NEC Projector Vt46 User Manual

							E-21
Menu Descriptions & Functions
Picture
User Adjust (when using User )When selecting user adjustable presetting (User), the submenu will
be displayed.
You can customize each gamma or color. To do so, first select “User”
and press the ENTER button, and then proceed the following steps.
Selecting Base Setting  This feature allows you to use white balance or gamma values as
reference data to optimize for various types of images. You can se-
lect one of the following five settings.
• Presentation
• Video
• Movie
• Graphic
• sRGB
Adjusting White Balance  This allows you to adjust the white balance. 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.
Selecting Gamma Correction Mode  Each mode is recommended for :
Dynamic ......... For true color reproduction of natural tones
Black Detail .... For dark portions of a picture
Natural ........... Normal settings
Image
Adjusting Brightness, Contrast, Sharpness, Color, Hue and Picture
Management.
Brightness ...... Adjusts the brightness level or the back raster inten- sity.
Contrast ......... Adjusts the intensity of the image according to the incoming signal.
Sharpness ..... Controls the detail of the image for Video.
Color .............. Increases or decreases  the color saturation level (not
valid for RGB).
Hue ................ Varies the color level from +/- green to +/-blue. The red level is used as reference. This adjustment is only
valid for Video and Component inputs (not valid for
RGB).
Picture Management
This option allows you to adjust neutral tint for yellow, cyan or ma-
genta.
There are 5 factory presets optimized for various types of images, or
you can set user adjustable settings.
Presentation .. Recommended for making a presentation using a
PowerPoint file
V ideo ............. Recommended for regular picture such as TV pro-
gram
Movie ............. Recommended for movie
Graphic .......... Recommended for graphics
sRGB ............. Standard color values
User ............... User adjustable
NOTE:  When “sRGB”, “Graphic”, “Video” or “Movie” is se\
lected, the bright-
ness decreases slightly when compared to “Presentation”. This is n\
ot a mal-
function.
Correcting Vertical Keystone Distortion [Keystone] This feature corrects the keystone (trapezoidal) distortion to make
the top of the screen longer or shorter to be the same as the bottom.
Use the  F or  E buttons on the slide bar to correct the keystone (trap-
ezoidal) distortion.
NOTE:  The keystone angle can be corrected between 30 degrees upward and 30
degrees downward at a 0 degree-projection angle. Depending on the type o\
f graphics being used, the picture may get blurred or keystone correction \
may notbe possible when excessive keystone correction is used. The idea is, the\
 closer
you are to native resolution, the better image you will see.
Saving Vertical Keystone Correction [Keystone Save] This option enables you to save your current keystone settings.
Saving your change once affects all sources. The changes are saved
when the projector is off. 
						

