NEC Projector LT35 LT30 LT25 User Manual

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Auto Keystone Correction
The Auto Keystone correction feature will correct the vertical distortion of a projected image on the screen. No special
operation required. Just place the projector on a flat surface.
3. Projecting an Image (Basic Operation)
NOTE: When using the Auto Keystone function, heed the following:
•The vertical keystone angle can be corrected between 16 degrees upward and 16 degrees downward from level.
•The Auto Keystone correction will take effect in 2 seconds after changing the projection angle during projection.
•The left and right, or horizontal keystone distortion is not available.
Place the projector so that the lens surface is parallel to the screen.
Also, adjust the height to keep the projector level by rotating the rear feet.
TIP: To turn off the Auto Keystone function, from the menu select [Setup - General] 
→ [Auto Keystone] and select [Off]. (→ page 25)
Even when the menu setting for [Auto Keystone] is turned on, [Keystone] can be adjusted manually.
NOTE: Auto and Manual Keystone correction angle could be less than 16 degrees depending on some kinds of signal and aspect
ratios.
NOTE: The Auto Keystone Correction feature can cause an image to be slightly blurred because the correction is made electronically. 
						

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3. Projecting an Image (Basic Operation)
 Adjusting Focus Manually
Adjust the focus manually in the following cases:
•When adjusting the focus out of the effective range of the automatic focus
•When finely adjusting the focus
•When the menu setting for [Auto Focus] is turned off
Adjusting with buttons on the cabinet
LAMP
STATUS
POWER
SOURCE AUTO ADJ. FOCUS
ON/STAND BY
SELECT1. Press the FOCUS button quickly.
The focus adjustment screen will be displayed.
The focus adjustment screen will be closed if no button operation is
made for 5 seconds.
LAMP
STATUS
POWER
SOURCE AUTO ADJ. FOCUS
ON/STAND BY
SELECT
TIP: If the projector is placed within the effective focus range, pressing
and holding the FOCUS for a minimum of 2 seconds starts the Auto
Focus function.
2. Press the SELECT 
 or  button to adjust the focus.
3. Press the EXIT button.
The focus adjustment screen will be closed.
Adjusting with the remote control
ENTEREXIT MENUUP PAGE OFF
POWERON
PIC-MUTE
DOWN
FOCUS
1. Press the FOCUS + or - button.
The focus adjustment screen will be displayed.
2. Press the EXIT button.
The focus adjustment screen will be closed.
•The focus adjustment screen will be closed if no button operation
is made for 5 seconds.
•Use the FOCUS + or - button to adjust the focus. 
						

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 Correcting Keystone Distortion Manually
You can also correct the vertical keystone distor tion manually.
NOTE: Manual keystone correction is not available when there is no signal received by any input.
Adjust the keystone distortion manually in the following cases:
•To fine tune Keystone correction even after performing the [Auto Keystone] adjustment.
•When the menu setting for [Auto Keystone] is turned off
Adjusting with buttons on the cabinet
3. Projecting an Image (Basic Operation)
1.Press the SELECT 
 or  button with no
menus displayed.
The slide bar will be displayed for your adjust-
ment.
2. Press the EXIT button.
The slide bar will be closed.
Adjusting with the remote control
1. Press the MENU button.
The menu will be displayed.
LAMP
STATUS
POWER
SOURCE AUTO ADJ. FOCUS
ON/STAND BY
SELECT
2. Use the SELECT  button to select [Setup -
General] and then press the ENTER button.
3. Select the Keystone function.
Use the SELECT 
 button to select [Keystone]. 
						

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LAMP
STATUS
POWER
SOURCE AUTO ADJ. FOCUS
ON/STAND BY
SELECT
3. Projecting an Image (Basic Operation)
[Poor picture]
[Normal picture]
Increase volume
Decrease volumeLAMP MODE
VOLUMES-VIDEOVIDEO
AUTO ADJ. COMPUTER
ASPECT HELP
FREEZE PICTURE
Sound level from the
speaker can be adjusted.
 Optimizing RGB Picture Automatically
Adjusting the Image Using Auto Adjust
Optimizing an RGB image automatically.
Press the AUTO ADJ. button to optimize an RGB image automatically.
This adjustment may be necessary when you connect your computer for the first time.
NOTE:
Some signals may take time to display or may not be displayed correctly.
•The Auto Adjust function does not work for component and video signals.
•If the Auto Adjust operation cannot optimize the RGB signal, try to adjust Horizontal/Vertical Position Clock and Phase manually.
(→ page 39)
 Adjusting Volume Up or Down
LAMP MODE
VOLUMES-VIDEOVIDEO L-CLICK
MOUSE
R-CLICK
AUTO ADJ. COMPUTER
ASPECT HELP
FREEZE PICTURE
TIP: When no menus appear, the SELECT  and  buttons on the projector cabinet work as a volume control.
4. Correct the vertical distortion.
Use the SELECT 
 or  button to correct the verti-
cal keystone distortion.
NOTE: The Keystone Correction feature can cause an image
to be slightly blurred because the correction is made elec-
tronically.
5. Press the EXIT button twice to close the menu.
TIP: You can save the changes using the Keystone Save fea-
ture when you turn off the projector. (
→ page 40) 
						

