NEC Lt140 Ultra-portable Projector Users Manual

							Ultra-Portable Projector
MultiSync LT84/LT140
UserÕs Manual 
						

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IMPORTANT INFORMATION
Precautions
Please read this manual carefully before using your NEC
MultiSync LT84/LT140 Projector and keep the manual
handy for future reference.
Your serial number is located under the name plate label
on the left side of your MultiSync LT84/LT140. Record it
here:
CAUTION
To turn off main power, be sure to remove the
plug from power outlet.
The power outlet socket should be installed
as near to the equipment as possible, and
should be easily accessible.
CAUTION
TO PREVENT SHOCK, DO NOT OPEN THE
CABINET.
NO USER-SERVICEABLE PARTS INSIDE.
REFER SERVICING TO QUALIFIED NEC
SERVICE PERSONNEL.
This symbol warns the user that uninsulated
voltage within the unit may be sufficient to
cause electrical shock. Therefore, it is dan-
gerous to make any kind of contact with any
part inside of the unit.
This symbol alerts the user that important in-
formation concerning the operation and main-
tenance of this unit has been provided. The
information should be read carefully to avoid
problems.
WARNING
TO PREVENT FIRE OR SHOCK, DO NOT EXPOSE THIS
UNIT TO RAIN OR MOISTURE.
DO NOT USE THIS UNITÕS GROUNDED PLUG WITH AN
EXTENSION CORD OR IN AN OUTLET UNLESS ALL
THREE PRONGS CAN BE FULLY INSERTED.
DO NOT OPEN THE CABINET. THERE ARE HIGH-VOLT-
AGE COMPONENTS INSIDE. ALL SERVICING MUST BE
DONE BY QUALIFIED NEC SERVICE PERSONNEL.
DOC Compliance Notice
This Class A digital apparatus meets all requirements of
the Canadian Interference-Causing Equipment Regula-
tions.3. GSGV Acoustic Noise Information Ordinance:
The sound pressure level is less than 70 dB (A) accord-
ing to ISO 3744 or ISO 7779.
RF Interference
WARNING
The Federal Communications Commission does not
allow any modifications or changes to the unit EXCEPT
those specified by NEC Technologies in this manual.
Failure to comply with this government regulation could
void your right to operate this equipment.
This equipment has been tested and found to comply
with the limits for a Class A digital device, pursuant to
Part 15 of the FCC Rules.
These limits are designed to provide reasonable pro-
tection against harmful interference in a commercial
installation. This equipment generates, uses and can
radiate radio frequency energy and, if not installed and
used in accordance with the instructions, may cause
harmful interference to radio communications. Opera-
tion of this equipment in a residential area is likely to
cause harmful interference in which case the user will
be required to correct the interference at their own
expense.
In UK, a BS approval power cable with moulded plug
has a Black (five Amps) fuse installed for use with this
equipment. If a power cable is not supplied with this equip-
ment please contact your supplier. 
						

							EÐ3
Cleaning
1. Unplug the projector before cleaning.
2. Clean the cabinet periodically with a damp cloth. If heavily
soiled, use a mild detergent. Never use strong detergents
or solvents such as alcohol or thinner.
3. Use a blower or lens paper to clean the lens, and be careful
not to scratch or mar the lens.
Lamp Replacement
¥ To replace the lamp, follow all instructions provided on page
E-33.
¥ Be sure to replace the lamp when the Status light comes
on. If you continue to use the lamp after 1000 hours of use,
the lamp bulb may shatter, and pieces of glass may be scat-
tered in the lamp case. Do not touch them as the pieces of
glass may cause injury. If this happens, contact your NEC
dealer for lamp replacement.
¥ Allow a minimum of ONE minute to elapse between turning
the lamp off and on.
High voltage is applied to the lamp immediately when the
power is turned on.
Therefore turning the power off and quickly back on may
shorten the life of your lamp and result in damage to your
projector.
Important Safeguards
These safety instructions are to ensure the long life of
your projector and to prevent fire and shock. Please read
them carefully and heed all warnings.
Installation
1. For best results, use your projector in a darkened room.
2. Place the projector on a flat, level surface in a dry area away
from dust and moisture.
3. Do not place your projector in direct sunlight, near heaters
or heat radiating appliances.
4. Exposure to direct sunlight, smoke or steam can harm inter-
nal components.
5. Handle your projector carefully. Dropping or jarring can dam-
age internal components.
6. Do not place heavy objects on top of the projector.
7. If you wish to have the projector installed on the ceiling:
a.Do not attempt to install the projector yourself.
b. The projector must be installed by qualified technicians
in order to ensure proper operation and reduce the risk
of bodily injury.
c. In addition, the ceiling must be strong enough to support
the projector and the installation must be in accordance
with any local building codes.
d. Please consult your dealer for more information.
Power Supply
1. The projector is designed to operate on a power supply of
100-120 or 200-240 V 50/60 Hz AC. Ensure that your power
supply fits this requirement before attempting to use your
projector.
2. Handle the power cable carefully and avoid excessive bend-
ing. A damaged cord can cause electric shock or fire.
3. If the projector is not to be used for an extended period of
time, disconnect the plug from the power outlet. 
						

