Optoma Ex665ut Projector User Manual

51English
User Controls
OPTIONS |  
Lamp Settings
 Lamp Hours
Display the projection time.
 Lamp Reminder
Choose this function to show or to hide the warning message 
when the changing lamp message is displayed.  
The message will appear 30 hours before suggested replacement 
of lamp.
 Brightness Mode
 STD: Choose “STD” to dim the projector lamp which will lower 
power consumption and extend the lamp life. 
 BRIGHT: Choose “BRIGHT” to increase the brightness. 
 Image AI:  Choose “Image AI” to improve...

52English
Appendices
 No image appears on-screen
 Ensure all the cables and power connections are correctly and 
securely connected as described in the “Installation” section.
 Ensure all the pins of connectors are not bent or broken.
 Check if the projection lamp has been securely installed. Please 
refer to the “Replacing the lamp” section.
 Make sure you have removed the lens cap and the projector is 
switched on.
 Ensure that the “AV mute” feature is not turned on.
 Partial, scrolling or...

53English
Appendices
 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 × 1200). 
 If you are using a Notebook:
 1.  First, follow the steps above to adjust resolution of the  
computer.
 2.  Press the appropriate keys listed below for your notebook 
manufacturer to send signal out from notebook to...

54English
Appendices
 Image is out of focus
 Make sure the lens cap is removed.
 Adjust the Focus Ring on the projector lens. 
 Make sure the projection screen is between the required distance. 
See page 17.
 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 when the projector display mode is set to 
16:9 in the OSD.
 If you play 4:3 format DVD titles, please change the format to 4:3 
in the projector OSD.
 If...

55English
Appendices
 Lamp burns out or makes a popping sound
 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 the “Replacing the Lamp” section on 
pages 57-58.
 LED lighting message
Steady light    
No light  
MessagePOWER/STAND-BY LEDTemp-LEDLamp-LED
(Green/Amber)(Red)(Red)
Standby State
(Input power cord)Amber
Power on...

56English
Appendices
 On Screen Messages 
 Temperature warning:
 
 Fan failed:
 
 Lamp warning:
 
 Out of display range:
 
 Filter warning:
 
 If the remote control does not work
 Check the operating angle of the remote control is within ±15° both horizontally and vertically of one of the IR receivers on the projector.
 Make sure there are not any obstructions between the remote control and the projector. Move to within 7 m (±0°) of the projector.
 Make sure the batteries are inserted correctly....

57English
Appendices
Replacing the lamp
The projector automatically detects the lamp life. When the 
lamp life is nearing the end of use, you will receive a warning 
message.
When you see this message, please contact your local reseller 
or service center to change the lamp as soon as possible. 
Make sure the projector has been cooled down for at least 30 
minutes before changing the lamp. 
 Warning: Lamp compartment may be hot! Allow it to cool 
down before changing the lamp!
 Warning: To reduce the...

58English
Appendices
Lamp Replacement Procedure:
1. Switch off the power to the projector by pressing the “” button. 
2. Allow the projector to cool down for at least 30 minutes.
3. Disconnect the power cord.
4. Unscrew the one screw on the cover. 1
5. Lift up and remove the cover. 2
6. Unscrew the three screws on the lamp module. 3
7. Lift up the lamp handle and remove the lamp module slowly and carefully . 4
To replace the lamp module, reverse the previous steps.
8.  Turn on the projector and use “Lamp...

59English
Appendices
Replacing and cleaning the dust 
filter
We recommend cleaning the dust filter after every 300 hours 
of use, clean it more often if the projector is used in a dusty 
environment. 
 
When you see this message, please find following steps for 
cleaning procedure: 
	If dust builds up on the filter is not cleaned, the projector will over-heat and cause problems with the operation and shorten the life of the product.
Cleaning the Dust Filter Procedure:
1. Switch off the power to the...

60English
Appendices
	For widescreen resolution (WXGA), the compatibility support is dependent on Notebook/PC models.
	120Hz input signals may be dependent on graphics cards support.
	Please note that using resolutions other than native 1024 x 768 (XGA model), 1280 x 800 (WXGA model) may result in some loss of image clarity.
	For WXGA model only. 
Compatibility Modes
ModeResolutionV-Sync (Hz)H-Sync (KHz)
AnalogDigitalAnalogDigital
VGA640 × 350707031.5031.50
VGA640 × 350858537.9037.90
VGA640 ×...