NEC Lt81 Projector Users Manual

							Using The Menus
1. Press the Menu button on the remote control or projector cabinet to display the Main Menu.
2. Press the Select button on the projector cabinet or (s) (t) buttons on your remote control to highlight the menu for the item you want
to adjust.
3. Press the Enter button on the projector cabinet or the Left Click button on the remote control to select a submenu or item.
4. Adjust the level or turn the selected item on or off by using the Adjust (+) or (Ð) buttons on the remote control or cabinet. The on-screen
gauge will display your changes. The (+) button is on and (Ð) is off.
5. The change is stored until you adjust it again.
6. Repeat steps 2-5 to adjust an additional item, or press ÒRight-ClickÓ on your remote control to quit the menu display.59
OPERATION 60
VIDEO/ S-VIDEO RGBYCbCr
NOTE: The following explains conditions that you will encoun-
ter when operating your LT100 while displaying an SXGA
(128021024) image.
When a menu or message is displayed while an SXGA image is
projected, several lines of information will be lost.
When the LAMP USAGE 1000 HOURS message appears, sev-
eral lines of information will be lost.
The LAMP USAGE 1000 HOURS message will not appear
when the freeze button is activated.
SXGA images inherently display a 5 to 4 ratio, resulting in an
image that appears to be smaller and more square than the 4 to
3 format commonly displayed. 
						

							Enables you to select a video source such as a VCR, DVD player, laser disk player, compu-
ter or document camera depending on what is connected to your inputs. Press the Select
button on the projector cabinet or (s) (t) buttons on your remote control to highlight the
menu for the item you want to adjust.
Video
Selects device connected to your video input (VCR, document camera, laser disk player or
DVD player).
S-Video
Selects device connected to S-Video input (Laser disk player, S-VHS VCR or DVD player).
Menu Descriptions & Functions
Source Menu
61
RGB
Selects computer connected to your RGB input.  Use the Adjust (+) or (Ð) buttons to
select a standard* or one of five custom settings you can create and store. Press the Enter
button on the cabinet or the Left Click button on the remote control to save your selection.
NOTE: If a previously saved custom memory location is used with a new or different input signal
it may not sync up, producing a distorted image, or no image at all. If so, follow the instructions
below:
 1) Disconnect the signal cable so that there is no input signal. In this condition the on-screen
message will be displayed.
2) Select RGB standard from the source menu.
3) Connect the signal cable again.
NOTE: * Standard is normally used and it can be user changed and automatically recalled.
PC CARD
This feature enables you to make a presentation using the Viewer function with the optional
LT Viewer board (VK-LT81 for LT81 / VK-LT for LT100) installed.
Press the Mouse pad (+) or (-) buttons to select START for the image you want to display
first and SELECT FILE for the file you want to select or Select Slide for the image you
want to slide.
OPERATION 62 
						

							Image Adjustment Menu
63
OPERATION 64 Provides access to controls for your image and sound. Use the ÒSelectÓ button on the projector cabinet or (s)
(t) buttons on your remote control to highlight the menu for the item you want to adjust.
The volume, image mode, brightness, contrast, color, tint, sharpness and white balance controls are available for
Video or S-Video sources.
The volume, image mode, brightness, contrast, horizontal position, vertical position, white balance, alignment
and auto picture controls are available for RGB source.
Volume
Use the ÒAdjustÓ (+) or (Ð) buttons to adjust the volume.
Image Mode
Use the Select button on the projector cabinet or (s) (t) buttons on your remote control to select the item you
want to adjust.
NOTE: Input and Display modes are not available for PC CARD.
Gamma ............. Use the mouse pad (+) or (Ð) buttons to choose Normal when in a lighted room and Natural
1&2 when in a darkened room. Natural 1 for better flesh tone; Natural 2 for true repro-
duction of middle tones.
Input Mode ....... Use the mouse pad (+) or (Ð) buttons to choose DOC CAM for a document camera or other
low APL input, Standard Video for a regular video picture such as NTSC, RGB Signal for
an RGB source such as a computer, or Y/Cb/Cr Signal for a component video source such as
a DVD player.
Display Mode ... Use the mouse pad (+) or (Ð) buttons to choose Normal Aspect for normal video picture with
a 4-to-3 aspect ratio and Wide Aspect for DVDs with a 16-to-9 aspect ratio.
NOTE:
1) Flicker may appear on a freeze-frame picture with a Video or S-Video source. If this happens, select the
Document Camera mode using the Image mode icon on the Image Adjustment Menu, and then adjust the
contrast and other items for an optimal image.
2) A frame may freeze for a brief period of time when a video is played back in fast-forward or fast-rewind with
a Video or S-Video source. If this happens, select the Natural mode (for cinema) using the Image Mode icon
on the Image Adjustment Menu. 
						

