Panasonic LCD Projector PT-LB51NTU PT-LB51U PT-LB51SU Operating Instructions

							Basic Operation
Switching the projector on/off
ENGLISH - 21
1. Plug the Power cord into the projector.
 The POWER indicator lights up in RED.
2. Press the POWER button.
 The POWER indicator lights up in GREEN after flashing for a while.
 The STARTUP LOGO is displayed on the screen. See “STARTUP LOGO” on page 34.
1. Press the POWER button.
 The confirmation screen is displayed. It will disappear and return to the projection after 10 seconds without any 
operation.
 To return to the projection, press any button except the POWER button.
2. Press the POWER button.
 The POWER indicator lights up in ORANGE while cooling the lamp, then illuminates RED.
3. Once the POWER indicator is lit red, unplug the Power cord from the projector.
 If you are in a hurry, you can also use the direct power off function while unplugging the Power cord from the projector. 
(page 20)
Switching on the projector
NOTE:
• Some small rattling or tinkling sound may be heard when starting up, but this is normal and does not affect the 
performance of the projector.
• If you disconnected the Power cord while on projecting mode, the projection will start with connecting the Power cord.
See “DIRECT POWER ON” on page 35.
Switching off the projector
NOTE:
• Press the POWER twice or for a long duration to switch the power off.
• You can disconnect the Power cord instead of following this procedure. See “DIRECT POWER ON” on page 35.
• You can turn off the projector by pressing the POWER button longer than 0.5 seconds.
(2)
POWER button
POWER indicator
(1)(2)
POWER button
POWER indicator 
						

							ENGLISH - 22
Basic Operation
Projecting an image
1. Switch on the connected devices.
 Press the play button of the required device.
2. Press the INPUT SELECT buttons to select the required input method if needed. See “Switching the input 
signal” on page 24.
 The image will be projected on the screen.
Follow the procedure below when you set the projector up first, and when you change the placement after original 
setup.
1. Adjusting the angle.
 Place the projector so that it is vertical to the screen.
 While pressing the Front leg adjuster button, adjust the forward/back angle of tilt of the projector. Adjust so that the 
projected image is placed at the center of the screen.
 See “Front adjustable legs and throwing angle” on page 17.
2. Press the AUTO SETUP button (when RGB signals are being input).
 Settings such as the position of the image will be corrected automatically. See “Setting up the image position 
automatically” on page 23.
3. Adjusting the size.
 Turn the Zoom ring to adjust the size of the projected image.
4. Adjusting the focus.
 Turn the Focus ring to adjust the focus of the projected image.
Selecting the input signal
NOTE:
•SIGNAL SEARCH is ON as default and the signal from the connected devices is detected automatically. See “SIGNAL 
SEARCH” on page 35.
• If no signal is detected, the guide screen for computer connection will be displayed (when “INPUT GUIDE” in the 
“OPTION” menu is set to “DETAILED”. See “INPUT GUIDE” on page 34.)
• Press the INPUT SELECT button to finish the input signal search.
Positioning the image
NOTE:
• Heated air comes out of the Air exhaust port. Be careful of this when adjusting the Font adjustable legs.
• If keystone distortion occurs, see “KEYSTONE” on page 32.
• If you adjust the focus, you may need to adjust the size of the image by moving the Zoom ring again.
Screen
Zoom ring
Focus ring 
						