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Fire and Shock Precautions
1. Ensure that there is sufficient ventilation and that vents are
unobstructed to prevent the build-up of heat inside your pro-
jector. Allow at least 3 inches (10cm) of space between your
projector and a wall.
2. Prevent foreign objects such as paper clips and bits of pa-
per from falling into your projector. Do not attempt to re-
trieve any objects that might fall into your projector. Do not
insert any metal objects such as a wire or screwdriver into
your projector. If something should fall into your projector,
disconnect it immediately and have the object removed by a
qualified NEC service personnel.
3. Do not place any liquids on top of your projector.
Warnings
¥ Do not look into the lens while the projector is on. Serious
damage to your eyes could result.
¥ Keep any items such as magnifying glass out of the light
path of the projector. The light being projected from the lens
is extensive, therefore any kind of abnormal objects that
can redirect light coming out of the lens, can cause unpre-
dictable outcome such as fire or injury to the eyes.
¥ Do not cover the lens with the supplied lens cap or equiva-
lent while the projector is on. Doing so can lead to melting of
the cap and possibly burning your hands due to the heat
emitted from the light output.
¥ Do not hold the lens part. Doing so may cause the risk of
injuly.
For the optional full function remote control with
the laser pointer
¥ Do not look into the laser pointer while it is on and do
not point the laser beam at another person. Serious in-
jury could result. 
						

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TABLE OF CONTENTS
1. INTRODUCTION
Introduction to the MultiSync LT84/LT140 Projector .... E-6
Getting Started ............................................................ E-6
Getting to Know Your MultiSync LT84/LT140 Projector.... E-7
Front Features ......................................................... E-7
Rear Features ......................................................... E-7
Bottom Features ...................................................... E-7
Top Features ........................................................... E-8
Terminal Panel Features ......................................... E-9
Remote Control Features ...................................... E-10
2. INSTALLATION
Setting Up Your Projector ........................................... E-12
Selecting a Location .................................................. E-12
Using a Tabletop or Cart ............................................ E-12
Distance Chart ........................................................... E-13
Ceiling Installation ..................................................... E-14
Reflecting the Image .................................................. E-14
Wiring Diagram .......................................................... E-15
3. OPERATION
General Controls ....................................................... E-17
Using the Menus ........................................................ E-17
Using a USB Mouse .................................................. E-17
Menu Tree .................................................................. E-18
Menu Elements .......................................................... E-19
Menu Descriptions & Functions ................................. E-20
Source Select ............................................................ E-20
RGB ...................................................................... E-20
Video/S-Video ....................................................... E-20
PC Card Viewer ..................................................... E-20
Adjustments ............................................................... E-20
Picture ................................................................... E-20
Volume .................................................................. E-20
Image .................................................................... E-20
Auto Adjust ....................................................... E-21
Position ............................................................. E-21
Pixel Adjust ....................................................... E-21
Resolution ......................................................... E-21
Color Temperature ................................................ E-21
Keystone ............................................................... E-21
Factory Default ...................................................... E-21
Image Options ........................................................... E-21
Image Mode .......................................................... E-21
Aspect Ratio ..................................................... E-21
Video Mode ........................................................... E-22
Gamma ............................................................. E-22
Noise Reduction ............................................... E-22
Color Matrix ...................................................... E-22
Projector Options ....................................................... E-22
Menu ..................................................................... E-22
Language .............................................................. E-22
Source Display ...................................................... E-22
Projector Pointer ................................................... E-22Setup ......................................................................... E-23
Orientation ............................................................ E-23
Background ........................................................... E-23
Signal Select ......................................................... E-23
Auto Start .............................................................. E-23
Power Panagement ............................................... E-23
Power Off Confirmation ......................................... E-23
Mouse Settings ..................................................... E-23
Keystone Save ...................................................... E-23
White Segment ..................................................... E-23
Clear Lamp Hour Meter ........................................ E-23
PC Card Viewer Options ....................................... E-24
Capture Options .................................................... E-24
Tools .......................................................................... E-24
Capture ................................................................. E-24
PC Card Files ........................................................ E-25
ChalkBoard ........................................................... E-25
Help ........................................................................... E-25
Contents ................................................................ E-25
Source Information ................................................ E-25
Projector Information ............................................. E-25
Using the PC Card Viewer Fucntion .......................... E-26
Features ................................................................ E-26
Inserting and Ejecting a CompactFlashª Card .... E-26
Installing the PC Card Viewer
Software ................................................................ E-27
Starting Up the PC Card Viewer Software
  on your PC (PC Card Viewer Utility 1.0) ............. E-27
Operating the PC Card Viewer Function
  from the Projector (playback) .............................. E-28
Capturing Images Displayed on the Projector ....... E-30
Viewing Digital Images .......................................... E-31
Uninstalling the PC Card Viewer Software ............ E-31
Terminology ........................................................... E-32
4. MAINTENANCE
Replacing the Lamp ................................................... E-33
Remote Control Battery Installation ........................... E-34
Operating Range ....................................................... E-34
5. TROUBLESHOOTING
Status Light Messages .............................................. E-35
Common Problems & Solutions ................................. E-35
When Using the PC Card Viewer Function ................ E-36
6. SPECIFICATIONS
Optical/Electrical/Mechanical ..................................... E-37
Cabinet Dimensions .................................................. E-38
D-Sub Pin Assignments ............................................. E-40
Timing Chart .............................................................. E-41
PC Control Codes ...................................................... E-42
Cable Connection ...................................................... E-43
CompactFlash is a trademark of San Disk Corporation. 
						

