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Epson PowerLite 7900p Projector
20 - Epson PowerLite 7900p Projector 9/04
Cleaning the Lens
Clean the lens whenever you notice dirt or dust on the surface.
❏ Use a canister of compressed air to remove dust.
❏ To remove dirt or smears on the lens, use lens-cleaning
paper. If necessary, moisten a soft cloth with lens cleaner
and gently wipe the lens surface.
Caution: Do not use glass cleaner to clean the lens.
Cleaning the Projector
Before you clean the case, first turn off the projector and
unplug the power cord.
❏ To remove dirt or dust, wipe the case with a soft, dry,
lint-free cloth.
❏ To remove stubborn dirt or stains, moisten a soft cloth with
water and a mild detergent. Then wipe the case.
❏ Do not use wax, alcohol, benzene, paint thinner, or other
chemical cleaning agents. These can damage the case.
When the P power light is flashing green,
the projector is warming up. Wait for the
image to appear.
When the P power light is green, the
projector is operating normally.
When the P power light is flashing orange,
the projector is cooling down. Do not
unplug it until the light stops flashing and
remains orange. If you want to turn it back
on, wait until the light stops flashing.
When the power and temperature lights
are flashing, the projector is getting too hot
and is in rapid cooling mode. You can
continue running it in this condition,
however, verify that the air filter is not
clogged. Clean or replace it as described on
page 21.
Make sure the room temperature is not
above 104 °F (40 °C) and there is plenty of
space around and under the projector for
ventilation.
When the power and temperature lights
are red, the projector has overheated,
which turns off the lamp automatically.
Wait about 5 minutes for the projector to
cool, then unplug the power cord.
Verify that the air filter is not clogged.
Clean or replace it as described on page 21.
Make sure the room temperature is not
above 104 °F (40 °C) and there is plenty of
space around and under the projector for
ventilation. Then plug the power cord back
in and press the
P Power button.
If the projector continues to overheat,
contact Epson for help.
When the P power light is red and the
temperature light is flashing red, there is a
problem with a fan or temperature sensor.
Turn off the projector, unplug the power
cord and contact Epson for help.
Light Description and solution
Green
Green
Orange
Red
Orange
Red
Red
Red
Red
When the P power light is green and the
lamp light is flashing orange, the lamp has
been used for at least 1900 hours. To
ensure continued operation, you should
replace it as soon as possible (see
page 21).
When the P power light is red and the
lamp light is flashing red, the lamp has
burned out. Replace it as described on
page 21.
If these lights come on after replacing the
lamp, make sure the lamp is fully inserted
and the lamp cover is attached.
If all three lights are red, the projector has
an internal problem. Turn off the projector,
unplug the power cord and contact Epson
for help.
Light Description and solution
Orange
Green
Red
Red
Red
Red
Red