							E-22
Selecting Aspect Ratio [ Aspect Ratio]Aspect Ratio allows you to select the best Aspect mode to display
your source image. You can also display the Aspect Ratio window by
pressing the “ASPECT” button on the remote control. (See page E-8).
When 4:3 is selected from the source (i.e. DVD player), the following
selections will display: Selecting Menu Language [Language]
You can choose one of 19 languages for on-screen instructions.
The options are: English, German, French, Italian, Spanish, Swed-
ish, Japanese, Korean, the Simplified Chinese, Polish, Hungarian,
Russian, Greek, Turkish, Dutch, Norwegian, Finnish, Portuguese and
Czech.
Selecting Menu Color [Menu Color Select] You can choose between two color modes for menu color: color and
monochrome.
Selecting Menu Display Time [Menu Display Time] This option allows you to select how long the projector waits after the
last touch of a button to turn off the menu.
The preset choices are “Manual”, “Auto 5 sec”, “Auto 15 s\
ec”, and
“Auto 45 sec”. The “Auto 45 sec” is the factory preset.
Selecting a Color or Logo for Background [Background] Use this feature to display a black/ blue screen or logo when no sig-
nal is available.
Selecting Projector Orientation [Orientation] This sets your image for your type of projection. The options are:
desktop front projection, ceiling rear projection, desktop rear projec-
tion, and ceiling front projection.
NOTE:  Selecting “Ceiling front” or “Ceiling rear” will turn on th\
e Auto Adjustfeature to optimize an RGB image automatically. (See page E-24)
Advanced
Security
A keyword can be set for your projector to avoid operation by an unau-
thorized user using the Menu. When a keyword is set, turning on the
projector will display the Keyword input screen. Unless the correct key-\
word is entered, the projector cannot project an image.
To enable the Security function:
1. Select [Advanced]  →  [Security] and press the  F button to select “On”.
Normal Wide Zoom Cinema Native
Standard
4:3 Aspect Left and right
stretched Left and right
stretched
When 16:9 is selected from the source (i.e. DVD player), the follow-
ing selections will display: Normal Wide Zoom Cinema Native
Native (RGB only): Turns off the Advanced AccuBlend feature. The
projector displays the current image in its true resolution.
NOTE: * While you are displaying an image with higher resolution than the projector’s
native resolution, “Native” is not available.
*Y ou can adjust image positions for Cinema. See “Cinema Position” fo\
r set-
ting image positions.
Copyright Please note that using this projector for the purpose of commercial gain orthe attraction of public attention in a venue such as a coffee shop or h\
otel andemploying compression or expansion of the screen image with a AspectRatio setting may raise concern about the infringement of copyrights wh\
ich
are protected by copyright law.
Adjusting the Vertical Position of Image [Cinema Position] (for Cin-
ema only) This feature adjusts the vertical position of the image when viewing
video with an aspect ratio selected.
When “Cinema” is selected in “Aspect Ratio”, the image is di\
splayed
with black borders on the top and bottom.
You can adjust the vertical position between top and bottom.
NOTE:  This option is available only when “Cinema” is selected in Aspect \
Ra-tio.
Setup
16:9 image
displayed in 4:3 mode Left and right
stretched Left and right
stretched to
display the true aspect
The [Keyword] screen will be displayed. 
						

							E-23
2. Type in a combination of the four SELECT buttons ( GHFE ) and
press the ENTER button.
NOTE:  A keyword must be four to 10 digits in length.
4. Select “Yes” and press the ENTER button.
The Security function has been enabled.
To  disable the Security function:
1. Select [Advanced]  →  [Security] and press the  E button to select “Off”.
NOTE:  If you forget your keyword, contact your dealer. Your dealer will pro-
vide you with your keyword in exchange for your request code. Your request code is displayed in the Keyword Confirmation screen. In this example “\
K992-
45L8-JNGJ-4XU9-1YAT-EEA2” is a request code.
Disabling the Cabinet Buttons [Control Panel Key Lock] This option turns on or off the Control Panel Key Lock function.
NOTE:* This Control Panel Key Lock does not affect the remote control and the P\
C
Control functions.
* When the cabinet buttons are disabled, pressing and holding the CANCEL
button for about 10 seconds will change the setting to enable.
* Key symbol  indicates the Control Panel Key Lock is enabled.
Enabling High Speed Fan Mode [High Speed Fan Mode]
This option allows you to select two modes for fan speed: high-speed
mode and normal speed mode.
When you wish to cool down the temperature inside the projector
quickly, select “On”.
NOTE:  Enable High Speed Fan mode if you continue to use the projector forconsecutive days.
Selecting Signal Format [Signal Select]

Allows you to choose “RGB” for an RGB source such as a computer,
or “Component” for a component video source such as a DVD player.
Normally select “RGB/Component” and the projector automatically
detects a component signal. However there may be some compo-
nent signals that the projector is unable to detect. If this is the case\
,
select “Component”. Select “Scart” for the European Scart.

