Panasonic Projector Pt Lb50ntu Operating Instructions

							
ENGLISH-61
Lamp unit replacement procedure
#Disconnect the power cord
from the projector by following
the procedure on page 28, and
check that the area around the
lamp unit has cooled down.
$ Use a Phillips screwdriver to
turn the lamp unit cover fixing
screws at the bottom of the
projector, and then remove the
lamp unit cover. %
Use a Phillips screwdriver to
loosen the two lamp unit fixing
screws until the screws turn
freely. Then hold the handles of
the lamp unit and gently pull the
lamp unit out from the projector.
& Insert the new lamp unit while
making sure that the direction
of insertion is correct, and then
use a Phillips screwdriver to
securely tighten the lamp unit
fixing screws.
When inserting the new lamp
unit, be sure to push it in at the
point  Aand B.
LAMP indicator
On-screen display
Illuminates red during
image projection and
standby mode.
Displayed for 30
seconds. Pressing any
button will clear the
display.
More than 1 800 hours
Remains displayed until
any button is pressed.
More than 2 000 hours

NOTE:
B
If the lamp usage time has passed 2 000 hours (when “LAMP POWER” \
has
been set to “STANDARD” and when “AI” has been set to “OFF\
”), the projector
will switch to standby mode after approximately 10 minutes of operation.\
 The
steps 
)to . on the next page should thus be completed within 10 minutes.

Lamp unit cover fixing screwsLamp unit cover

Lamp unit fixing screws
Handles
A
B
Care and maintenance 
						

							
62-ENGLISH
'Install the lamp unit cover, and
then use a Phillips screwdriver
to securely tighten the lamp
unit cover fixing screws.
( Connect the power cord.
) Press the POWER button so
that a picture is projected onto
the screen.
*Press the MENU button to display the menu screen, and
then press the  For G button
to select the “OPTION” menu.+ Press the ENTER button, and
then press the  For G button
to select “LAMP RUNTIME”.
, Press and hold the ENTER
button for approximately 3
seconds.
The “LAMP RUNTIME” screen
will be displayed.
-Press the POWER button to 
turn off the power.
.Disconnect the power cord
after the POWER button on the
projector illuminates red.
This will reset the cumulative
usage time for the lamp unit to “0”.

NOTE:
BBe sure to install the lamp unit
and the lamp unit cover
securely. If they are not securely
installed, it may cause the
protection circuit to operate so
that the power cannot be turned
on.
NOTE:
BPress any button other than
the POWER button to cancel
the “LAMP RUNTIME” screen.
NOTE:
BIf “DIRECT POWER ON” in the
“OPTION” menu has been set
to “ON”, projection will start
after the power cord is
connected. Refer to page 51
for details. 
						

							
ENGLISH-63
Before calling for service
Before calling for service, check the following points.Problem Possible cause
Page
Power does not
turn on.
No picture
appears.
The picture is
fuzzy.
The color is
pale or grayish.
No sound can
be heard.
The remote
control unit
does not
operate.
The buttons on
the projector do
not function.
BThe power cord may not be connected.
B The main power supply is not being supplied to the
wall outlet.
B TEMP indicator is illuminated or flashing. 
B LAMP indicator is illuminated or flashing. 
B The lamp unit cover has not been securely
installed.
B The video signal input source may not be
connected properly.
B The input selection setting may not be correct. 
B The “BRIGHTNESS” adjustment setting may be at
the minimum possible setting.
B The “SHUTTER” function may be in use.
B The lens focus may not have been set correctly. 
B The projector may not be at the correct distance
from the screen.
B The lens may be dirty.
B The projector may be tilted too much. 
B “COLOR” or “TINT” adjustment may be incorrect. 
B The input source which is connected to the
projector may not be adjusted correctly.
B The audio signal source may not be connected
properly.
B The volume adjustment may be at the lowest
possible setting. 
B A cable may be connected to the VARIABLE
AUDIO OUT connector. 
B The battery may be weak.
B The battery may not be inserted correctly.
B The remote control signal receptor on the projector
may be obstructed.
B The remote control unit may be out of the
operation range.
B The “CONTROL PANEL” may be set to “INVALID”. 
In order to set the “CONTROL PANEL” to “VALID”
without using the remote control unit, keep holding
down the ENTER button on the projector and press
the MENU button for more than 2 seconds. –
–
57
58 –
–
30
41
32,
53
27 20
–
18
41 –
–
32,
52
21,
22,
23
–
24
24
24
51
Care and maintenance 
						

