NEC Lt81 Projector Users Manual

							Switching Slides
To switch slides, press SLIDE + or SLIDE Ð button. This will
cancel the Auto Play mode. To set the Auto Play mode, press the Menu
button to select ÒStartÓ from the Source menu and press the Enter
button on the cabinet or the Left Click button on the remote control.
This is valid only when the Auto Play mode is selected. See more
information about ÒAuto Play modeÓ for the Help file included with the
Viewer board.
* SLIDEÐ returns to the previous slide.
SLIDE+ advances to the next slide.
NOTE: Editing tasks such as deleting the data inside the flash memory
card cannot be accomplished with the projector. Use the exclusive soft-
ware on your PC for this purpose. If you accidentally delete data re-
quired for playback, playing back the data is not possible.
Effect Sound (LT100 only)
The Viewer function allows you to play back effect sound for the slide.
Playing back effect sound can be accomplished during the switching
slides or files only. To use this feature, you must first specify the effect
sound with the supplied software.
You can adjust volume by using the Volume button.Capturing the displayed image
The Viewer feature allows you to capture a screen image and store
it to a flash/CF memory card.
To capture a screen image and store it to a flash memory card;
Select Capture from the Settings menu and press the Enter button
on the cabinet or Left Click button on the remote control.
* To view the captured image
1. Select Select File from the Source menu and display a list
of files.
* A thumbnail (reduced image) of the first captured image
will be displayed.
2. Use the mouse pad (+) button to move the Multi-Cursor (blue
box) to the last file and press the Enter button on the cabinet or
the Left Click button on the remote control.
* This will display the image you captured first.
NOTE: The menu indicating that capturing is now performing
will be displayed during capturing. During this time do not re-
move the flash/CF memory card nor turn off the power of the
projector. Doing so may destroy the data of the flash/CF memory
card.
* When the flash memory card becomes full, replace it with a new
card.Display Digital Images
Displaying a picture from the projector is possible if the picture
meets one of the following requirements:
* The picture is stored on an MS-DOS formatted ATA flash
memory card.
* The picture is stored as a compatible format.
The on-board Viewer searches the PC Card directory for a JPEG or
BMP formatted images.
NOTE:
* Up to 128 images can be recognized as slides for one direc-
tory.
* To use special effects, read images from a flash/CF memory
card and edit them using the supplied software, then store them
to another flash/CF memory card.
8 7
564 3
12
File
File FileFile
File
File FileFileMulti Cursor
79
OPERATION 80 
						

							This section describes the simple maintenance procedures you should follow
to replace the lamp and replace the batteries in the remote control.
Replacing The Lamp
After your lamp has been operating for 1000 hours or longer, the Òsta-
tusÓ light in the cabinet will turn red. Even though the lamp may still be
working, replace it at 1000 hours to maintain optimal projector perform-
ance.
CAUTION
¥ DO NOT TOUCH THE LAMP immediately after it has been used. It will
be extremely hot. Allow at least one hour for the lamp to cool before
handling.
¥ DO NOT REMOVE ANY SCREWS except the lamp cover set screw
and  two lamp case screws. You could receive an electric shock.
¥ Turn off the main power to the projector and disconnect the power cord.
Allow at least one hour for the lamp to cool.
¥ The projector will turn off and go into stand by mode after 1100 hours of
service.  If this happens, be sure to replace the lamp. 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.
MAINTENANCE 4
Step 3
Step 4
Step 5
Lamp cover
81
Lamp replacement procedure
1. Switch off the main power and unplug the power cord.
2. Turn the main unit so that the bottom is up.
3. Loosen the lamp cover retaining screw.
4. Slide the lamp cover in the direction of the arrow and remove it.
CAUTION: Do not use a lamp other than the NEC replacement lamp.
Order this from your NEC dealer using your projectors model num-
ber.
5. Loosen the three retaining screws for the lamp housing.
(There is an interlock on the lamp housing to prevent the risk of electri-
cal shock. Do not attempt to circumvent this interlock.)
6. Holding the handle, pull the lamp housing forward and take it off.
7. Install the new lamp housing and fasten with the three screws.
8. Fasten the three screws for the lamp housing.
9. Install the lamp cover back in its original position and fasten with the
retaining screw.
10. Reset the lamp time.
Select the lamp usage time menu, then press the ON button on the re-
mote controller and hold it down for at least ten seconds.
NOTE: If resetting the lamp clock back to zero after 1100 hours of
service, press the Power Off (not Power On) button on the remote
control for ten seconds. Do this only after replacing the lamp.Step 6
Step 7,8
Step 9
MAINTENANCE 82
Lamp housing
LT100 LT81 
						

							83
Remote Control Battery Installation
1. Press firmly and slide the battery cover off.
2. Remove both old batteries and install new ones (AA). Ensure that you have the batteries polarity
(+/Ð) aligned correctly.
3. Slip the cover back over the batteries until it snaps into place.
MAINTENANCE 84
Operating Range
Range of 360û and a distance of 23 feet (7 m) from the remote sensor.
30˚
30˚
Operation distance
of 23 feet (7m) 
						