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Basic Operation
Remote control operation
You can operate the projector with the Remote control 
within the remote range 15 m (492).
QFacing to the projector
Ensure the Remote control emitter is facing to 
the Remote control signal receptor on front of 
the projector and press the required buttons to 
operate.
QFacing to the screen
Ensure the Remote control emitter is facing to 
the screen and press the required buttons to 
operate the projector. The signal will be reflected 
off the screen. The operating range may differ due 
to the screen material. This function may not be
effective with a translucent screen.
You can adjust the setting of  the image 
position, DOT CLOCK and CLOCK PHASE 
automatically for the projected COMPUTER 
signal image.
Operating range
AUTO
SETUP
INPUT
SELECT
COMPUTER WIRELESS VIDEO
WIRELESS
PRESENTATIONPA G E
MENU
ENTER
FREEZE SHUTTERCOMPUTER
SEARCHDEFAULTINDEX-WINDOW
MULTI-LIVE
DIGITAL ZOOM VOLUMERETURNNOTE:
• Do not let strong light shine onto the signal receptor. 
The Remote control may malfunction under strong 
light such as fluorescent.
• If there are any obstacles between the Remote control 
and the Remote control signal receptor, the Remote 
control may not operate correctly.
Setting up the image position automatically
NOTE:
•SIGNAL SEARCH will be adjusted only when the 
SIGNAL SEARCH is set to ON.
• If the dot clock frequency is 100 MHz or higher, AUTO 
SETUP is not effective.
• If the projected image is dark or blurred around the 
edge, AUTO SETUP may stop the processing before 
complete. Project a much clearer or lighter image and 
press the AUTO SETUP button again.
• When FUNCTION BUTTON is set to AUTO SETUP 
(see “FUNCTION BUTTON” on page 34), the AUTO 
SETUP operation can also be carried out by pressing 
the FUNCTION button at the front of the projector.
Screen Projected image 
						

							Basic Operation
Remote control operation
ENGLISH - 24
You can switch the input method manually by 
pressing the COMPUTER, WIRELESS (PT-
LB51NTU only) and VIDEO buttons. Press 
the required button several times or I H to 
cycle through the input methods as follows. 
The actual projected image will be changed 
in a while.
JPressing the COMPUTER button
JPressing the WIRELESS button
 The WIRELESS button is only for PT-LB51NTU.
 See CD-ROM contents for more detailed information.
JPressing the VIDEO button
JPressing the INPUT SELECT 
button on the projector
 WIRELESS is only for PT-LB51NTU.
When projecting an image, press FREEZE to 
capture the projected image and display it on 
the screen as a still picture. Press again to 
escape. While the image is frozen, the sound 
will be stopped.
The “SHUTTER” function can be used to 
momentarily turn off the picture and sound 
from the projector when the projector is not 
being used for short periods of time, such as 
during breaks in meetings or when carrying out 
preparation. The projector uses less power in 
“SHUTTER” mode than it does in normal 
projection mode. 
Switching the input signal
NOTE:
• Only when the COMPUTER2 SELECT is set to INPUT, 
you can switch between COMPUTER1 and 
COMPUTER2.
COMPUTER1
COMPUTER2
VIDEO
S-VIDEO
COMPUTER1
WIRELESSS-VIDEO
VIDEO
COMPUTER2
NOTE:
• See “List of compatible signals” on page 44.
• See “Connections” on page 18.
Capturing an image
NOTE:
• Press the FREEZE button to return to the projection.
• When FUNCTION BUTTON is set to FREEZE (see 
“FUNCTION BUTTON” on page 34), the FREEZE 
operation can also be carried out by pressing the 
FUNCTION button at the front of the projector.
Stopping the projection temporary
NOTE:
• Escaping from the shutter mode is available by 
pressing any button.
• This operation can also be carried out using the 
SHUTTER command in the MAIN MENU. 
See “SHUTTER” on page 36.
• When FUNCTION BUTTON is set to SHUTTER (see 
“FUNCTION BUTTON” on page 34), the SHUTTER 
operation can also be carried out by pressing the 
FUNCTION button at the front of the projector. 
						