							
64-ENGLISH
The picture does
not display
correctly.
Picture from
computer does
not appear.Problem Possible cause
B
The signal format (“TV-SYSTEM”) may not be set
correctly.
B There may be a problem with the video tape or
other signal source.
B A signal which is not compatible with the projector
may be being input.
B The cable may be too long.
B The external video output for the laptop computer
may not be set correctly.
(The actual method varies depending on the type
of computer, so refer to the documentation
provided with your computer for further details.)
B If an PC INPUT indicator is turned off, the video
signals may not be output from the computer.
B “PC2 SELECT” in the “OPTION” menu is set to
“OUTPUT” when the signals are input to PC 2
IN/PC 1 OUT connector.
Page
43 
–
68 
–
69 
14
50
Before carrying out cleaning and maintenance, be
sure to disconnect the power cord plug from the
wall outlet.
Wipe the cabinet with a soft, dry cloth.
If the cabinet is particularly dirty, soak the cloth in water with a sma\
ll amount
of neutral detergent in it, squeeze the cloth very well, and then wipe t\
he
cabinet. After cleaning, wipe the cabinet dry with a dry cloth. If using a
chemically-treated cloth, read the instructions supplied with the cloth \
before
use.
Do not wipe the lens with a cloth that is dusty or which produces lint.
If any dust or lint gets onto the lens, such dust or lint will be magnif\
ied and
projected onto the screen. Use a blower to clean any dust and lint from \
the
lens surface, or use a soft cloth to wipe off any dust or lint.
Cleaning and maintenance 
						

							
ENGLISH-65
Others
Specifications
Power supply: 100 V - 240 V ~, 50 Hz/60 Hz
Power consumption: 240 W [During standby (when fan isstopped): Approx. 4 W]
Amps: 2.8 A - 1.3 A
LCD panel: Panel size (diagonal): 0.6 type (15.24mm)
Aspect ratio: 4:3
Micro lens array: Available
Display method: 3 transparent LCD panels (RGB)
Drive method: Active matrix method
Pixels:PT-LB50NTU/PT-LB50U: 786 432 (1 024 x 768) x 3 panels
PT-LB50SU: 480 000 (800 x 600) x 3 panels
Lens: Manual zoom (1 - 1.2) / Manual focus F 1.6 - 1.9  f 18.8 mm - 22.6 mm
Lamp: UHM lamp (165 W)
Luminosity: 2 000 lm
Scanning frequency (for RGB signals):Horizontal scanning frequency: 15 kHz - 91 kHz
Vertical scanning frequency: 50 Hz - 85 Hz
Dot clock frequency: Less than 100 MHz
YPBPRsignals: 480i, 576i, 480p, 576p, 1 080/60i,  1 080/50i, 720/60p
Color system: 7 (NTSC/NTSC 4.43/PAL/PAL-M/PAL-N/ PAL60/SECAM)
Projection size: 838.2 mm - 7 620 mm (33˝ - 300˝)
Throw distance:PT-LB50NTU/PT-LB50U: 1.1 m - 11.1 m (3´7˝ - 36´5˝)
PT-LB50SU: 1.1 m - 10.9 m (3´7˝ - 35´9˝)
Optical axis shift: 6:1 (fixed)
Screen aspect ratio: 4:3
Installation: Front/Desk Front/Ceiling
Rear/Desk
Rear/Ceiling (menu selection)
Speaker: 4 cm x 2 cm oval x 1
Max. usable volume output: 1 W (mono)
Wireless LAN (PT-LB50NTU only):IEEE802.11 b/g
Connectors
PC IN/OUT: Dual  line, D-sub HD 15-pin (female)
(One line is available for input and output,
selectable using an on-screen menu) 
						

