Optoma Tx778w Projector User Manual

4English

User Controls

Setup | Security
■ First Time:
1.	The	Password	is	4	digits,	DEFAULT	VALUE	is	“1234”.	( first	time)
2.  Use number buttons on the remote to select your password, and then 
press “Enter”	key	to	confirm	your	selection.
 Change Password
1.  Press “Enter” to input old password.
2.  Use number button to enter current password, and then 
press “Enter” key again to reveal next OSD menu.
3.  Scroll down to highlight Password, and then press 
“Enter” to activate.
4.  Enter new...

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User Controls

 Source Lock
 On: The projector will search specified connection port.
 Off: The projector will search for other signals if the current input signal is lost. 
  High Altitude
Choose “On” to turn on High Altitude mode. Operates the fans at 
full speed continuously to allow for proper high altitude cooling of 
the projector.
 Information Hide
 On: Choose “On” to hide the searching message.
 Off: Choose “Off” to show the searching message.
 Keypad Lock
When the keypad lock...

43English

User Controls

Options | Advanced
 Signal Power On
 On: The projector will automatically power on when plug in 
any signal source to the projector at standby mode. (*)
 Off: Turn on the projector to normal mode. 
  Direct Power On
Choose “On” to turn on Direct Power On mode. The projector 
will automatically power on when AC power is supplied, without 
pressing the “Power/Standby” key on the projector control panel 
or “” key on the remote control.
 Auto Power Off
Sets the countdown timer...

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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 by up to 
130%. 
 Bright: Choose “Bright” to increase the brightness.
 Lamp Reset
Reset the lamp...

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Appendices
Image Problems
 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,...

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Appendices

 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). (*)
 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:...

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Appendices

 Image is out of focus
 Make sure the lens cap is removed.
 Adjusts the Focus Ring on the projector lens. 
 Make sure the projection screen is between the required distance 
3.9 to 32.8 feet (1.2 to 10.0 meters) from the projector.  
See page 18.
 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...

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Appendices

Intermission Problems
 The projector stops responding to all controls
 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
 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...

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Appendices

 Message Reminders
 
 Fan failed:
 
 Temperature warning:
 
 Replacing the lamp:
 
 Status Message:
 
 
Remote Control Problems
 If the remote control does not work
 Check the operating angle for the remote control is approximately 
±22.5°.
 Make sure there are no obstructions between the remote  
control and the projector. Move to within 6 m (20 ft) of the  
projector.
 Make sure the batteries are inserted correctly.
 Replace weak batteries in the remote control. 

50English

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 min-
utes before changing the lamp. 
 Warning: Lamp compartment may be hot! Allow it to cool 
down before changing the lamp!
 Warning: To reduce the...