							EÐ6
1. INTRODUCTION
Introduction to the MultiSync LT84/LT140
Projector
This section introduces you to your new MultiSync LT84 (SVGA)/
LT140 (XGA) Projector describes the features and controls.
Congratulations On Your Purchase Of The MultiSync LT84/
LT140 Projector
The MultiSync LT84/LT140 is one of the very best projectors avail-
able today. The MultiSync LT84/LT140 enables you to project pre-
cise images up to 300 inches across (measured diagonally) from your
PC or Macintosh computer (desktop or notebook), VCR, DVD player,
document camera, a laser disc player, or PC Card Viewer.
You can use the projector on a tabletop or cart, you can use the pro-
jector to project images from behind the screen, and the projector can
be permanently mounted on a ceiling*
1. The remote control can be
used wirelessly.
Features youÕll enjoy:
¥ Simple set up and operation.
¥ Hot air blown from the vents does not bother the audience dur-
ing your presentation since the vents are located on the front and
bottom.
¥ A high-performance AC120 watt P-VIP lamp.
¥ A wireless card remote control that can be stored in the projec-
tor.
¥ The manual zoom control enables you to adjust the image to be
between 25 and 300 inches (measured diagonally).
¥ Keystone correction allows you to correct trapezoidal distortion
so that the image is square.
¥ You can choose between video modes depending on your source:
ÒnormalÓ for a typical picture, ÒnaturalÓ for true color reproduc-
tion.
¥ The built-in PC Card Viewer allows you to start your presenta-
tion even when a PC is not available at the site.
¥ The ÒCaptureÓ enables you to capture rhe current projected im-
age.
¥ An image can be projected from in front or behind a screen, and
the projector can even be installed on the ceiling.
¥ NECÕs exclusive Advanced AccuBlend intelligent pixel blend-
ing technology - an extremely accurate image compression tech-
nology - offers a crisp image with SXGA (128021024) resolu-
tion*
3 . You can select any point on the screen with the pointer
and enlarge the selected area.
¥ Supports most IBM VGA, SVGA, XGA*
2 , SXGA(with Ad-
vanced AccuBlend)*3, Macintosh, component signal (YCbCr /
YPbPr) or any other RGB signals within a horizontal frequency
range of 15 to 85 kHz and a vertical frequency range of 50 to 85
Hz. This includes NTSC, PAL, PAL60, SECAM and NTSC4.43
standard video signals.
NOTE: Composite video standards are as follows:
NTSC: U.S. TV standard for video in U.S. and Canada.
PAL: TV standard used in Western Europe.
PAL60: TV standard used for NTSC playback on PAL TVs.
SECAM: TV standard used in France and Eastern Europe.
NTSC4.43: TV standard used in Middle East countries.¥ The supplied card remote control can be used without a cable,
and you can even use the optional full function remote control
and mouse adapter to operate your PC or Macintosh mouse
wirelessly from across the room with the built-in remote mouse
receiver.
¥ You can control the projector with a PC using the PC Control
port.
¥ The contemporary cabinet design is light, compact, easy to carry,
and complements any office, boardroom or auditorium.
¥ Eight kinds of pointers are available for your presentation.
¥  USB terminal allows  USB mouse operation*
4.
*1Do not attempt to mount the projector on a ceiling yourself.
The projector must be installed by qualified technicians in order
to ensure proper operation and reduce the risk of bodily injury.
In addition, the ceiling must be strong enough to support the pro-
jector and the installation must be in accordance with any local
building codes.  Please consult your dealer for more information.
*2 An XGA image (10242768) is converted into an 8002600 crisp
image with NECÕs Advanced AccuBlend on LT84.
*3 An SXGA image (128021024) is converted into a 10242768
crisp image with NECÕs Advanced AccuBlend on LT140.
*4 The USB terminal meets the USB1.0 specification and accepts a
USB mouse only.
Getting Started
The fastest way to get started is to take your time and do everything
right the first time. Take a few minutes now to click through the CD-
ROM and review the userÕs manual. This may save you time later on.
At the beginning of each section of the manual youÕll find an over-
view. If the section doesnÕt apply, you can skip it. 
						