							
66-ENGLISH
During RGB input/output:R.G.B.: 0.7 V [p-p], 75  Ω
G.SYNC: 1.0 V [p-p], 75  Ω
HD, VD: TTL, automatic positive/negative polarity compatible
During YP
BPRinput/output:
Y: 1.0 V [p-p] (Including sync), 75  Ω
P
B, PR: 0.7 V [p-p], 75  Ω
VIDEO IN: Single-line, RCA pin jack, 1.0 V [p-p], 75  Ω
S-VIDEO IN: Single-line, Mini DIN 4-pin Y 1.0 V [p-p], C 0.286 V [p-p], 75  Ω
AUDIO IN:
Single-line, 0.5 V [rms] RCA pin jack x 2 (L-R)
PC AUDIO IN:Single-line, 0.5 V [rms] M3 jack (Stereo MINI)
VARIABLE  AUDIO OUT:Single-line, 0.5 V [rms] M3 jack (Stereo MINI)
(Monitor output/stereo compatible)
0 V [rms] - 2.0 V [rms] (variable)
SERIAL: DIN 8-pin RS-232C compatible
Cabinet: Moulded plastic (PC/ABS)
Dimensions:
Width: 297 mm (11-11/16˝ )
Length: 210 mm (8-1/4˝ )
Height: 57 mm (2-7/32˝ )(Not including the projection parts)
Weight:PT-LB50NTU: 1.9 k g(4.2 lbs.)
PT-LB50U/PT-LB50SU: 1.8 k g(4.0 lbs.)
Operating environment: Temperature: 0 °C - 40 °C (32 °F - 104 °F) [When the “HIGHLAND” is set to “ON”
(page 52): 0 °C - 35 °C (32 °F - 95 °F)]
Humidity: 20% - 80% (no condensation)
Certifications: UL60950, C-UL FCC Class B
Power supply: 3 V DC (AAA battery x 2)
Operating range: Approx. 7 m (23´) (when operated directly in front of signal receptor)
Weight: 74  g(2.6 ozs.) (including battery)
Dimensions: Width: 51.5 mm (2´) 
Length: 123 mm (4 -13/16˝ ) 
Height: 21.1 mm (-13/16˝ )
Ceiling bracket ET-PKB50
Wireless remote control unit ET-RM300
Serial adapter ET-ADSER
(DIN 8-pin/D-sub 9-pin) 
						

							
ENGLISH-67
Others
Projection dimensions calculation methods
If the screen size (diagonal) is SD (m), then the following formula \
is used to
calculate the projection distance for the wide lens position (LW) and \
the
projection distance for the telephoto lens position (LT).
Appendix

SD
SW4:3
LW / LT
H1 SH

NOTE:
BIf 4:3 images are projected onto a 16:9 screen that
has been set using the projection distance for a
16:9 screen, the 4:3 images will overflow the
screen at the top and bottom. In such cases, set
“ASPECT” to “S4:3”. (Refer to page 46 for details.)

*The values obtained from the formulas above are approximate.
For 16:9 aspect ratios, the following formula can be used to calculate t\
he
projection distance.
LW=0.0307xSD/0.0254-0.031
LT=0.0371xSD/0.0254-0.029
LW=0.0304xSD/0.0254-0.029
LT=0.0368xSD/0.0254-0.041PT-LB50NTU/PT-LB50U
PT-LB50SU
LW=0.0335xSD/0.0254-0.0315
LT=0.0405xSD/0.0254-0.0365
LW=0.0332xSD/0.0254-0.032
LT=0.0401xSD/0.0254-0.038PT-LB50NTU/PT-LB50U
PT-LB50SU 
						

