NEC Lt245 Portable Projector Users Manual

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•Free downloadable Software Geometric Correction Tool 2.0.
Corrects the geometry of an image projected onto a cylindrical, spherical or corner screen via serial connection.
For additional information visit:
US : http://www.necvisualsystems.com
Europe : http://www.neceurope.com/
Global : http://www.nec-pj.com/
About this users manual
The fastest way to get started is to take your time and do everything right the first time. Take a few minutes now to
review the users manual. This may save you time later on. At the beginning of each section of the manual youll find an
overview. If the section doesnt apply, you can skip it.
•IBM is a trademark or registered trademark of International Business Machines Corporation.
•Mac, Macintosh and PowerBook are trademarks of Apple Computer, Inc., registered in the U.S. and other
countries.
•Windows, Windows 98, Windows Me, Windows XP or Windows 2000 are trademarks or registered trademarks
of Microsoft Corporation.
•Digital Light Processing, DLP, Digital Micromirror Device and DMD are trademarks of Texas Instruments.
•Ulead is a trademark and/or registered trademark of Ulead Systems, Inc.
•Other product and company names mentioned in this user’s manual may be the trademarks or registered
trademarks of their respective holders.
1. Introduction 
						

							5
1. Introduction
 Part Names of the Projector
Controls
(See page 7)
Built-in Security Slot (  )*
Ventilation (inlet)
Carrying Handle
Lens
Lens Cap Adjustable Tilt  Foot
(See page 31) Ventilation (outlet)
Heated air is exhausted
from here.
Remote Sensor
(See page 12)
Focus Ring
(See page 32) Zoom Lever
(See page 32)
Adjustable Tilt Foot Lever
(See page 31)
*This security slot supports the MicroSaver® Security System. MicroSaver® is a registered trademark of
Kensington Microware Inc. The logo is trademarked and owned by Kensington Microware Inc.
Carrying the Projector
Always carry your projector by the handle.
Ensure that the power cable and any other cables connecting to video sources are disconnected before moving the
projector.
When moving the projector or when it is not in use, cover the lens with the lens cap. 
						

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1. Introduction
Monaural Speaker (2W)
AC Input
Connect the supplied power cables
three-pin plug here, and plug the other
end into an active wall outlet.
(See page 26)Main Power Switch
When you plug the supplied power cable into an active wall
outlet and turn on the Main Power switch, the POWER
indicator turns orange and the projector is in standby mode.
(See page 28) Remote Sensor
(See page 12) PC Card Slot
Rear FootVentilation (outlet)
Lamp cover screw
Rear Foot
Rotate to make the projector level.
(See page 31) PC Card Eject Button
Lamp cover
(See page 119) 
						

							7
1. Introduction
Top Features
PC CARDSOURCE
AUTO ADJUST
3D REFORMLAMP
STATUS
POWER ON/STAND BY
ENTEREXIT
MENU
SELECT
2 11
3
68
4
10 9
5
1217
1. POWER Button (ON / STAND BY)
Use this button to turn the power on and off when the
main power is supplied and the projector is in standby
mode.
NOTE: To turn on the projector, press and hold this button
for a minimum of two seconds. To turn off the projector,
press this button twice.
2. STATUS Indicator
If this light blinks red rapidly, it indicates that an error
has occurred, the lamp cover is not attached properly
or the projector has overheated. If this light remains
orange, it indicates that you have pressed a cabinet
key while the Cabinet Button Lock is enabled. See the
Status Indicator section on page 123 for more details.
3. POWER Indicator ( 
 )
When this indicator is green, the projector is on; when
this indicator is orange, it is in standby mode. See the
Power Indicator section on page 123 for more details.
4. SOURCE Button
Use this button to select a video source such as a PC,
VCR, DVD player or Viewer (PC card).
Press and release this button quickly to display the
Source List.
Each time this button is pressed for a minimum of ONE
second, the input source will change as follows:
Computer1 → Computer2 → Video → S-Video →
Viewer → Computer1 → ...
If no input signal is present, the input will be skipped.
5. AUTO ADJUST Button
Use this button to adjust an RGB source for an opti-
mal picture (See page 35).6. PC CARD Access Indicator
Lights while accessing a PC card.
7. ENTER Button
Executes your menu selection and activates items
selected from the menu.
8. EXIT Button
Pressing this button will return to the previous menu
with saving changes.
While you are in the main menu, pressing this button
will close the menu.
9. SELECT 
 (+) (–) / Volume Buttons

 : Use these buttons to select the menu of the
item you wish to adjust.
 : Use these buttons to change the level of a
selected menu item. When no menus appear,
these buttons work as a volume control.
When the pointer is displayed, these 
 buttons
move the pointer.
10. MENU Button
Displays the menu.
11. LAMP Indicator
If this light blinks red rapidly, its warning you that the
projection lamp has exceeded 2000 hours (up to 4000
hours in Eco mode) of service. After this light appears,
replace the lamp as soon as possible. (See page 119).
If this is lit green continually, it indicates that the lamp
mode is set to Eco. See the Lamp Indicator section
on page 123 for more details.
12. 3D REFORM Button
Press this button to enter 3D Reform mode to correct
the keystone (trapezoidal) distortion, and make the
image square. 
						

