Panasonic LCD Projector PT-LB80NTU PT-LB80U PT-LB75NTU PT-LB75U Operating Instructions

							ENGLISH - 11
Preparation
Read this first
When you start the projection for the first time or after the projector is initialised, the minimum required setting screen 
for projection will be displayed.
JLANGUAGE
Select the required language setting.
Press F G I H buttons of the remote control or 
control panel on the projector to highlight the 
required language, and press the ENTER button to 
proceed to the next setting.
JOPTION
Select the current projection method and fan speed 
setting. If you need return to the previous setting, 
press the RETURTN button.
INSTALLATION
Press I H buttons of the remote control or control 
panel on the projector to select the required 
installation method. Press G to proceed to the 
ALTITUDE setting.
ALTITUDE
If you use the projector at high elevation, the 
ALTITUDE setting need to be HIGH to set the fan 
speed high. Press I H to select the required 
option. If you need to return to the INSTALLATION, 
press F.
 LOWThe fan speed is low.
 HIGHThe fan speed is high.
Press the ENTER button to start the projection.
 Once you finish the minimum requirement setting, it will not be displayed again unless the projector is 
initialised. See “INITIALIZE ALL” on page 36.
 You can change each settings in the main menu. See “Menu Navigation” on page 27.
Minimum required setting screen
LANGUAGE
SELECT
ENTER
PLEASE SELECT LANGUAGE
INSTALLATION OPTIONFRONT/DESK
ALTITUDELOW
SELECT
ENTER RETURN
SWITCH TO HIGH ALTITUDE MODE HIGH IF OVER 1400m(4593Ft).
FRONT/DESKSetting on a desk/floor and 
projecting from front
FRONT/CEILINGMounting in the ceiling and 
projecting from front
REAR/DESKSetting on a desk/floor and 
projecting from rear
REAR/CEILINGMounting in the ceiling and 
projecting from rear
NOTE:
• At 1400 - 2700m(4593 - 8858ft) sea level, the 
setting must be HIGH.
• The loudness of fan noise depends on the ALTITUDE 
setting. 
						

							ENGLISH - 12
Preparation
About Your Projector
JTop and front view
Projector body
NOTE:
• Do not cover the ventilation openings or place anything within 50 cm (20) of them as this may cause damage or injury.
• While the projector is not in use, keep the lens cover attached to protect the lens.
Zoom-Focus ring cover
Cover the zoom and focus rings to protect 
from dust.
Navigation buttons
Navigate through the menus with FGIH, 
and activate the menu item with ENTER. 
(page 27)
MENU button
Display the main menu. 
(page 27)
Control panelFUNCTIONFUNCTIONMENUMENURETURNRETURNINPUT SELECTINPUT SELECTRELEASERELEASE
INPUT SELECT button
Switch to cycle through the input method. 
(page 22)
COMPUTER1\COMPUTER2\S-VIDEO\
VIDEO\WIRELESS\COMPUTER1
POWER button
Switch between stand-by mode 
and projection mode. (page 19/
page 20)
FUNCTION button
Assign a useful function for shortcut. 
(page 25)
RETURN button
Return to the previous 
menu. (page 27)
RELEASE button
Press to release the locked 
POWER button when turning 
on the projector. (page 19)
Zoom ring
(page 22)
Lens cover 
page 40
Air intake port
Focus ring
(page 22)
Ambient Luminance Sensor (ALS)
(page 30)
Remote control signal receptor
(page 23)
Indicators
 POWER LOCK indicator (page 21)
 POWER indicator (page 21)
 LAMP indicator (page 39)
 TEMP indicator (page 39) 
						

							Preparation
About Your Projector
ENGLISH - 13
JBack and bottom view
NOTE:
• Do not cover the ventilation openings or place anything within 50 cm (20) of them as this may cause damage or injury.
• When a cable is connected to the VARIABLE AUDIO OUT, the built-in speaker will be disabled.
S-VIDEO IN
Connect a S-VIDEO signal cable.
VIDEO IN
Connect an RCA composite video 
cable.
COMPUTER1 IN
Connect a computer or YP
BPR 
signal cable.
COMPUTER2 IN/1 OUT
Connect a computer or YP
BPR 
signal cable. Select INPUT or 
OUTPUT in menu. (page 34)
SERIAL
See “Serial terminal” on page 45.AUDIO IN
Connect audio cables for inputting 
audio signal corresponding to 
VIDEO IN, S-VIDEO IN.
COMPUTER AUDIO IN
Connect audio cables for inputting 
audio signals corresponding to 
COMPUTER1 IN and/or 
COMPUTER2 IN/1 OUT.
VARIABLE AUDIO OUT
Connect an audio cables for 
outputting audio signals to the 
connected equipment.
AC IN
Connect the power cord to supply 
electronic power to the projector. 
(page 18)
Air filter compartment
(page 40)Font leg adjusters and leg adjuster buttons
(page 16)
Speaker 
Burglar hook port
Attach a commercial burglar 
prevention cable.
Security lock
Attach the commercial shackle lock, 
manufactured by Kensington, to 
protect your projector. Compatible 
with the Kensington MicroSaver 
Security System.
Air exhaust port
Heated air comes out of this 
opening.
Air intake port
Lamp unit compartment
(page 41) 
						

