NEC Lt81 Projector Users Manual

							Part No.  78409942
Printed in Japan
Ultra-Portable Projector
Ultra-Portable Projector
Projector
UserÕs Manual
NEC Technologies, Inc.
1250 N. Arlington Heights Road, Suite 500
Itasca, Illinois 60143-1248
 MultiSync
¨
 LT 81
ª
/10 0
ª
NEC Technologies 
						

							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 protection 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 instruc-
tions, may cause harmful interference to radio communications. Operation 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.
DOC Compliance Notice
This Class A digital apparatus meets all requirements of the Canadian Interfer-
ence-Causing Equipment Regulations.
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-VOLTAGE COMPONENTS INSIDE. ALL SERVICING MUST BE
DONE BY QUALIFIED NEC SERVICE PERSONNEL.
2
Precautions
Please read this manual carefully before using your NEC MultiSync LT81/LT 100 P rojector and keep the manual handy for future reference.
Your serial number is located beneath the main power switch on the back of your MultiSync LT81/LT100.  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.
IMPORTANT INFORMATION
CAUTION
LASER RADIATION-
DO NOT STARE INTO BEAM
WAVE LENGTH: 670 nm
MAX. OUTPUT: 1 mW
CLASS II LASER PRODUCT
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
dangerous to make any kind of contact with any part inside of
the unit.
This symbol alerts the user that important information concern-
ing the operation and maintenance of this unit has been pro-
vided. The information should be read carefully to avoid prob-
lems.
1
CAUTION
LASER RADIATION-
DO NOT STARE INTO BEAM
WAVE LENGTH: 645 nm (640-660 nm)
MAX. OUTPUT: 1 mW
CLASS II LASER PRODUCT
LT100 Remote Control
LT81 Remote Control 
						

							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
¥ Perform lamp replacement in accordance with the instructions on page 81.
¥ 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 scattered 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.
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 projector. 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 paper from falling into
your projector. Do not attempt to retrieve any objects that might fall into your
projector. Do not insert any metal objects such as a wire or screwdriver into
your project. If something should fall into your projector, disconnect it
immediately and have the object removed by a qualified NEC service person.
3. Do not place any liquids on top of your projector.
¥ Do not look into the lens while the projector is on. Serious
damage to your eyes could result.
¥ Do not look into the laser pointer while it is on and do not point
the laser beam at another person. Serious injury could result.
4
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 internal components.
5. Handle your projector carefully. Dropping or jarring can damage internal
components.
6. Do not place heavy objects on top of the projector.7. If installing the projector on the ceiling:
a. The ceiling must be strong enough to support the projector and the
installation must be in accordance with any local building codes.
b. The projector must be installed by qualified NEC service personnel.
Power Supply
1. The projector is designed to operate on a power supply of 100-120 or 220-240
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 bending. 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.
3 
						

							Ce symbole a pour but de prŽvenir lÕutilisateur de la
prŽsence dÕune tension dangereuse, non isolŽe se
trouvant ˆ lÕintŽrieur de lÕappareil. Elle est dÕune
intensitŽ suffisante pour constituer un risque

lÕintŽrieur de cet appareil.
Ce symbole a pour but de prŽvenir lÕutilisateur de la
prŽsence dÕimportantes instructions concernant
lÕentretien et le fonctionnement de cet appareil. Par


ATTENTION
RISQUE DÕELECTROCUTION NE PAS OUVRIR
ATTENTION
Pour couper lalimentation principale, sassurer de retirer la fiche de la prise de courant.

5
ATTENTION
RAYONNEMENT LASER NE PAS
REGARDER DANS LE FAISCEAU
LONGUEUR DÕONDE: 670 nm
MAX. SORTIE: 1 mW
APPREIL A LASER DE CLASSE 2
DOC avis de conformation
DOC avis de conformation
Cet appareil numŽrique de la classe A respecte toutes les exigences du

Importantes prŽcautions de sŽcuritŽ
Les points suivants sont des prŽcautions de sŽcuritŽ importantes destinŽes ˆ
garantir une longue durŽe de service du projecteur et afin dÕŽviter un incendie
et des risques dÕŽlectrocution. SÕassurer de lire attentivement ces prŽcautions de
sŽcuritŽ et respecter tous les avertissements dŽcrits ci-dessous.
Installation
1. 
2. Placer le projecteur sur une surface ˆ niveau et dans un endroit sec exempt de

