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

							Care and Replacement
ENGLISH - 41
Maintenance
The lamp unit, ET-LAB80 is consumable and you must replace it regularly. It is recommended that a qualified 
technician carry the lamp unit replacement and consult with an Authorized Service Center.
JWhen to replace the Lamp unit
When the lamp is consumed, the brightness may decrease over time. 3 000 hours of use is the replacing 
timing as rough guided, and that might be shortened by the usage conditions, characteristics of the lamp unit 
or environmental conditions. You can find the duration of usage time by checking LAMP RUNTIME in OPTION 
menu.
JBefore replacing the lamp unit
 Contact an Authorized Service Center to purchase a replacement lamp unit (ET-LAB80).
 Switch off the projector and disconnect the power plug from the wall outlet.
 Wait for more than 1 hour and make sure the lamp unit and the surroundings are cooled enough.
 Prepare a Phillips-head screwdriver.
 When the projector is mounted in the ceiling, do not work directly under the projector or put your face closer 
to the projector.
Replacing the Lamp unit
IndicationOn screen
LAMP indicator
Over 2 800 hoursDisplays “REPLACE LAMP” on the upper 
left of the screen for 30 seconds.
Illuminates red.
Over 3 000 hoursDisplays “REPLACE LAMP” on the upper 
left of the screen, and it will stay until you 
respond. Press any button to clear the 
screen.
NOTE:
• The guide times, 2 800 and 3 000 hours, are rough estimates based on certain conditions and is not a guaranteed time.
• For more information about the lamp unit and its guaranteed time, see the instructions which is provided with the lamp 
unit.
• Do not use a lamp unit over 3 000 hours. Failure to observe this may result in explosion of the lamp.
NOTE:
• Prior to replacing the lamp unit, allow it to cool down to prevent the risk of burns, damage and other hazards.
• Do not attempt replacement with an unauthorized lamp unit.
REPLACE LAMP 
						

							Maintenance
Care and Replacement
ENGLISH - 42
JReplacement procedure
QRemoving and replacing the lamp unit
1. Use a Phillips-head screwdriver to loosen the 2 
lamp unit cover fixing screws on the back of the 
projector until the screws turn freely, and remove 
the lamp unit cover.
2. Use a Phillips-head screwdriver to loosen the 3 
lamp unit fixing screws.3. Pull the used lamp unit gently from the projector.
 Grip the handle and keep the lamp unit paralleled 
when you remove the lamp. Some parts of the lamp 
unit are sharpened and may cause injury.
4. Replace the new lamp unit in correct direction.
5. Press in the lamp unit until it clicks and make sure 
the unit is installed securely.
6. Tighten the 3 lamp unit fixing screws securely with 
a Phillips-head screwdriver.
7. Attach the lamp unit cover and tighten the 2 lamp 
unit cover fixing screws securely with a Phillips-
head screwdriver.
QResetting the LAMP RUNTIME
1. Connect the power cord to a wall outlet, and switch 
on the projector.
2. Press the MENU button to display the menu.
3. Press F G to select OPTION and press ENTER.
4. Press F G to select LAMP RUNTIME.5. Press and hold the ENTER button for 
approximately 3 seconds.
6. The confirmation screen will be displayed and 
select OK.
7. Reset the projector by unplugging and plug again 
the power cord.
8. Display the LAMP RUNTIME menu again and 
confirm the duration of time is reset to “0 H”.
Lamp unit cover fixing screwsLamp unit cover
Handles
Lamp unit 
fixing screws
Lamp unit 
fixing screws
Press here
NOTE:
• Be sure to install the lamp unit and attach the lamp unit cover securely. If they are not installed securely, it may cause the 
protection circuit to operate so that the power cannot be turned on.
• Do not switch the power on while the lamp unit cover removed.
• Handle the lamp unit with special care as that is a glass product. Dropping or giving a shock may cause burst or damage.
LOW
NORMAL
1820H LAMP POWER ALTITUDE
LAMP RUNTIME 
						