							8
1. Introduction
Terminal Panel Features
PC CARD
R  AUDIO IN  L VIDEO INCOMPUTER 1 IN  COMPUTER 2 IN MONITOR OUT AUDIO INAUDIO OUT
USB LAN
S-VIDEO INPC CONTROL
12
786124
111093513
1. COMPUTER 1 IN / Component Input Connector
(Mini D-Sub 15 Pin)
Connect your computer or other analog RGB equip-
ment such as IBM compatible or Macintosh comput-
ers. Use the supplied RGB/VGA signal cable to con-
nect to your computer. This also serves as a compo-
nent input connector that allows you to connect a com-
ponent video output of component equipment such
as a DVD player. This connector also supports SCART
output signal. See page 18 for more details.
2. COMPUTER 2 IN / Component Input Connector
(Mini D-Sub 15 Pin)
This connector has the same function as the COM-
PUTER 1 IN connector.
NOTE: The COMPUTER 2 IN does not support SCART
output signal and Plug & Play.
3. COMPUTER AUDIO IN Mini Jack (Stereo Mini)
This is where you connect audio output from your com-
puter or DVD player. A commercially available audio
cable is required.
4. MONITOR OUT Connector (Mini D-Sub 15 Pin)
You can use this connector to loop your computer
image to an external monitor from the COMPUTER 1
or 2 input source.
The RGB analog signal set on “OUT Terminal” is out-
put during Standby mode. See pages 19 and 109.
5. AUDIO OUT Mini Jack (Stereo Mini)
Connect an additional audio equipment here to listen
to audio coming from your computer, Video or S- Video
input.
•Output sound level can be adjusted in accordance
with the sound level of the internal speaker.
•When audio equipment is connected, the projec-
tor speaker is disabled.
•This jack cannot be used as a headphone jack.6. S-VIDEO IN Connector (Mini DIN 4 Pin)
Here is where you connect the S-Video input from an
external source like a VCR.
NOTE: S-Video provides more vivid color and higher
resolution than the traditional composite video format.
7. VIDEO IN Connector (RCA)
Connect a VCR, DVD player, laser disc player, or docu-
ment camera here to project video.
8. VIDEO AUDIO IN Jacks (RCA)
L:This is your left channel audio input for stereo
sound coming from the VIDEO source.
R: This is your right channel audio input for stereo
sound from the VIDEO source.
9. PC CONTROL Port (Mini DIN 8 Pin)
Use this port to connect your PC or control system to
control your projector via a serial cable. This enables
you to control the projector using serial communica-
tion protocol. The NEC optional serial cable (CA03D)
is required to use this port. You can also control the
projector by using PC Control Utility 3.0 contained on
the supplied User Supportware 2 CD-ROM.
To do so you must first have PC Control Utility 3.0
installed on your PC. If you are writing your own pro-
gram, typical PC control codes are on page 131.
10. USB Port (Type A)
Connect a commercially available USB memory de-
vice or mouse that supports USB. You can operate
the menu or Viewer with the USB mouse via this port.
Note that this port should not be connected to a com-
puter and that there may be some brands of USB
mouse that the projector does not support.
11. LAN Port (RJ-45)
This port is typically used for UTP Ethernet/Fast
Ethernet. Use this connector to control the projector
on a LAN. See page 22. 
						

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1. Introduction
12. PC CARD Eject Button
Press to eject a PC card partially.
13. PC CARD Slot
Insert a PC memory card or NEC optional wireless
LAN card here.
Terminal Panel Features
PC CARD
R  AUDIO IN  L VIDEO INCOMPUTER 1 IN  COMPUTER 2 IN MONITOR OUT AUDIO INAUDIO OUT
USB LAN
S-VIDEO INPC CONTROL
12
786124
111093513 
						

							10
1. Introduction
 Part Names of the Remote Control
1. Infrared Transmitter/Laser  Pointer
Transmits an infrared signal when any button other
than LASER is pressed.
Direct the remote control toward the remote sensor
on the projector cabinet.
Beams a laser light when the Laser button is pressed.
CAUTION:
* Do not look into the laser pointer while it is on.
* Do not point the laser beam at a person.
2. LED
Flashes when any button is pressed.
3. POWER ON Button
When the main power is on, you can use this button
to turn your projector on.
NOTE: To turn on the projector, press and hold the
POWER ON button for a minimum of two seconds.
4. POWER OFF Button
You can use this button to turn your projector off.
NOTE: To turn off the projector, press the POWER
OFF button twice.
5. MAGNIFY (+)(–) Buttons
Use these buttons to adjust the image size.
The image can be magnified about the center of the
screen up to 400%. See page 40.
6. LASER Button
Press and hold this button to activate the laser pointer.
When lit, you can use the laser to draw your audiences
attention to a red dot that you can place on any ob-
ject.
7. POINTER Button
Press this button to display the projector pointer. You
can move your pointer icon to the area you want on
the screen using the Select button. See page 39.
8. PAGE UP/DOWN Buttons
Use these buttons to operate your computer with the
supplied remote mouse receiver. You can use these
buttons to scroll the viewing area of the window or to
move to the previous or next slide in PowerPoint on
your computer.
9. MENU Button
Displays the menu for various settings and adjust-
ments.VOLUME
3D REFORM
POINTERLASER
MAGNIFYPAGE OFF
POWERON
PIC-MUTE
FREEZEUP
1
2
DOWN
PICTURE
SLIDE
AUTO ADJ.
ASPECTHELP
VIEWERLAN
COMPUTER
S-VIDEOVIDEO
1
4
5
7
9
118 6
13
15
3 2
2017 12 10
16
21 18
24
2329
25
27
28 19 26
22
14 
						