							Basic Operation
Remote control operation
ENGLISH - 25
You can reset most of the customised settings 
to the factory defaults by pressing DEFAULT 
button of the Remote control. Display the 
required sub menu or the menu items and 
press the DEFAULT button again.
 See “Main menu and Sub-menu” on page 28.
You can project an image in split 2 windows 
as an INDEX-WINDOW, one is frozen, stored 
in memory and displayed on the screen’s left 
side, while the display of subsequent images 
continues on the right.
To escape from the INDEX-WINDOW, press 
the RETURN button.
QSwitching the position
In default, the frozen image is displayed on the left 
and the subsequent image is displayed on the 
right. Press IH to switch the position.
QChanging the image size
Press F G to switch and cycle through in 3 size.
QCapturing a new image
While in INDEX-WINDOW mode, press ENTER to 
capture a new image and the frozen image window 
will be updated in a while.
Resetting to the factory default settings
NOTE:
• Some menu items are not available to reset by pressing 
the DEFAULT button. Adjust each menu items 
manually.
Projecting an image in INDEX-WINDOW mode
Projected imageFrozen image
Continuing image
Frozen image
Continuing image
Continuing image
Frozen image
NOTE:
• If you change the window size, the aspect ratio of the 
image is changed and becomes vertically elongated.
• This operation can also be carried out using the 
INDEX-WINDOW command in the MAIN MENU. 
See “INDEX-WINDOW” on page 36.
• When FUNCTION BUTTON is set to “INDEX 
WINDOW” (see “FUNCTION BUTTON” on page 34), 
the INDEX-WINDOW operation can also be carried out 
by pressing the FUNCTION button at the front of the 
projector.
Frozen image
Continuing image 
						

							Basic Operation
Remote control operation
ENGLISH - 26
You can enlarge the projected image down 
to a centered area for emphasizing within 
the range of 1x to 2x.
QEnlarging the image
1. Press DIGITAL ZOOM +/- button once.
 The centered area of the image will then be enlarged 
to 1.5x.
2. Adjust the image size by pressing DIGITAL ZOOM 
+/- button.
 The image size will be changed in steps of 0.1.
QShifting the center point
Press F G I H to shift the center point.
You can control the volume of the built-in 
speakers and output sound. Press +/- to 
control the volume.
Enlarging the centered area
NOTE:
• When the COMPUTER signal is projected, the enlargement range will be changed to 1x to 3x. When the FRAME LOCK 
in POSITION menu is set to ON, the enlargement range is 1x to 2x. See “FRAME LOCK” on page 33.
• When the input signal is changed while the DIGITAL ZOOM is activated, the DIGITAL ZOOM will be canceled.
Controlling the volume of the speaker
NOTE:
• Power consumption can be reduced if the volume level 
is lowered.
• This operation can also be carried out using the 
VOLUME command in the MAIN MENU. 
See “VOLUME” on page 36. 
						

							ENGLISH - 27
Settings
Menu Navigation
The menu system allows you to access functions which do not have their own dedicated buttons on the Remote 
control. The menu options are structured and categorised. You can navigate through the menu with F G H I 
buttons.
JDisplaying the Main menu
Press the MENU button to display the Main 
menu and the operating guidance.
 The illustrations of the on-screen menus in this 
operating instructions are for the PT-LB51NTU.
JAdjusting with the bar scale 
items
The triangle mark under the bar indicates factory 
default setting and the square indicates the current 
setting.
JReturning to the previous menu
Press the MENU or RETURN button to return to 
the previous menu. Press repeatedly to escape 
from the menu mode and return to the 
projection.
JOperating procedure
1. Press F G to scroll to the required Main menu 
item and press ENTER to select.
 The selected item is highlighted in orange and the 
Sub-menu is displayed on the right. 
 See “Main menu and Sub-menu” on page 28.
2. Press F G to scroll to the required Sub-menu 
item and press I H or ENTER to adjust.
 The selected item is called up and the other menu 
items disappear from the screen. Called up item will 
be disappear after 5 seconds and return to the menu 
mode.
 If there is a lower level, the next level will be 
displayed.
3. Press I H to adjust or set the selected item.
 For items using a bar scale, the current settings are 
displayed on the left of the bar scale.
 You can cycle through the options of an item by 
pressing I H.
4. Press MENU or RETURN to return to the previous 
menu.
Navigating through the MENU
PICTURE
POSITIONPICTURE MODE
CONTRAST
BRIGHTNESS
COLOR
TINT
SHARPNESS
COLOR TEMPERATURE
DAYLIGHT VIEW
AI
DETAILED SETUP
LANGUAGE
OPTION
SECURITY
WIRELESS
STANDARD
STANDARD
AUTO
ON
SELECT
ENTER RETURN
Main menu Sub-menuCurrent 
settings
Operating guidance
Contains the required buttons to adjust the settings.
KEYSTKEYSTONEONE
Current setting
Default
PICTURE
POSITION
KEYSTONE
POSITION
DOT CLOCK
CLOCK PHASE
ASPECT
RESIZING
FRAME LOCK
LANGUAGE
OPTION
SECURITY
WIRELESS
4:3
ON
OFFON
SELECT
ENTER RETURN
REALTIME KEYSTONE
SELECT
DEFAULTENTER RETURN
PICTURE
POSITIONKEYSTONE
POSITION
DOT CLOCK
CLOCK PHASE
ASPECT
RESIZING
FRAME LOCK
LANGUAGE
OPTION
SECURITY
WIRELESS
4:3
ON
OFF
KEYSTKEYSTONEONE
NOTE:
• See “Resetting to the factory default settings” on page 25 to reset each menu items. 
						