							ENGLISH - 43
Maintenance
Troubleshooting
Should any problem persist, contact your dealer.
ProblemCauseReference 
page
Power does not turn on.
 The power cord may not be connected securely.
 No electric supply at the wall outlet.
 TEMP indicator is lit or flashes.
 LAMP indicator is lit or flashes.
 The lamp unit cover has not been securely installed.
 The circuit breakers have tripped.18
19
39
39
42
-
No picture appears.
 The signal input source may not be connected to a terminal properly.
 The input selection setting may not be correct.
 The BRIGHTNESS adjustment setting may be at the minimum setting.
 The signal input source may not be operating properly.
 The AV MUTE function may be in use.17
24
30
-
24
The picture is fuzzy.
 The lens focus may not have been set correctly.
 The projector may not be at the correct distance from the screen.
 The lens may be dirty.
 The projector may be tilted too much.22
15
40
15/16
The color is pale or grayish.
 COLOR or TINT adjustment may be incorrect.
 The input source which is connected to the projector may not be 
adjusted correctly.30
28
No sound can be heard 
from the internal speaker. The audio signal source may not be connected properly.
 A cable may be connected to the VARIABLE AUDIO OUT terminal.
 The volume adjustment may be at the lowest possible setting.17
13
25
The control buttons of the 
projector do not operate.
 CONTROL PANEL in OPTION menu is invalidated. If you have a loss 
of the remote control while the CONTROL PANEL is invalidated, 
press and hold the MENU button for 2 seconds with pressing the 
ENTER button.35
The Remote control does 
not operate.
 The batteries may be weak.
 The batteries may not have been inserted correctly.
 The remote control signal receptor on the projector may be 
obstructed.
 The remote control unit may be out of the operation range.
 The remote control is under the strong light such as fluorescent.-
14
23
23
23
The picture does not 
display correctly. The signal format (TV-SYSTEM) may not have been set correctly.
 There may be a problem with the VCR or other signal source.
 A signal which is not compatible with the projector is being input.31
-
44
Picture from a computer 
does not appear.
 The cable may be longer than the optional cable.
 The external video output from a laptop computer may not be correct. 
(You may be able to change the external output settings by pressing 
the [Fn] + [F3] or [Fn] + [F10] keys simultaneously. The actual method 
varies depending on the type of computer; refer to the documentation 
provided with your computer for further details.)
 COMPUTER2 SELECT setting in OPTION menu is not correct.-
46
34 
						

							ENGLISH - 44
Appendix
Technical Information
List of compatible signals
Mode
Display 
resolution 
(dots)
*1
*1. The “i” appearing after the resolution indicates an interlaced signal.
Scanning 
frequencyDot clock 
frequency
(MHz)Picture 
quality
*2
*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.Terminals
H (kHz)V (Hz)
NTSC/NTSC 4.43/
PA L - M / PA L 6 0720 x 480i 15.7 59.9 - A
VIDEO/S-VIDEO
PAL/PAL-N/SECAM 720 x 576i 15.6 50.0 - A
525i (480i) 720 x 480i 15.7 59.9 13.5 A
COMPUTER/YPBPR 625i (576i) 720 x 576i 15.6 50.0 13.5 A
525p (480p) 720 x 483 31.5 59.9 27.0 A
625p (576p) 720 x 576 31.3 50.0 27.0 A
1 125  (1 080)/60i 1 920 x 1 080i 33.8 60.0 74.3 A
1 125  (1 080)/50i 1 920 x 1 080i 28.1 50.0 74.3 A
750 (720)/60p 1 280 x 720 45.0 60.0 74.3 A
COMPUTER/YPBPR
*3
*3. Displays 750 (720)/60p or 750 (720)/50p signals through COMPUTER terminals as WIDE750 (720). Press the AUTO SETUP button 
and adjust the image.750 (720)/50p 1 280 x 720 37.5 50.0 74.3 A
VESA 640 x 400 31.5 70.1 25.2 A
COMPUTER 640 x 400 37.9 85.1 31.5 A
VGA 640 x 480 31.5 59.9 25.2 A
640 x 480 35.0 66.7 30.2 A
640 x 480 37.9 72.8 31.5 A
640 x 480 37.5 75.0 31.5 A
640 x 480 43.3 85.0 36.0 A
SVGA 800 x 600 35.2 56.3 36.0 A
800 x 600 37.9 60.3 40.0 A
800 x 600 48.1 72.2 50.0 A
800 x 600 46.9 75.0 49.5 A
800 x 600 53.7 85.1 56.3 A
MAC 832 x 624 49.7 74.6 57.3 A
XGA 1 024 x 768 39.6 50.1 51.9 AA
1 024 x 768 48.4 60.0 65.0 AA
1 024 x 768 56.5 70.1 75.0 AA
1 024 x 768 60.0 75.0 78.8 AA
1 024 x 768 68.7 85.0 94.5 AA
MXGA 1 152 x 864 64.0 71.2 94.2 A
1 152 x 864 67.5 74.9 108.0 A
1 152 x 864 77.1 85.0 119.7 B
MAC 1 152 x 870 68.7 75.1 100.0 A
MSXGA 1 280 x 960 60.0 60.0 108.0 A
SXGA 1 280 x 1 024 64.0 60.0 108.0 A
1 280 x 1 024 80.0 75.0 135.0 B
1 280 x 1 024 91.1 85.0 157.5 B
SXGA60+ 1 400 x 1 050 64.0 60.0 108.0 A
1 400 x 1 050 65.1 59.9 122.4 B
UXGA 1 600 x 1 200 75.0 60.0 162.0 B
WIDE750 (720) 1 280 x 720 44.8 59.9 74.5 A
1 280 x 720 37.1 49.8 60.5 A
WXGA768 1 280 x 768 39.6 49.9 65.3 A
1 280 x 768 47.8 59.9 79.5 A
WXGA800 1 280 x 800 41.3 50.0 68.0 A
1 280 x 800 49.1 60.2 69.1 A
1 280 x 800 49.7 59.8 83.5 A
WXGA+ 1 440 x 900 55.9 59.9 106.5 A
WSXGA+ 1 680 x 1 050 65.3 60.0 146.3 B
WUXGA 1 920 x 1 200 74.6 59.9 193.3 B 
						

