Optoma Ep749 Projector User Manual

							
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29

 User Controls

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 password (4 digits in length) using the number but-
tons on the remote, then press “Enter” to confi  rm
.
5.  Enter new password again and press “Enter” to confi  rm.
Security Mode
■ Security Timer: Can be select the time (month/day/hour) 
function to set the number of hours the projector can be 
used. Once this time has elapsed you will be requested to 
enter your password again (Use number buttons on remote. 
To change password, follow change password instructions 
above).
■ Enable: Choose “Enable” to enable security verifi  cation 
when turning on the projector.
■ Disable: Choose “Disable” to be able to switch on the projec-
tor without password verifi  cation.       
						

							
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User Controls
Lamp Setting
 Projection Hours
Displays the projection time.
 Lamp Hours
Displays the cumulative lamp operating time.
  Reset Lamp Hours
Resets the lamp life hour counter after replacing the lamp. 
 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 end of life.
 ECO Mode
Choose “On” to dim the projector lamp which will lower power 
consumption and extend the lamp life by up to 130%. Choose 
”Off” to return to normal mode.
 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.  
 Auto Power On
Choose “On” to power on the projector automatically when the 
power cord has connected. Choose ”Off” to return to normal 
mode.
 Auto Power Off
Sets the countdown timer interval. The countdown timer will start, 
when there is no signal being sent to the projector. Then projector 
will automatically power off when the countdown has fi  nished.     
						

							
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31
Appendices
 Sleep Timer
Sets the countdown timer interval. The timer will begin, with or 
without a signal input. Then the projector will automatically power 
off then the sleep timer countdown has fi  nished.     
						

							
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Appendices

Problem: No image appears on screen
 Ensure all the cables and power connections are correctly and 
securely connected as described in the “Installation” section.
 Ensure the pins of connectors are not crooked 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.
Problem: Left of right edge of the image is missing or the im-
age is unstable or noisy
 Press “Re-Sync” on the remote control or on control panel.
  If you are using a PC:
For Windows 3.x:
1.  In the Windows Program Manager, double click the “Windows 
Setup” icon in the Main group.
2.  Verify that your display resolution setting is less than 
or equal 
to 1400 x 1050.
For Windows 95, 98, 2000, XP:
1.  From the “My Computer” icon, open the “Control Panel” 
folder, and double click the “Display” icon.
2.  Select the “Settings” tab. 
3.  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.
4.  Verify the resolution setting is less than or equal to 1400 x 1050 
resolution.
 Troubleshooting
If you experience trouble with the projector, refer to the follow-
ing information.  If the problem persists, please contact your 
local reseller or service center, see page 40 for details.   
						

							
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5.  Select the “Change” button under the “Monitor” tab.
6.  Click on “Show all devices.” Next, select “Standard monitor 
types” under the SP box; choose the resolution mode you need 
under the “Models” box. 
  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]
   
  If you experience diffi  culty changing resolutions or your monitor 
freezes, restart all equipment including the projector.
Problem: The screen of the Notebook or PowerBook computer 
is not displaying a presentation
 If you are using a Notebook PC:
Some Notebook PCs 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 documentation for detailed 
information.
Problem: Image is unstable or fl  ickering
 Use “Phase” to correct it. (See page 22)
 Change the monitor colour setting on your computer.
Problem: Image has vertical fl  ickering bar
 Use “Frequency” to make an adjustment.  (See page 22)
  Check and reconfi  gure the display mode of your graphic card to 
make it compatible with the product. 
Problem: Image is out of focus
  Adjusts the Focus Ring on the projector lens.
   
Compaq=>   [Fn]+[F4]
Dell =>   [Fn]+[F8]
Gateway=>  [Fn]+[F4]
IBM=>  [Fn]+[F7]
Mac Apple: System Preference-->Display-->Arrangement-->Mirror display
Hewlett  =>   [Fn]+[F4]
Packard 
NEC=>   [Fn]+[F3]
Toshiba =>   [Fn]+[F5]     
						

