NEC Lt80 Projector Users Manual

							Provides access to Lamp Usage information and the Auto Start and Power Management fea-
tures. Use the ÒSelectÓ button on the projector cabinet or (s) (t) buttons on your remote
control to access a submenu. Then press ÒAdjustÓ (+) or (Ð) to choose a specific option.
Lamp Usage
This tells you how long the lamp has been in operation. It is recommended that you replace a
lamp after 1000 hours of service. After you install a new lamp, select this icon and press and
hold the ÒPower OnÓ button on the remote control for ten seconds to reset the lamp clock back
to zero.
NOTE: The projector will turn off and go into stand by mode after 1100 hours of service. If this
happens, press the Power Off button on the remote control for ten seconds to reset the lamp clock
back to zero. Do this only after replacing the lamp.
Auto Start
Turns the projector on automatically when the main power switch is turned on. This elimi-
nates the need to always use the ÒPowerÓ button on the remote control or projector cabinet.
Press (+) to turn this feature on and (Ð) to turn it off. Power Menu
59
Power Management
 When ÒPower OffÓ is on and there is no RGB video input for five minutes or more, the
projector will automatically turn itself off. Press the (+) to turn this feature on and (Ð) to turn
it off.  This feature does not work with Video or S-Video sources.
OPERATION60 
						

							Settings Menu
Enables you to set preferences and other operating options. Use the ÒSelectÓ button on the projector
cabinet or (s) (t) buttons on your remote control to access the submenu you want.
Custom Memory
 This enables you to save your current settings for an RGB source in one of five memories, Custom
1-5.
To change the STANDARD settings, proceed as follows:
1. Connect your computer to the MultSync LT80.
2. Select the STANDARD in RGB source.
3. Adjust the horizontal/vertical position, Picture, and Fine Picture adjustments.
4. Select the Custom Memory icon.
5. Press the Adjust (+) or (Ð) buttons to choose a memory location, then press Enter on the cabinet
or the Left Click on your remote control to save the new settings.
If you do not want to change the STANDARD settings, first selct the Custom Memory icon, then do
the same as step 5.
61
Projection
This reorients your image for your type of projection.  Press the ÒAdjustÓ (+) or (Ð) button until it is
correct. Press ÒEnterÓ on the cabinet or the ÒLeft ClickÓ on your remote control to save your change.
The options are: front floor projection, rear ceiling projection, rear floor projection, and front ceiling
projection.
Language
Use the ÒAdjustÓ (+) or (Ð) to choose one of six languages for on-screen instructions. Press ÒEnterÓ
on the cabinet or the ÒLeft ClickÓ on your remote control to save your change. The options are:
English, German, French, Italian, Spanish and Swedish.
Reset
Changes all adjustments to the factory preset levels for each source individually. To activate, you
must hold down the ÒAdjustÓ (+) button on the cabinet or remote control for at least two seconds.
The adjustments that will be reset are horizontal and vertical control, picture and fine picture adjust-
ment (for the current source only), brightness, contrast, color, tint, and sharpness.
When custom setting is selected, reset changes all adjustments to the factory preset levels of the
current input signal for selected custom memory location. This will not return to your previous
custom setting and will delete your saved settings from custom memory.
OPERATION62 
						

							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
63
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. Remove the lamp cover fastening screws.
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. Remove the three 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
fastening 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 .Step 6
Step 7,8
Step 9
MAINTENANCE64
Lamp housing 
						

							65
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.
MAINTENANCE66
Operating Range
Range of 30û up/ down/ left/ right and a distance of 7 meters from the remote sensor.
30û
30û
30û
30û30û
30û
30û
30û
30û in the horizontal
direction with the
front  remote sensor
in the center30û in the horizontal
direction with the
rear remote sensor
in the center
Operation distance of 7m Operation distance of 7m
30û in the vertical
direction with the
front  remote sensor
in the center30û in the vertical
direction with the
rear remote sensor
in the center 
						

							Etape 3
Etape 4
Etape 5
67
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
MAINTENANCE68
Pour remplacer la lampe :
1. Mettre lappareil sous tension et dŽbrancher le cordon dalimentation.
2. 
3. DŽposer les vis de fixation du couvercle de la lampe.
4. 
ATTENTION : ne pas utiliser une autre lampe que la lampe de remplacement NEC.

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

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 : 
appuyez sur la touche ÒPower OffÓ (alimentation dŽsactivŽe)(et non ÒPower OnÓ
(alimentation activŽe)) de la tŽlŽcommande pendant dix secondes .
Couvercle de
la lampe
Bo”tier de
lampe 
						

							69
MAINTENANCE70
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

le tŽlŽcommande.
30û
30û
30û
30û30û
30û
30û
30û30 degrŽs dans la
position horizontale
avec le capteur de
tŽlŽcommande avant
au centre.30 degrŽs dans la
position horizontale
avec le capteur de
tŽlŽcommande

Operation distance of 7m Operation distance of 7m
30 degrŽs dans la
position verticale avec
le capteur de
tŽlŽcommande avant
au centre.30 degrŽs dans la
position verticale
avec le capteur de
tŽlŽcommande
 
						

							This section helps you resolve problems you may encounter while setting up or using your MultiSync LT80 Projector.
Status Light Messages
TROUBLESHOOTING 571
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 SHOOTING72 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 cord 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 63.)
¥ 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 or RGB). (See pages 53 and 54.)
¥ 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 50.)
¥ 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.
73
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.
¥ Make sure the recalled Custom Memory supports the current input signal.
¥ Install new batteries. (See page 65.)
¥ 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 71 and 72.
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 SHOOTING74 
						

							This section provides technical information about the MultiSync LT80 Projectors performance.
Optical
DMDTM
Single Chip Digital Micromirror Device(DMDTM), 800´600 dots
Lens Manual zoom, manual focus
F 2.44 f =26-30 mm
Lamp Metal halide lamp 270 W
Image Size 610-7620 mm (24-300 inches) diagonal
Projection Distance 1.2 Ð 12.3m
Light Output 600 ANSI lumens ( normally white)
Contrast Ratio Greater than 200 : 1
Color Temperature 6000 Kelvin
SPECIFICATIONS 675
Electrical
Inputs Video (NTSC / PAL / SECAM / NTSC 4.43)
RGB (H : 15 Ð 60 kHz, V : 50 Ð 85 Hz)
Video Bandwidth 60 MHz
Color Reproduction Full color, 16.7 million colors simultaneously.
Horizontal Resolution NTSC 550, PAL 350, SECAM 350, NTSC4.43 350 TV lines
RGB 800 dots horizontal, 600 dots vertical
Power Requirement 100 Ð 120 / 220 Ð 240 VAC, 50 / 60 Hz
Input Current 6.25 A
Mechanical
Dimensions 9.8  (W)24.8  (H)212.8 (D)
24.8 cm (W)212.2 cm (H)232.5 cm (D)
Net Weight 9.9 lbs / 4.5 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
SPECIFICATIONS76
Digital Light Proccessing, DLP, Digital Micromirror
Device and DMD are trademarks of Texas Instruments. 
						

							Cabinet Dimensions
77
Unit : inch (mm)
SPECIFICATIONS78
PUSH ON/OFF
POWER
STANDBY
MENUSELECTENTER ADJUST
12.2
(310)0.59
(14.9)4.8
(121.6)
3.86
(98)0.67
(17)
9.25
(235)
PC CONTROL VIDEO INPUT
S-VIDEO
VIDEO L(MONO)––R-AUDIO
AUDIO
AUDIO RGB INPUT RGB OUTPUT
RGB RGB3.33
(84.5)
Lens center