E
NGLISH
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Care
and
maintenance
The buttons on
the projector do
not function.
The picture does
not display
correctly.
Picture from
computer does
not appear.
Problem
Possible cause
B
The “CONTROL KEY” may be set to “OFF”.
In order to set the “CONTROL KEY” to “ON”
without using the remote control unit, keep holding
down the ENTER button on the projector and press
the MENU button for more than 2 seconds.
B
The signal format (“TV-SYSTEM”) may not be set
correctly.
B
There may be a problem with the video tape or
other signal source.
B
A signal which is not compatible with the projector
may be being input.
B
The cable may be too long.
B
The external video output for the laptop computer
may not be set correctly.
(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, so refer to the
documentation provided with your computer for
further details.)
B
If an RGB INPUT indicator is turned off, the video
signals may not be output from the computer.
B
“RGB2 SELECT” in the “OPTION” menu is set to
“OUTPUT” when the signals are input to RGB2 IN /
RGB OUT connector.
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Before carrying out cleaning and maintenance, be
sure to disconnect the power cord plug from the
wall outlet.
Wipe the cabinet with a soft, dry cloth.
If the cabinet is particularly dirty, soak the cloth in water with a small amount of
neutral detergent in it, squeeze the cloth very well, and then wipe the cabinet.
After cleaning, wipe the cabinet dry with a dry cloth. If using a chemically-treated
cloth, read the instructions supplied with the cloth before use.
Do not wipe the lens with a cloth that is dusty or which produces lint.
If any dust or lint gets onto the lens, such dust or lint will be magnified and
projected onto the screen. Use a blower to clean any dust and lint from the
lens surface, or use a soft cloth to wipe off any dust or lint.
Cleaning and maintenance
Summary of Contents for PTL785U - LCD PROJECTOR UNIT
Page 87: ...FRANÇAIS 87 Others ...