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 Turning off the Projector
To turn off the projector:
3. Projecting an Image (Basic Operation)
LAMP
STATUS
POWER
SOURCE AUTO ADJ.
ON/STAND BY
ENTEREXIT MENUUP PAGE OFF
POWERON
PIC-MUTE
DOWN
FOCUSFirst, press the POWER (ON/STAND BY) button on the
projector cabinet or the POWER OFF button on the re-
mote control. The “Power Off / Are you sure?” message
will appear.
	 After Use
Preparation: Make sure that the projector is turned off.
1. Unplug the power cable.
2. Disconnect any other cables.
3. Retract adjustable tilt foot if extended.
4. Cover the lens with the lens cap.
5. Put the projector and its accessories in the supplied soft case.
Secondly, press the ENTER button or press the POWER
(ON/STAND BY) or the POWER OFF button again.
The power indicator will glow orange.
Immediately after turning on the projector and displaying
an image, you cannot turn off the projector for 60 sec-
onds.
POWER STATUSLAMP
POWER STATUSLAMP
POWER STATUSLAMP
Power On Fan running Standby
Steady green light Blinking
orange lightSteady orange
light
CAUTION:
Do not unplug the power cable from the wall outlet or projector when the projector is powered on. Doing so can
cause damage to the AC IN connector of the projector and (or) the prong plug of the power cable.
CAUTION:
Parts of the projector will become heated during operation. Use caution when picking up the projector immediately
after it has been operating.
CAUTION:
Use caution when putting the projector in the soft case immediately after the projector has been operating.
The projector cabinet is hot.
About Direct Power Off
The projector has a feature called Direct Power Off. This feature allows the projector to be turned off (even when
projecting an image) using a power strip equipped with a switch and a breaker.
NOTE: Do not turn off the projector using the Direct Power Off function within 10 seconds of making adjustment or setting changes
and closing the menu.
Doing so can cause loss of adjustments and settings.
TIP: To turn off the AC power supply when the projector is powered on, use a power strip equipped with a switch and a breaker.
TIP: The projector can be unplugged during its cool down period after it is turned off. 
						

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4. Convenient Features

 Turning off the Image and Sound
Press the PIC-MUTE button to turn off the image and sound for a short
period of time. Press again to restore the image and sound.
ENTEREXIT MENUUP PAGE OFF
POWERON
PIC-MUTE
DOWN
FOCUS
 Freezing a Picture
Press the FREEZE button to freeze a picture. Press again to resume
motion.
 Changing Lamp Mode
LAMP MODE
VOLUMES-VIDEOVIDEO L-CLICK
MOUSE
R-CLICK
AUTO ADJ. COMPUTER
ASPECT HELP
FREEZE PICTURE
The lamp life can be extended by using the Eco mode.
To change to the “Eco” mode, do the following:
1. Press the LAMP MODE button to display [Lamp Mode] screen.
2. Use the SELECT 

 or  button to select [Eco] mode.
3. Press the ENTER button. Or press the SELECT 
 button to select
[OK] and press the ENTER button.
To cancel it, select [Cancel] and press the ENTER button.
To change from [Eco] to [Normal], Go back to Step 2 and select [Nor-
mal]. Repeat Step 3.
Normal Mode ........ This is the default setting (100% Brightness).
Eco Mode .............. Select this mode to increase the lamp life and reduce fan
noise (LT35: 77% Brightness, LT30/LT25: 85% Bright-
ness).
LAMP MODE
VOLUMES-VIDEO
ASPECT HELP
FREEZE PICTURE
 Preventing the Unauthorized Use of the Projector
A keyword can be set for your projector using the Menu to avoid operation by an unauthorized user. When a keyword
is set, turning on the projector will display the Keyword input screen. Unless the correct keyword is entered, the
projector cannot project an image.
To enable the Security function:
1. Press the MENU button.
The menu will be displayed.
2. Use SELECT 

 or  button to select [Setup - Installation] → [Security] and press the ENTER button.
The Off/On menu will be displayed. 
						