							Technical Information
ENGLISH - 45
Appendix
The serial connector which is on the connector panel of the projector conforms to the RS-232C interface 
specification, so that the projector can be controlled by a personal computer which is connected to this connecter.
JConnection
JPin assignments and signal names
JCommunication settings
JBasic format
 The projector can not receive any command for 10 seconds after the lamp is switched on. Wait 10 seconds 
before sending the command.
 If sending multiple commands, check that a response has been received from the projector for one 
command before sending the next command.
 When a command which does not require parameters to be sent, the colon (:) is not required.
 If an incorrect command is sent from the personal computer, the ER401 command will be sent from the 
projector to the personal computer.
Serial terminal
Pin No.Signal nameContents
ANC
BTXD Transmitted data
CRXD Received data
DNC
EGND Earth
FNC
GRTS
Connected internally
HCTS
INC
Signal levelRS-232CCharacter length8bits
Sync. methodAsynchronousStop bit1bit
Baud rate9600bpsX parameterNone
ParityNoneS parameterNone
The data streaming from the computer will 
start with STX, and proceed to Command, 
Parameter and end with ETX. You can 
add the required parameter.
D-sub 9 pin (male)
ComputerSerial terminal (female)
STX Command : Parameter ETX
Star t b yt e
(02h)1byte End
(03h) 3bytes1byte - 
4bytes 
						

							Appendix
Technical Information
ENGLISH - 46
JCable specifications
(When connected to a personal computer)
JControl commands
You can switch the signals which to output from the COMPUTER1 OUT terminal by pressing the computer key 
command. The key commands are depend on the manufactures. If you select the computer terminals which has no 
signals while the INPUT GUIDE is set to DETAILED, the computer connection guidance will be displayed. 
CommandControl contentsRemarks
PONPower onIn standby mode, all commands other than the PON command are 
ignored.
 The PON command is ignored during lamp ON control.
POFPower offIf a PON command is received while the cooling fan is operating after the 
lamp has switched off, the lamp is not turned back on again straight away 
in order to protect the lamp.
AV LVo l u m eParameter
000 - 063 (Adjustment value 0 - 63)
IISInputParameter:
VID = VIDEO
RG1 = COMPUTER1SVD = S-VIDEO
RG2 = COMPUTER2
NWP = WIRELESS
(PT-LB80NTU/PT-LB75NTU only)
Q$SLamp condition 
queryCall back
0 = Standby
1 = Lamp on control active2 = Lamp on
3 = Lamp off control active
OSHShutterTurning off the projection temporarily.
Send the command to switch between on and off.
Do not send the command consecutively.
Computer connection guidance
ManufacturerKey commandManufacturerKey commandManufacturerKey command
Panasonic
NEC + TOSHIBA
SHARP
HP + IBM
SONY + 
Apple
FUJITSU
 + EPSON
DELL + Other
 + 
NOTE:
• The computer connection guidance will disappear after 5 minutes.
• Please refer the instructions which provided with the computers for more detailed information.
NC
NC
NC
NCNC
NC
NC
NC
Projector PC (DTE) 
						