3. 
dÕautres appareils de chauffage.
AVERTISSEMENT
AFIN DE REDUIRE LES RISQUES DÕINCENDIE OU DÕELECTROCUTION,
NE PAS EXPOSER CET APPAREIL A LA PLUIE OU A LÕHUMIDITE. AUSSI,
NE PAS UTILISER LA FICHE POLARISEE AVEC UN PROLONGATEUR OU
UNE AUTRE PRISE DE COURANT SAUF SI CES LAMES PEUVENT ETRE
INSEREES A FOND. NE PAS OUVRIR LE COFFRET, DES COMPOSANTES
HAUTE TENSION SE TROUVENT A LÕINTERIEUR. LAISSER A UN PER-
SONNEL QUALIFIE LE SOIN DE REPARER CET APPAREIL.
6
ATTENTION
RAYONNEMENT LASER NE PAS
REGARDER DANS LE FAISCEAU
LONGUEUR DÕONDE: 645 nm (640-660 nm)
MAX. SORTIE: 1 mW
APPREIL A LASER DE CLASSE 2
TŽlŽcommande LT100 TŽlŽcommande LT81 
						

							4. La fumŽe, la vapeur et lÕexposition aux rayons directs du soleil risquent de
dŽtŽriorer sŽrieusement les composantes internes.
5. Eviter des manipulations brusques lors du dŽplacement du projecteur, car un
choc violent pourrait endommager les composantes internes.
6. Ne pas deposer dÕobjets lourds sur le dessus du projecteur.
7. Lors de lÕinstallation du projecteur au plafond, respecter les instructions
suivantes.
a. 

b. 
Alimentation
1. 
60Hz. SÕassurer que la tension dÕalimentation locale satisfait cette exigence
avant dÕutiliser le projecteur.
2. Manipuler le c‰ble dÕalimentation avec prŽcaution et Žviter de le plier
excessivement. Un cordon endommagŽ risque de provoquer une
Žlectrocution ou un incendie.3. Si le projecteur nÕest pas utilisŽ pendant une pŽriode prolongŽe, retirer la fiche
de la prise secteur.
Nettoyage
1. DŽbrancher le projecteur de la prise dÕalimentation avant le nettoyage.
2. 
tenaces, utiliser une solution dÕun dŽtergent doux. Ne jamais utiliser de
dŽtergents puissants ou des solvants, tel que lÕalcool ou un diluant pour
nettoyer le projecteur.
3. Utiliser un appareil diffuseur chauffant ou du papier de nettoyage de lentille
disponible dans le commerce pour nettoyer la lentille.
Ne pas frapper ou rayer la surface de la lentille, car des dŽfauts risquent de se
produire sur la surface de la lentille.
7
Remplacement de la lampe
¥ Effectuer le remplacement de la lampe suivant les instructions de la page 85.
¥ Assurez-vous de bien remplacer la lampe lorsque le voyant dÕusure


ŽparpillŽes dans le compartiment de la lampe. Ne  les touchez pas car elles
peuvent vous blesser. Dans ce cas, contactez votre revendeur NEC afin de
procŽder au remplacement de la lampe.
¥ 
rallumer. Une haute tension est immŽdiatement appliquŽe ˆ la lampe quand
celle-ci est mise sous tension. Par consŽquent, Žteindre, puis tout de suite
rallumer peut abrŽger la vie de votre lampe et endommager votre projecteur.
PrŽcautions pour Žviter un incendie ou
une Žlectrocution
1. 
de chaleur ˆ lÕintŽrieur du projecteur. SÕassurer que les trous de ventilation ne
sont pas obstruŽs. Laisser un espace dÕau moins 10 cm (quatre pouces) entre
le projecteur et les murs.2. Eviter que des objets Žtrangers, des agrafes, des clous et du papier, par


tourne-vis, par exemple ˆ lÕintŽrieur du projecteur. Si un objet tombe ˆ
lÕintŽrieur du projecteur, le dŽbrancher immŽdiatement et contacter un
dŽpanneur qualifiŽ pour retirer lÕobjet.
3. Ne pas placer des liquides sur le dessus du projecteur.
¥ Ne regardez pas ˆ lÕintŽrieur de lÕobjectif lorsque le projecteur
est en marche. Vous risquez de vous blesser gravement aux
yeux.
¥ 
est en marche et ne dirigez pas le rayon laser sur une autre
personne. Vous risquez de provoquer ue blessure grave.
8 
						