							Etape 3
Etape 4
Etape 585
Cette section dŽcrit les procŽdures simples dÕentretien que vous aurez ˆ
suivre pour remplacer la lampe et remplacer les piles de la tŽlŽcommande.
Remplacement de la lampe
Lorsque la lampe a ŽtŽ utilisŽe pendant 1000 heures ou plus, le voyant ÒStatusÓ (Žtat) du

1000 heures pour conserver une performance optimale de votre projecteur.
PRECAUTIO N
¥

chaude. Laissez-la refoidir pendant au moins une heure avant de la manipuler.
¥ NE RETIREZ AUCUNE VIS mis ˆ part la vis qui fixe le couvercle de lampe
et les deux vis du compartiment de lampe. Vous risquez de recevoir une
dŽcharge ŽlŽctrique.
¥ Mettez le projecteur hors circuit et dŽbranchez le cordon dÕalimentation.
Laissez refroidir la lampe pendant au moins une heure.
¥ 

1000 heures dÕutilisation, lÕampoule peut se briser et des brisures de verre

car elles peuvent vous blesser. Dans ce cas, contactez votre revendeur NEC
afin de procŽder au remplacement de la lampe.
Etape 6
Etape 7,8
Etape 9
MAINTENANCE 86
Pour remplacer la lampe :
1. Mettre lappareil sous tension et dŽbrancher le cordon dalimentation.
2. 
3. Desserrer le vis de fixation du couvercle de la lampe.
4.

ATTENTION : ne pas utiliser une autre lampe que la lampe de remplacement NEC.

5. Desserrer les trois vis du bo”tier de lampe.

une dŽcharge Žlectrique. Ne pas essayer de circonvenir ce mŽcanisme)
6. En maintenant la poignŽe, tirer le bo”tier de lampe vers lavant et lextraire.
7. Installer le nouveau bo”tier de lampe et le fixer avec les trois vis.
8. Serrer les trois vis du bo”tier de lampe.
9.
RŽinstaller le couvercle de la lampe dans sa position dorigine et le fixer avec les vis de
fixation.
10.Initialiser le temps de la lampe.
SŽlectionner le menu de temps dutilisation de la lampe, puis appuyer sur la touche ON
sur la tŽlŽcommande et la maintenir enfoncŽe pendant au moins dix secondes.
REMARQUE : 
touche ÒPower OffÓ (alimentation dŽsactivŽe)(et non ÒPower OnÓ (alimentation activŽe)) de la tŽlŽcommande
pendant dix secondes. Effectuez cette opŽration uniquement lorsque vous avez remplacŽ la lampe.
Bo”tier de
lampe
LT100 LT81
Couvercle de
la lampe 
						

							87
MAINTENANCE 88
Installation des piles de la tŽlŽcommande
1. Appuyez fermement et retirez le couvercle des piles en le faisant glisser.
2. Retirez les deux piles usagŽes et installez de nouvelles piles (AA). Assurez-vous de respecter la
polaritŽ (+/Ð) des piles.
3. Remettez le couvercle des piles en le faisant glisser, jusquÕˆ ce quÕil sÕembo”te.
PortŽe de fonctionnement

30˚
30˚
Operation distance of 7m 
						

							This section helps you resolve problems you may encounter while setting up or using your MultiSync LT81/LT100 Projector.
Status Light Messages
TROUBLESHOOTING 589
Status
mNormal
mThe projector lamp has exceeded 1000 hours of operation and should be replaced.
mThe lamp housing is not correctly installed. Install it correctly.
¥ The temperature protector has been triggered.  If the room temperature is high, move the projector
to a cooler location.  If the temperature inside the projector is high, check the cooling fan ventila-
tion hole and the ventilation hole on the bottom of the projector.  If any of the holes are blocked,
remove whatever is blocking them.
¥ The temperature protector has been triggered.  If you switch the main Power switch Off, then
immediately switch it On again, sometimes the power does not come on.  If this happens, wait one
minute, then switch the power On again. Condition
OFF
On Continually
Blinking very rapidly
(On and off in a cycle of 1 sec.)
Blinking rapidly
(On and off in a cycle of 4 sec.)
TROUBLE SHOOTING 90 Blinking Slowly
(On and off in a cycle of 8 sec.)
Blinking very slowly
(On and off in a cycle of 12 sec.)mThe cooling fan has stopped. Contact your NEC dealer for service.
mThe lamp is not turned on.
¥ The projector was turned off and back on too quickly. Turn off the projector, wait one
minute, then turn the projector back on. Or the lamp is burnt out. 
						