							Preparation
About Your Projector
ENGLISH - 14
Battery compartment
1. Press the tab and lift up the cover.
2. Insert the batteries according to the polarity diagram 
indicated inside.
Top view
(page 23)
Attaching a hand 
strap
You can attach a favorite strap on 
to the remote control.
Remote control
POWER button
Switch between stand-by 
mode and projection mode. 
(page 19/page 20)
INPUT SELECT buttons
Switch the required input 
signal button to select.
 The WIRELESS button is 
only for PT-LB80NTU/
PT-LB75NTU.
 See CD-ROM contents.  The PAGE buttons are only 
for PT-LB80NTU/
PT-LB75NTU.
 See CD-ROM contents.
Display the main menu. 
(page 27)
Navigate through the 
menus with FGIH, and 
activate the menu item with 
ENTER button. (page 27)
Reset some of the settings to 
the factory default settings. 
(page 24)Turn off the projection 
temporarily. (page 24)
 The MULTI-LIVE button 
is only for PT-LB80NTU/
PT-LB75NTU.
 See CD-ROM contents.
Control to adjust the 
volume of the speaker. 
(page 25)
Return to the previous menu. 
(page 27)
Capture the projected image 
as a frozen picture. (page 24)Detect the input signal and the 
setting of POSITION, DOT 
CLOCK and CLOCK PHASE 
in POSITION menu will be 
adjusted automatically for 
COMPUTER signals. (page 23)
 The COMPUTER SEARCH 
button is only for 
PT-LB80NTU/
PT-LB75NTU. 
 See CD-ROM contents.
Control to change the 
scale by means of digital 
zoom. (page 26)
Assign a useful function for 
shortcut. (page 25)
Display the frozen image 
while the display of 
subsequent images 
continues. (page 25)
Remote control signal 
emitters
NOTE:
• Do not drop the remote control.
• Avoid contact with liquids or moisture.
• Use manganese batteries or alkaline batteries with the remote control.
• Do not attempt to modify or disassemble the remote control. Contact an Authorized Service Center for repairs.
• Do not keep pressing the remote control buttons as this may shorten battery life.
• See “Remote control operation” on page 23. 
						

							Getting Started
ENGLISH - 15
Setting up
You can adjust the projection size with 2.0x zoom lens. Calculate and define the throw distance as follows.
* All measurements above are approximate and may differ slightly from the actual measurements.
JCalculation methods for screen dimensions
You can calculate more detailed screen dimension from the screen diagonal.
 Screen width (SW) and screen height (SH)
SW (m) = SD () x 0.0203 SH (m) = SD () x 0.0152
 Minimum distance (LW) and maximum distance (LT)
PT-LB80NTU: LW (m) = 0.0296 x SD () - 0.039 LT (m) = 0.0358 x SD () - 0.047
PT-LB75NTU: LW (m) = 0.0292 x SD () - 0.036 LT (m) = 0.0351 x SD () - 0.044
* The results above are approximate and may differ slightly from the actual measurements.
Screen size and throw distance
Projection size
(4 : 3)Throw distance (L)
PT-LB80NTU / PT-LB80UThrow distance (L)
PT-LB75NTU / PT-LB75U
Screen diagonal 
(SD)Minimum distance 
(LW)Maximum distance 
(LT)Minimum distance 
(LW)Maximum distance 
(LT)
33 (0.84 m) 1.1 m  (37) 1.1 m  (37)
40 (1.02 m) 1.1 m  (37) 1.4 m  (47) 1.1 m  (37) 1.4 m  (47)
50 (1.27 m) 1.4 m  (47) 1.7 m  (56) 1.4 m  (47) 1.7 m  (56)
60  (1.52 m) 1.7 m  (56) 2.1 m  (610) 1.7 m  (56) 2.1 m  (610)
70 (1.78 m) 2.0 m  (66) 2.5 m  (82) 2.0 m  (66) 2.4 m  (710)
80 (2.03 m) 2.3 m  (76) 2.8 m  (92) 2.3 m  (76) 2.8 m  (92)
90  (2.29 m) 2.6 m (86) 3.2 m (105) 2.6 m (86) 3.1 m (102)
100 (2.54 m) 2.9 m (96) 3.5 m (115) 2.9 m (96) 3.5 m (115)
120 (3.05 m) 3.5 m (115) 4.2 m (139) 3.5 m (115) 4.2 m (139)
150 (3.81 m) 4.4 m (145) 5.3 m (174) 4.3 m (141) 5.2 m (17)
200 (5.08 m) 5.9 m (194) 7.1 m (233) 5.8 m (19) 7.0 m (2211)
250 (6.35 m) 7.4 m (243) 8.9 m (292) 7.3 m (2311) 8.7 m (286)
300 (7.62 m) 8.8 m (2810) 10.7 m (351) 8.7 m (286) 10.5 m (345)
NOTE:
• See “Screen size and throw distance for 16:9 aspect ratio” on page 47.
• Do not use the projector at a raised or a horizontally tilted position as it may cause 
malfunction of the projector.
• You can tilt the projector body approximately ± 30° vertically. Overtilting may result in 
shortening the component’s life.
• For the best quality of the projection image, install a screen where sun light or room light 
does not shine directly onto the screen. Close window shades or curtains to block the lights.
88.6
SD
SW
SH
Screen
Projected image 
						