This feature enables you to select composite video standards manu-
ally. Normally select “Auto”.
When you select the video standard for Video and S-Video, select
the video standard from the pull-down menu.
This must be done for Video and S-Video respectively.
Page2
The [Confirm Keyword] screen will be displayed.
3. Type in the same combination of SELECT buttons (  GHFE) and
press the ENTER button.
The confirmation screen will be displayed.
T he Keyword confirmation screen will be displayed.
2. Type in your keyword and press the ENTER button.
When the correct keyword is entered, the Security function will be
disabled.
When the Security function is enabled and the projector is turned
on, the projector will display a blue background.
To  display an image at this time, press the MENU button to display the
Keyword input screen.
T ype in the correct keyword. The projector will display an image. Enabling Power Management [Power Management]
When this option is on and there is no input for five minutes or more,
the projector will automatically turn itself off.
Selecting Noise Reduction Level [Noise Reduction] Select one of the three levels for reducing video noise: Off, Low, or
High.
NOTE:  The lower the Noise Reduction level, the better the image quality byway of higher video bandwidth. 
						

							E-24
Default
Returning to Factory Default [Factory Default]
The Factory Default feature allows you to change adjustments and set-
ting to the factory preset for source except the following:

Resets the adjustments for the current signal to the factory preset lev-\
els.
The items that can be reset are: Brightness, Contrast, Color, Hue, Sharp-
ness, Aspect Ratio, Horizontal Position, Vertical Position, Clock, Phase
and Picture Management.

Reset all the adjustments and settings for all the signals to the factor\
y
preset.
The items can be reset except Language, Lamp Remaining Time, Lamp
Hour Meter and Filter Usage. To reset the lamp usage time, see “Clear
Lamp Hour Meter” and “Clear Filter Usage”.
Resetting the Filter Usage Hours [Clear Filter Usage]
Resets the filter usage back to zero. Selecting this option displays
submenu for a confirmation.
Clearing Lamp Hour Meter [Clear Lamp Hour Meter]
Resets the lamp clock back to zero. Selecting this option displays
submenu for a confirmation.
NOTE: The projector will turn off and go into standby mode after 3100 hours of\
service. If this happens, press and hold the ON/STAND BY and CANCEL buttons on the remote control simultaneously for a minimum of 10 seconds to rese\
t the
lamp clock back to zero. Do this only after replacing the lamp.
[Page 1]
Source Index
Horizontal Frequency
V ertical Frequency
Sync Polarity
[Page 2]
Signal Type
V ideo Type
Sync Type
Interlace [Page 3]
Remaining Lamp Time (%)*
Lamp Hour Meter (H)
Filter Usage
Projector Usage
*
The progress indicator shows the percent-
age of remaining bulb life. The value in-
forms you of the amount of lamp usage.
When the remaining lamp time reaches 0,
the Remaining Lamp Time bar indicator
changes from 0% to 100 Hours and starts
counting down.
If the remaining lamp time reaches 0 hours,
the projector will not turn on.
Enabling Auto Adjust [Auto Adjust]
When “Auto Adjust” is set to “On”, the projector automatically deter-
mines the best resolution for the current RGB input signal to project
an image using NEC’s Advanced AccuBlend Intelligent Pixel Blend-
ing Technology.
The image can be automatically adjusted for position and stability;
“Horizontal Position”, “Vertical Position”, “Clock” and “Phase”.
On .................. Automatically adjusts image “Horizontal Position”,
“Vertical Position”, “Clock” and “Phase”.
Off .................. User can adjust the image display functions (“Hori- zontal Position”, “Vertical Position”, “Clock” and
“Phase”) manually.
NOTE: Selecting “Ceiling front” or “Ceiling rear” for “Orientat\
ion” will auto-matically turn on this feature.
Adjusting Position/Clock (when Auto Adjust is off)
This allows you to manually adjust the image horizontally and verti-
cally, and adjust Clock and Phase.

Adjusts the image location horizontally and vertically.
This adjustment is made automatically when the Auto Adjust is turned
on.

Use this item with the “Auto Adjust off” to fine tune the computer
image or to remove any vertical banding that might appear. This func-
tion adjusts the clock frequencies that eliminate the horizontal band-
ing in the image. This adjustment may be necessary when you con-
nect your computer for the first time. This adjustment is made auto-
matically when the Auto Adjust is turned on.