							65
OPERATION 66
Brightness
Use the ÒAdjustÓ (+) or (Ð) buttons to adjust the brightness.
Contrast
Use the ÒAdjustÓ (+) or (Ð) buttons to adjust the contrast.
Color*
 Use the ÒAdjustÓ (+) or (Ð) buttons to adjust the color.
Tint*
Use the ÒAdjustÓ (+) or (Ð) buttons to adjust the tint.
Sharpness*
Use the ÒAdjustÓ (+) or (Ð) buttons to adjust the sharpness.
White Balance
Use the Mouse pad (+) or (Ð) buttons to adjust the white balance.
For Video/RGB ... Brightness for each color (RGB) is used to adjust the black level of the screen; Contrast for each
color (RGB) to adjust the white level of the screen.
For Y/Cb/Cr ........ Brightness for each color (Y/Cb/Cr) is used to adjust the white level of the screen; Contrast for
each color (Y/Cb/Cr) to adjust the black level of the screen.
Alignment
Use the Mouse pad (+) or (Ð) buttons to adjust the horizontal and vertical position, Picture, and Fine Picture.
Horizontal
   Position
.......... Use the ÒAdjustÓ (+) button to move the image right; (Ð) to move it left.
Vertical
   Position
.......... Use the ÒAdjustÓ (+) button to move the image up; (Ð) to move it down.
Auto Picture..
Use the ÒAdjustÓ (+) button to turn this feature on so ÒPictureÓ and ÒFine PictureÓ adjustments are made automati-
cally. Use the ÒAdjustÓ (Ð) button to turn this feature off so you can make ÒPicture and Fine PictureÓ adjustments
manually.
Picture Adjustment 
..(when AUTO PICTURE is off)
Use this icon with the ÒFine Picture AdjustmentÓ to fine tune the computer image or to remove any vertical banding that might
appear. This function adjusts the clock frequencies to eliminate the vertical banding in the image. Press the ÒAdjustÓ (+) and (Ð)
buttons until the banding disappears. This adjustment may be necessary when you connect your computer for the first time. This
adjustment is made automatically when the Auto Picture is turned on.
Fine Picture ..(when AUTO PICTURE is off)
Use this icon to adjust the clock phase or to reduce video noise, dot interference or cross talk. (This is evident when
part of your image appears to be shimmering.) Use the ÒAdjustÓ (+) and (Ð) buttons to adjust the image. Use the Fine
Adjustment only after the Picture Adjustment is complete. This adjustment is made automatically when the Auto
Picture is turned on.
NOTE:
,Color, Tint, and Sharpness controls will not work with an RGB source. The Tint control will not work with a PAL
or SECAM source. The Color and Tint controls will work with a Y/Cb/Cr source.
,,Alignment controls such as Horizontal and Vertical position controls, and Picture, Fine Picture and Auto Picture
adjustments will not work with a Video or S-Video source.
RGB AUTO PICTURE ON
RGB AUTO PICTURE OFF 
						

							Provides access to Lamp Usage information, the Auto Start, Power Management and On-
screen Mute features. 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
67
Power Management
When ÒPower OffÓ is on and there is no 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.
On Screen Mute
Use the mouse pad (+) button to turn off the On Screen Mute ; (Ð) to restore it.
The On screen Mute feature keeps the menu from displaying when the projector is turned
on or when switching inputs.
OPERATION 68 
						

							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 LT81/LT100.
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.
Capture (with the optional viewer board installed only)
When the Capture is selected, press Enter on the projector cabinet or Left Click button on the remote control
to display Execute and capture an image from a source that is currently being displayed.
When capturing is completed, Completed is displayed under the Capture icon.
Unless a flash memory card is inserted into the slot of the viewer board, No Card is displayed. This means that
the Capture feature is not available. The Card Error display means that the free space of the flash memory card
is insufficient for saving images. Make more space available on the card by erasing unwanted images with your
PC. The number of images that can be captured depends on the size of the flash memory card.
69
OPERATION 70
NOTE: Be sure not to turn off the power or remove the flash memory card unless Completed is displayed. Doing so
could cause a loss of the data in the flash memory card  or damage to the card itself.
Background
Use this feature to display a black, blue screen or focus pattern when no signal is available. Press the mouse pad (+) or (-) buttons to
choose the back screen you want. Press Enter on the cabinet or the Left Click on your remote control to save your change.
Projection
This reorients your image based upon projector location.  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 adjustment (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. 
						

