 
recommended.
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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 70
DMD error 80
Color wheel error 90
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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 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.
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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. Loosen the two captive screws on the lamp compartment cover.
2. Open the lamp compartment cover.
3. Remove the two screws from the lamp module.
4. Lift the module handle up.
5. Replace the lamp module.
6. Reverse steps 1 to 5 to install the new lamp module.
After  replacing  the  lamp,  the  lamp  hours  counter  must  be  reset.  
See  page 47 for more information.
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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 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.
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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 60/ 75/85
SXGA+ 1400 x 1050 60
UXGA 1600 x 1200 60
1600 x 1050 60
HD1080 1920 x 1080 24/ 50/ 60/75
WUXGA 1920 x 1200 60/ 75
HDTV 1920 x 1080i 50/ 60
1920 x 1080p 50/ 60
1280 x 720p 50/ 60
SDTV 720 x 576i 50
720 x 576p 50
720 x 480i 60
720 x 480p 60
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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--
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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