Use this item 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 “Phase” only after the “Clock” is complete.
This adjustment is made automatically when the Auto Adjust is turned
on.
Selecting Communication Speed [Communication Speed]
This feature sets the baud rate of the PC Control port (DIN 8 Pin). It\
supports data rates from 4800 to 19200 bps.
The default is 19200 bps.
Select the appropriate baud rate for your equipment to be connected
(depending on the equipment, a lower baud rate may be recommended
for long cable runs).
Information
Displays the status of the current signal and lamp usage. This item has
three pages. The information included is as follows: 
						

							E-25
MAINTENANCE
This section describes the simple maintenance procedures you should
follow to replace the lamp and clean the filter.
Replacing the LampAfter your lamp has been operating for 3000 hours or longer, the LAMP
indicator in the cabinet will blink red and the message will appear. Even
though the lamp may still be working, replace it at 3000 hours to main-
tain optimal projector performance.
CAUTION
•DO NOT TOUCH THE LAMP immediately after it has been used.
It will be extremely hot. Turn the projector off, wait 60 seconds,
turn off the main power switch and then disconnect the power
cable. Allow at least one hour for the lamp to cool before han-
dling.
• DO NOT REMOVE ANY SCREWS except the lamp cover screw
and two lamp case screws. You could receive an electric shock.
• The projector will turn off and go into stand by mode after 3100
hours of service. If this happens, be sure to replace the lamp. If
you continue to use the lamp after 3000 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 replace-
ment.
To replace the lamp:
1. Loosen the lamp cover screw until the screwdriver goes into a free-
wheeling condition and remove the lamp cover. The lamp cover screwis not removable. 3. Insert a new lamp housing until the lamp housing is plugged into the
socket.
CAUTION
Do not use a lamp other than the NEC replacement lamp (VT60LP).
Order this from your NEC dealer.
Secure it in place with the two screws.Be sure to tighten the screws.
4. Reattach the lamp cover.Tighten the lamp cover screw.
Be sure to tighten the screw.
2. Loosen the two screws securing the lamp housing until the screw-
driver goes into a freewheeling condition. The two screws are notremovable.
Remove the lamp housing by holding it.
NOTE:  There is an interlock on this case to prevent the risk of electrical sho\
ck.Do not attempt to circumvent this interlock.
Catch
Catch
Interlock 5. After you install a new lamp, select the menu 
→ 
[Default] → [Clear
Lamp Hour Meter] to reset the lamp usage hours.
NOTE:  When the lamp exceeds 3100 hours of service, the projector cannot
turn on and the menu is not displayed. If this happens, press and hold t\
he ON/STAND BY and CANCEL buttons on the remote control simultaneouslyfor a minimum of 10 seconds while in standby mode. When the lamp time
clock is reset to zero, the LAMP indicator goes out. 
						

							E-26
Cleaning the Cabinet and the Lens
Cleaning
Cleaning or Replacing the Filter
The air-filter sponge keeps the inside of the projector from dust or dir\
t
and should be cleaned after every 100 hours of operation (more often in\
dusty conditions). If the filter is dirty or clogged, your projector ma\
y over-
heat.
CAUTION
•Turn off the projector, turn off the main power switch and un-
plug the projector before replacing the filter.
• Only clean the outside of the filter cover with a vacuum cleaner.
• Do not attempt to operate the projector without the filter cover.
To  clean the air-filter:
V acuum the filter-through the filter cover.
Catch
To  reset the filter usage time, from the menu, select [Default]  → [Clear
Filter Usage].
See also page E-24 for resetting the filter usage time.
To  replace the filter (sponge):
1. Remove the filter cover by pushing up on the catch of the cover until
you feel it detach.
2. Gently peel off the filter (sponge) and replace it with the new one. 3. Reinstall the new filter cover.
NOTE: 
Do not wash the filter with soap and water. Soap and water will damage
the filter membrane. Before replacing the filter, remove dust and dirt from the
projector cabinet. Keep out dust and dirt during filter replacement.
NOTE:  When you replace the lamp, it is also wise to replace the filter. The filtercomes in the same package with your replacement lamp.
1. Turn off 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 suchas alcohol or thinner.
3. Use a blower or lens paper to clean the lens, and be careful not to scratch or mar the lens. 
						