							Common Problems & Solutions
Problem
Does not turn on
No picture
Image isnÕt square
to the screen
Picture is blurredCheck These Items
¥ Check that the power cable is plugged in and that the power switch on the back panel is on.
¥ Ensure that the lamp cover and lamp housing are installed correctly. (See page 81.)
¥ Check the status light to see if the projector has overheated or the lamp usage exceeds 1100
hours.
¥
Use the menu icons to select your source (Video, S-Video, RGB or PC Card). (See pages 61 and 62.)
¥ Ensure your cables are connected properly.
¥ Use icons to adjust the brightness and contrast.
¥ Remove the lens cap.
¥ Is the POWER indicator blinking?
¥ Reset the settings or adjustments to factory preset levels using the RESET icon on the Settings
Menu.
¥ Reposition the projector to improve its angle to the screen.
¥ Adjust the focus. (See page 36.)
¥ Reposition the projector to improve its angle to the screen.
¥ Ensure that the distance between the projector and screen is within the adjustment range of the lens.
91
Problem
Image is scrolling
vertically, horizontally
or both
Remote control does
not work
Status indicator is lit or
blinking
Cross color in RGB
modeCheck These Items
¥ Use icons to select the source you want to input.
¥ If PC signal is set up in Custom Setting, select corresponding Custom Setting (Custom 1,
Custom 2, etc.).
¥ Install new batteries. (See page 83.)
¥ Make sure there are no obstacles between you and the projector.
¥ Stand within 23 feet (7m) of the projector.
See the Status Light message chart on pages 89 and 90.
If ÒAuto PictureÓ is off, turn it on. If ÒAuto PictureÓ is on, turn it off and balance the image with the
Picture Adjustment icon and Fine Picture Adjustment icon.
To Contact Your NEC Service Representative, Call 1-800-836-0655
TROUBLE SHOOTING 92 
						

							This section provides technical information about the MultiSync LT81/LT100 Projectors performance.
Optical
DMDTMSingle Chip Digital Micromirror Device(DMDTM), 8002600 dots (LT81) / 10242768 dots (LT100)
Lens Manual zoom, manual focus
F 2.44 f =26-30 mm
Lamp Metal halide lamp 280 W
Image Size 610-7620 mm (24-300 inches) diagonal
Projection Distance 1.2 Ð 12.3m
Electrical
Inputs Video (NTSC / PAL / SECAM / NTSC 4.43)
RGB LT81: (H : 15 Ð 60 kHz, V : 50 Ð 85 Hz)
 LT100: (H : 15 Ð 85 kHz, V : 50 Ð 85 Hz)
Video Bandwidth RGB: 60 MHz
Color Reproduction Full color, 16.7 million colors simultaneously.
Horizontal Resolution NTSC / YCbCr 550 (LT81 : 500), PAL 350, SECAM 350, NTSC4.43 350 TV lines
RGB LT81: 800 dots horizontal, 600 dots vertical
 LT100: 1024 dots horizontal, 768 dots vertical
Power Requirement 100 Ð 120 / 220 Ð 240 VAC, 50 / 60 Hz
Input Current 4.6 A (100 Ð 120 VAC) / 2.2 A (220 Ð 240 VAC)
SPECIFICATIONS 693
SPECIFICATIONS 94
Digital Light Proccessing, DLP, Digital Micromirror
Device and DMD are trademarks of Texas Instruments.
Mechanical
Dimensions (LT81)9.7  (W)25.1  (H)212.8 (D)  / 246 mm (W)2130 mm (H)2325 mm (D) (Including lens hood and feet)
9.7  (W)25.1  (H)212.7 (D)  / 246 mm (W)2130 mm (H)2310 mm (D) (Not including lens hood)
Dimensions (LT100)9.8  (W)25.6  (H)213.4 (D)  / 250 mm (W)2142 mm (H)2340 mm (D) (Including lens hood and feet)
9.8  (W)25.6  (H)212.6 (D)  / 250 mm (W)2142 mm (H)2320 mm (D) (Not including lens hood)
Net Weight LT81:   9.9 lbs / 4.5 kg
LT100: 10.8 lbs / 4.9 kg
Operational Temperatures Projector: 41° Ð 95°F (5° to 35°C), 30 Ð 85% humidity
Remote control: 32° Ð 140°F (0° to 60°C)
Remote mouse receiver: 32° Ð 140°F (0° to 60°C)
Regulations UL Approved (UL 1950, CSA 950)
Meets DOC Canada requirements
Meets FCC Class A requirements 
						

							Cabinet Dimensions (LT81)
95
Unit : inch (mm)
SPECIFICATIONS 96
12.2
(310)
9.3
(235)
3.4
(85.6)
0.6
(15)
0.9
(23)
MAX3.4
(85.6)
Lens Center0.4
(11)5.1
(129.6)
3.9
(98)0.7
(17)
3.4
(85.8)
Lens Center 
						

							Cabinet Dimensions (LT100)
97
Unit : inch (mm)
SPECIFICATIONS 98
12.6
(320)
5.2
(133)
3.8
(97) 0.2
(5)
MAX
0.79
(20)5.6
(142)
4.5
(114)0.53
(13.5)
3.3
(83.4)
9.8
(250)
Lens Center Lens Center