							Technical Information
ENGLISH - 47
Appendix
* 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 0.0221 SH (m) = SD () x 0.0125
 Minimum distance (LW) and maximum distance (LT)
PT-LB80NTU: LW (m) = 0.0321 x SD () - 0.04 LT (m) = 0.0388 x SD () - 0.06
PT-LB75NTU: LW (m) = 0.0318 x SD () - 0.022 LT (m) = 0.0383 x SD () - 0.046
* The results above are approximate and may differ slightly from the actual measurements.
Screen size and throw distance for 16:9 aspect ratio
Projection size
(16 : 9)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) 1.2 m  (311) 1.2 m  (311)
40 (1.02 m) 1.2 m  (311) 1.5 m  (411) 1.3 m  (43) 1.5 m  (411)
50 (1.27 m) 1.6 m  (52) 1.9 m  (62) 1.6 m  (52) 1.9 m  (62)
60  (1.52 m) 1.9 m  (62) 2.3 m  (76) 1.9 m  (62) 2.3 m  (76)
70 (1.78 m) 2.2 m  (72) 2.7 m  (810) 2.2 m  (72) 2.6 m  (86)
80 (2.03 m) 2.5 m  (82) 3.0 m  (910) 2.5 m  (82) 3.0 m  (910)
90  (2.29 m) 2.8 m (92) 3.4 m (111) 2.8 m (92) 3.4 m (111)
100 (2.54 m) 3.2 m (105) 3.8 m (125) 3.2 m (105) 3.8 m (125)
120 (3.05 m) 3.8 m (125) 4.6 m (151) 3.8 m (125) 4.6 m (151)
150 (3.81 m) 4.8 m (158) 5.8 m (19) 4.7 m (155) 5.7 m (188)
200 (5.08 m) 6.4 m (2011) 7.7 m (253) 6.3 m (208) 7.6 m (2411)
250 (6.35 m) 8.0 m (262) 9.6 m (315) 7.9 m (2511) 9.5 m (312)
300 (7.62 m) 9.6 m (315) 11.6 m (38) 9.5 m (312) 11.4 m (374) 
						

							Appendix
Technical Information
ENGLISH - 48
Specifications
Power supplyAC 100 - 240 V 50 Hz/60 Hz
Power consumption300 W
During standby (when fan is stopped): 4 W
Amps3.5 A - 1.2 A
LCD panel
Panel size (diagonal)0.63 type (16.00 mm)
Aspect ratio4 : 3
Display method3 transparent LCD panels (RGB)
Drive methodActive matrix method
Pixels786 432 (1 024 x 768) x 3 panels
LensManual zoom (1.2x)/Manual focus
F 1.6 - 1.9, f 18.8 mm - 22.6 mm (PT-LB80NTU /PT-LB80U)
F 1.7 - 1.9, f 18.5 mm - 22.2 mm (PT-LB75NTU / PT-LB75U)
Optical axis8:1 fixed (PT-LB80NTU/PT-LB80U)
5:1 fixed (PT-LB75NTU / PT-LB75U)(page 15)
LampUHM lamp (220 W)
Luminosity*1
*1. Measurement, measuring conditions and method of notation all comply with ISO21118 international standards.3 200 lm (PT-LB80NTU /PT-LB80U)
2 500 lm (PT-LB75NTU / PT-LB75U)
Operating environmentTemperature0°C - 40°C (32°F - 104°F)
When the ALTITUDE (page 35) 
is set to HIGH: 0 °C - 35 °C 
(32 °F - 95 °F)
Humidity 20% - 80% (no condensation)
Scanning 
frequency
*2
(for RGB signal)
*2. See “List of compatible signals” on page 44 for available signals.
Horizontal scanning 
frequency15 kHz - 91 kHz
Vertical scanning 
frequency50 Hz - 85 Hz
Dot clock frequencyLess than 110 MHz
COMPONENT (YPBPR) signals525i (480i), 525p (480p), 625i (576i), 625p (576p), 750 (720)/60p, 
750 (720)/50p, 1 125 (1 080)/60i, 1 125 (1 080)/50i
Color system7 (NTSC/NTSC 4.43/PAL/PAL-M/PAL-N/PAL60/SECAM)
Projection size33 - 300 (838.2 mm - 7 620 mm)
Throw distance1.1 m - 11.6 m (37 - 38)
Screen aspect ratio4 : 3
InstallationFRONT/DESK, FRONT/CEILING, REAR/DESK, REAR/CEILING 
(Menu selection method)
Speaker1 piece 4 cm  x 2 cm (1 - 9/16 x - 25/32) 
Max. useable volume output1.0 W 
						