							
68-ENGLISH
*1 The “i” appearing after the resolution indicates an interlaced sig\
nal.
*2 The following symbols are used to indicate picture quality.
AA Maximum picture quality can be obtained.
A Signals are converted by the image processing circuit before picture 
is projected.
B Some loss of data occurs to make projection easier.
*3 Signals with “OK” are compatible with the “RESIZING” functio\
n. (page 47)
*4 Signals that are compatible with the “FRAME LOCK” function. (page\
 47)
*5 Signals that are compatible with the CVT standard.
List of compatible signals
720 x 480i 15.7 59.9 A A OK OKS-Video/Video
720 x 576i 15.6 50.0 A A OK OKS-Video/Video720 x 480i 15.7 59.9 13.5 A A OK OKYPBPR/RGB720 x 576i 15.6 50.0 13.5 A A OK OKYPBPR/RGB720 x 483 31.5 59.9 27.0 A A OK OKYPBPR/RGB720 x 576 31.3 50.0 27.0 A A OK OKYPBPR/RGB1 920 x 1 080i33.8 60.0 74.3 A AYPBPR/RGB1 920 x 1 080i28.1 50.0 74.3 A AYPBPR/RGB1 280 x 72045.0 60.0 74.3 A AYPBPR/RGB640 x 400 31.5 70.1 25.2 A A OK OK RGB640 x 400 37.9 85.1 31.5 A A OK OK RGB640 x 480 31.5 59.9 25.2 A A OK OK RGB640 x 480 35.0 66.7 30.2 A A OK OK RGB640 x 480 37.9 72.8 31.5 A A OK OK RGB640 x 480 37.5 75.0 31.5 A A OK OK RGB640 x 480 43.3 85.0 36.0 A A OK OK RGB800 x 600 35.2 56.3 36.0 A AA OK RGB800 x 600 37.9 60.3 40.0 A AA OK RGB800 x 600 48.1 72.2 50.0 A AA OK RGB800 x 600 46.9 75.0 49.5 A AA OK RGB800 x 600 53.7 85.1 56.3 A AA OK RGB832 x 624 49.7 74.6 57.3 A A OK RGB1 024 x 76848.4 60.0 65.0 AA A RGB1 024 x 76856.5 70.1 75.0 AA A RGB1 024 x 76860.0 75.0 78.8 AA A RGB1 024 x 76868.7 85.0 94.5 AA A RGB1 024 x 768i35.5 87.0 44.9 AA A RGB1 152 x 86464.0 71.2 94.2 A A RGB1 152 x 86467.5 74.9 108.0 B B RGB1 152 x 86476.7 85.0 121.5 B B RGB1 152 x 87068.7 75.1 100.0 B B RGB1 280 x 96060.0 60.0 108.0 B B RGB1 280 x 1 02464.0 60.0 108.0 B B RGB1 280 x 1 02480.0 75.0 135.0 B B RGB1 280 x 1 02491.1 85.0 157.5 B B RGB1 400 x 1 05064.0 60.0 108.0 B B RGB1 400 x 1 05065.1 59.9 122.4 B B RGB1 600 x 1 20075.0 60.0 162.0 B B RGB1 280 x 76847.8 59.9 79.5AA RGB1 280 x 80049.7 59.8 83.5AA RGB1 440 x 90055.9 59.9 106.5AA RGB
Display
resolution (dots)*
1
Scanning
frequency
H 
(kHz) V 
(Hz)
Dot clock
frequency (MHz) Picture
quality*2
LB50NTU
LB50ULB50SU
Resizing*3
NTSC/NTSC4.43/PAL-M/PAL60PAL/PAL-N/SECAM480i576i480p576p1 080/60i1 080/50i720/60p
VGA400
VGA480
SVGA
MAC16 XGA
MXGA
MAC21MSXGASXGA
SXGA +
UXGA60
WXGA
FormatModeLB50NTU
LB50ULB50SU
*
*
*
*
*
*
*
*
*
*
*
* 
						

							
ENGLISH-69
Others
Guide screen for computer connection
Refer to the list below for details on the keyboard commands to change t\
he
output setting.
ManufacturerKeyboard
command Manufacturer Keyboard
command
Panasonic
NEC
TOSHIBA
SHARP
HP
FUJITSU EPSON
DELL
IBM
SONY
Apple
Other
+
+
+
+
+
+
Fn
F3

Fn
F5

Fn
F10

Fn
F8

Fn
F7

Fn

F7 
						

							
70-ENGLISH
Using the SERIAL connector
The serial connector which is on the connector panel of the projector
conforms to the RS-232C interface specification, so that the projector c\
an be
controlled by a personal computer which is connected to this connector.
Connection
Pin assignments and signal
namesBasic format
The data sent from the computer to
the projector is transmitted in the
format shown below.
Pin
No.
Communications settings
Signal name Contents

12
68
53

%
RXD Received data
& GND Earth
' TXD Transmitted data
#
$ Connected internally
(
)
* DIN 8-pin 
Appearance Signal level RS-232C
Asynchronous
Sync. method
Baud rate
Parity 9 600 bps
None
Character length 8 bits
Stop bit 1 bit
X parameter None
S parameter None
STX Command :
Parameter ETX
Start byte
(02h)
3 bytes1 byte
1 byte-5 bytes End byte
(03h)

DIN 8-pin (male)
Serial adapter
(ET-ADSER : sold
separately) SERIAL(female)
Computer
NOTE:

B
The projector can not receive
the command for 10 seconds
after the lamp is switched on.
Wait 10 seconds before sending
the command.
B If sending multiple commands,
check that a response has been
received from the projector for
one command before sending
the next command.
B When a command which does
not require parameters is sent,
the colon (:) is not required.
B If an incorrect command is sent
from the personal computer, the
“ER401” command will be sent
from the projector to the
personal computer.
NC
NC
NOTE:
B
You must use only RS-232C
Serial Interface Cable with
ferrite core, type ET-ADSER.