							Settings
Menu Navigation
ENGLISH - 28
The Main menu has 6 options. Select the required menu item and press ENTER to display the Sub-menu. 
Main menu and Sub-menu
NOTE:
• Some default settings vary by the selected input signal.
•Sub-menu items vary according to the selected input signal.
• Some settings are adjustable without any signals.
Main menuSub-menuOptions (Under line is default setting)Page
PICTURE PICTURE MODE NATURAL DYNAMICpage 30
STANDARD
BLACKBOARD
CONTRAST• Default: 0 page 30
BRIGHTNESS• Default: 0 page 30
COLOR
*1
*1.S-VIDEO/VIDEO/COMPONENT signals only• Default: 0 page 30
TINT
*1• Default: 0 page 30
SHARPNESS• Default: 0 page 30
COLOR TEMPERATURE LOW STANDARD
page 30
HIGH
DAYLIGHT VIEW AUTO
OFFpage 31
AI ON
OFFpage 31
DETAILED SETUP
*2
*2.S-VIDEO/VIDEO/COMPUTER signals onlyWHITE BALANCE WHITE BALANCE REDpage 31
(RGB signals only)WHITE BALANCE GREEN
• Default: 0WHITE BALANCE BLUE
TV-SYSTEM AUTO
NTSC
(S-VIDEO/VIDEO 
signals only)NTSC 4.43 PAL
PAL-M PAL-N
SECAM
STILL MODE OFF
(S-VIDEO/VIDEO)ON
NOISE REDUCTION ON
(S-VIDEO/VIDEO)OFF
POSITION REALTIME KEYSTONE OFF ON
page 32
KEYSTONE• Default: 0 page 32
POSITION
*3
*3.S-VIDEO/VIDEO/COMPUTER/COMPONENT signals onlyH• Default: 0 page 32
V• Default: 0
DOT CLOCK
*4
*4.COMPUTER/COMPONENT signals only• Default: 0 page 32
CLOCK PHASE
*4• Default: 0 page 32
ASPECT
*34:3S4:3page 32
16:9 AUTO
RESIZING OFF ON
page 33
FRAME LOCK
*4OFFONpage 33
LANGUAGE
page 33 
						

