Panasonic LCD Projector PT-LC50U Operating Instructions

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Warning Indicators
This LCD Projector has a STATUS Code Display which calls 
your attention to problem conditions existing inside the LCD
Projector. The LCD Projector displays a status Code
Indication each time an internal problem is detected.
If any of the following indications appear in the STATUS Code
Display, immediately turn off the Power Button, and then see
the chart to determine a course of action.
Status Code Display Indications
Please wait one minute before turning the power...

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•Cooling fan 
malfunction.
• Misinstalled Air Filter
Unit or Lamp cover.
• Temperature Sensor
malfunction.
• Clogged air filter.
• Blocked air intake.
• The surrounding
temperature of the
place of use may be
too high.
• If the Lamp will not
light after turning on
the main power 2 or 3
times, the Lamp may
be damaged.
• Lamp Voltage is not
correct.
• Abnormal temperature
rise.
• Other causes.
• It is nearly time to
replace the Lamp Unit.
• The Lamp Unit must be
replaced. •
Take the...

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Cleaning the Air Filter
Air Filter
The air filter should be cleaned about every 100 hours. Also, 
clean the air filter if the  “A-0 ” is indicated in the STATUS Code
display.
Replace the filter when it is clogged or dirty even after
cleaning.
• Cleaning procedure  (Tools required: Vacuum Cleaner.)
1Set the POWER Button to OFF and unplug the power 
cord.
POWER Button
Air Filter unit
Indent2Remove the Air Filter unit 
Hold the indent on the Air
Filter unit with your hands and
pull the...

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•The LCD Projector power cannot be turned on unless the
Air Filter unit is correctly installed.
• Using with the air filter sponge removed will result in dirt
and dust being drawn in and lead to malfunction.
3Clean the Filter. 
Gently remove any accumulated
dust from Air Filter unit with your
vacuum cleaner.
4Replace the Air Filter unit.
Slide the Air Filter into the LCD
Projector so that the 
indentations of the filter and 
projector are aligned. Then,
press on the arrow mark until...

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Lamp replacement period
The LCD Projector lamp has a limited 
operating life of approximately 2 000
hours.
If lamp operation time exceeds 1 900
hours,  “L-1 ” is displayed as the STATUS
Code.
“ Lamp replacement is recommended. ”
will be displayed on-screen when
operation time reaches 1 900 hours.
Warning
Lamp Replacement
If the Lamp does not light and the LAMP 
STATUS Code is  “L-n ,”  If the Lamp will not light
after turning on the main power 2 or 3 times, the
Lamp may be damaged. If...

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In case lamp time reaches 2 000 
hours
The LCD Projector will shut itself OFF and 
the STATUS Code indication becomes  “L-0 ”.
• If the Lamp is not replaced, turning
POWER on will only cause the screen at
right to be displayed for 5 minutes.
Note
The lamp used as the light source eventually wears out. 
The service life of the light source lamp used on the
PT-LC50U is about 2 000 hours, but depending on the
individual lamp ’s properties and the usage conditions the
lamp may no longer...

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 RGB Signals that can be Input
The projection mode will be matched automatically to one of the 
modes which have been pre-set inside the Projector.
If a signal which differs greatly from any of the types listed below is
input, the picture image may not be displayed correctly, or a blue
background may be displayed.
Signals that can be Input
Personal Computer Signals
Display
mode name
Signal data
No. of dots Horizontal
frequency (kHz) Vertical
frequency
     (Hz) Dot clock
frequency...

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1 152 X 864 (70 Hz) 1 152 X 864 63.85 70.01 94.500
1 152 X 864 (75 Hz) 1 152 X 864 67.50 75.00 108.000
1 152 X 864 (85 Hz) 1 152 X 864 77.09 85.00 121.500
Macintosh 21˝1 152 X 870 68.68 75.06 100.000
1 280 X 960 (60 Hz) 1 280 X 960 60.00 60.00 108.000
1 280 X 960 (75 Hz) 1 280 X 960 75.00 75.00 126.000
1 280 X 1 024 (60 Hz)1 280 X 1 024 63.98 60.02 108.000
1 280 X 1 024 (75 Hz)1 280 X 1 024 79.98 75.03 135.000
480 i 664 X 485 15.73 29.97 12.650
480 p 720 X 483 31.47 59.94 27.000
720 p...

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Signals that can be Input
 Component Signals (YPBPR) that can be Input
Note
•
*
Changing the number of dots to be displayed to within
800 X 600 may cause a portion of information to be omitted, or 
the image quality to be degraded.
• DTV Format Signals are picture signals from a DVD or a digital
broadcast.
Display
mode name
Signal data
No. of dots Horizontal
frequency (kHz) Vertical
frequency
     (Hz) Dot clock
frequency      (MHz)
480 i 664 X 485 15.73 29.97 12.650
480 p 720 X 483...

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 S-VIDEO/VIDEO Signal that can be Input
3.58 
4.43 
3.58
4.43
3.58
4.25 or 4.41
AU TO
NTSC
NTSC4.43 PAL-MPA L
PAL-N
SECAM
Horizontal scanning frequency(kHz) Vertical scanning
frequency(Hz) Colour sub-carrier
frequency(MHz)
Selected automatically.
15.75
15.63 60.00 
50.00
Signal format
name
Signals that can be Input
Note
• NTSC and PAL-M have the same scanning frequencies
and color sub-carrier frequencies, but they have different 
color modulation methods. Because of this, if the...