Panasonic Projector Pt Lb50ntu Operating Instructions

							
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Adjustments and settings
The mode best used in dark rooms
is “NATURAL”. For rooms having
regular lighting conditions in use,
select “STANDARD”. For
exceptionally bright rooms, use
“DYNAMIC”.
“BLACKBOARD” is available only
when “BLACKBOARD” in the
“OPTION” menu is set to “ON”.
Select “BLACKBOARD” when
projecting onto blackboards.
CONTRAST
This adjusts the contrast of the
picture. (Adjust the “BRIGHTNESS”
setting first if required before
adjusting the “CONTRAST” setting.)
The picture is bright: Ibutton
The picture is dark:  Hbutton
BRIGHTNESS
This adjusts the darker areas (black
areas) in the picture.
Black areas are too light:  Ibutton
Dark areas are too solid:  Hbutton
COLOR
(S-VIDEO/VIDEO/YPBPRonly)
The color is too deep:  Ibutton
The color is too pale:  Hbutton
TINT
(NTSC/NTSC 4.43/YPBPRonly)
This adjusts the flesh tones in the
picture.
The flesh tones are greenish: 
I button
The flesh tones are reddish: 
H button
SHARPNESS
To soften the picture details: 
Ibutton
To sharpen the picture details: 
H button
COLOR TEMPERATURE
This is used to adjust the white
areas of the picture if they appear
bluish or reddish.
Nor mally “STANDARD” should be
selected. If the white areas of the
pictures appear reddish, set to
“HIGH”. If the white areas of the
pictures appear bluish, set to
“LOW”.

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.

##
Press the  F
F   
or G
G   
button to
select “PICTURE MODE”, and
then press the I
I   
or H
H   
button
to select “NATURAL”.
$
$
Press the DEFAULT button on
the remote control unit.
%
%
Press the  F
F   
or G
G   
button to
select “COLOR
TEMPERATURE”, and then
press the I
I   
or H
H   
button to
select “STANDARD”.
Projecting sRGB-
compatible pictures 
						

							
42-ENGLISH
DETAILED SETUP
You can adjust the picture quality of
the projected images in detail. Press
the ENTER button to display the
“DETAILED SETUP” menu.
WHITE BALANCE
RED/GREEN/BLUE
(RGB only)
This is used to adjust the white
areas of the picture if they appear
colorised. 
To make the selected color lighter:
Ibutton 
To make the selected color stronger:
H button
NOTE:
B“AI” is disabled when “LAMP
POWER” is set to “ECO-
MODE”. (Refer to page 50.)
NOTE:
B“AUTO” may not function
correctly if any objects are
placed on the projector.
B “AUTO” will be disabled when
“INSTALLATION” in the
“OPTION” menu is set to
“REAR/DESK” or
“REAR/CEILING”.
AI
ON
The lamp is controlled according to
the input signals to project images
with the best quality.
OFF
“AI” is disabled.
DAYLIGHT VIEW
This adjusts the vividness of the
projected images when the projector
is used under bright lighting.
AUTO
The vividness of the projected
images will be adjusted according to
the lighting condition of the room.
OFF
“DAYLIGHT VIEW” is disabled.

NOTE:
BsRGB 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”). 
						

							
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Adjustments and settings
NOISE REDUCTION
(S-VIDEO/VIDEO only)
If the signal is of such poor quality
that picture interference appears,
set “NOISE REDUCTION” to “ON”.
To turn off the “NOISE
REDUCTION” feature, set to “OFF”.
STILL MODE
(S-VIDEO/VIDEO only)
To reduce flickering of still images
(vertical flicker), set “STILL MODE”
to “ON”. This should normally be set to
“AUTO”. If the signal is of such poor
quality that the correct format
cannot be automatically
distinguished, change the setting
manually to the required TV system.

TV-SYSTEM
(S-VIDEO/VIDEO only)
NOTE:
BWhen set to “AUTO”, the
projector automatically
distinguishes between
NTSC/NTSC 4.43/PAL/PAL60/
PAL-M/PAL-N/SECAM signals.
NOTE:
BSet to “OFF” when playing
back moving images.