							71
OPERATION 72
Using the Viewer function
If you use the Viewer function on the projector, you must first install the
optional LT Viewer board (VK-LT or VK-LT81) in the projector and set
up the exclusive software included with the VK-LT or VK-LT81 kit.
See the users manual included with the Viewer board for installing
and uninstalling the software.
Mounting the Optional LT81 Viewer Board (VK-LT81)
Before mounting the viewer board, you must first switch off the
main power and unplug the power cable.
To install the Viewer board:
1. Remove the board cover using a flat-head screwdriver.
MEMU
SELECT-+ENTER
ON / OFF
2. Put the board in place and secure it with the four screws supplied
with the VK-LT81 board.
MEMU
SELECT-+ENTER
STATUS
POWER ON / OFF
3. Align the catches of the supplied viewer board cover with the holes. 4. Push down the viewer board cover.
MEMU
SELECT-+ENTER
STATUS
POWER ON /  OFF
MEMU
SELECT-+ENTER
STATUS
POWER ON / OFF
Connector
Catch 
						

							2. Remove the screw from the board cover.
3. Put the board in place and secure it with the four screws supplied
with the VK-LT board.4. Attach the two foot caps to adjust projector height. After complet-
ing, put the projector back in the original position.
73
OPERATION 74 Mounting the Optional LT100 Viewer Board (VK-LT)
Before mounting the viewer board, you must first switch off the
main power and unplug the power cable.
To install the VK-LT Viewer board:
1. Turn the projector so that the bottom is up. 
						

							Projecting Slides
Orientation of flash memory card and CompactFlashª (CFª)
memory card insertion.
The flash memory card has a front and a back side and the flash/CF
memory card is designed to be inserted in only one orientation. The
card is designed so that it cannot be inserted in reverse. Trying to
force the card into slot may result in damage to the card and the card
slot. See the flash/CF memory card manual for information about the
orientation of the flash/CF memory card.
4. Select a file or a slide.
Use the mouse pad (+) or (Ð) button on the remote control to
select the file or slide you want to display and press the Enter
button on the cabinet or the Left Click button on the remote con-
trol. See the following pages for more details. * The type of flash/CF memory card required for use in the projector
is a Type II PCMCIA-ATA flash memory card for LT100 and CF
card for LT81. Never use a different type of card, doing so may
result in damage to the card or PC card slot.To Project the Slides (the presentation materials)
1. Insert a flash/CF memory card into the PC card slot.
* To eject the flash memory card, press the Eject button.
NOTE: Should the card be difficult to insert, do not forcefully
push the card in.
2. Select the PC card as a source.
* Press the Menu button on the remote control or projector cabi-
net and select PC CARD from the Source menu.
* If there is no flash/CF memory card in the card slot, the projec-
tor displays a blue back or black back image.
3. Select Select File or Select Slide.
* Use the mouse pad (+) or (-) button on the remote control to
select Select File or Select Slide.
* The selected file or slide will be displayed.
NOTE: If you select Start and press the Enter button on the
cabinet or the Left Click button on the remote control, the slides
will be looped. To use the Start feature, you must first set on the
software included with the LT Viewer board.
8 7
564 3
12
File
File FileFile
File
File FileFile
Multi Cursor
NOTE: The mouse pad (+) or (Ð) button is valid only when the
Menu button is lit.
H G
EFD C
AB
presentation
presentation presentationpresentation
presentation
presentation presentationpresentation
Table Cursor
75
OPERATION 76
LT100LT81
CompactFlash and CF are trademarks of SanDisk Corporation. 
						

							Selecting a File from a List of Files
* The Viewer feature allows you to store one or more presentation
materials in a single flash/CF memory card. Each material is referred
to as a file or slide.
To select a file from a list of files
1. Press the Menu button on the remote control or cabinet to select
PC Card.
H G
EFD C
AB
presentation
presentation presentationpresentation
presentation
presentation presentationpresentation
Table Cursor
8 7
564 3
12
File
File FileFile
File
File FileFileMulti Cursor
2. Use the mouse pad (+) or (-) button on the remote control to se-
lect Select File and press the Enter button on the cabinet or
the Left Click button on the remote control.
3. Use the mouse pad (+) or (Ð) button on the remote control to
move the Multi-Cursor (blue box) to the file you want to dis-
play a slide from, and press the Enter button on the cabinet or
the Left Click button on the remote control.
* This will display the first slide of the selected file.
NOTE: A maximum of 16 indexes can be switched with Select
File. The last displayed file, which is always exclusively for use
of Capture, will be displayed during capturing only.
When 17 or more indexes exist in the flash/CF memory card and
you wish to display them, move the index to be displayed to the
beginning of the file indexes with Editing  file indexes under
Files of the software for Viewer.
Selecting a Slide from a List of Slides (Table)
To select a slide from a list of slides
1. Press the Menu button on the remote control or cabinet to select
PC Card.
2. Use the mouse pad (+) or (-) button on the remote control to select
Select Slide and press the Enter button on the cabinet or the
Left Click button on the remote control.
3. Use the mouse pad (+) or (Ð) button on the remote control to
move the Table-Cursor (yellow box) to the slide you want to
display and press the Enter button on the cabinet or the Left
Click button on the remote control.
* This will display the selected slide.
NOTE: The Slide (+) and (Ð) button on the remote control
can be also used to select a file or slide, or to turn pages.77
OPERATION 78