							NEC MultiSync¨ Projector
Products
NEC Technologies, Inc. (hereafter NECTECH) warrants this product to be free
from defects in material and workmanship under the following terms.
HOW LONG IS THE WARRANTY?
Parts and labor are warranted for (2) two years from the date of the first customer
purchase. The lamp is warranted for 1000 hours of operating time or six months,
whichever comes first.
WHO IS PROTECTED?
This warranty may be enforced only by the first purchaser.
WHAT IS COVERED AND WHAT IS NOT COVERED
Except as specified below, this warranty covers all defects in material or
workmanship in this product. The following are not covered by the warranty:
1. Any product which is not distributed in the U.S.A. or Canada by NECTECH
or which is not purchased in the U.S.A. or Canada from an authorized
NECTECH dealer. For a listing of authorized dealers please contact
NECTECH at 800-836-0655.2. Any product on which the serial number has been defaced, modified or
removed. NECTECHÕS LIABILITY FOR ANY DEFECTIVE PRODUCT
IS LIMITED TO THE REPAIR OR REPLACEMENT OF THE PRODUCT
AT OUR OPTION. REPLACEMENT PRODUCTS MAY BE NEW OR
ÔLIKE NEWÕ.
3. NECTECH SHALL NOT BE LIABLE FOR : Damage, deterioration or
malfunction resulting from:
a. Accident, misuse, abuse, neglect, fire, water, lightning or other acts of
nature, unauthorized product modification, or failure to follow instructions
supplied with the product.
b. Repair or attempted repair by anyone not authorized by NECTECH.
c. Any shipment of the product (claims must be presented to the carrier).
d. Removal or installation of the product.
e. Any other cause which does not relate to a product defect.
4. Cartons, carrying cases, batteries, external cabinets, magnetic tapes, or any
accessories used in connection with the product.
WHAT NEC WILL COVER
We will pay labor and material expenses for covered items. But we will not pay
for the following:
1. Removal or installation charges.
LIMITED WARRANTY9
2. Costs of initial technical adjustments (set-up), including adjustment of user
controls. These costs are the responsibility of the NECTECH dealer from
whom the product was purchased.
3. Payment of shipping charges.
HOW YOU CAN GET WARRANTY SERVICE
1. To obtain service on your product, consult the dealer from whom you
purchased the product.
2. Whenever warranty service is required, the original dated invoice (or a copy)
must be presented as proof of warranty coverage. Please be prepared to
describe or demonstrate the problem to your dealer.
3. For the name of the nearest NECTECH authorized service center, call
NECTECH at 800-836-0655.
LIMITATION OF IMPLIED WARRANTIES
ALL IMPLIED WARRANTIES, INCLUDING WARRANTIES OF MER-
CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ARE
LIMITED IN DURATION TO THE LENGTH OF THIS WARRANTY.
EXCLUSION OF DAMAGES
NECTECHÕS LIABILITY FOR ANY DEFECTIVE PRODUCT IS LIMITED
TO THE REPAIR OR REPLACEMENT OF THE PRODUCT AT OUR
OPTION. NECTECH SHALL NOT BE LIABLE FOR:1. DAMAGE TO OTHER PROPERTY CAUSED BY ANY DEFECTS IN
THIS PRODUCT, DAMAGES BASED UPON INCONVENIENCE, LOSS
OF USE OF THE PRODUCT, LOSS OF TIME, COMMERCIAL LOSS;
OR
2. ANY OTHER DAMAGES, WHETHER INCIDENTAL, CONSEQUEN-
TIAL OR OTHERWISE. SOME STATES DO NOT ALLOW LIMITA-
TIONS ON HOW LONG AN IMPLIED WARRANTY LASTS AND/OR
DO NOT ALLOW THE EXCLUSION OR LIMITATION OF INCIDEN-
TAL OR CONSEQUENTIAL DAMAGES, SO THE ABOVE LIMITA-
TIONS AND EXCLUSIONS MAY NOT APPLY TO YOU.
HOW STATE LAW RELATES TO THE WARRANTY
This warranty gives you specific legal rights, and you may also have other rights
which vary from state to state.
FOR MORE INFORMATION, TELEPHONE 800-366-5213
NEC TECHNOLOGIES, INC.
1250 N. Arlington Heights Road, Suite 500
Itasca, Illinois 60143-1248
NOTE:   All products returned to NECTECH for service MUST have
prior approval. To get approval, call NEC Technologies at
800-836-0655.
10 
						