							E-27
TROUBLESHOOTING
This section helps you resolve problems you may encounter while setting \
up or using the projector.
Power IndicatorIndicator Condition Projector Condition Note
Off
Blinking light
Steady light Green
Orange
0.5 sec On,
0.5 sec Off
0.5 sec On,
0.5 sec OffThe main power is off.
The projector is getting ready
to turn on.
The projector is cooling down.
The projector is turned on.
The projector is in Standby.
Green
Orange –
W
ait for a moment.
W ait for a moment.
–
–
Indicator Condition Projector Condition Note
Off
Blinking light
Steady light Red
Green
Orange 1 cycle (0.5 sec On,
2.5 sec Off)
2 cycle (0.5 sec On, 0.5 sec Off)
4 cycle (0.5 sec On, 0.5 sec Off)
6 cycle (0.5 sec On, 0.5 sec Off) Normal
Lamp cover error or lamp
housing error
T
emperature error
Fan error
Lamp error
Re-firing the lamp
Control Panel key locked –
Replace the lamp cover or
lamp housing correctly.
The projector is overheated.
Move the projector to a cooler
location.
Fans will not work correctly.
Lamp fails to light. Wait a full
minute and then turn on again.
The projector is re-firing.
Y
ou have pressed control
panel key when Control Panel
Key Lock is enabled.
Status Indicator
Indicator Condition Projector Condition Note
Off
Blinking light
Steady light Normal
Lamp has reached its end of
life. Lamp replacement mes-
sage will be displayed.
Lamp has been used beyond
its limit. The projector will not
turn on until the lamp is re-
placed.
Red
Red
–
Replace the lamp.
Replace the lamp.
Lamp Indicator 
						

							E-28
Does not turn on
No picture
Image isn’t square to the
screen
Picture is blurred
Image is scrolling verti-
cally, horizontally or
both
Remote control does
not work
Indicator is lit or blink-
ing
Cross color in RGB
mode•
Check that the power cable is plugged in and that the power button on th\
e projector cabinet or the remote
control is on. See pages E-14 and 15.
• Ensure that the lamp cover or lamp housing is installed correctly. See page E-25.
• Check to see if the projector has overheated or the lamp has reached the\
 end of its usable life. If there is
insufficient ventilation around the projector or if the room where you’\
re presenting is particularly warm, move
the projector to a cooler location.
• Use the RGB, VIDEO or S-VIDEO button on the cabinet or the SOURCE button\
 on the remote control to select
your source (RGB, Video or S-Video).  See page E-15.
• Ensure your cables are connected properly.
• Use menus to adjust the brightness and contrast. See page E-21.
• Remove the lens cap.
• Reset the settings or adjustments to factory preset levels using “Factory Default” in the menu. See page E-24.
• Reposition the projector to improve its angle to the screen. See page E-\
16.
• Use the Keystone correction function to correct the trapezoid distortion\
. See page E-21.
• Adjust the focus. See page E-16.
• Reposition the projector to improve its angle to the screen. See page E-\
16.
• Ensure that the distance between the projector and screen is within the \
adjustment range of the lens. See
pages E-10 and 11.
• Condensation may form on the lens if the projector is cold, brought into\
 a warm place and is then turned on.
Should this happen, let the projector stand until there is no condensati\
on on the lens.
• Use the RGB, VIDEO or S-VIDEO button on the cabinet or the SOURCE button\
 on the remote control to select
your source (RGB, Video or S-Video).  See page E-15.
• Install new battery. See page E-9.
• Make sure there are no obstacles between you and the projector.
• Stand within 22 feet (7 m) of the projector. See page E-9.
• See the Power/Status/Lamp Indicator on page E-27.
• If Auto Adjust is off, turn it on or adjust the image manually with Horizontal / Vertical / Clock / Phase in the
Advanced menu. See page E-24.
Problem Check  These Items
Common Problems & Solutions 
						