							EÐ7
MENU
ENTERCANCELSELECT
POWERSTATUS
ON/OFFSOURCE
AUTO ADJUST
Getting To Know Your MultiSync LT84/LT140 Projector
Front Features
MENU
ENTERCANCELSELECT
POWERSTATUS
ON/OFFSOURCEAUTO ADJUST
Lens and Lens Cap
Focus Ring
Zoom Ring
Front Remote Sensor
Rear Remote Sensor
Ventilation (outlet)Front Adjustable Foot
One-Push Tilt Button
Monaural Speaker (1W)
Lever-Type Adjustable Rear Foot
AC Input
Connect the supplied power
cableÕs three-pin plug here.
Front Adjustable Foot
One-Push Tilt Button
Lamp Cover
Bottom FeaturesLamp Cover Screw
Ventilation (outlet)
Rear Features
Controls
Terminal Panel
Card Remote Control SlotThe card remote control can be
stored in the cabinet. To insert or
pull out the card remote control, fol-
low the procedures:
Press down to release
Push to insert 
						

							EÐ8
Top Features
1 Source Button
Use this button to select a video source such as a PC, VCR, DVD
player or PC Card Viewer (CompactFlash card installed).
2 Auto Adjust Button
Use this button to adjust Position-H/V and Pixel Clock/Phase for
an optimal picture. Some signals may not be displayed correctly or
take time to switch to another.
3 Menu Button
Displays the main menu for operation.
4 Select (st
§ ©) / (+) (Ð) Buttons
st: 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.
A press of the 
© button executes the selection. When no menus
appear, these 
§ © buttons work as a volume control.
When the pointer is displayed,  these 
§ © st buttons move the
pointer.
5 Enter Button
Executes your menu selection and activates items selected from
the menu.
6 Cancel Button
Press this button to exit ÒMenusÓ. Press this button to return the
adjustments to the last condition while you are in the adjustment
or setting menu.7 Status Indicator
When this is lit red continually, itÕs warning you that the projection
lamp has exceeded 1000 hours of service. After this light appears,
it is advisable to replace the projection lamp as soon as possible.(See
page E-33)
In addition the message ÒLAMP USAGE XX HOURSÓ appears
continually when the on-screen menu is not displayed. If this light
blinks red rapidly, it indicates that the lamp cover is not attached
properly or the projector is overheated. See the Status Light Mes-
sages on page E-35 for more details.
8 Power Indicator
When this indicator is green, the projector is on; when the indica-
tor is amber, it is in standby mode.
9 Power Button
Use this button to turn the power on and off when the power is
supplied and the projector is in standby mode.
NOTE: To turn off the projector, press and hold this button for a
minimum of two seconds.
MENU
ENTERCANCEL
SELECT
POWER STATUS
ON
/OFF
SOURCE AUTO ADJUST
9 1
5
7
86 4 3 2 
						