							
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Appendices

  Make sure the projection screen is between distance 3.9 to 39.4 feet 
(1.2 to 12.0 meters) from the projector. (See page 15)
Problem: The image is stretched when displaying 16:9 DVDThe projector automatically detects 16:9 DVD and adjusts the aspect ratio by digitizing to full screen with 4:3 default setting.
If the image is still stretched, you will also need to adjust the aspect ratio by referring to the following:
 Please select 4:3 aspect ratio type on your DVD player if you are playing a 16:9 DVD.
 If you can’t select 4:3 aspect ratio type on your DVD player, please select 4:3 aspect ratio in the on screen menu.
Problem: Image is reversed
  Select “Management-->Projection” from the OSD and adjust the 
projection direction.  (See page 27)
Problem: 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”. (See 
page 36)
Problem: LED lighting message
Steady light => No light => 
MessagePower-LEDTemp-LEDLamp-LED(Green)(Red)
Standby State(Input power cord)
WarmingFlashing
Normal Mode
CoolingFlashing
Error (Lamp failed)
Error (Fan failed)Flashing
Error (Over Temp.)   
						

							
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Problem: Message Reminders
 Fan fail: 
 
 Over temperature:  
 
 Power Off:  
 
  Replace the lamp:  
 
            
						

							
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Appendices

 Replacing the Lamp
The projector keeps track of the lamp usage.  It will show you a 
warning message 
When you see this message, change the lamp as soon as pos-
sible. Make sure the projector has cooled down for at least 30 
minutes before changing the lamp. Warning: Lamp compartment is hot!  Allow 30 minutes to cool down before changing lamp!
Warning: To reduce the risk of 
personal injury, do not drop the lamp module or touch the lamp bulb. The bulb may shatter and cause injury if it is dropped.
Lamp Replacement Procedure: 
1.  Switch off the power to the projector by pressing the Power/
Standby button.
2.  Allow the projector to cool down for at least 30 minutes.
3.  Disconnect the power cord.
4.  Use a screwdriver to remove the screws from the cover.

5.  Push up and remove the cover.

6.  Remove the 2 screws from the lamp module.

7.   Pull out the lamp module. 

To replace the lamp module, reverse the previous steps.
3
4
1
2
5      
						

							
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Remark :  “*”com-pressed computer image.
 Compatibility Modes
ModeResolution(ANALOG)(DIGITAL)
V.Frequency(Hz) H.Frequency(kHz) V.Frequency(Hz) H.Frequency(kHz) 
VESA VGA640 x 3507031.57031.5
VESA VGA640 x 3508537.98537.9
VESA VGA640 x 4008537.98537.9
VESA VGA640 x 4806031.56031.5
VESA VGA640 x 4807237.97237.9
VESA VGA640 x 4807537.57537.5
VESA VGA640 x 4808543.38543.3
VESA VGA720 x 4007031.57031.5
VESA VGA720 x 4008537.98537.9
VESA SVGA800 x 6005635.25635.2
VESA SVGA800 x 6006037.96037.9
VESA SVGA800 x 6007248.17248.1
VESA SVGA800 x 6007546.97546.9
VESA SVGA800 x 6008553.78553.7
VESA XGA1024 x 7686048.46048.4
VESA XGA1024 x 7687056.57056.5
VESA XGA1024 x 7687560.07560.0
VESA XGA1024 x 7688568.78568.7
* VESA SXGA1152 x  8647063.87063.8
* VESA SXGA1152 x  8647567.57567.5
* VESA SXGA1152 x  8648577.18577.1
* VESA SXGA1280 x 10246063.986063.98
* VESA SXGA1280 x 10247579.987579.98
* VESA SXGA+1400 x 10506063.986063.98
MAC LC 13”640 x 48066.6634.98******
MAC II 13”640 x 48066.6835******
MAC 16”832 x 62474.5549.725******
MAC 19”1024 x 7687560.24******
 * MAC1152 x 87075.0668.68******
MAC G4640 x 4806031.35******
 i MAC DV1024 x 7687560******
*  i MAC DV1152 x 8707568.49******
*  i MAC DV1280 x 9606060******      
						

							
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Appendices

VGA-In Connector
RS232 Commands
Pin no.NameI/O (From Projec-tor Side
1TXDOUT
2RXDIN
3GND__
Pin no.Spec.
1R(RED)/Cr
2G(GREEN)/Y
3B(BLUE)/Cb
4NC
5GND
6GND
7GND
8GND
9DDC 5V
10HOT_DET
11NC
12DDC Date
13HS/CS
14VS
15DDC Clock
12345
678910
1112131415
12
3
RS232 Connector