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4. Convenient Features
3.Select [On] and press the ENTER button.
The [Keyword] screen will be displayed.
4. Type in a combination of the four SELECT 

 buttons and press the ENTER button.
NOTE: A keyword must be four to 10 digits in length.
The [Confirm Keyword] screen will be displayed.
5. Type in the same combination of SELECT 

 buttons and press the ENTER button.
The confirmation screen will be displayed.
6. Select [Yes] and press the ENTER button.
The Security function has been enabled.
To turn on the projector when [Security] is enabled:
When the Security function is enabled and the projector is turned on, the projector will display a blue
background.
To display an image at this time, press the MENU button to display the Keyword input screen.
Type in the correct keyword and press the ENTER button. The projector will display an image.
NOTE: The security disable mode is maintained until the main power is turned off or unplugging the power cable. 
						

							30
4. Convenient Features
To disable the Security function:
1. Press the MENU button.
The menu will be displayed.
2.Select [Setup - Installation] 
→ [Security] and press the ENTER button.
The Off/On menu will be displayed.
3. Select [Off] and press the ENTER button.
The Keyword confirmation screen will be displayed.
4. Type in your keyword and press the ENTER button.
When the correct keyword is entered, the Security function will be disabled.
NOTE: If you forget your keyword, contact your dealer. Your dealer will provide you with your keyword in exchange for your request
code. Your request code is displayed in the Keyword Confirmation screen. In this example [K992-45L8-JNGJ-4XU9-1YAT-EEA2] is
a request code. 
						

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30° 30°
4. Convenient Features
 Using the Optional Remote Mouse Receiver
The optional remote mouse receiver enables you to operate your computer’s mouse functions from the remote control.
It is a great convenience for clicking through your computer-generated presentations.
Connecting the remote mouse receiver to your computer
If you wish to use the remote mouse function, connect the mouse receiver and computer.
The mouse receiver can be connected directly to the computer’s USB port (type A).
NOTE: Depending on the type of connection or OS installed on your computer, you may have to restart your computer or change
your computer settings.
Remote mouse receiverComputer
To USB port of PC or Macintosh
When operating a computer via the remote mouse receiver
Remote sensor on the remote mouse receiver 7m/22 feet
When connecting using the USB terminal
For PC, the mouse receiver can only be used with a Windows 98/Me/XP*, Windows 2000 or Mac OS  X 10.0.0 or later
operating system.
* NOTE: In Windows XP, if the mouse cursor will not move correctly, do the following:
Clear the Enhance pointer precision check box underneath the mouse speed slider in the Mouse Properties dialog box [Pointer
Options tab].
NOTE: Wait at least 5 seconds after disconnecting the mouse receiver before reconnecting it and vice versa. The computer may not
identify the mouse receiver if it is repeatedly connected and disconnected in rapid intervals.
Operating your computer’s mouse from the remote control
You can operate your computers mouse from the remote control.
PAGE UP/DOWN Button .... scrolls the viewing area of the window or to move to the previous or next slide in PowerPoint on
your computer.
SELECT 
 Buttons .. moves the mouse cursor on your computer.
MOUSE L-CLICK Button .... works as the mouse left button.
MOUSE R-CLICK Button .... works as the mouse right button.
NOTE: When you operate the computer using the SELECT 
 or  button with the menu displayed, both the menu and the
mouse pointer will be affected. Close the menu and perform the mouse operation.
TIP: You can change the Pointer speed on the Mouse Properties dialog box on the Windows. For more information, see the user
documentation or online help supplied with your computer. 
						

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 Using the Menus
NOTE: The on-screen menu may not be displayed correctly while an interlaced motion video image is projected.
1. Press the MENU button on the remote control or projector cabinet to display the main menu.
5. Using On-Screen Menu
ENTEREXITUP PAGE OFF
POWERON
PIC-MUTE
DOWN
FOCUS
MENU
ENTEREXIT MENUUP PAGE OFF
POWERON
PIC-MUTE
DOWN
FOCUS
EXIT MENUUP PAGE OFF
POWERON
PIC-MUTE
DOWN
FOCUS
ENTER
Highlight
Indicates the selected menu
or item.
2. Press the SELECT 
 buttons on the remote control or the projector cabinet to highlight the menu for the
item you want to adjust or set.
3. Press the ENTER button on the remote control or the projector cabinet to select a submenu or item.
4. Use the SELECT 

 buttons on the remote control or the projector cabinet to select the item you want to
adjust or set.
ENTEREXIT MENUUP PAGE OFF
POWERON
PIC-MUTE
DOWN
FOCUS
FOCUS
SELECT
FOCUS
SELECT
FOCUS
SELECT
FOCUS
SELECT