							Technical Information
ENGLISH - 49
Appendix
Terminals
S-VIDEO INSingle - line, Mini DIN 4p
Y: 1.0 V [p-p], C: 0.286 V [p-p], 75Ω
VIDEO INSingle - line, RCA pin jack
1.0 V [p-p], 75Ω
COMPUTERSingle - line, D - sub HD 15-pin (female)
 RGB input/output
R.G.B.:
0.7 V [p-p], 75 Ω
G SYNC:
1.0 V [p-p], 75 Ω
HD, VD/SYNC: TTL high impedance, automatic 
positive/negative polarity 
compatible
 YPBPR/YPBCB input/output
Y:
1.0 V [p-p] (include sync) 75Ω
PB/CB, PR/CR:
0.7 V [p-p] 75Ω
AUDIO INSingle - line, 0.5V [rms], RCA pin jack x 2 (L - R)
COMPUTER AUDIO INSingle - line, 0.5V [rms], M3 jack (Stereo MINI)
VARIABLE AUDIO 
OUTSingle - line, 0.5V [rms], M3 jack (Stereo MINI)
Monitor output/stereo compatible
0 V [rms] - 2.0 V [rms] (variable)
SERIALD-sub 9-pin RS-232C compatible
Wireless LAN
(PT-LB80NTU/
PT-LB75NTU 
only)CompatibleIEEE802.11b/IEEE802.11g (Wireless LAN standard protocol)
Wireless channelIEEE802.11b/IEEE802.11g: 1 - 13 channels
Distance30 m (985) Depends on the usage environment
CabinetMoulded plastic (PC+ABS)
DimensionsWidth 368 mm (14 - 15/32)
Height 88 mm (3 - 13/16)
Length233 mm (9 - 5/32) (not including 
surface projection parts)
Weight3 kg (6.6 lbs.)
CertificationsUL60950-1
FCC Class BC-UL
ICES-003
Remote control
Power supply3 V DC (AA battery x 2)
Operating rangeApprox. 15 m (492) (when operated directly in front of signal 
receptor)
Weight117 g (4.2 ozs.) (including batteries)
DimensionsWidth 48 mm (1 - 7/8)
Length 163 mm (6 - 13/32)
Height24.5 mm (-15/16) (not including 
surface projection parts)
OptionsCeiling bracketET-PKB80 
						

							Appendix
Technical Information
ENGLISH - 50
 VGA and XGA are trademarks of International Business Machines Corporation.
 S-VGA is a registered trademark of the Video Electronics Standards Association.
 HDMI, the HDMI logo and High-Definition Multimedia Interface are trademarks or registered trademarks of 
HDMI Licensing LLC.
 The font used in the on-screen displays is a Ricoh bitmap font, which is manufactured and sold by Ricoh 
Company, Ltd. 
All other trademarks are the property of the various trademark owners.
Dimensions
Trademark acknowledgements
233 
(9 - 5/32)
973 - 13/16883 - 7/16
933 - 21/32  - 3/16   5
4
- 5/32
9
- 11/32 2 - 1/8
   54.5
3
- 3/32
368 (14 - 15/32)
3 - 15/32
88.6
103.6
4 - 1/16194.47 - 5/8
Unit: mm