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REALTIME KEYSTONE
This projector detects its own
degree of tilt and corrects the
keystone distortion automatically. 
ON
“REALTIME KEYSTONE” is
enabled.
OFF
“REALTIME KEYSTONE” is
disabled.
KEYSTONE
This projector detects its own
degree of tilt and corrects the
keystone distortion automatically
(“REALTIME KEYSTONE” ).
However, keystone distortion may
still affect the images in some cases
(e.g. when the projector is tilted
slightly and the tilt is corrected
slowly by hand or when the screen
itself is tilted). In such cases, set
“REALTIME KEYSTONE” to “OFF”
and correct the vertical keystone
distortion manually.
Adjusting the position
#Press the MENU button to display the menu screen.
$ Select the “POSITION” menu from the main menu, and then press the
ENTER button.
% Press the F or G button to select an item. (When RGB signals are
being input, first press the AUTO SETUP button to initiate automatic
positioning. If the optimum setting is not obtained when “AUTO
SETUP” is carried out, adjust the items manually.)
& Press the  Ior H button to adjust the value or change the setting. For
items with selective setting or a bar scale, the individual adjustment
screen will be displayed.

When an S-VIDEO/VIDEO signal is
being input
When an RGB/ YP
BPRsignal is
being input
When WIRELESS is selected 
						

							
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Adjustments and settings
POSITION
(S-VIDEO/VIDEO/RGB/YPBPRonly)
Moves the picture position.
Press the ENTER button to display the
“POSITION” screen.
Press the  Ior H button to move the
picture horizontally.
Press the  For G button to move the
picture vertically.
DOT CLOCK
(RGB only)
Periodic striped pattern interference
(noise) may occur when a striped
pattern such as the one below is
projected. If this happens, press the
I or H button to adjust so that any
such noise is minimised.
CLOCK PHASE
(RGB/YPBPRonly)
Adjust the “DOT CLOCK” setting
first before carrying out this
adjustment. Press the  Ior H
button to adjust so that the noise
level is least noticeable.
NOTE:
B If signals with a dot clock
frequency of 100 MHz or higher
are being input, interference
may not be completely
eliminated when the “DOT

Picture
condition
Operation
Picture
condition
Operation
Press the F or Hbutton.
Press the G or Ibutton.

NOTE:
B
Vertical keystone distortion can be
corrected to ±30° of the angle of tilt.
However, the greater the correction
amount, the more the picture quality
will deteriorate, and the harder it will
become to achieve a good level of
focus. To obtain the best picture
quality, set up the projector and
screen in such a way that the
amount of keystone correction
required is as minimal as possible.
BThe picture size will also change
when correction of keystone
distortion is carried out.
B The ratio of length and width of
an image may become incorrect
depending on the amount of the
keystone correction.
B
Keystone distortion of the on-
screen display will not be corrected.
BYou can correct the keystone distortion manually when
“REALTIME KEYSTONE” is set to
“ON”. However, when you turn on
the power, the amount of
correction will be reset and
“REALTIME KEYSTONE” will
function again if the tilt is different
from the last time you used the
projector. If you correct the
keystone distortion manually when
“REALTIME KEYSTONE” is set to
“OFF”, the amount of correction
will be stored by the projector
even after the power is turned off. 
						

							
46-ENGLISH
CLOCK” and “CLOCK PHASE”
adjustments are carried out.S4:3
The size of the input signal is
compressed to 75% and projected.
(This is useful for projecting a
picture with a 4:3 aspect ratio onto a
16:9 screen.)
AUTO
(S-VIDEO only)
When an S1 video signal is being
input, the aspect ratio is changed
automatically to project a 16:9
picture.
4:3
The input signal is projected without
change.
16:9
The picture is compressed to a ratio
of 16:9 and projected.

S1 video signals
BS1 video signals are a type of
video signal with an aspect ratio
of 16:9 which include a detector
signal. This detector signal is
output by some sources such as
wide-vision video decks. 
BWhen “ASPECT” is set to
“AUTO”, the projector recognizes
the detector signal and
automatically switches the aspect
ratio to 16:9.
When a horizontally
squeezed signal is
being input. When a 4:3 signal
is being input.[
[
When using the 16:9 screen

ASPECT
(S-VIDEO/VIDEO/480i, 576i, 480p
and 576p YP
BPRonly) 
						

