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

Care and Replacement
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Maintenance
JBefore replacing the Lamp unit
 Disconnect the power cord plug from the wall outlet.
 Make sure the Lamp unit and the surroundings are cooled enough.
 Prepare a Phillips-head screwdriver.
 Contact an Authorised Service Center to purchase a replacement Lamp unit (ET-LAB50).
 When the projector is mounted in the ceiling, do not work directly under the projector or put your face closer 
to the projector.
JWhen to replace the Lamp unit
The Lamp unit is a...

Maintenance
Care and Replacement
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2. 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.
3. Use a Phillips screwdriver to loosen the two lamp unit cover 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.
4. Insert the new Lamp unit while making sure that the direction of insertion is correct, and then use a Phillips...

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Maintenance
Troubleshooting
Should any problem persist, contact your dealer.
ProblemCauseReference 
page
Power does not turn on.
 The Power cord may not be connected.
 No electric supply is 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.20
20
39
39
41
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No picture appears.
 The video signal input source may not be connected to a terminal 
properly.
 The input...

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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.
Resizing*3
*3....

Technical Information
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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 approximately 10 seconds after the lamp is switched on 
and for approximately 1 second after the cooling fan...

Appendix
Technical Information
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JCable specifications
(When connected to a personal computer)
JControl commands
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...

Technical Information
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Appendix
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. 
Computer connection guidance
ManufacturerKey commandManufacturerKey commandManufacturerKey command
Panasonic
NEC + TOSHIBA
SHARP
HP + IBM
SONY +...

Appendix
Technical Information
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Specifications
Power supplyAC 100 - 240 V 50 Hz/60 Hz
Power consumption240 W
During standby (when fan is stopped): 4 W
Amps2.8 A - 1.3 A
LCD panel
Panel size (diagonal)0.6 type (15.24 mm)
Aspect ratio4 : 3
Display method3 transparent LCD panels (RGB)
Drive methodActive matrix method
PixelsPT-LB51NTU/PT-LB51U: 786 432 (1 024 x 768) x 3 panels
PT-LB51SU: 480 000 (800 x 600) x 3 panels
LensManual zoom (1 - 1.2 x)/Manual focus
F 1.6 - 1.9, f 18.8 mm - 22.6 mm...

Technical Information
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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
COMPUTER1 INSingle - line, D - sub HD 15-pin (female)
  During RGB signals input
     R.G.B.
     G.SYNC0.7 V [p-p], 75 
Ω
1.0 V [p-p], 75 Ω
     HD, VDTTL high impedance, automatic 
positive/negative polarity compatible
  During YP
BPR signals input
     Y
1.0 V [p-p] (Including sync), 75 
Ω
     PB,PR0.7 V [p-p], 75 Ω...

Appendix
Technical Information
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Dimensions