							1. Introduction
Introduction To The MultiSync LT81/LT100 Projector.................................... 13
How Do You Get Started?................................................................................ 15
WhatÕs In The Box? ......................................................................................... 15
Getting To Know Your MultiSync LT81/LT100 Projector................................ 17
Front Features........................................................................................... 17
Rear Features............................................................................................ 18
Top Features .............................................................................................. 19
Terminal Panel Features............................................................................ 21
Remote Control Features........................................................................... 25
2. Installation
Setting Up Your MultiSync LT81/LT100 Projector.......................................... 29
Selecting A  Location................................................................................. 30
Projection Distance................................................................................... 31
Using A Tabletop Or Cart.......................................................................... 35
Transporting And Storing The Projector.................................................... 37
Ceiling Installation.................................................................................... 41
Wiring Diagram............................................................................................... 43
Connecting Your PC Or Macintosh Computer................................................. 45
Connecting Your DVD Player.......................................................................... 51
Connecting Your Document Camera................................................................ 51
Connecting Your VCR Or Laser Disc Player.................................................... 52
Connecting An External Monitor..................................................................... 52
Connecting Your Remote Mouse Receiver....................................................... 53
TABLE OF CONTENTS11
3. Operation
General Controls.............................................................................................. 57
Using The Menus............................................................................................ 59
Menu Descriptions & Functions...................................................................... 61
Source Menu (Source Icons)..................................................................... 61
Image Adjust Menu(Sound And Picture Control Icons)............................. 63
Power Menu(Projector Control Icons) ..................................................... 67
Settings Menu(Maintenance Icons)........................................................... 69
Using the Viewer Function........................................................................ 71
4. Maintenance
Replacing The Lamp....................................................................................... 81
Remote Control Battery Installation................................................................ 83
Operating Range.............................................................................................. 84
5. Troubleshooting
Status Light Messages..................................................................................... 89
Common Problems & Solutions...................................................................... 91
6. Specifications
Optical / Electrical / Mechanical...................................................................... 93
Cabinet Dimensions........................................................................................ 95
D-Sub Pin Assignments................................................................................... 99
Timing Chart................................................................................................. 101
PC Control Command Reference................................................................... 103
Cable Connection.......................................................................................... 107
12 
						

							This section introduces you to your new MultiSync LT81 (SVGA)/
LT100 (XGA) Projector, provides a list of materials that comes with
your projector and describes the features and controls.
Congratulations On Your Purchase Of The
MultiSync LT81/LT100 Projector
The MultiSync LT81/LT100 is one of the very best projectors available
today. The MultiSync LT81/LT100 enables you to project precise
images up to 300 inches across (measured diagonally) from your PC or
Macintosh computer (desktop or notebook), VCR, DVD player, docu-
ment camera, or even a laser disc player.
You can use the projector on a tabletop or cart, you can permanently
mount it on a ceiling*
1, or you can use MultiSync LT81/LT100 Projec-
tor to project images from behind the screen. The remote control can be
used wirelessly or with a cable (only the LT100 can be connected with
a cable), and you can even use the remote control with the built-in
remote mouse receiver to operate the mouse on your PC or Mac.
INTRODUCTION 1
Features youll enjoy:
¥ Simple set up and operation.
¥ A high-performance 280 watt metal halide lamp that delivers a high
bright image, allowing you to make presentations with the lights on.
¥ A wireless remote control that operates the projector from any
angle.
¥ A laser pointer that s built into the remote control.
¥ The manual zoom control enables you to adjust the image to be
between 24 and 300 inches (measured diagonally).
¥ White balance control allows you to adjust the brightness and
contrast for each RGB color.
¥ You can choose between video modes depending on your source:
normal for a typical picture, natural for true color reproduction,
and camera for use with a document camera or low APL picture.
¥ The optional LT Viewer kit allows you to start your presentation
even when a PC is not available at the site.
¥ The image capture enables you to use the entire picture as a
background image or to create slides (optional LT Viewer required).13
INTRODUCTION14 ¥ An image can be projected from in front or behind a screen, and the
projector can even be installed on the ceiling.
¥ NEC Technologies exclusive AccuBlendª intelligent pixel blend-
ing technology - an extremely accurate image compression technol-
ogy - offers a crisp image with SXGA (128021024) resolution*
2 .
¥ Supports most IBM VGA, SVGA, XGA*
3, SXGA(with
AccuBlendª)*2 , Macintosh, or any other RGB signals within a
horizontal frequency range of 15.754 to 85 kHz (60 kHz : LT81) and
a vertical frequency range of 50 to 85 Hz. This includes NTSC,
PAL, 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.
SECAM: TV standard used in France and Eastern Europe.
NTSC4.43: TV standard used in Middle East countries.
¥ Accepts component video source such as DVD player with the Y/
Cb/Cr output.
¥ The remote control can be used with (LT100 only) or without a
cable, and you can even use the remote to operate your PC or
Macintosh mouse wirelessly from across the room with the built-in
remote mouse receiver.
¥ You can control your MultiSync LT81/LT100 Projector with a PC.
¥ The contemporary cabinet design is compact, easy to carry, and
complements any office, board room or auditorium.
*
1Installing the MultiSync LT81/LT100 LCD Projector on the ceiling
must be done by authorized NEC technicians. Consult your NEC
dealer for more information.
*
2An SXGA image (128021024) is converted into a 10242768
crisp image with NEC technologys AccuBlend on LT100.
*
3An XGA image (10242768) is converted into an 8002600 crisp
image with NEC technologys AccuBlend. 
						