							
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Adjustments and settings
RESIZING
(S-VIDEO/VIDEO/RGB/YPBPRonly)
This should normally be set to “ON”.
(This setting is only for signals
which have lower resolutions than
the LCD panels. Refer to page 68
for details.)
ON
The pixel resolution of the input
signal is converted to the same
resolution as the LCD panels before
being projected. 
This may sometimes cause
problems with the quality of the
picture.
OFF
The input signal is projected at its
original resolution, with no pixel
conversion. The projected picture
will be smaller than normal, so
adjust the zoom setting or move the
projector forwards or backwards to
adjust the picture size if necessary.
If set to “OFF”, some features, such
as “DIGITAL ZOOM”, “REALTIME
KEYSTONE”, “KEYSTONE” or
“INDEX WINDOW” will not function.
FRAME LOCK
(RGB only)
If the picture’s condition is bad while
an RGB moving picture is projected,
set “FRAME LOCK” to “ON”. Refer
to page 68 for compatible RGB
signals.
NOTE:
B If using this projector in places
such as cafes or hotels to
display programes for a
commercial purpose or for
public presentation, note that if
the aspect ratio (16:9)
selection function is used to
change the aspect ratio of the
screen picture, you may be
infringing the rights of the
original copyright owner for
that programe under copyright
protection laws.
B If a 4:3 picture is projected
onto a 16:9 screen, distortion
may occur around the edges of
the picture so that part of the
picture is no longer visible.
Programes which have 4:3
aspect ratios should be viewed
in 4:3 mode to give proper
consideration to the aims and
intentions of the original
programe’s creator. 
						

							
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Changing the display language
#Press the MENU button to display the menu screen.
$ Select the “LANGUAGE” menu from the main menu, and then press
the ENTER button.
% Press the  F
F
or G
G
button to select a language, and then press the
ENTER button.

1/2
G

Indicates the language which
is currently set

2/2F

F   G 
						

							
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Adjustments and settings
Option settings
#Press the MENU button to display the menu screen.
$ Select the “OPTION” menu from the main menu, and then press the
ENTER button.
% Press the F or Gbutton to select an item.
& Press the I or Hbutton to change the setting. For “DETAILED
SETUP”, press the ENTER button to display the next screen.
DETAILED
The input signal information will be
displayed in detail.
OFF
The input signal information will not
be displayed.
SIMPLE
Only the name of the input signal
will be displayed.
STARTUP LOGO
ON
The “Panasonic” logo will be
displayed when the power is turned
on.
OFF
The “Panasonic” logo will not be
displayed when the power is turned
on.
INPUT GUIDE
When the input signal is changed,
the input signal information will be
displayed in the upper right corner
of the projected images. You can
select the level of the input signal
information.
F   G
NOTE:
BIf “INPUT GUIDE” is set to
“DETAILED”, the guide screen
for computer connection will be
displayed when PC1 or PC2 is
selected and no signal is being
input to the PC 1 IN or PC 2 IN
connector. If you would like the
guide screen not to be
displayed, set “INPUT GUIDE”
to “SIMPLE” or “OFF”. 
						

							
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LAMP POWER
This setting changes the lamp
brightness. When set to “ECO-
MODE”, the luminance of the lamp
is reduced, but the projector uses
less power, and the operating noise
is also reduced. This can help to
extend the lamp’s operating life. If
using the projector in small rooms
where high luminance is not
required, it is recommended that
you set the “LAMP POWER” to
“ECO-MODE”.
LAMP RUNTIME
This setting displays the usage time
for the lamp unit which is currently
being used. When replacing the
lamp unit, follow the instructions on
page 61, and reset “LAMP
RUNTIME” to “0”.
POINTER SELECT
If you press the POINTER button on
the remote control unit, the pointer
will be displayed. You can select the
pointer from 3 types as shown
below (refer to page 35).
®¯A double circle will bedisplayed.
®¯A circle with a cross will bedisplayed.
®¯A hand will be displayed.
PC2 SELECT
This setting is used to select the
function of the PC 2 IN/PC 1 OUT
connector. When set to “INPUT”, it
is set to the PC 2 IN connector.
When set to “OUTPUT”, it is set to
the PC 1 OUT connector.

NOTE:
B “LAMP POWER” cannot be set
when no signal is being input.

NOTE:
BThe lamp’s operating life varies
depending on the usage
conditions (such as the “LAMP
POWER” setting and the
number of times the power is
turned on and off).