							Getting Started
Setting up
ENGLISH - 16
You can use the projector with any of the following 4 projection methods. To set the desired method in the projector, 
See “INSTALLATION” on page 35.
You can adjust the projection angle in the vertical direction by pressing the leg adjuster buttons.
See “Positioning the image” on page 22.
Projection method
JSetting on a desk/floor and 
projecting from front JSetting on a desk/floor and 
projecting from rear
INSTALLATION: FRONT/DESKINSTALLATION: REAR/DESK
JMounting in the ceiling and 
projecting from frontJMounting in the ceiling and 
projecting from rear
INSTALLATION: FRONT/CEILINGINSTALLATION: REAR/CEILING
NOTE:
• A translucent screen is required for rear projection.
• When mounting the projector in the ceiling, the optional ceiling mount bracket (ET-PKB80) is required.
Front leg adjusters and throwing angle
NOTE:
• Heated air comes out of the air exhaust port. Do not touch the air exhaust port directly.
• If keystone distortion occurs, see “KEYSTONE” on page 32. 
						

							Getting Started
ENGLISH - 17
Connections
 Read and follow the operating and connecting instructions of each peripheral device.
 The peripheral devices must be turned off.
 Prepare the connecting cables that match with the projector and peripheral device terminals.
 If the input signal is affected by signal jitter, the projected image may have poor image quality and timebase 
correction is effective.
 Confirm the type of video signals. See “List of compatible signals” on page 44.
 When you connect more than one AV equipment, switch the audio connection manually.
JConnecting with VIDEO IN/S-VIDEO IN
Before connection to the projector
Connecting example: AV equipment
Connecting example: Computers
NOTE:
• When COMPUTER2 SELECT in the OPTION menu is set to OUTPUT, do not connect any input signals.
• See CD-ROM contents for the wireless connection. (PT-LB80NTU/PT-LB75NTU only)
DVD player
Audio system To S-VIDEO output
Video player
To video output or 
audio output
OR
ComputersMonitor
Audio system
RGB signal cable
Serial cable 
						

							ENGLISH - 18
Basic Operation
Switching the projector on/off
JConnecting
1. Make sure the shape of the power plug and the 
AC IN terminal on the back of the projector match, 
then push the plug all the way in.
2. Align the side of the power cord secure lock with 
the side guide rail of the AC IN terminal of the 
projector and slide it in.
3. Place the latch to the latch catcher and press until 
it clicks.
4. Connect the power cord to a wall outlet.
5. The POWER and POWER LOCK indicators light 
in red and the projector stays in standby mode.
JDirect power on function
If the DIRECT POWER ON in OPTION menu is set 
to ON, connect the power cord to a wall outlet and 
the projection will start even when the control 
panel is disabled or the POWER button is locked. 
See “DIRECT POWER ON” on page 35.
If the DIRECT POWER ON is set to OFF, the 
projector will be at the same mode as last 
unplugged, standby mode or projection mode.
JDisconnecting
1. Unplug the power cord from the wall outlet.
2. Depress the latch and slide the cover off.
3. Slide the power cord secure lock up along the side 
guide rail and remove.
4. Hold the plug and unplug the power cord from the 
AC IN terminal on the back of the projector.
 POWER indicator lights in orange if the internal 
cooling fan is still operating by internal power supply.
JDirect power off function
You can switch off the electric power supply any 
time by unplugging the power plug from the wall 
outlet or by switching off the main power. The 
internal lamp cooling fan keeps operating by the 
internal power supply, and stops automatically 
when cooled enough.
Power cord
Rail guide
Latch
Latch
Rail guide
NOTE:
• Do not use other than a provided power cord.
• Ensure all the input devices are connected and turned off before connecting the power cord.
• Do not force the connector as this may damage the projector and/or the power cord.
• Dirt or dust build-up around plugs may cause fire or electrical hazards.
• Switch off the power to the projector when not in use.
• If the projector is switched on again while the internal cooling fan is still operating by the internal power supply, it may take 
a while to start the projection.
• If the projector is switched on again while the internal cooling fan is still operating by the internal power supply, it may take 
a while to start the projection.
• Do not put the projector into the carrying bag with the POWER indicator lit. 
						