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1. Introduction
10. Select Button
This button is used for projector’s menu operation and
moving the magnified image.
This button also works as a computer mouse when
the supplied remote mouse receiver is connected with
your computer. See page 42.
11. ENTER Button
Executes your menu selection and activates items
selected from the menu.
12. EXIT Button
Returns to the previous menu.
While you are in the main menu, pressing this button
will close the menu.
13. R-CLICK Button
Works as the mouse right button when the supplied
remote mouse receiver is connected with your com-
puter.
14. L-CLICK Button
Works as the mouse left button when the supplied
remote mouse receiver is connected with your com-
puter.
15. VIDEO Button
Press this button to select a video source from a VCR,
DVD player, laser disc player or document camera.
16. S-VIDEO Button
Press this button to select an S-Video source from a
VCR.
17. COMPUTER 1 Button
Press this button to select COMPUTER 1 input.
18. COMPUTER 2 Button
Press this button to select COMPUTER 2 input.
19. AUTO ADJ. Button
Use this button to adjust an RGB source (COMPUTER
1 or 2) for an optimal picture. See page 35.
20. LAN Button
Press this button to select the LAN (Local Area Net-
work) connection.
21. PIC-MUTE Button
This button turns off the image and sound for a short
period of time. Press again to restore the image and
sound. See page 39.
22. VOLUME +/– Buttons
Press (+) to increase the volume and (–) to decrease
it. See page 35.23. FREEZE Button
This button will freeze a picture. Press again to re-
sume motion. See page 39.
24. HELP Button
Provides the Information screen. See page 40.
25. ASPECT Button
Press this button to display the Aspect Ratio select
menu. See page 81.
26. VIEWER Button
Press this button to select the Viewer source. See page
64.
27. SLIDE +/- Buttons
Press (+) to select the next folder or slide and press
(–) to select the previous folder or slide.
28. PICTURE Button
Press to display the picture adjustment screen. Press-
ing this button sequentially selects Brightness →
Contrast → Color → Hue → Sharpness → Wall
Color. See pages 79 and 80.
29. 3D REFORM Button
Press this button to enter 3D Reform to correct the
keystone (trapezoidal) distortion, and make the im-
age square. See pages 33 and 43. 
						

							12
1. Introduction
30°
30° 30° 30°
Battery Installation
1Remove the battery cover.
NOTE: Do not pull the battery
cover by force. Doing so can
result in it coming off.
2Remove both old batteries and
install new ones (AAA). Ensure
that you have the batteries po-
larity (+/ –) aligned correctly.3Slip the cover back over the bat-
teries until it snaps into place.
NOTE: Do not mix different types of
batteries or new and old batteries.
Remote sensor on projector cabinet
7m/22 feet
•The infrared signal operates by line-of-sight up to a distance of about 22 feet/7 m and within a 60-degree angle of
the remote sensor on the projector cabinet.
•The projector will not respond if there are objects between the remote control and the sensor, or if strong light falls
on the sensor.
Weak batteries will also prevent the remote control from properly operating the projector.
Remote Control Precautions
•Handle the remote control carefully.
•If the remote control gets wet, wipe it dry immediately.
•Avoid excessive heat and humidity.
•If you will not be using the remote control for a long time, remove the batteries.
•Do not place the batteries upside down.
•Do not use new and old batteries together, or use different types of batteries together.
•Dispose of used batteries according to your local regulations.
Operating Range for Wireless Remote Control
1 212
Remote control 7m/22 feet 
						

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2
Installation and Connections
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 Setting Up the Screen and the Projector ................... 14
Selecting a Location ............................................................................................. 14
Throw Distance and Screen Size ......................................................................... 15
 Making Connections .................................................. 17
Enabling the computer’s external display ............................................................. 17
Connecting Your PC or Macintosh Computer ....................................................... 17
To connect SCART output (RGB) ......................................................................... 18
Connecting an External Monitor ........................................................................... 19
Connecting Your DVD Player with Component Output ......................................... 20
Connecting Your VCR or Laser Disc Player .......................................................... 21
Connecting to a Network ...................................................................................... 22
Inserting and Removing a PC Card ...................................................................... 24
Connecting the Supplied Power Cable ................................................................. 26