							EÐ9
Slot for Kensington
MicroSaver Security System
Terminal Panel Features
PC CONTROLUSB
RGB INPUT S-VIDEOVIDEO AUDIO
L
(MONO)R PC CARD
ACCESS
MOUSE OUT
14
56 7 89 10
CANCEL
ERON
/OFF
11
This panel is located on the left side and is where you connect your
cables.
1 USB (Mouse) Terminal
Connect a commercially available mouse that supports USB. You
can operate the menu or PC Card Viewer with the USB mouse via
this terminal.
Note that this terminal is not used with a computer and that there
may be some brands of USB mouse that the projector does not
support.
2 PC Card Access Indicator
Lights while accessing a CompactFlash memory card.
3 Eject Button
Press to eject a CompactFlash memory card.
4 PC Card Access Slot
Insert a CompactFlash memory card here.
5 PC Control Port (Mini DIN 8 Pin)
Use this port to connect your PC to control your projector. This
enables you to use your PC and serial communication protocol to
control the projector. If you are writing your own program, typical
PC control codes are on page E-42.
A cap is put on the port at the factory. Remove the cap when using
the port.
6 Mouse Output Port (Mini DIN 8 Pin)
Not available when the supplied card remote is used.
Use this port to operate your computerÕs mouse functions from the
NEC optional full function remote control. When your computer
is connected here with the NEC optional full function remote con-
trol (LT40RT), the remote sensors on the projector cabinet will
receive your mouse commands.7 RGB Input/ Component Input Connector (Mini D-Sub 15 pin)
Connect your PC or other RGB equipment such as IBM or compatible
computers. Use the signal cable thatÕs supplied to connect to a PC. Or
connect a Macintosh or compatible computer here using the signal
cable and the pin adapter that is supplied. This also serves as a compo-
nent input connector which allows you to connect a component video
output of a component equipment such as a DVD player.
8 S-Video Input (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.
9 Video Input (RCA)
Connect a VCR, DVD player, laser disc player, or document cam-
era here to project video.
10 Left Channel/Mono Audio Input Jack (RCA)
This is the left channel audio input for stereo sound coming from
video equipment or audio system. This also serves as your monau-
ral audio input. (Video and S-video only)
   Right Channel Audio Input Jack (RCA)
This is the right channel audio input for stereo sound. (Video and
S-video only)
NOTE: Although stereo Audio input jacks are provided, the pro-
jector will only produce Mono sound. This is due to one speaker
limitation of the projector.
11 Built-in Security Slot (
)
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.
32 
						

							EÐ10 Wireless Card Remote Control
1 Source Button
Press to select a video source.
2 Auto Adjust Button
Use this button to adjust Position-H/V and Pixel Clock/Phase for
an optimal picture. Some signals may not be displayed correctly,
or in some cases it may take some time for a source to be switched
to another.
3 Menu Button
Displays the main menu for operation.
Remote Control Features
SELECT
POINTER
HELP
RD-361E
PIC.
MUTE
MAGNIFY
SOURCEAUTO
ADJ.
MENU
ENTERCANCEL
R-CLICK
HELP
PIC-MUTE POINTER
MAGNIFY SOURCE AUTO ADJ.
COMPUTER PROJECTOR
POWER
+-
+
-
MENU
PJ
SA
?
OFF ON
LASER
CANCEL
1
2
3
4
8
9
7
10
61117
16
12
13
14
5
4 Select (st§ ©) / Mouse / (+) (Ð) Buttons
st: 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.
A press of the 
© button executes the selection. When no menus
appear, these 
§ © buttons work as a volume control.
When the pointer is displayed,  these 
§ © st buttons move the
pointer. The Mouse button is available on the full function remote
control only.
NOTE: The Mouse Output port is not available on the card re-
mote control because mouse codes are not output.
5 Cancel/ Right Click Button
Press this button to exit ÒMenusÓ. Press this button to return the
adjustments to the last condition while you are in the adjustment
or setting menu. The Right-Click button is available on the full
Wireless Card Remote Control
(supplied)Full Function Remote Control
LT40RT (optional)
18
Remote Jack
Not available on LT84/LT140 NOTE: For the supplied card re-
mote control, remove the transpar-
ent insulation tape by pulling it
before use. See page E-34 for bat-
tery installation.
MnO2-LiCELL3VOLTSJAPANH
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