							Basic Operation
Switching the projector on/off
ENGLISH - 19
Before switching on the projector, make sure the power cord and all the other devices are connected correctly.
See “Connections” on page 17 and “Power cord” on page 18.
QBy control panel operation
Make sure CONTROL PANEL in OPTION menu is 
set to VALID. The POWER button is locked to 
prevent malfunction and the POWER LOCK 
indicator lights in red.
1. Press the RELEASE button.
 The POWER LOCK indicator goes off.
 Without any operation in 10 seconds, the 
POWER button will be locked again.
2. Press the POWER button in 10 seconds.
 The POWER button beeps once.
3. The POWER indicator flashes in green several 
times.
4. The POWER indicator lights in green and displays 
the startup logo for 30 seconds.
 When the STARTUP LOGO in OPTION menu is set 
to OFF, the startup logo will not be displayed. See 
“STARTUP LOGO” on page 34.
QBy remote control operation
1. Press the POWER button.
2. The POWER indicator flashes in green several 
times.
3. The POWER indicator lights in green and displays 
the startup logo for 30 seconds.
 When the STARTUP LOGO in OPTION menu is set 
to OFF, the startup logo will not be displayed. See 
“STARTUP LOGO” on page 34.
QBy direct power on function
You can switch on the projector by connecting the 
power cord. See “Direct power on function” on 
page 18.
Switching on the projector
FUNCTIONMENURETURNINPUT SELECTRELEASERELEASE
ïúçôçûð
ï1ð ï1ð
ïùð
(2 - 3)
(1)
NOTE:
• When starting up the projector, some small rattling or tinkling sound may be heard, or the display may flicker for the 
characteristics of the lamp. Those are normal and will not affect the performance of the projector.
• When the internal cooling fan is operating, some, operational sound may be heard. The loudness of the operational sound 
depends on the external temperature.
• If the projector is switched on again while the internal cooling fan is still operating by the internal power supply, it may take 
a while to start the projection.
• Operating the control panel buttons with covered hand, such as plastered or gloved, may result in fail. 
						

							Basic Operation
Switching the projector on/off
ENGLISH - 20
JBy control panel operation
Make sure the CONTROL PANEL setting in 
OPTION menu is set to VALID.
1. Press the POWER button.
 The confirmation screen will be displayed.
 Without any operation for 10 seconds or press any 
button other than the POWER button, the 
confirmation screen will go off and return to the 
projection.
2. Press the POWER button again in 10 seconds.
3. The POWER indicator will flash in orange.
  The projector is cooling the lamp.
4. The POWER and POWER LOCK indicator light 
red.
JBy remote control operation
1. Press the POWER button.
 The confirmation screen will be displayed.
 Without any operation for 10 seconds or press any 
button other than the POWER button, the 
confirmation screen will go off and return to the 
projection.
2. Press the POWER button again in 10 seconds.
3. The POWER indicator will flash in orange.
  The projector is cooling the lamp.
4. The POWER and POWER LOCK indicator light 
red.
JBy direct power off function
You can switch off the projector by disconnecting 
the power cord. See “Direct power off function” on 
page 18.
Switching off the projector
FUNCTIONMENURETURNINPUT SELECTRELEASERELEASE
ïûð ï4ð
ïøçôçúð
(3 - 4) (4)
(1 - 2)
NOTE:
• You can switch off the power without displaying the confirmation screen by pressing the POWER button for longer than 
0.5 second.
• When the internal cooling fan is operating, some, operational sound may be heard. The loudness of the operational sound 
depends on the external temperature.
• If the projector is switched on again while the internal cooling fan is still operating by the internal power supply, it may take 
a while to start the projection.
• Operating the control panel buttons with covered hand, such as plastered or gloved hand, may result in fail.