							How Do You Get 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
training CD-ROM and review the userÕs manual. This may save you
hours later on. At the beginning of each section of the manual youll
find an overview. If the section doesnt apply, you can skip it.
WhatÕs In The Box?
Make sure your box contains everything listed. If any pieces are missing,
contact your dealer. Please save the original box and packing materials if
you ever need to ship your MultiSync LT81/LT100 Projector.
15
Batteries (AA22)Remote mouse receiverPin adapter for
Macintosh
Remote control
INTRODUCTION16
Mouse adapter (For Macintosh)
UserÕs manual
Signal cable
(15-Pin Mini D-Sub To 15-Pin Mini
D-Sub connector)Power cable
MultiSync
Ultra-Portable
Projector
Registration card
Mouse adapter (For IBM PS/2)
Introductory / Training CD-ROM
Serial cableCarrying case for LT100 Remote control case
Quick Connect Gide
Quick Connect Guide
¥ NEC MultiSync LT81/LT100
Projector
¥ Carrying Case
¥ Remote Control With Built-In
Laser Pointer
¥ Remote Cable (LT100 only)
¥ Remote Control Case
¥ Remote Mouse Receiver
¥ Signal Cable
(15-Pin Mini D-Sub To 15-Pin
Mini D-Sub Connector)¥Mouse Adapters for IBM PS/2 and Mac
¥ Serial Cable
¥ Pin Adapter for Macintosh
¥ Power Cable
¥ Two AA  Batteries
¥ Introductory / Training CD-ROM
¥ Users Manual
¥ Registration Card
¥ Quick Connect Guide
MultiSync LT
81/100
Carrying case for LT81
Remote Cable (LT100 only) 
						

							Getting To Know Your MultiSync LT81/LT100 Projector
Front FeaturesTop features
17
INTRODUCTION18
MEMU
SELECT
ENTER
STATUS
POWER ON / OFF
Monaural Speaker (1W)
Remote Sensor
Ventilation
Lens and lens Cap
Focus Ring
One-Touch Tilt Button (LT100 only)
Adjustable Foot Cooling Fan
Rear Features
MEMU
SELECT
ENTER
STATUS
POWER ON / OFF
AC IN
Remote Sensor
Power Switch
AC Input
Connect the supplied power
cableÕs three-pin plug here. Slot for Kensington MicroSaver Security
System Rear Foot
(Adjustable on LT100 only)
Terminal Panel
Carrying handleZoom Ring LeverOne-Touch Tilt Button (LT100 only)
Adjustable Foot
Remote Sensor
Remote SensorLever-type Rear Foot (LT81 only)
The above drawings show LT100 but most information
in this userÕs manual applies to both products.