Panasonic LCD Projector PT-L785U Operating Instructions

ENGLISH-51
Adjustments and settings
Setting up the security function
This projector is equipped with a security function. A password input screen
can be displayed, or a company URL can be set up and displayed at the
bottom of the projected image. A logo also can be displayed before projection.
Press the Ior Hbutton on the
projector or remote control unit to
select “SECURITY”, then press the
Gbutton.
(When you use the “SECURITY”
function for the first time)
Press the F, H, G, I, F, H, G
and Ibuttons in...

52-ENGLISH
TEXT DISPLAY
You can set text to be displayed at
the bottom of the projected image at
all times.
ON
“TEXT DISPLAY” is enabled.
OFF
“TEXT DISPLAY” is disabled.
CHANGE TEXT
The text which is displayed when
“TEXT DISPLAY” is set to “ON” can
be changed.
Press the ENTER button to display
the “CHANGE TEXT” screen.
#Press the F, G, Iand H
buttons to select the letters, then
press the ENTER button. 
(You can enter 20 letters
continuously.)

←
Moves cursor to left.
→
Moves cursor to right.
DELETE...

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Adjustments and settings
LOGO DISPLAY
A logo can be displayed before
projection.
ON
“LOGO DISPLAY” is enabled.
OFF
“LOGO DISPLAY” is disabled.
LOGO CLEAR
Captured logo data can be cleared.
Press the ENTER button to display
the confirmation screen, and then
select “OK”.
LOGO CAPTURE
A logo can be captured from the
picture being projected. Press the
ENTER button to display the
capture adjustment screen.
#Press the FGIand Hbuttons
to move the capturing frame to
the area you want to capture....

54-ENGLISH
When the TEMP indicator and the
LAMP indicator are illuminated
There are two indicators on the control panel of the projector which give
information about the operating condition of the projector. These indicators
illuminate or flash to warn you about problems that have occurred inside the
projector, so if you notice that one of the indicators is on, turn off the power
and check the table below for the cause of the problem.
Problem Indicator
display
The surrounding temperature or
the...

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Care and maintenance
Remedy
Problem Indicator
display
Flashing (red)
It is nearly time to
replace the lamp
unit.Illuminated (red)
An abnormality has been detected in the lamp
circuit.
BDoes “REPLACE
LAMP” appear on
the screen after
the projector is
turned on?
BThis occurs when
the operation time
for the lamp unit is
nearing 1 350
hours (when
“LAMP POWER”
has been set to
“HIGH”). Ask your
dealer or an
Authorized
Service Center to
replace the lamp
unit.
Possible
cause
BThe power may
have been...

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Cleaning and replacing the air filter
If the air filter becomes clogged with dust, the internal temperature of the
projector will rise, the TEMP indicator will illuminate and the projector’s
power will turn off (the TEMP indicator will flash after the power is turned off).
The air filter should be cleaned every 100 hours of use.
NOTE:
BPlace the projector on top of a
soft cloth so that it will not
become scratched.
NOTE:
BBe sure to install the air filter
before using the projector. If
the...

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Care and maintenance
Replacing the lamp unit
Warning
The lamp unit should only be
replaced by a qualified
technician.
When replacing the lamp, allow it
to cool for at least one hour
before handling it.
BThe lamp cover gets very hot,
and contact with it can cause
burns.
Notes on replacing the lamp
unit
BThe light generating lamp is
made of glass, so dropping it or
allowing it to hit hard objects may
cause it to burst. Be careful when
handling the lamp.
BDispose of the removed old lamp
with the...

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Lamp unit replacement procedure
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 1 350 hours
Remains displayed until
any button is pressed. More than 1 500 hours
NOTE:
BIf the lamp usage time has passed 1 500 hours (when “LAMP POWER”
has been set to “HIGH”), the projector will switch to standby mode after
approximately 10 minutes of operation. The steps )to 
.on the next...

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Care and maintenance
+Press the Gbutton and select
the “LAMP RUN TIME” by
pressing theForGbutton.
,Press and hold the ENTER
button for approximately 3
seconds.
The “LAMP TIME RESET” will be
displayed.
-Select “OK” by pressing the 
I
or H
button and press the
ENTER button.
This will reset the cumulative
usage time for the lamp unit to
zero. The lamp unit will
automatically shut off, and the
projector will go in the standby
mode. 'Close the air outlet port, and
then use a Phillips...

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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.BThe power cord may not be connected.
BThe MAIN POWER switch is turned off.
BThe main power supply is not being supplied to the
wall outlet.
BTEMP indicator is illuminated or flashing. 
BLAMP indicator is illuminated or...