							E-29
SPECIFICATIONS
This section provides technical information about the VT46 Projectors p\
erformance.
Model Number VT46
Optical
LCD Panel 0.7 p-Si TFT active-matrix
Resolution 800
600 pixels* native, up to UXGA with Advanced AccuBlend
Lens Manual zoom and focus: F1.7 - 2.0    f=21.6 - 25.9mm
Lamp 160 W
Image Size 21 - 300 inches (0.5 - 7.6 m) diagonal
Projection Distance 2.38 - 35.8 ft / 7.3 (Tele) - 10.9 m (Tele)
Projection Angle Tele : 9.5 ° - 10.0 ° Wide : 11.3 ° - 11.8 °
Keystone Correction +/- 30 degrees electronic
Electrical
Inputs 1 RGB/Component (D-Sub 15 Pin), 1 S-Video (DIN 4 Pin), 1 Video (RCA), 1 Stereo Mini Audio, 2 (L/R) RCA Audio, 1 PC Control (DIN 8 Pin)
V ideo Compatibility NTSC, NTSC4.43, PAL, PAL-60, PAL-N, PAL-M, SECAM, HDTV: 1080i, 1080i/50Hz, 720p, 576p, 480p, 480i/
60Hz
Scan Rate Horizontal: 15 kHz to 100 kHz (RGB: 24 kHz or over) / Vertical: 50 Hz to 120 Hz
V ideo Bandwidth RGB: 80 MHz (-3dB)
Color Reproduction 16.7 million colors simultaneously, Full color
Horizontal Resolution NTSC / NTSC4.43/PAL/PAL-M/PAL-N/PAL60: 550 TV lines
SECAM: 350 TV lines
YCbCr: 800 TV lines
RGB: 800 dots (H)
600 dots (V)
External Control RS232, IR
Sync Compatibility Separate Sync / Composite Sync / Sync on G
Built-in Speaker 1W (monaural)
Power Requirement 100 - 120V AC / 200 - 240V AC, 50 / 60 Hz
Input Current 2.3A (100 - 120V AC) / 1.1A (200 - 240V AC)
Power Consumption 220W (7.5W in Standby mode)
Mechanical
Installation Orientation Desktop/Front, Desktop/Rear, Ceiling/Front, Ceiling/Rear
Dimensions 12.2 (W) 
3.5 (H) 
9.1 (D)
310mm (W) 
89mm (H) 
230mm (D)
(not including protrusions)
Net Weight 6.5 lbs / 2.9 kg
Environmental Considerations Operational Temperatures : 32° to 95 °F (0 ° to 35 °C), 20% to 80% humidity (non-condensing)
Storage Temperatures : 14 ° to 122 °F (-10 ° to 50 °C), 20% to 80% humidity (non-condensing)
Regulations UL Approved (UL 60950, CSA 60950) Meets DOC Canada Class B requirements
Meets FCC Class B requirements
Meets AS/NZS3548 Class B
Meets EMC Directive (EN55022:1998, EN55024-1998, EN61000-3-2, EN61000-3\
-3)
Meets Low Voltage Directive (EN60950, TUV GS Approved)
For additional information visit:US : http://www.necvisualsystems.com
Europe : http://www.nec-europe.com/
Global : http://www.nec-pj.com/
*Effective pixels are more than 99.99%.
The specifications are subject to change without notice. 
						

							E-30
APPENDIX
Cabinet Dimensions
Unit = mm (inch)
Mini D-Sub 15 Pin Connector
Pin Assignments of D-Sub RGB Input Connector
Pin No. RGB Signal (Analog) YCbCr Signal
1Red Cr2Green or Sync on Green Y3Blue Cb
4Ground5Ground6Red Ground Cr Ground
7Green Ground Y Ground8Blue Ground Cb Ground9No Connection
10 Sync Signal Ground11 SCART Sync Sync12 Bi-directional DATA (SDA)
13 Horizontal Sync or Composite Sync14 Vertical Sync
15 Data Clock
Signal Level
Video signal : 0.7Vp-p (Analog)
Sync signal : TTL level
51423
10
11
12
13
14
15 6
97 8
99.2 (
3.9
)
96 (
3.8
)
230 (
9.1
)
245 (
9.6
)
89 (
3.5)
73.5 (
2.9)
310
(
12.2
)
(1.6
)
41.7
Lens center
Lens center