							Menu Navigation
ENGLISH - 29
Settings
Main menuSub-menuOptions (Under line is default setting)Page
OPTION INPUT GUIDE DETAILED
SIMPLEpage 34
OFF
STARTUP LOGO ON
OFFpage 34
FUNCTION BUTTON SHUTTER
AUTO SETUPpage 34
PICTURE MODE FREEZE
INDEX-WINDOW
COMPUTER2 SELECT INPUT
OUTPUTpage 34
LAMP POWER STANDARD
ECO-MODEpage 34
LAMP RUNTIMEpage 35
POWER OFF TIMER DISABLE
35 MIN.                        60 MIN.page 35
15 MIN. 40 MIN.
20 MIN. 45 MIN.
25 MIN. 50 MIN.
30 MIN. 55 MIN.
DIRECT POWER ON OFF
ONpage 35
CONTROL PANEL VALID
INVALIDpage 35
AUTO SETUP AUTO
BUTTONpage 35
SIGNAL SEARCH ON
OFFpage 35
INSTALLATION FRONT/DESK
REAR/DESKpage 35
FRONT/CEILING REAR/CEILING
HIGHLAND OFF
ONpage 36
RGB/YPBPR AUTO
RGBpage 36
YP
BPR
VOLUME• Default: 20 page 36
DETAILED SETUP INDEX WINDOWpage 36
SHUTTER
OSD DESIGN TYPE1 TYPE2
TYPE3
SXGA MODE SXGA SXGA+
XGA MODE XGA WXGA
BLACKBOARD ON
OFF
BACK COLOR BLUE
BLACK
SECURITY INPUT PASSWORD OFF
ONpage 37
PASSWORD CHANGEpage 37
TEXT DISPLAY OFF
ONpage 37
TEXT CHANGEpage 37
WIRELESS NETWORKpage 38
NAME CHANGE
INPUT PASSWORD
PASSWORD CHANGE
(PT-LB51NTU 
only)WEB CONTROL
LIVE MODE CUT IN
STATUS
INITIALIZE(See CD-ROM contents for detailed information) 
						

							ENGLISH - 30
Settings
PICTURE menu
Depending on the projection environment, you can use 
these preset parameter settings to optimise image 
projection. Press I H to cycle through the options.
You can adjust the contrast of the projected image. 
Adjust the BRIGHTNESS in advance if necessary.
You can adjust the brightness of the projected image.(S-VIDEO/VIDEO/COMPONENT signals only)
You can adjust the color saturation of the projected 
image.
(NTSC/NTSC 4.43/COMPONENT signals only)
You can adjust the skin tone in the projected image.
You can adjust the sharpness of the projected image.
You can adjust the white balance of the projected image.
 LOWMore bluish
 STANDARDBalanced white
 HIGHMore reddish
PICTURE MODE
STANDARDSetting for a general image
DYNAMICBright and sharp setting
BLACKBOARDSetting for when projecting on 
a blackboard
See “BLACKBOARD” on 
page 36.
NATURALReproduces the original color 
of the image
NOTE:
• It may take for a while until the selected mode is 
stabilised.
• When FUNCTION BUTTON is set to PICTURE 
MODE (see “FUNCTION BUTTON” on page 34), the 
PICTURE MODE operation can also be carried out by 
pressing the FUNCTION button at the front of the 
projector.
CONTRAST
BRIGHTNESS
Remote control Control panel
 See “Navigating through the MENU” on page 27.
 See “Main menu and Sub-menu” on page 28.
Higher Lower
Brighter Darker
COLOR
TINT
SHARPNESS
COLOR TEMPERATURE
Projecting sRGBcompatible pictures
sRGB is an international color reproduction standard 
(IEC61966-2-1) established by the International 
Electrotechnical Commission (IEC).
If you would like the colors in sRGB-compatible pictures 
to be reproduced more faithfully, make the following 
settings.
1. Press the F or G button to select “PICTURE 
MODE”, and then press the I or H button to 
select “NATURAL”.
2. Press the DEFAULT button on the remote control 
unit.
3. Press the F or G button to select “COLOR 
TEMPERATURE”, and then press the I or H 
button to select “STANDARD”.
NOTE:
• sRGB is only enabled when RGB signals are being 
input (when “LAMP POWER” is set to “STANDARD”, 
“AI” is set to “OFF”, and “DAYLIGHT VIEW” is set to 
“OFF”).
Darker Lighter
More 
greenish More 
reddish
More 
sharp Less 
sharp